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WO2016018190A1 - Module de traitement de l'eau, couvercle pour module de traitement de l'eau et procédés de traitement de l'eau - Google Patents

Module de traitement de l'eau, couvercle pour module de traitement de l'eau et procédés de traitement de l'eau Download PDF

Info

Publication number
WO2016018190A1
WO2016018190A1 PCT/SG2014/000367 SG2014000367W WO2016018190A1 WO 2016018190 A1 WO2016018190 A1 WO 2016018190A1 SG 2014000367 W SG2014000367 W SG 2014000367W WO 2016018190 A1 WO2016018190 A1 WO 2016018190A1
Authority
WO
WIPO (PCT)
Prior art keywords
cover
water treatment
treatment module
water
aperture
Prior art date
Application number
PCT/SG2014/000367
Other languages
English (en)
Inventor
Anders Larsson
Original Assignee
Blöndal Tech Pte Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Blöndal Tech Pte Ltd filed Critical Blöndal Tech Pte Ltd
Priority to CN201480081413.5A priority Critical patent/CN106794399B/zh
Priority to SG11201700662QA priority patent/SG11201700662QA/en
Priority to PCT/SG2014/000367 priority patent/WO2016018190A1/fr
Publication of WO2016018190A1 publication Critical patent/WO2016018190A1/fr

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
    • C02F1/004—Processes for the treatment of water whereby the filtration technique is of importance using large scale industrial sized filters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/62—Regenerating the filter material in the filter
    • B01D29/66—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps
    • B01D29/668—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps with valves, e.g. rotating valves for coaxially placed filtering elements
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2201/00—Apparatus for treatment of water, waste water or sewage
    • C02F2201/002—Construction details of the apparatus
    • C02F2201/007—Modular design
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00—Specific treatment goals
    • C02F2303/16—Regeneration of sorbents, filters

