CN107140784A - A kind of medical sewage multisection type water treatment system and processing method - Google Patents

Abstract

The invention discloses a kind of medical sewage multisection type processing system and processing method of water-treatment technology field, including pretreatment unit, water adjusting means, contact-oxidation pool, sedimentation basin, sterilizing pond and dechlorination apparatus, wastewater inlet is connected with the left of the pretreatment unit, the top left and right sides of the pretreatment unit housing is provided with draws mouth clearly, this kind of medical sewage multisection type water treatment system and processing method, it is reasonable in design, handled by multisection type, treatment effeciency is high, using pretreatment unit, solid waste in sewage can be decomposed, reduce sewage volume, using water adjusting means, can be degraded heavy metal level in medical sewage, and sewage PH value is adjusted to neutrality, using contact-oxidation pool, organic pollution in sewage can be decomposed and absorbed, using sterilizing pond, can be by the virus in sewage, bacterium kills, ensure the health of water quality.

Description

A multi-stage water treatment system and treatment method for medical sewage

technical field

The invention relates to the technical field of sewage treatment, in particular to a multi-stage water treatment system and treatment method for medical sewage.

Background technique

Medical sewage comes from hospitals, containing a large number of pathogenic bacteria, viruses and chemical agents, which require special process treatment. Medical water involves many departments, including hemodialysis water, laboratory water, biochemical test water, pathology water, central supply room water, and surgical water. Compared with industrial sewage, medical sewage has a greater impact on the environment and is more harmful than industrial sewage. During the operation of the hospital, it is inevitable to produce direct or indirect infectious, toxic and other harmful sewage. The source of these sewage determines the complexity of its composition, involving a variety of biological and chemical properties. Contains a large number of pathogens such as bacteria, viruses, and insect eggs. However, at present, major hospitals have not properly disposed of seriously harmful medical sewage, ignoring the vicious incidents of water pollution that may be caused by virus infection in sewage. How to invent a A medical sewage multi-stage water treatment system and treatment method capable of rationally disposing of medical sewage is an urgent problem to be solved by those skilled in the art.

Contents of the invention

The purpose of the present invention is to provide a multi-stage water treatment system and treatment method for medical sewage, so as to solve the problem that the current major hospitals do not properly dispose of seriously harmful medical sewage and ignore the viruses in sewage. The problem of water pollution vicious incidents that may be caused by infection.

In order to achieve the above object, the present invention provides the following technical solutions: a multi-stage treatment system for medical sewage, including a pretreatment device, a water conditioning device, a contact oxidation tank, a sedimentation tank, a sterilization and disinfection tank and a dechlorination device, the pretreatment device There is a sewage inlet connected to the left side of the pretreatment device housing, and there are cleaning openings on the left and right sides of the top of the pretreatment device housing, and pre-filtering mechanisms are installed vertically on the left and right sides of the inner cavity of the pretreatment device. The right end of the pretreatment device is connected with a suction pump through a water pipeline, and the right end of the suction pump is connected with a water regulating device through a water pipeline, and a pH value indicator is plugged into the inner cavity of the water regulating device. There is a feeding port on the right side of the top of the water regulating device. A stirring motor is fixedly installed on the top of the water regulating device. The outer wall of the rotating shaft is sleeved with stirring blades, the right side wall of the water regulating device is connected with an oxygen delivery pipeline, and the right side wall of the water regulating device is connected with a contact oxidation tank through a water delivery pipeline, and the contact oxidation tank is The right end is connected to a sedimentation tank through a water pipeline, the top of the sedimentation tank is movably connected with a cover plate, and the left and right sides of the bottom of the sedimentation tank are fixedly connected with hydraulic telescopic rods, and the tops of the two sets of hydraulic telescopic rods are fixed A sedimentation filter plate is connected, and the right end of the sedimentation tank is connected with a sterilizing tank through a water pipeline, and the right end of the sedimentation tank is fixedly connected with a return sludge pipeline, and the left end of the return sludge pipeline is connected to the shell of the treatment device The left end of the bottom is fixedly connected, the top of the sterilizing pool has a disinfectant inlet, the right wall of the inner cavity of the sterilizing pool is uniformly connected with an ultraviolet germicidal lamp, and the inner cavity of the sterilizing pool is fixed and installed horizontally. Set the filter plate.

Preferably, the pre-filter mechanism includes two sets of brackets, the left ends of the two sets of brackets are fixedly connected with stainless steel metal mesh plates by bolts, and the left side walls of the stainless steel metal mesh plates are evenly opened with through holes.

