CN218709633U

CN218709633U - Sewage treatment system and farm

Info

Publication number: CN218709633U
Application number: CN202222889607.2U
Authority: CN
Inventors: 林继昌; 蒯路; 陈巧燕; 廖薇; 崔娟
Original assignee: Guangdong Dingrui Construction Engineering Co ltd
Current assignee: Guangdong Dingrui Construction Engineering Co ltd
Priority date: 2022-10-31
Filing date: 2022-10-31
Publication date: 2023-03-24
Anticipated expiration: 2032-10-31

Abstract

The utility model discloses a sewage treatment system, still disclose the plant that has sewage treatment system, sewage treatment system includes the solid-liquid separation district, hydrolysis treatment area and MBR treatment area, the solid-liquid separation district includes the sedimentation tank, hydrolysis treatment area is including the hydrolysis acidification pond that feeds through in the sedimentation tank, the MBR treatment area is including the MBR sewage treatment pond that feeds through in hydrolysis acidification pond, it has the mud back flow still to communicate between MBR sewage treatment pond and the hydrolysis acidification pond, the sedimentation tank can separate out the floater in the sewage, hydrolysis acidification pond can be hydrolyzed insoluble organic matter in the sewage into soluble organic matter, MBR sewage treatment pond can remove ammonia nitrogen compound etc. in the sewage, the undegraded macromolecular material of sediment in MBR sewage treatment pond can flow back to hydrolysis acidification pond and degrade once more, with the effect that improves sewage treatment. The application provides a sewage treatment system, simple structure can effectively reduction in production cost.

Description

Sewage treatment system and farm

Technical Field

The utility model relates to a plant sewage treatment art field, in particular to sewage treatment system and plant.

Background

In the related technology, under the background that the rural areas generally encourage the expansion of breeding production, the livestock and poultry breeding industry in China is developed vigorously, and the industrialized, large-scale and regional development situation is presented in recent years. Because the wastewater discharged by the large-scale livestock and poultry farm is large in amount and high in pollutant concentration, and the attention and the management are lacked for a long time in China, the wastewater becomes one of main pollution sources of most regions and drainage basins in China, and the problems of serious environmental pollution and large amount of nitrogen and phosphorus resource loss and waste are caused every year. The sewage of the farm mainly comprises urine, partial excrement and washing water, belongs to high-concentration organic sewage, and has large content of suspended matters and ammonia nitrogen. After the untreated sewage enters a natural water body, the contents of solid suspended matters, organic matters and microorganisms in the water are increased, the physical, chemical and biological community composition of the water body is changed, and the water quality is deteriorated. The sewage also contains a large amount of pathogenic microorganisms which can be diffused and spread through water or aquatic animals and plants, thus harming the health of people and livestock. Therefore, sewage needs to be purified and then discharged, and the existing sewage treatment device has a complex structure and higher production cost.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a sewage treatment system can deposit, purify sewage to make sewage can reach the environmental protection requirement, reduce the pollution to the environment, and simple structure can effectively reduction in production cost.

The utility model discloses still provide a plant that has above-mentioned sewage treatment system is big.

According to the utility model discloses a sewage treatment system, include:

a solid-liquid separation zone comprising a sedimentation tank;

the hydrolysis treatment area comprises a hydrolysis acidification pool, and the hydrolysis acidification pool is communicated with the sedimentation pool;

MBR treatment area, including MBR sewage treatment pond, MBR sewage treatment pond communicate in the acidizing pond of hydrolysising, MBR sewage treatment pond with it has the mud back flow still to communicate between the acidizing pond of hydrolysising.

According to the utility model discloses sewage treatment system of the embodiment of the first aspect has following beneficial effect at least: the sewage treatment system is provided with a solid-liquid separation area, sewage flows into the solid-liquid separation area, particulate matters or floating matters in the sewage can be separated, so that the sewage can be further purified and treated, then the sewage flows to a hydrolysis acidification tank, insoluble organic matters in the sewage are hydrolyzed into soluble organic matters, macromolecular substances which are difficult to biodegrade are converted into micromolecular substances which are easy to biodegrade, the biodegradability of the sewage is improved, a good water quality environment is provided for the subsequent biochemical treatment, finally the sewage flows to an MBR treatment area, ammonia nitrogen compounds in the sewage are removed, bacteria, viruses and the like, a sludge return pipe is further connected between the MBR sewage treatment tank and the hydrolysis acidification tank, undegraded macromolecular substances precipitated in the MBR sewage treatment tank flow back to the hydrolysis acidification tank to be degraded again, and the sewage treatment effect is improved. The application provides a sewage treatment system, simple structure can effectively reduction in production cost.

