KR100365481B1 - Isolation devices of micro-particle in liquid phase for reducing pollutants - Google Patents

Abstract

The present invention, in the lower portion of the condensation or polygonal pyramid aeration tank 30 and the sedimentation tank 40 is connected to the conduit by the conduit in the micro-solids separation device, it is installed on one side of the aeration tank 30, the manure A manure sludge supply conduit 32 for supplying sludge in accordance with the control of the sludge supply control unit 31; An air supply control part 34 connected to the air supply path 33 positioned at the water reservoir of the aeration tank 30; A screw-type organ (35) installed above the waste water surface at the lower part of the aeration tank (30) and having a solid discharge port (36); An ultra-low speed reduction device (37) installed at the end of the screw-type oil (35) to block sludge backflow; An inlet conduit (41) installed over the lower portion of the settling tank (40) from the upper portion of the aeration tank (30) so that the floating liquid undergoing the aeration process in the aeration tank (30) flows into the settling tank (40); A reverse osmosis membrane forming portion 42 that floats on the settling tank 40; A transport conduit 43 connected to the power transfer part 44 at the lower part of the settling tank 40 to reduce the precipitates of the settling tank 40 to the aeration tank 30; Installed on one side of the settling tank 40 is composed of a water treatment system associated conduit 45 to guide the suspended liquid phase passed through the reverse osmosis membrane forming portion 42 to the water treatment system 50 by the transfer power unit 46, The present invention relates to a device for separating fine solids for reducing wastewater pollutants, and because it can separate fine solids, it can greatly contribute to reducing water pollution, and can compost discharged solids without administering moisture control materials.

Description

Isolation devices of micro-particle in liquid phase for reducing pollutants

The present invention relates to a fine solids separating device for reducing pollutants in wastewater, and more particularly, in the separation of various slurry sludges and high concentrations of organic wastes consisting of organic materials into solid and liquid parts, which are not removed from the aeration tank. The present invention relates to a fine solids separation device for reducing pollutants in wastewater, which can be efficiently processed by submerging in a sedimentation tank to a reverse osmosis in a sedimentation tank and then reducing it to an aeration tank.

The livestock wastewater generated from the group breeding of livestock is a collection of organic matter such as manure and feed waste which livestock excrete. Therefore, the livestock waste causes severe water quality and soil pollution due to eutrophication.

Therefore, many incineration treatments have been carried out to quickly decompose the livestock wastewater, but in this case, secondary air pollution is generated, and various methods for composting the livestock wastewater have been studied to prevent this.

For example, European Patent EP0097217A, one of the solid waste treatment methods for livestock wastewater, is a method of promoting composting under aerobic mixing by transporting compost onto a conveyor belt, and British Patent GB300607A allows for good circulation of organic waste in the chamber. It is a way to compost it by inverting it. The above methods use a moisture control material such as sawdust in order to impart pores in the solids and to control moisture since the solids contain a lot of water due to their properties.

In addition, the activated sludge method, which is one of the sewage treatment methods for livestock wastewater, is supplied with air from a lower aeration tank and slowly stirred, and the collected solids are collected and dried.

Various methods have been provided in addition to the livestock wastewater treatment system as described above, but the basic principle is to provide compost which is the final product decomposed and processed by growing microorganisms by supplying appropriate humidity, temperature and air to the waste organic matter, When composting wastewater, it is necessary to add a moisture control material, and there is an incineration method as a composting method without a water control material, but it cannot be a preferable method because of the secondary air pollution generated during incineration.

In addition, the activated sludge method used in the water treatment of livestock wastewater has often lost efficiency when the high concentration of organic waste is mixed, as well as loss of water treatment function.

The present invention has been made in order to solve the problems of the conventional livestock wastewater treatment method, a method for composting wastewater consisting of various animal manure, organic materials such as animal and plant fluids without using a moisture control material. The purpose is to provide.

Another object of the present invention is to provide a fine solids separating apparatus for reducing pollutants in wastewater that can efficiently separate even fine solids.

Still another object of the present invention is to provide a fine solids separating device for reducing pollutants in wastewater, which can utilize an installed facility without attaching expensive equipment in purifying high concentration organic matter.