Definitions

  • the invention relates to a water treatment module.
  • the invention also relates to a cover for a water treatment module.
  • the invention also relates to a method of treating water.
  • the invention has particular, but not exclusive, application in water treatment systems (such as purification/filtration and desalination) for the treatment of the main incoming water to a building, such as a domestic residence.
  • water treatment systems such as purification/filtration and desalination
  • a type of filter in common usage is a glass-fibre reinforced vessel filled with sand for filtering the water.
  • the vessel is made with a relatively small opening in a top portion through which the filter may be filled with the filter media (e.g. sand).
  • the inlet and outlet are connected to and part mounted on the small opening in the top.
  • This part normally as well includes a backwashing mechanism. In order to extend the lifespan of the media it is backwashed with incoming water periodically. This is done by reversing the water flow direction through the inside the filter and letting the water flush out the collected dirt in the filter through an outlet.
  • the vessels can as well contain or be combined with other filtration media than sand.
  • Two common examples of filter media are activated carbon> for removing the chlorine and Ion Exchange resin for softening the water.
  • filters media are activated carbon> for removing the chlorine and Ion Exchange resin for softening the water.
  • the water inlet and outlet is commonly connected in the top of the vessel.
  • the tube often runs along near the ground level. This can be rather unsightly and, being relatively unprotected, is prone to damage.
  • Another common type is the usage of filters in a filter chamber and module where the filter can be replaced after a certain time of usage.
  • the filter chambers are typically made of moulded parts in plastic made through injection moulding.
  • the size of the chambers is predetermined by the size of plastic injection tools.
  • This filter chamber is the Pentair Big Blue ® series.
  • one disadvantage of the moulded filter chambers (vessels) is that a different length (size) of the chamber requires specific tooling.
  • the filter chamber normally has to be fabricated in a conical shape in order to pull out the core, which defines the inner cavity of the chamber.
  • configurations of one or more water treatment modules This may be done by - forming a protective cabinet around the one or more pressure vessels.
  • the modules may be produced in different versions and height with the same tooling setup.
  • the pressure vessel may comprise an extruded aluminum tube in which one end is provided with a sealing (bottom) cover containing a backwash mechanism and the other end provided with sealing (top) cover.
  • the pressure vessel may optionally be protected against corrosion, such as by through an anodizing process, or additional of a plastic sleeve or coating on the inside and/or outside.
  • the backwash mechanism e.g. movable piston
  • this provides an elegant solution, offering significant cost savings in manufacturing and an on-site commissioning.
  • servicing and installation of the water treatment media may be facilitated. Post-installation maintenance and/or upgrading is also facilitated.
  • Figure 1A is a perspective diagram illustrating a water treatment module
  • Figure IB is a cutaway perspective diagram illustrating an internal configuration for a cover for a water treatment module
  • Figure 1C is a perspective diagram illustrating components of a cover for a water treatment module
  • Figure 2 is a schematic diagram illustrating a piston and its shaft used in a backwash mechanism of a cover for a water treatment module
  • Figure 3A is a cross-sectional perspective view illustrating an internal configuration for a cover and a water treatment module when the backwash mechanism is in a first configuration
  • Figure 3B is a cross-sectional perspective view illustrating an internal configuration for a cover and a water treatment module when the backwash mechanism is in a second configuration
  • Figure 4 is a perspective view illustrating external connections for the cover
  • Figure 5A is a cross-sectional perspective view illustrating an internal configuration for a cover and a water treatment module when the backwash mechanism is in a first configuration, and the flow of water therethrough;
  • Figure 5B is an enhanced view of the arrangement of Figure IB illustrating flow of water therethrough in the first configuration
  • Figure 5C is an enhanced view of the arrangement of Figure 1C illustrating flow of water therethrough in the first configuration
  • Figure 6A is a cross-sectional perspective view illustrating an internal configuration for a cover and a water treatment module when the backwash mechanism is in a second configuration, and the flow of water therethrough;
  • Figure 6B is an enhanced view of the arrangement of Figure IB illustrating flow of water therethrough in the second configuration
  • Figure 6C is an enhanced view of the arrangement of Figure 1C illustrating flow of water therethrough in the second configuration
  • Figure 7A is an exploded perspective view of a series of the water treatment module of Figure 1;
  • Figure 7B is another exploded perspective view of a series of the water treatment module of Figure 1;
  • Figure 7C is a perspective view illustrating an integral assembly of a series of the water treatment module of Figure 1.
  • Water treatment module 100 comprises a housing 102 having a left housing cover 104 and a right housing cover 106.
  • the rear housing cover is obscured in Figure 1, and the front housing cover has been removed for the purpose of illustration of the pressurised container 108 which may be formed by, for example, an extruded pipe.
  • the pressurised container contains at least a water treatment medium such as a filter or desalination medium.
  • Water treatment module 100 further comprises a top cover 110 fixed to the housing 102 using screws 112.
  • Bottom cover 114 is fixed to the housing 102 using screws 116.
  • Cover 114 comprises a backwash mechanism (not illustrated in Figure 1A, but described in detail below).
  • the backwash mechanism is disposed internally to the cover 114.
  • the backwash mechanism may be operated/actuated by actuator 118 disposed on a side face of the cover 114, in this example, the left side cover.
  • actuator 118 comprises a foot pedal, for operation, preferably, by the foot of a user.