According to some embodiments of the utility model, the solid-liquid separation district still includes solid-liquid separation machine, solid-liquid separation machine's play water end communicate in the sedimentation tank.

According to some embodiments of the utility model, the sewage treatment system still includes the equalizing basin, the play water end of equalizing basin communicate in solid-liquid separation machine's the end of intaking.

According to some embodiments of the utility model, the solid-liquid separation machine with the intercommunication has middle cask between the sedimentation tank.

According to some embodiments of the utility model, the end of intaking of mud back flow is followed the bottom in MBR sewage treatment pond communicate in MBR sewage treatment pond, the play water end of mud back flow is followed the top in hydrolysis-acidification pond communicate in hydrolysis-acidification pond.

According to some embodiments of the utility model, MBR treatment area is still including nitrifying the liquid backwash pump, nitrify the end of intaking of liquid backwash pump and be located the good oxygen district of MBR sewage treatment pond, nitrify the play water end of liquid backwash pump and be located the anoxic zone in MBR sewage treatment pond.

According to some embodiments of the utility model, the MBR treatment area still includes the fan, the fan is equipped with first play tuber pipe and second play tuber pipe, first play tuber pipe communicate in MBR sewage treatment pond, the second play tuber pipe communicate in the hydrolysis-acidification pond.

According to some embodiments of the utility model, the MBR treatment area still includes the backwash pump, the water outlet end of backwash pump communicate in the first outlet pipe of MBR sewage treatment pond.

According to some embodiments of the utility model, MBR treatment area still includes the clear water case, the water inlet of clear water case communicate in first outlet pipe, the end of intaking of backwash pump communicate in the clear water case.

According to the utility model discloses plant of second aspect embodiment, including the sewage treatment system of the above-mentioned first aspect embodiment.

The utility model discloses plant of second aspect embodiment has following beneficial effect at least: be provided with sewage treatment system in the plant, can handle the back with the sewage that produces and discharge to reduce environmental pollution, and this sewage treatment system, simple structure, manufacturing cost is lower, thereby can effectively reduce the cost of plant.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The invention is further described with reference to the following figures and examples, in which:

FIG. 1 is a flow chart of a sewage treatment system according to an embodiment of the present invention;

FIG. 2 is a schematic partial schematic illustration of the solid liquid displacement zone illustrated in FIG. 1;

fig. 3 is a partial configuration diagram of the MBR processing area shown in fig. 1.

Reference numerals:

a solid-liquid separation zone 100; a sedimentation tank 110; a conditioning tank 120; a sewage inlet pipe 121; a solid-liquid separator 130; an intermediate water tub 140; a water inlet pump 150;

a hydrolysis treatment zone 200; a hydrolysis acidification tank 210; a sludge return pipe 220; a sludge recirculation pump 230;

an MBR treatment zone 300; an MBR sewage treatment tank 310; a first water outlet pipe 311; a nitrifying liquid reflux pump 320; a fan 330; a first air outlet pipe 331; a second air outlet pipe 332; a water production pump 340; a sterilizer 350; a clear water tank 360; a backwash pump 370; a second water outlet pipe 371; a medicament cartridge 380; a drug wash pump 381; a filter 390.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

Referring to fig. 1 to 3, a sewage treatment system according to an embodiment of the present invention includes a solid-liquid separation zone 100, a hydrolysis treatment zone 200, and an MBR treatment zone 300. It should be noted that an arrow along the pipeline in fig. 1 is a flowing direction of the sewage, the sewage flows into the solid-liquid separation zone 100 to separate particulate matters or floating matters from the sewage, so as to further purify the sewage, then the sewage flows into the hydrolysis treatment zone 200 to hydrolyze insoluble organic matters in the sewage into soluble organic matters, convert macromolecular substances that are difficult to be biodegraded into small molecular substances that are easy to be biodegraded, so as to improve biodegradability of the sewage and provide a good water quality environment for subsequent biochemical treatment, finally the sewage flows into the MBR treatment zone 300 to remove ammonia nitrogen compounds, bacteria, viruses and the like from the sewage, and a sludge return pipe 220 is further connected between the MBR treatment zone 300 and the hydrolysis treatment zone 200 to return undegraded macromolecular substances precipitated in the MBR treatment zone 300 to the hydrolysis treatment zone 200 for re-degradation, so as to improve the sewage treatment effect. The application provides a sewage treatment system, simple structure can effectively reduction in production cost.

It should be noted that the MBR is a Membrane bioreactor (Membrane Bio-Reactor), which is a novel sewage treatment technology combining a Membrane separation unit and a biological treatment unit, and can be divided into a flat Membrane, a tubular Membrane, a hollow fiber Membrane and the like according to the structure of the Membrane, and a micro-filtration Membrane, an ultrafiltration Membrane, a nanofiltration Membrane, a reverse osmosis Membrane and the like according to the Membrane pore size.