The above objects of the present invention are connected to the aeration tank and the sedimentation tank, which are independent reaction tanks, respectively, in the aeration tank to release the solid precipitated by the ultra-low speed reduction device to compost without the use of a moisture control material, and in the sedimentation tank, the reverse osmosis membrane forming unit It is achieved by providing a fine solids separator that passes through to convert high concentrations of organics into low concentrations of organics and then links them to the water treatment system.

1 is a schematic diagram of the present invention;

2 is a perspective view of main parts of the present invention.

Explanation of symbols on the main parts of the drawings

30: aeration tank

31: manure sludge supply control unit 32: manure sludge supply conduit

33: air supply path 34: air supply control unit

35: screw type Oga 36: solids outlet

37: ultra low speed reduction device

40: sedimentation tank

41: inlet conduit 42: reverse osmosis membrane forming part

421: pore fermentation medium 422: net

43: conveying conduit 44: power conveying unit

45: conduit for water treatment system 46: transfer power part

50: water treatment system

The present invention, in the lower portion of the condensation or polygonal pyramid aeration tank 30 and the sedimentation tank 40 is connected to the conduit by the conduit in the micro-solids separation device, it is installed on one side of the aeration tank 30, the manure A manure sludge supply conduit 32 for supplying sludge in accordance with the control of the sludge supply control unit 31; An air supply control part 34 connected to the air supply path 33 positioned at the water reservoir of the aeration tank 30; A screw-type organ (35) installed above the waste water surface at the lower part of the aeration tank (30) and having a solid discharge port (36); An ultra-low speed reduction device (37) installed at the end of the screw-type oga (35) to block manure sludge backflow; An inlet conduit (41) installed over the lower portion of the settling tank (40) from the upper portion of the aeration tank (30) so that the floating liquid undergoing the aeration process in the aeration tank (30) flows into the settling tank (40); A reverse osmosis membrane forming portion 42 that floats on the settling tank 40; A transport conduit 43 connected to the power transfer part 44 at the lower part of the settling tank 40 to reduce the precipitates of the settling tank 40 to the aeration tank 30; Installed on one side of the settling tank 40 is composed of a water treatment system associated conduit 45 to guide the suspended liquid phase passed through the reverse osmosis membrane forming portion 42 to the water treatment system 50 by the transfer power unit 46, The present invention relates to a fine solids separating device for reducing wastewater pollutants. The sludge precipitated first in the aeration tank (30) is discharged to the solids outlet (36) using a screw-type organ (35), and the suspended liquid phase not precipitated is an adjacent sedimentation tank ( 40) is precipitated to fine solids, and then the supernatant is discharged through the water treatment system connection conduit 45.

In the present invention, the aeration tank 30 is a reaction tank that induces aggregation of activated sludge as an electron donor by reacting organic wastes with air, and removes solids so as to contain moisture that can be fermented only by the axial molecular sieve.

The aeration tank 30 is in the form of a conical or polypyramid having an open upper portion and a lower inner portion of 50 to 60 °, and supplying air to the water tank by the manure sludge supply conduit 32 and the air supply control unit 34. It consists of a screw-type organ (35) is provided with an air supply path 33 and the ultra-low speed reduction device 37.

The manure sludge supply conduit 32 is installed on the upper side of the aeration tank 30 and is associated with a manure sludge supply control unit 31 for adjusting the supply and circulation of a suitable amount of manure sludge, discharged from the barn 10 After various kinds of waste organic matter including manure are stored and fermented in the manure storage 20, the waste organic sludge is introduced into the aeration tank 30 by the manure sludge supply control unit 31 so as to maintain a constant amount in the aeration tank 30 at all times. do.

The air supply control unit 34 is connected to the air supply path 33 located at the bottom of the aeration tank 30 to supply air to the bottom of the water in accordance with the driving of the drive motor, such air supply to the aeration tank 30 Induces friction between the medium of the flowing high concentration of the organic material to precipitate the organic material by solidifying, the air supply means in the present invention may be any type of air compressor.

The screw-type oga 35 discharges the sludge first precipitated in the aeration tank 30 to the solid discharge port 36, and is formed by inserting a rubber or vinyl hose in a screw conveyor or auger spring, and installing angle within 30 °. And it is installed 2 ~ 4m higher than the waste water surface to reduce the moisture content of the axial solids, which are induced and discharged by gravity removal by water to its own fermentation level.