  • Actuator 118 is retained on the side face of the cover 114 with the actuator (foot pedal) holder 120. In one arrangement, this comprises a housing/framework fixed to the side face of the cover 114, with the actuator 118 being supported thereby.
  • Water to be treated enters the water treatment module 100 through an inlet aperture 122 not shown in Figure 1A as this is disposed on the rear face of the cover 114. Water is channelled to the inlet aperture by an inlet connector 124, also not shown in Figure 1A but described in greater detail below.
  • Cover 114 comprises a cover outlet/outlet aperture 126 disposed in the front side face of cover 114. Water may be channelled from the outlet aperture 126 using an outlet connection 128 (e.g. a piece of conduit for insertion into the aperture), omitted from Figure 1A for the sake of clarity.
  • Cover 114 further comprises a backwash outlet/aperture 130, obscured in Figure 1A, but water is channelled therefrom through backwash connection 132 visible in Figure 1A.
  • Figure 1A illustrates a water treatment module 100 comprising: a water treatment medium disposed within a pressurised container 108; and a cover 114 for the pressurised container 108, the cover 114 comprising a backwash mechanism for back washing of the water treatment medium.
  • the cover may be provided separately, in which case there is provided a cover 114 for a water treatment module 100, the water treatment module 100 comprising a water treatment medium disposed within a pressurised container 108, the cover comprising a backwash mechanism for back washing of the water treatment medium.
  • cover 114 is formed in an injection moulding process, where the internal channels are formed with cores in the tool of the injection mould.
  • plug 134 is provided to facilitate the injection moulding process.
  • the backwash mechanism is assembled separately and, for example, placed within the cover, or the cover is formed around it.
  • the backwash mechanism is disposed within the cover.
  • the module 100 is supported and fixed on a surface (not shown) by support feet 136 having holes through which fixing screws or bolts may be fastened.
  • the support feet may be fixed to any suitable point(s) on the module such as, for example, the housing or the pressurised container.
  • Figure IB is a cutaway perspective diagram illustrating an exemplary internal configuration for the cover 114 of Figure 1A. This diagram presents a cross-sectional view transverse the longitudinal axis of the water treatment module 100, and from an underside perspective (i.e. looking up from the underside of cover 114).
  • Inlet aperture 122 is visible in this view. This opens in a first side face 156 of cover 114.
  • Cover 114 further comprises second side face 158 which, in this example, is opposed first side face 156.
  • Cover outlet aperture 126 is disposed in second side face 158.
  • Cover 114 further comprises third side face 160 at right angles to, and between, edges of first and second side faces 156, 158.
  • Backwash aperture 130 is disposed in third side face 160.
  • the cover inlet, the cover outlet and the backwash outlet comprise respective apertures disposed in side faces of the cover.
  • Cover 114 further comprises fourth side face 162 opposed third side face 160.
  • the backwash mechanism actuator holder 120 is disposed on fourth side face 162.
  • cover 114 is a generally rectangular prism, also having a height defined by upper and lower surfaces. Together, the four side faces form the sides of the rectangle, when viewed from above or below cover 114.
  • a backwash mechanism 146 is disposed in piston channel 144.
  • One exemplary backwash mechanism is illustrated in, and described with reference to, Figure 2.
  • inlet channel 138 runs from the first side face 156 of cover 114 internally to the cover orthogonally to the side face.
  • the inlet channel 138 runs to its outlet where the inlet channel 138 merges into piston channel 140.
  • Piston channel 140 runs generally transverse inlet channel 138 in this example, and parallel or generally parallel to first side face 156.
  • piston channel 140 runs from third side face 160, internally towards, but not necessarily extending all the way to, fourth side face 162.
  • piston channel 140 In a first configuration (described in more detail below) piston channel 140 is in fluid communication with outlet channel 142 - that is, there is a flow path between them - with outlet channel 142 channelling through to outlet aperture 126.
  • the path from piston channel 140 to outlet channel 142 In the second configuration (also described in more detail below) the path from piston channel 140 to outlet channel 142 is closed off.
  • outlet conduit 142 runs parallel or generally parallel to and spaced from piston channel 140, disposed between piston channel 140 and second side face 158. The flow of the outlet conduit 142 changes so that it then runs transverse piston channel 140, as the outlet conduit 142 runs to outlet aperture 126.
  • Figure 1C is a perspective diagram illustrating components for the water treatment module of Figure lA and Figure IB. The view is from above, looking down on the cover 114 from the perspective of Figure 1A.
  • cover filter plug 148 sitting above piston channel 140, can be seen.
  • the function of cover filter plug 148 will be described in greater detail below, particularly with reference to Figure 3, but it is sufficient to note for now that this defines a generally cylindrical projection, projecting up away from piston channel 140, the plug having a central aperture 150 for receiving an outlet of a water treatment medium.
  • Cover filter plug 148 may comprise an integral part of the cover, or it may be formed separately and attached, affixed or otherwise assembled thereto.
  • Plug 148 comprises support ribs 149 for mechanical strength.
  • a first treatment medium aperture 152 through which water can flow, as described in greater detail with reference to Figures 5 and 6.
  • Central aperture 150 of cover filter plug 148 runs from a second treatment medium aperture 154 (shown in, for example, Figure 3A), which is another aperture in cover 114 through which water can flow, also described in greater detail with reference to Figures 5 and 6.
  • An annular wall 155 disposed concentrically around the cover filter plug 148, rises from an upper surface 157 of the cover.
  • Annular wall 155 may comprise an integral part of the cover, or it may be formed separately and attached, affixed or otherwise assembled thereto.
  • the cover filter plug 148 and the annular wall both rise to approximately the same height above the upper surface 157 of the cover, best seen in Figure 3.