Preferably, the sedimentation filter plate includes two sets of grid plates, and a metal filter screen is fixedly connected between the two sets of grid plates, and the left and right ends of the grid plate and the metal filter screen are fixedly connected to facilitate sliding. Piece.

Preferably, the post filter plate includes a nonwoven ultrafiltration membrane layer, the bottom of the nonwoven ultrafiltration membrane layer is fixedly connected with an activated carbon adsorption layer, and the bottom of the activated carbon adsorption layer is fixedly connected with a metal mesh layer.

A multi-stage water treatment method for medical sewage, comprising the following steps: pretreatment, water quality adjustment, decomposition of organic pollutants, sedimentation filtration, and sterilization and disinfection. The specific steps of the multi-stage water treatment method for medical treatment are as follows:

S1: Pretreatment: Enter the pretreatment device through the pipeline, filter and remove the suspended solids through the pre-filter mechanism, make the medical sewage and the activated sludge returned from the sedimentation tank through the return sludge pipeline fully mix for anaerobic digestion and decomposition, so that The organic polymer pollutants in the sewage are initially decomposed into small molecular compounds to facilitate the subsequent treatment process to play a role, and the sewage is input into the water conditioning device;

S2: Water quality adjustment: the PH value adjuster and ion redox agent are introduced into the water adjustment device, and oxygen is introduced into the water adjustment device through the oxygen delivery pipeline, and the stirring motor is started to drive the rotating shaft to rotate, and the rotating shaft drives the stirring blade to rotate, so that Various ions in the sewage fully react with the pH regulator and ion redox agent to adjust the pH value in the sewage to be neutral, increase the oxygen content of the sewage, degrade the level of heavy metals in the medical sewage, and then pass the sewage into the contact oxidation pool;

S3: Decomposition of organic pollutants: the filler with biofilm in the contact oxidation tank is fully contacted and mixed with the oxygenated sewage, and oxygen is continuously input into the contact oxidation tank, so that microorganisms can degrade organic pollutants through metabolism under aerobic conditions. The final sewage is input into the sedimentation tank;

S4: Sedimentation filtration: The degraded sewage is input into the sedimentation tank, and the sedimentation filter plate filters the small particle sludge in the sewage and then is input into the sterilization and disinfection tank. Raise, open the cover, and discharge the small particle sludge on the sedimentation filter plate;

S5: Sterilization and disinfection: Afterwards, it is filtered by the rear filter plate, and the sterilizing disinfectant is input into the sterilizing and disinfecting pool through the disinfectant inlet.

Preferably, in the step S1, the sewage enters the housing of the pretreatment device through the sewage inlet, and the sewage is passed into the water conditioning device through the suction pump.

Preferably, in the step S2, the acidity and alkalinity of the sewage is displayed by a pH value indicator, and the sewage is adjusted to be neutral by a water regulating device.

Compared with the prior art, the beneficial effects of the present invention are: the medical sewage multi-stage water treatment system and treatment method are reasonably designed, the multi-stage treatment has high treatment efficiency, and the pretreatment device can remove the solids in the sewage The waste is decomposed to reduce the volume of the sewage. The water conditioning device can degrade the heavy metal level in the medical sewage and adjust the pH value of the sewage to neutral. The contact oxidation tank can decompose and absorb the organic pollutants in the sewage. The disinfection pool can kill the viruses and bacteria in the sewage to ensure the health of the water quality.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is a structural schematic diagram of the pre-filter mechanism of the present invention;

Fig. 3 is the structure schematic diagram of precipitation filter plate of the present invention;

Fig. 4 is a top view of the stirring blade of the present invention;

Fig. 5 is a schematic diagram of the structure of the rear filter plate of the present invention.

In the figure: 1 pretreatment device, 2 sewage inlet, 3 cleaning mouth, 4 pre-filter mechanism, 41 bracket, 42 stainless steel metal mesh plate, 43 through hole, 5 suction pump, 6 water adjustment device, 7PH value display instrument , 8 feed inlet, 9 stirring motor, 10 rotating shaft, 11 stirring blade, 12 oxygen delivery pipe, 13 contact oxidation tank, 14 sedimentation tank, 15 cover plate, 16 hydraulic telescopic rod, 17 sedimentation filter plate, 171 grid plate, 172 Metal filter, 173 Slider, 18 Sterilization tank, 19 Disinfectant import, 20 Ultraviolet germicidal lamp, 21 Rear filter plate, 211 Non-woven ultrafiltration membrane layer, 212 Activated carbon adsorption layer, 213 Metal mesh layer, 22 return sludge pipeline.