It should be noted that the solid-liquid separation zone 100 includes a sedimentation tank 110, and the sewage is settled in the sedimentation tank 110 to remove suspended matters in the sewage, so as to facilitate the subsequent further purification treatment of the sewage. For example, the sedimentation tank 110 may be a coagulation sedimentation tank, which adds some pharmaceutical agents (i.e., coagulant and coagulant aid) into the water to make the particles difficult to precipitate in the water aggregate with each other to form colloid, and then combine with the impurities in the water body to form larger floccules. The flocculating constituent has strong adsorption capacity, can not only adsorb suspended matters, but also adsorb partial bacteria and soluble substances, and the flocculating constituent is through adsorbing to make the volume increase and sink. The precipitated wastewater is then directed to the hydrolysis treatment zone 200 for further purification treatment of the wastewater.

In some embodiments of the present invention, the solid-liquid separation zone 100 further comprises a solid-liquid separator 130, the water outlet end of the solid-liquid separator 130 is connected to the water inlet end of the sedimentation tank 110 through a pipeline, the solid-liquid separator 130 can separate the large-volume impurities in the sewage, and the pipeline blockage caused by the large-volume impurities in the sewage can be avoided. The solid-liquid separator 130 may be a slant screen separator.

It should be noted that an intermediate water tank 140 is arranged between the solid-liquid separator 130 and the sedimentation tank 110, the water outlet end of the solid-liquid separator 130 is communicated with the intermediate water tank 140 from the upper end of the intermediate water tank 140, the water inlet end of the sedimentation tank 110 is communicated with the intermediate water tank 140 from the lower end of the intermediate water tank 140, and sewage can smoothly flow into the sedimentation tank 110 by the arrangement of the intermediate water tank 140. It should be noted that a water inlet pump 150 is communicated between the intermediate water bucket 140 and the sedimentation tank 110, and the sewage in the intermediate water bucket 140 is pumped into the sedimentation tank 110 through the water inlet pump 150.

The utility model discloses an in some embodiments, sewage treatment system still includes equalizing basin 120, and equalizing basin 120 has the effect of regulating pondage, balanced quality of water and preliminary treatment to make sewage treatment system can the continuous stable work, make sewage treatment system can not receive the influence of waste water peak flow or peak concentration change, waste water can have a comparatively stable water yield and even quality of water before handling. It should be noted that the adjusting tank 120 is provided with a sewage inlet pipe 121, sewage to be purified enters the adjusting tank 120 from the sewage inlet pipe 121, and the water outlet end of the adjusting tank 120 is communicated with the water inlet end of the solid-liquid separator 130 through a pipeline.

In some embodiments of the present invention, the hydrolysis treatment area 200 includes a hydrolysis acidification tank 210, and the water inlet end of the hydrolysis acidification tank 210 is connected to the water outlet end of the sedimentation tank 110 through a pipeline. It should be noted that, in the hydrolysis acidification tank 210, the hydrolysis bacteria and the acidification bacteria are used to hydrolyze insoluble organic matters in the sewage into soluble organic matters, and to convert the macromolecular substances that are difficult to be biodegraded into the micromolecular substances that are easy to be biodegraded, so as to improve the biodegradability of the waste water and provide a good water quality environment for the subsequent biochemical treatment.

In some embodiments of the present invention, the MBR treatment area 300 includes a MBR sewage treatment tank 310, the water inlet end of the MBR sewage treatment tank 310 is connected to the water outlet end of the hydrolysis acidification tank 210 through a pipeline, sewage flows into the MBR sewage treatment tank 310 from the hydrolysis acidification tank 210 to remove ammonia nitrogen compounds in the sewage, bacteria, viruses, etc., a sludge return pipe 220 is connected between the MBR treatment area 300 and the hydrolysis treatment area 200, so that undegraded macromolecular substances precipitated in the MBR treatment area 300 flow back to the hydrolysis treatment area 200 to be degraded again, thereby improving the effect of sewage treatment.

It should be noted that the water inlet end of the sludge return pipe 220 is communicated with the MBR sewage treatment tank 310 from the bottom of the MBR sewage treatment tank 310, and the water outlet end of the sludge return pipe 220 is communicated with the hydrolysis and acidification tank 210 from the top of the hydrolysis and acidification tank 210, so as to return the sludge precipitated at the bottom of the MBR sewage treatment tank 310 to the hydrolysis and acidification tank 210. It can be understood that the sludge return pipe 220 is connected with a sludge return pump 230, and sludge in the MBR sewage treatment tank 310 is pumped into the hydrolysis acidification tank 210 through the sludge return pipe 220 by the sludge return pump 230.