  • Figure 2 is a cross-sectional elevational view of an exemplary backwash mechanism 146 for the water treatment module 100.
  • the exemplary backwash mechanism 146 for the water treatment module 100.
  • components comprise of a piston mechanism, and are not drawn to scale. All of the components illustrated are of generally cylindrical shape, although other arrangements are contemplated. The diametrical dimensions of the individual parts of the backwash mechanism vary, as will now be described.
  • backwash mechanism 146 comprises a reduced-diameter shaft 200 (reduced with respect to piston channel 140, as will become apparent from the description below).
  • the shaft 200 makes up at least part of a first reduced-diameter portion of the backwash mechanism.
  • Shaft 200 has a first end 202 having a hole 203 formed therethrough for connection (e.g. through a mechanical linkage) to actuator 118, described with reference to Figure 3.
  • Shaft 200 further comprises a second end 204, distal the first end 202.
  • Second end 204 is provided with an external (male) threaded portion.
  • a flow controller 206 having a first proximal end 208 (proximal shaft 200 when assembled therewith) and a second distal end 210 (distal shaft 200 when assembled therewith).
  • First end portion 208 comprises a recess 212 having an internal (female) threaded portion for receiving the male threaded portion of second end 204 of shaft 200, for the shaft 200 and the flow controller 206 to be assembled together through a screwing action, but other assembly arrangements are of course possible.
  • flow controller 206 (which can be used to control the flow "direction" of water through the module) comprises a first barrier portion 214, positioned adjacent to, and right of, first end 208.
  • First barrier portion 214 has a diameter which is greater than the diameter of shaft 200.
  • flow controller 206 comprises a portion 216 of reduced diameter, the diameter of portion 216 being less than the diameter of first barrier portion 214.
  • Portion 216 comprises at least part of a second reduced-diameter portion of the backwash mechanism.
  • flow controller 216 Farther along the length of flow controller 216, moving from the first end 208 to the second end 210, flow controller 216 has a second barrier portion 218 having a diameter greater than the diameter of portion 216.
  • the diameters of first and second barrier portions are generally the same or at least similar given the geometry of the piston channel 140, but other arrangements for the dimensions of the barrier portions are contemplated, and this may depend on the geometry of the piston channel.
  • an (optional) third reduced-diameter portion 220 is an (optional) third reduced-diameter portion 220.
  • Flow controller 206 further comprises recesses 222 disposed around the surface of flow controller for receiving O-rings seals, not shown in Figure 2.
  • water treatment module 100 comprises water treatment medium 300, such as a filtration or desalination medium as described above, or other purification, separation, decontamination or similar medium such as an ion exchange treatment medium.
  • the water treatment module 300 in this example is generally cylindrical in shape, having an outer surface 302.
  • the pressurised container 108 is cylindrical having an internal wall or protection film 304.
  • the pressurised container is concentric with the cylindrical water treatment module 300, but having a gap 306 between the outer surface 302 of the water treatment module 300 and the inner surface of 304 of pressurised container 108.
  • the water treatment medium surrounds and opens into an open central core for flow of water therethrough as will be described below. Additionally or alternatively, the water enters the top of the filter and flows down to the bottom of the filter, along the length thereof.
  • the water treatment medium has an output 310 comprising a projection extending from a lower portion of the water treatment module, with the projection also having an open aperture, again for flow of water therethrough.
  • the projection of the water treatment module outlet 310 is arranged for insertion into the inlet 150 of the cover filter plug 148, illustrated in Figure 1C such that the open central core 308 of the water treatment module 300, the water treatment outlet 310 and the second water treatment medium aperture 154 are in fluid communication with one another.
  • cover filter plug 148 projects upwards away from an upper surface of the cover, and that the water treatment medium outlet 310 projects downwards from the underside thereof, plugging in to the cover filter plug 148, there is a void 312 comprising an empty volume surrounding the cover filter plug 148, enclosed by the annular wall 155 disposed concentrically around the cover filter plug 148, and as described above with reference to Figure 1C.
  • piston channel 140 this comprises a generally cylindrical conduit within which the piston mechanism of the shaft 200 and the flow controller 206 are disposed.
  • Piston channel 140 may be of a uniform or generally uniform diameter across its length, but in this example, the channel has some variations in diameter across sections of its length, and such arrangements may assist in helping control movement of the backwash mechanism 146 during a transition between the normal and backwash operational states of water treatment module 100 described below.
  • the shaft and the flow controller have limited translational movement along and within the piston channel 140.
  • the channel insert 314 is provided in order to distance the sliding seals of the piston to the holes in the channel. Direct contact of the piston seals to the hole edges in the channel would harm the seals when moving the piston between the first and second configurations described below. .
  • Seal holder 316 is provided to hold the seals (o-rings) for the sliding shaft 200
  • Seals 318 are disposed in the annular recesses 222 around the outer cylindrical surfaces of the flow controller 206 to prevent water leakage around the first and second barrier portions 214, 218.
  • the barrier portions are arranged to abut the internal surface of the piston channel to form flow barriers, preferably assisted by the O-ring seals.
  • the piston mechanism comprising the rod 200 and flow controller 206 have limited translational movement within piston channel 140 where the limits to the translational movement may be defined by the geometry of sections of the piston channel. For example, if the piston is positioned within a first section of piston channel 140 and moves towards a second section of lesser diameter, this may restrict or limit the movement of the piston beyond the first section.