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Please refer to Figures 1-5, the present invention provides a technical solution: a multi-stage treatment system for medical sewage, including a pretreatment device 1, a water conditioning device 6, a contact oxidation tank 13, a sedimentation tank 14, a sterilization tank 18 and a decontamination tank Chlorine device 23, the left side of the pretreatment device 1 is connected with a sewage inlet 2, the top left and right sides of the top of the pretreatment device housing 1 are provided with cleaning openings 3, the inner cavity of the pretreatment device 1 is left and right Both sides are vertically installed with a pre-filter mechanism 4, the right end of the pretreatment device 1 is connected to a suction pump 5 through a water pipeline, and the right end of the suction pump 5 is connected to a water regulating device 6 through a water pipeline , the inner cavity of the water regulating device 6 is plugged with a pH value indicator 7, the top right side of the water regulating device 6 has a feed port 8, and the top of the water regulating device 6 is fixedly equipped with a stirring motor 9 , the output end of the stirring motor 9 is connected with a rotating shaft 10, the rotating shaft 10 runs through the inner cavity of the water regulating device 6, the outer wall of the rotating shaft 6 is sleeved with a stirring blade 11, the right side of the water regulating device 6 The wall is connected with an oxygen delivery pipeline 12, and the right side wall of the water regulating device 6 is connected with a contact oxidation tank 13 through a water delivery pipeline, and the right end of the contact oxidation tank 13 is connected with a sedimentation tank 14 through a water delivery pipeline, and the sedimentation The top of the pool 14 is movably connected with a cover plate 15, the left and right sides of the bottom of the sedimentation tank 14 are fixedly connected with hydraulic telescopic rods 16, and the tops of the two groups of hydraulic telescopic rods 16 are fixedly connected with sedimentation filter plates 17, so The right end of the settling tank 14 is connected with a sterilizing tank 18 through a water pipeline, and the right end of the settling tank 14 is fixedly connected with a return sludge pipeline 22, and the left end of the return sludge pipeline 22 is connected to the bottom of the treatment device housing 1 The left end is fixedly connected, and the top of the sterilizing pool 18 has a disinfectant inlet 19, and the inner cavity right side wall of the sterilizing pool 18 is evenly fixedly connected with an ultraviolet germicidal lamp 20, and the inner cavity of the sterilizing pool 18 is horizontally A rear filter plate 21 is fixedly installed.

Wherein, the pre-filter mechanism 4 includes two groups of brackets 41, the left ends of the two groups of brackets 41 are fixedly connected with stainless steel metal mesh plates 42 by bolts, and the stainless steel metal mesh plates 42 filter out the sludge in the treated sewage , the left side wall of the stainless steel metal mesh plate 42 is evenly opened with through holes 43, the sedimentation filter plate 17 includes two groups of grid plates 171, and a metal filter screen 172 is fixedly connected between the two groups of grid plates 171, The grid plate 171 and the metal filter screen 172 cooperate to filter out the sludge or residue in the sedimentation tank 14. The left and right ends of the grid plate 171 and the metal filter screen 172 are fixedly connected to help the slide block 173, and the slide block 173 Facilitate the relative sliding of the sedimentation filter plate 17 and the left and right inner walls of the sedimentation tank 14, the rear filter plate 21 includes a non-woven ultrafiltration membrane layer 211, and the non-woven ultrafiltration membrane layer 211 filters out bacteria and viruses killed in the sewage and flocs, and filter microparticles, the bottom of the non-woven fabric ultrafiltration membrane layer 211 is fixedly connected with an activated carbon adsorption layer 212, and the activated carbon adsorption layer 212 absorbs the peculiar smell in the water and adjusts the water quality purity. The activated carbon adsorption layer 212 A metal mesh layer 213 is fixedly connected to the bottom.