Ultra-low speed reduction device 37 is connected to the end of the screw-type oga 35. Since it operates at an extremely low speed of about 0.4 to 0.8 times per minute, a small motor can sufficiently operate when decelerating a conventional mass processing system. Compared to, the energy consumption is too low.

Floating liquids undergoing aeration in the aeration tank 30 configured as described above are collected in the liquid reservoir formed in the middle of the aeration tank 30 and flow into the settling tank 40 through the inlet conduit 41.

On the other hand, the sedimentation tank 40 is a conical or polygonal pyramid shape having a lower portion of the internal angle of 50 ~ 60 °, the inlet conduit 41 to introduce a floating liquid through the aeration process in the aeration tank 30, and fine precipitated in the anaerobic state By the conveying conduit 43 which conveys solids to the aeration tank 30 by the power conveying part 44, the reverse osmosis membrane formation part 42 which converts high concentration organic substance into low density organic substance, and the conveying power part 46 It is composed of a water treatment system associated conduit 45 for discharging the purified supernatant to the water treatment system 50.

The settling tank 40 is a reaction tank for sinking the fine solids not separated in the aeration tank 30 to reverse osmosis pressure to reduce the aeration tank 30, the fine solids introduced into the settling tank 40 through the inlet conduit 41 are mutually Aggregated and precipitated or decomposed by its own microorganisms, the precipitated solids are returned to the aeration tank 30 through the conveying conduit 43 by the power conveying unit 44, is converted to a low concentration of organic matter is reverse osmosis membrane forming unit ( Part of the passage 42 is separated into an upper layer and discharged to the water treatment system 50.

The reverse osmosis membrane forming part 42 balances the pore fermentation medium 421 and the pore fermentation medium such as foamed styropol, which are lighter in weight than water, in order to prevent the floating material from rising in the liquid and to separate low concentration organic matter. It is composed of a network 422 that does not corrode.

The pore fermentation medium 421 has a specific gravity lower than that of water in addition to the foamed styropol, and if the form has a plurality of pores therein, synthetic resin foams, inorganic foams or other natural lightweight materials can be used, the diameter of about 5 ~ 25㎜ It is desirable to make the hole smaller as it goes down to the lower layer because it must induce a layer to prevent self-decomposition while preventing the floating phenomenon of suspended solids.

In addition, since the net 422 located at the upper surface of the pore fermentation medium 421 has a specific gravity lower than that of water, it serves to balance the pore fermentation medium 421 floating on the water surface of the precipitation tank 40. The shape of the net 422 may be a supporter of the pore fermentation medium 421, and preferably a stainless net having a hole having a size of 1 cm 2.

The process of separating the fine solids of the wastewater according to the present invention constituted as described above is as follows.

When the liquid waste of the target amount set by the manure sludge supply control unit 31 is supplied into the aeration tank 30 through the manure sludge supply conduit 32, sludge is precipitated by the micro aeration action in the middle and the bottom of the aeration tank 30. The concentrated precipitate is discharged to the solid discharge port 36 by the screw-type oga 35, and the supernatant after fine aeration at the top flows to the settling tank 40 through the inlet conduit 41 by gravity level control. Part of the micro-aeration introduced into the settling tank 40 passes through the reverse osmosis membrane forming unit 42 to be separated into the upper layer and is discharged to the water treatment system 50. The conveying section 44 is recycled to the aeration tank 30 via the conveying conduit 43.

At this time, when the solid phase of the settling tank 40 is conveyed through the conveying conduit 43 and the purified supernatant is discharged to the water treatment system 50, the remaining solids of the aeration tank 30 through the inlet conduit 41 by the lowered water level. This flows in, so that the separation of the fine solids is continuously performed, the supernatant that has passed through the reverse osmosis membrane is connected to the water treatment system 50 by the transfer power unit 46 to be purified and discharged to the effluent level, and discharged in the aeration tank 30 The solids abandoned by the aeration line and the fine solids taken out from the settling tank and reaggregated are discharged out from the bottom of the aeration tank 30 by the screw-type oga 35.

As the above wastewater treatment is repeated, the high concentration organic material having small particles is gradually decomposed and the high concentration organic material having large particles is discharged out of the concentration, so that the high concentration organic material can be converted to low concentration without using a moisture control material. Doubles the water treatment capacity, the solids content is 58 to 63%.