  • Foot pedal 118 is mechanically linked to the shaft 200 through a mechanical linkage comprising a joint mechanism 320 pivotally fixed to the first end 202 of the shaft 200 with a pin, stud, bolt or other fixing through the hole 203 bored in the shaft.
  • a lower end of the foot pedal pivots about the pedal pivot point 322.
  • Seals 324 are provided to form a seal between the pressure vessel and the cover.
  • rod 200 and and/or the first end 208 of the flow controller comprise a first reduced-diameter portion of the backwash mechanism/piston.
  • this portion is of a diameter which is smaller than the inner bore diameter of the piston channel 140.
  • a volume 326 of the piston channel 140 surrounding the first reduced diameter portion is, therefore, not completely filled with solid matter.
  • portion 216 of flow controller 206 is also of a reduced diameter.
  • This portion comprises a second reduced-diameter portion of the backwash mechanism/piston. Further, this portion 216 is also of a diameter which is smaller than the inner bore diameter of the piston channel 140.
  • the volume 328 of the piston channel 140 surrounding the second reduced-diameter portion 216 is, therefore, not completely filled with solid matter.
  • volume 326 surrounding the first reduced-diameter portion 200 opens out into the second water treatment medium aperture 154.
  • volume 326 is in fluid communication with the inlet of the cover filter plug 150, the outlet 310 of the water treatment module 300 and the central core 308, through second water treatment medium aperture 154.
  • the volume 328 surrounding the second reduced-diameter portion 216 opens out into the first water treatment medium aperture 152.
  • volume 328 is in fluid communication with the void 312 through first water treatment medium aperture 152.
  • the foot pedal is illustrated in a stowed position, corresponding to a first position of the piston mechanism within the piston channel.
  • the first position of the piston mechanism corresponds with a first mode of operation of the water treatment module 100.
  • the first mode of operation is a "normal" water treatment mode, as will be described in further detail below with reference to Figure 5.
  • Figure 3B illustrates a second position of the piston mechanism within the piston channel 140 after the foot pedal 118 has been moved to a deployed position.
  • the water treatment module 100 is in a second mode of operation, a "backwash" mode.
  • the downward pressure effected by a user placing his or her foot on the upper knurled portion of foot pedal 118 causes the upper portion of the foot pedal to pivot away from the pressurised container 108 about the pivot point 322, thus effecting a pulling force on the shaft 200 through the mechanical linkage (joint mechanism 320) thereby effecting the translational movement of the piston mechanism within the piston channel 140.
  • the translational movement is, in the perspective of Figure 3B, from right to left, towards the foot pedal 118.
  • volume 328 surrounding the second reduced-diameter portion 216 opens out into the second water treatment medium aperture 154.
  • volume 328 is in fluid communication with the inlet of the cover filter plug 150, the outlet 310 of the water treatment module 300 and the central core 308, through second water treatment medium aperture 154.
  • the volume 326 surrounding the first reduced-diameter portion 200 is now no longer in communication with the second water treatment medium aperture 154, the flow path therebetween now being blocked by the first barrier portion 214 of the flow controller 206 and the O-ring positioned in the recess 222. Instead, volume 326 is isolated from this flow path.
  • volume 328 surrounding the second reduced-diameter portion 216 now opens into the second water treatment medium aperture 154.
  • volume 328 is in fluid communication with the inlet of the cover filter plug 150, the outlet 310 of the water treatment module 300 and central core 308, through second water treatment medium aperture 154.
  • Water is supplied at pressure to the cover inlet aperture 122. From the cover inlet aperture 122, there is an incoming flow path denoted As/through the inlet channel 138 best viewed in Figure 5B. As mentioned above, the inlet channel 122 has an outlet where it merges into the piston channel 140 in which the piston/backwash mechanism 146 is disposed, into the volume 328 surrounding the second reduced- diameter portion 216 of the flow controller 208. From the piston channel 140, water flows into the first treatment medium aperture 152, best viewed in Figure 5A. As noted above, first treatment medium aperture 152 opens into the void 312 surrounding the plug 148 into which the filter outlet 310 is inserted. As also noted above, second treatment medium 154 provides a flow path between the filter outlet 310 and the piston channel 140, into the volume 326 surrounding the rod 200, the first reduced-diameter portion of the piston mechanism.
  • the piston mechanism has at least a first portion 200 of reduced diameter so that it does not fill the piston channel 140 fully, and a first piston barrier portion 214 of a larger diameter to form a barrier in the piston channel.
  • the second reduced-diameter portion 216 is positioned such that the outlet of the inlet channel 138 - where the inlet channel 138 merges into the piston channel 140 - opens into the volume 328.
  • the second reduced-diameter portion 216 is positioned such that the volume 328 opens onto the first water treatment medium aperture 152.
  • the reduced diameter of the reduced-diameter portion 216 there is a flow path from the outlet of the inlet channel 138, through the piston channel 140 - specifically through the volume 328 thereof - around the second reduced-diameter portion 216 to the first water treatment medium aperture 152 and to the void 312 surrounding the cover filter plug 148.
  • the first barrier portion 214 of the flow controller is disposed between the first treatment medium aperture 152 and the second treatment medium aperture 154 thereby blocking any flow path which might otherwise occur between these apertures along the piston channel 140.
  • the second treatment medium aperture 154 is unblocked, so that there is a flow path from the outlet 310 of the water treatment medium 300 into the piston channel 140 - specifically through the volume 326 thereof surrounding the shaft 200, the first reduced- diameter portion. There is also then a flow path from the volume 326 of the piston channel 140 in which the shaft 200 is disposed, through the outlet channel 142 to the outlet aperture 126, as best viewed in Figure 5B.