The present invention also provides a multi-stage water treatment method for medical sewage, including the following steps: pretreatment, water quality adjustment, decomposition of organic pollutants, sedimentation filtration, and sterilization and disinfection. The specific steps of the multi-stage water treatment method for medical treatment are as follows:

S1: Pretreatment: input into the pretreatment device 1 through the pipeline, and remove the suspended solids after filtration by the pre-filter mechanism 4, fully mix the medical sewage and the activated sludge returned by the sedimentation tank 14 through the return sludge pipeline 22 for anaerobic digestion and decomposition, so that the organic polymer pollutants in the sewage are initially decomposed into small molecular compounds to facilitate the subsequent treatment process to play a role, and the sewage is input into the water conditioning device 6, and the sewage enters the shell of the pretreatment device through the sewage inlet, and Pass the sewage into the water conditioning device through the suction pump;

S2: Water quality regulation: pass into the water regulating device 6 the PH value regulator and ion redox agent, and pass oxygen into the water regulating device 6 through the oxygen delivery pipeline 12, start the stirring motor 9 to drive the rotating shaft 10 to rotate, the rotating shaft 10 Drive the stirring blade 11 to rotate, so that various ions in the sewage can fully react with the pH regulator and ion redox agent, so as to adjust the pH value in the sewage to be neutral, increase the oxygen content of the sewage, and degrade the level of heavy metals in the medical sewage. The sewage is passed into the contact oxidation tank 13, the acidity and alkalinity of the sewage is displayed by the pH value indicator, and the sewage is adjusted to be neutral by the water regulating device;

S3: Decomposition of organic pollutants: The contact oxidation tank 13 is filled with fillers with biofilms and is fully contacted and mixed with oxygenated sewage, and oxygen is continuously input into the contact oxidation tank 13, so that microorganisms can degrade organic pollutants through metabolism under aerobic conditions. Pollutants, after degradation, the sewage is input into the sedimentation tank 14;

S4: Sedimentation Filtration: The degraded sewage is input into the sedimentation tank 14, and the sedimentation filter plate 17 filters the small particle sludge in the sewage and then is input into the sterilization and disinfection tank 18. The telescopic end of the hydraulic telescopic rod 16 in the sedimentation tank 14 is regularly The rise of the precipitation filter plate 17 is raised, the cover plate 15 is opened, and the small particle sludge on the precipitation filter plate 17 is discharged;

S5: Sterilization and disinfection: After filtering through the rear filter plate 21, and input the sterilizing disinfectant to the sterilizing and disinfecting pool 18 through the disinfectant inlet 19, the sterilizing and disinfecting agent cooperates with the ultraviolet germicidal lamp 20 to sterilize and disinfect the sewage input into the sterilizing and disinfecting pool 18 .

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications and substitutions can be made to these embodiments without departing from the principle and spirit of the present invention. and modifications, the scope of the invention is defined by the appended claims and their equivalents.

Claims (7)