Table 1 below shows a comparison of the water quality before and after the water treatment when the wastewater is treated with the apparatus for separating fine solids according to the present invention, and it can be seen that the water treatment effect of the present invention is excellent.

Comparison of Water Quality Before and After Water Treatment Survey Item Before water treatment (mg / l) After water treatment (mg / l) BODCODT-NT-PSS 18,00020,7675,7404,60043,000 6,0009,3201,2007007,680

The present inventors can reduce the pollutants in the wastewater by reducing the solid contaminants in the wastewater, since they can separate not only the high-concentration organic wastes from the high-concentration organic waste liquids but also the fine solids. In addition, the water content of the discharged sediment is less than 60% level can be used as a good organic fertilizer by composting without administering a moisture control material.

In addition, the use of industrial waste foam styropol as a reverse osmosis membrane forming layer without using an expensive osmosis membrane has the effect of reducing the cost and preventing environmental pollution, and there is no clogging phenomenon of the osmosis membrane.

In addition, the separation device according to the present invention can be easily applied and recycled to the three-stage simple storage tank installed in each livestock farm, and can be installed at an additional cost. The present invention is also applied to the pretreatment process of a comprehensive treatment plant designed at 5000 ppm or less. By means of the installation of a separate separation device, it is possible to activate a plant facility that has become inoperable due to overload.

Claims (9)

In the microsolid separation device of wastewater in which each of the lower portion is a conical or polygonal aeration tank 30 and the settling tank 40 is connected by connecting conduits, A manure sludge supply conduit 32 installed at one upper end of the aeration tank 30 to supply sludge according to the control of the manure sludge supply control unit 31; An air supply control part 34 connected to the air supply path 33 positioned at the water reservoir of the aeration tank 30; A screw-type organ (35) installed above the waste water surface at the lower part of the aeration tank (30) and having a solid discharge port (36); An ultra-low speed reduction device (37) installed at the end of the screw-type oil (35) to block sludge backflow; An inlet conduit (41) installed over the lower portion of the settling tank (40) from the upper portion of the aeration tank (30) so that the suspended liquid undergoes the aeration process in the aeration tank (30); A reverse osmosis membrane forming portion 42 that floats on the settling tank 40; A transport conduit 43 connected to the power transfer part 44 at the lower part of the settling tank 40 to reduce the precipitates of the settling tank 40 to the aeration tank 30; Installed on one side of the settling tank 40 is composed of a water treatment system associated conduit 45 to guide the suspended liquid phase passed through the reverse osmosis membrane forming portion 42 to the water treatment system 50 by the transfer power unit 46, Fine solids separation device for wastewater pollutant reduction. According to claim 1, The screw-type organ (35) is characterized in that the rubber hose or vinyl hose is fitted to the screw conveyor, characterized in that the fine solids separation device for reducing wastewater pollutants. The method of claim 1 or claim 2, wherein the installation angle of the screw-type oga (35) and the fine oil separation device for reducing wastewater pollutants, characterized in that the oga per minute rotation is within 0.4 ~ 0.8 rotation. The method of claim 1 or 2, wherein the screw-type oga (35) is installed to be 2 to 4m higher than the waste water surface to lower the water content of the axial fraction solids induced by the removal of moisture by gravity to its own fermentation level. Characterized in that, the fine solids separation device for reducing wastewater pollutants. According to claim 1, wherein the reverse osmosis membrane forming unit 42 is characterized in that consisting of a pore fermentation medium 421 lighter than water and a non-corrosive net 422, waste water pollutant reducing fine solids separation device . The apparatus of claim 5, wherein the pore fermentation medium (421) has a pore diameter of 5 to 25 mm and a pore becomes smaller as it descends to the lower layer. The method of claim 5 or 6, wherein the pore fermentation medium 421 is one selected from the group consisting of foamed styropol, synthetic resin foam, inorganic foam and natural lightweight materials, for reducing wastewater pollutants Fine solids separator. The apparatus of claim 6, wherein the net 422 is a stainless net having holes having a size of 1 cm 2. According to claim 1, wherein the screw-type organ (35) is characterized in that the rubber hose or vinyl hose is fitted to the auger spring, fine solids separation device for reducing wastewater pollutants.