  • FIG. 5C provides an enhanced perspective view corresponding with Figure 1C, illustrating the incoming flow path As, and the outgoing flow path Bs with respect to the cover 114.
  • Figure 6 provides a series of views illustrating the water flow path in the second, "backwash" mode of operation. As described above with reference to Figure 3, the piston mechanism is moved to the second position upon activation of the actuator/foot pedal 118 for the backwash operation. Water flow within the water treatment module 100 is diverted, as will now be described.
  • the piston could simply terminate at the end of the second barrier portion 218.
  • the second barrier portion 218 is moved beyond the first treatment medium aperture 152 in the direction towards the actuator 118 so that the second treatment medium aperture 154 opens out into the piston channel 140 and then onto the backwash channel 144 and the backwash outlet 130.
  • water is supplied at pressure into the water treatment module through the cover inlet aperture 122, flowing through the inlet channel 138 to the piston channel 140, best shown in Figure 6B.
  • the water then flows into the volume 328 of the piston channel 140 around the second reduced-diameter portion 216 of the piston, and out of the piston channel 140 through the second treatment medium aperture 154 and into the filter outlet 310 (being an inlet to the filter in the backwash operation).
  • the water rises through the filter outlet into the filter core 308, and then passes through the filter medium in the reverse direction 502 (reversed when compared to the direction 500 of water flow in the normal operation).
  • the outgoing water flow flows into the gap 306 between the outer surface of the filter medium 300 and the inner surface of the pressurised container 308.
  • the water flows into the void 312 surrounding the filter plug 148, through the first treatment medium aperture 152 and back into the piston channel 140. From there, the water flows along the piston channel to the backwash channel 144 and into the backwash outlet.
  • the cover 114 comprises a first treatment medium aperture 152 and a second treatment medium aperture 154; and wherein the backwash mechanism 146 comprises a piston disposed within a piston channel 140, the piston comprising a first reduced-diameter portion 200 and a second reduced-diameter portion 216, the first reduced-diameter portion 200 and the second reduced-diameter portion 216 each having an external diameter which is less than an internal diameter of the piston channel 140; and wherein the piston is configured to be disposed in a first position in which a volume 328 of the piston channel surrounding the second reduced-diameter portion 216 is in fluid communication with the cover inlet aperture 122 and in fluid communication with the first treatment medium aperture 152, and a volume 326 of the piston channel surrounding the first reduced-diameter portion 200 is in fluid communication with the second treatment medium aperture 154 and the cover outlet aperture 126.
  • the piston is configured to be disposed in a second position in which the volume 328 of the piston channel surrounding the second reduced-diameter portion 216 is in fluid communication with the cover inlet aperture 122 and in fluid communication with the second treatment medium aperture 154 and the first treatment medium aperture 152 is in fluid communication with the backwash outlet 130.
  • Figure 6C illustrates the water flow into and out of the cover through the filter outlet aperture 150 and the first water treatment medium aperture 152.
  • any accumulated debris in the filter medium may be flushed out, and the way through the backwash outlet 130.
  • Providing a pressurised cover for the water treatment module comprising the backwash mechanism provides a particularly elegant solution.
  • a water treatment module 100 which is configured for the backwash mechanism 146 to be switched between a treatment operational state and a backwash operational state, wherein: in the treatment operational state, there is a first flow path for flow of water from a cover inlet 122 through the water treatment medium 300 in a first direction 500 to a cover outlet 126;
  • Figure 4 provides a detailed perspective view of how the inlet connection 124 and the outlet connection 128 may be fixed, respectively, to the inlet aperture 122 and the outlet aperture 126.
  • Figure 7A provides an exploded perspective view of three water treatment modules 100, 100a, 100b with the left and right housing covers 104, 106 removed.
  • the housing covers can be, for example, fitted together in a "snap fit" action with the clips 700.
  • An external top cover 702 is also provided to prevent any debris falling into the top cover 110.
  • Figure 7B provides an alternative view, detailing the manner in which the inlet connection 124 and outlet connection 128 may be connected between modules.
  • An integrated water treatment system having three individual treatment modules 100, 100a, 100b is shown in Figure 7.
  • the cover inlet aperture 122 is disposed in a first side face 156 of the cover 114
  • the cover outlet aperture 126 is disposed in a second side face 158 of the cover 114, the first side face 156 being opposite the second side face 158
  • the cover outlet aperture 126 is disposed in the second side face 158 in a position for registration with a second cover inlet aperture of a second water treatment module 100a.
  • multiple modules may be provided to enhance the water treatment operation.
  • multiple water treatment modules can be connected in series - as in this example - with each of the modules performing either the same or a different function.
  • a water treatment medium in one or all of them may comprise of a sand filter.
  • the water treatment medium may be an activated carbon filter.
  • the water treatment medium in the other of the water treatment modules may be, for example, another type of filtration medium, desalination medium, ion exchange medium or similar.
  • the backwash mechanism is provided in the bottom cover, but additionally or alternatively, the or another backwash mechanism may be provided in the top cover too.
  • situating the backwash mechanism in the bottom cover is a preferred configuration to minimise the amount of external piping necessary to convey water from water piping (typically installed at or below ground level) to the top cover. And, additionally, this facilitates easier replacement of treatment media or filters from above.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Water Treatment By Sorption (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