1. A multi-stage treatment system for medical sewage, comprising a pretreatment device (1), a water conditioning device (6), a contact oxidation tank (13), a sedimentation tank (14), a sterilization tank (18) and a dechlorination device ( 23), characterized in that: the left side of the pretreatment device (1) is connected with a sewage inlet (2), and the left and right sides of the top of the pretreatment device housing (1) are provided with cleaning openings (3) , the left and right sides of the inner cavity of the pretreatment device (1) are vertically equipped with a pre-filter mechanism (4), and the right end of the pretreatment device (1) is connected with a suction pump (5) through a water delivery pipeline , the right end of the suction pump (5) is connected with a water regulating device (6) through a water pipeline, and the inner cavity of the water regulating device (6) is plugged with a pH value indicator (7). The top right side of the device (6) has a feed inlet (8), the top of the water regulating device (6) is fixedly equipped with a stirring motor (9), and the output end of the stirring motor (9) is connected with a rotating shaft ( 10), the rotating shaft (10) runs through the inner cavity of the water regulating device (6), the outer wall of the rotating shaft (6) is sleeved with stirring blades (11), and the right side wall of the water regulating device (6) Oxygen delivery pipeline (12) is connected, and the right side wall of described water regulating device (6) is connected with contact oxidation tank (13) through water delivery pipeline, and the right end of described contact oxidation tank (13) is connected with water delivery pipeline with A sedimentation tank (14), the top of the sedimentation tank (14) is movably connected with a cover plate (15), and the left and right sides of the bottom of the sedimentation tank (14) are fixedly connected with hydraulic telescopic rods (16). The top of the hydraulic expansion rod (16) is fixedly connected with a sedimentation filter plate (17), and the right end of the sedimentation tank (14) is connected with a sterilizing tank (18) by a water pipeline, and the sedimentation tank (14) The right end is fixedly connected with a return sludge pipeline (22), the left end of the return sludge pipeline (22) is fixedly connected with the bottom left end of the treatment device housing (1), and the top of the sterilizing pool (18) has a disinfection tank (18). agent inlet (19), the inner cavity right side wall of the sterilizing pool (18) is uniformly fixedly connected with an ultraviolet germicidal lamp (20), and the inner cavity of the sterilizing pool (18) is fixedly installed with a rear filter plate horizontally (twenty one). 2. A multi-stage treatment system for medical sewage according to claim 1, characterized in that: the pre-filter mechanism (4) includes two sets of brackets (41), and the left ends of the two sets of brackets (41) are A stainless steel metal mesh plate (42) is fixedly connected by bolts, and the left side wall of the stainless steel metal mesh plate (42) is evenly opened with through holes (43). 3. A multi-stage treatment system for medical sewage according to claim 1, characterized in that: the sedimentation filter plate (17) includes two sets of grid plates (171), and the two sets of grid plates (171) A metal filter screen (172) is fixedly connected between them, and the left and right ends of the grid plate (171) and the metal filter screen (172) are fixedly connected with a sliding block (173). 4. A multi-stage treatment system for medical sewage according to claim 1, characterized in that: the rear filter plate (21) comprises a nonwoven ultrafiltration membrane layer (211), and the nonwoven ultrafiltration An activated carbon adsorption layer (212) is fixedly connected to the bottom of the film layer (211), and a metal mesh layer (213) is fixedly connected to the bottom of the activated carbon adsorption layer (212). 5. A multi-stage water treatment method for medical sewage, comprising the following steps: pretreatment, water quality adjustment, decomposition of organic pollutants, precipitation filtration and sterilization, characterized in that: the multi-stage water treatment method for medical treatment, the specific steps are as follows: S1: Pretreatment: input into the pretreatment device (1) through the pipeline, filter and remove the suspended solids through the pre-filter mechanism (4), and return the medical sewage and the sedimentation tank (14) through the return sludge pipeline (22) The activated sludge is fully mixed for anaerobic digestion and decomposition, so that the organic polymer pollutants in the sewage are initially decomposed into small molecular compounds to facilitate the subsequent treatment process to play a role, and the sewage is input into the water conditioning device (6); S2: water quality adjustment: pass into the water regulating device (6) PH value regulator and ion redox agent, and feed oxygen into the water regulating device (6) through the oxygen delivery pipeline (12), start the stirring motor (9 ) drives the rotating shaft (10) to rotate, and the rotating shaft (10) drives the stirring blade (11) to rotate, so that various ions in the sewage can fully react with the pH regulator and the ion redox agent, so as to adjust the pH value in the sewage to be neutral, Increase the oxygen content of the sewage, degrade the level of heavy metals in the medical sewage, and then pass the sewage into the contact oxidation tank (13); S3: Decomposition of organic pollutants: The contact oxidation tank (13) is filled with fillers with biofilms and is fully contacted and mixed with oxygenated sewage, and oxygen is continuously input into the contact oxidation tank (13), so that the microorganisms can survive under aerobic conditions. The organic pollutants are degraded through metabolism, and the degraded sewage is input into the sedimentation tank (14); S4: Sedimentation Filtration: The degraded sewage is input into the sedimentation tank (14), and the sedimentation filter plate (17) filters the small particle sludge in the sewage and then input into the sterilization and disinfection tank (18), and the sedimentation tank (14) The telescopic end of the hydraulic telescopic rod (16) is regularly raised, the sedimentation filter plate (17) is raised, the cover plate (15) is opened, and the small particle sludge on the sedimentation filter plate (17) is discharged; S5: Sterilization and disinfection: After filtering through the rear filter plate (21), and input the sterilizing disinfectant to the sterilizing and disinfecting pool (18) through the disinfectant inlet (19), the sterilizing and disinfecting agent cooperates with the ultraviolet germicidal lamp (20) to input into the sterilizing The sewage in the disinfection pool (18) is sterilized and sterilized. 6. A multi-stage water treatment method for medical sewage according to claim 5, characterized in that: in the step S1, the sewage enters the pretreatment device housing (1) through the sewage inlet (2), and passes through The suction pump (5) passes the sewage into the water regulating device (6). 7. A kind of multi-stage water treatment method for medical sewage according to claim 5, characterized in that: in the step S2, the acidity and alkalinity of the sewage is displayed by a pH value indicator (7), and is passed through a water adjustment device ( 6) Adjust the sewage to be neutral.