Module de traitement de l'eau (100) comprenant un milieu de traitement de l'eau (300) disposé dans un récipient sous pression (108). Un couvercle (114) pour le récipient sous pression comprend un mécanisme de lavage à contre-courant (130) pour le lavage à contre-courant du milieu de traitement de l'eau. L'invention concerne également un couvercle pour un module de traitement de l'eau et des procédés de traitement de l'eau.
PCT/SG2014/000367 2014-07-31 2014-07-31 Module de traitement de l'eau, couvercle pour module de traitement de l'eau et procédés de traitement de l'eau WO2016018190A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN201480081413.5A CN106794399B (zh) 2014-07-31 2014-07-31 水处理模块，用于水处理模块的罩部和处理水的方法
SG11201700662QA SG11201700662QA (en) 2014-07-31 2014-07-31 Water treatment module, cover for a water treatment module, and methods of treating water
PCT/SG2014/000367 WO2016018190A1 (fr) 2014-07-31 2014-07-31 Module de traitement de l'eau, couvercle pour module de traitement de l'eau et procédés de traitement de l'eau

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/SG2014/000367 WO2016018190A1 (fr) 2014-07-31 2014-07-31 Module de traitement de l'eau, couvercle pour module de traitement de l'eau et procédés de traitement de l'eau

Publications (1)

Publication Number Publication Date
WO2016018190A1 true WO2016018190A1 (fr) 2016-02-04

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PCT/SG2014/000367 WO2016018190A1 (fr) 2014-07-31 2014-07-31 Module de traitement de l'eau, couvercle pour module de traitement de l'eau et procédés de traitement de l'eau

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Country Link
CN (1) CN106794399B (fr)
SG (1) SG11201700662QA (fr)
WO (1) WO2016018190A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114534370A (zh) * 2022-03-29 2022-05-27 无锡亚舟精机有限公司 一种洗车污水处理系统及其前置清洗机

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Publication number Priority date Publication date Assignee Title
US5855799A (en) * 1994-09-01 1999-01-05 Pyrox, Inc. Rotary disk filter with backwash
US6206042B1 (en) * 1998-03-06 2001-03-27 Chemical Engineering Corporation Modular control apparatus for water treatment system
WO2013054964A1 (fr) * 2011-10-13 2013-04-18 주식회사 파나시아 Dispositif de type bougie d'efficacité élevée destiné à filtrer l'eau de ballastage, ayant une structure de filtre haute densité

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US6797156B2 (en) * 2001-12-21 2004-09-28 Yiu Chau Chau Faucet water treatment
CN101785939B (zh) * 2009-09-08 2011-08-10 四川神坤装备股份有限公司 一种压差可调式自动反冲洗过滤器
CN103657206A (zh) * 2012-08-31 2014-03-26 广东振华电器有限公司 可通过水路变换实现反冲自动清洁的新型过滤器

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Publication number Priority date Publication date Assignee Title
US5855799A (en) * 1994-09-01 1999-01-05 Pyrox, Inc. Rotary disk filter with backwash
US6206042B1 (en) * 1998-03-06 2001-03-27 Chemical Engineering Corporation Modular control apparatus for water treatment system
WO2013054964A1 (fr) * 2011-10-13 2013-04-18 주식회사 파나시아 Dispositif de type bougie d'efficacité élevée destiné à filtrer l'eau de ballastage, ayant une structure de filtre haute densité

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114534370A (zh) * 2022-03-29 2022-05-27 无锡亚舟精机有限公司 一种洗车污水处理系统及其前置清洗机
CN114534370B (zh) * 2022-03-29 2023-04-11 无锡亚舟精机有限公司 一种洗车污水处理系统及其前置清洗机

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CN106794399A (zh) 2017-05-31
CN106794399B (zh) 2020-04-24

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