In some embodiments of the present invention, the MBR treatment area 300 further includes a nitrifying liquid reflux pump 320, the water inlet end of the nitrifying liquid reflux pump 320 is located in the aerobic area of the MBR sewage treatment tank 310, and the water outlet end of the nitrifying liquid reflux pump 320 is located in the anoxic area of the MBR sewage treatment tank 310. It should be noted that the nitrifying liquid in the aerobic zone at the rear section of the MBR sewage treatment tank 310 is refluxed to the anoxic zone at the front end of the MBR sewage treatment tank 310 by the nitrifying liquid reflux pump 320, the nitrifying liquid contains nitrate nitrogen generated by oxidizing ammonia nitrogen by nitrifying bacteria, and the nitrate nitrogen can be mixed with organic matters in the sewage in the anoxic zone after being refluxed to the front end, and the denitrification of the nitrate nitrogen is performed by the denitrifying bacteria, so that the total nitrogen removal is realized. It should be noted that the nitrifying liquid reflux pump 320 may be provided in plural numbers, for example, two or three.

In some embodiments of the present invention, the MBR treatment area 300 further includes a fan 330, the fan 330 is provided with a first air outlet pipe 331 and a second air outlet pipe 332, the first air outlet pipe 331 is connected to the MBR sewage treatment tank 310, and the second air outlet pipe 332 is connected to the hydrolysis-acidification tank 210. By supplying the air flow to the MBR sewage treatment tank 310 and the hydrolysis-acidification tank 210, the reaction efficiency with sewage and the purification effect of sewage can be improved. It should be noted that, a plurality of first air outlet pipes 331 may be provided, for example, two or three.

In some embodiments of the present invention, the MBR treatment area 300 further includes a backwash pump 370, and an outlet end of the backwash pump 370 is connected to the first outlet pipe 311 of the MBR sewage treatment tank 310 for backwashing the sewage treatment system. It should be noted that the MBR treatment area 300 further includes a chemical tank 380, the water outlet end of the chemical tank 380 is communicated with the second water outlet tube 371 of the backwashing pump 370, the second water outlet tube 371 is communicated with the first water outlet tube 311, the chemical in the chemical tank 380 is conveyed to the second water outlet tube 371 through the chemical washing pump 381, and then enters the MBR sewage treatment tank 310 through the first water outlet tube 311 for cleaning.

It should be noted that the second water outlet tube 371 is further communicated with a filter 390 to filter the cleaning solution. The filter 390 may be a safety filter 390, i.e. a precision filter 390, the shell of the cylinder is generally made of stainless steel, the inside of the cylinder is made of tubular filter elements such as PP melt-blown filter, wire-fired filter, folded filter, titanium filter, activated carbon filter, etc., and different filter elements are selected according to different filter media and design processes to meet the requirements of effluent quality.

In some embodiments of the utility model, MBR treatment area 300 still includes clear water tank 360, and the water inlet of clear water tank 360 communicates in first outlet pipe 311 to through producing in water pump 340 with water suction clear water tank 360, the end of intaking of backwash pump 370 communicates in clear water tank 360's bottom, and the water in the extraction clear water tank 360 is the washing liquid, thereby can carry out recycle to the water in clear water tank 360. It should be noted that the clean water tank 360 has a water outlet to discharge excess water.

It should be noted that, the MBR treatment area 300 further includes a sterilizer 350, and the first water outlet pipe 311 is connected to the sterilizer 350, and is capable of sterilizing water. Wherein the sterilizer 350 may be an ultraviolet sterilizer.

The utility model discloses the plant of second aspect embodiment, including the sewage treatment system of above-mentioned first aspect embodiment, be provided with sewage treatment system in the plant, can handle the back with the sewage that produces and discharge to reduce environmental pollution, and this sewage treatment system, simple structure, manufacturing cost is lower, thereby can effectively reduce the cost of plant, and of course the plant still includes above-mentioned sewage treatment system's whole beneficial effect at least, does not describe here any longer.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims

1. A wastewater treatment system, comprising:

a solid-liquid separation zone comprising a sedimentation tank;

2. The wastewater treatment system of claim 1, wherein the solid-liquid separation zone further comprises a solid-liquid separator, and a water outlet end of the solid-liquid separator is communicated with a water inlet end of the sedimentation tank.

3. The sewage treatment system of claim 2, further comprising a regulating tank, wherein a water outlet end of the regulating tank is communicated with a water inlet end of the solid-liquid separator.

4. The wastewater treatment system according to claim 2, wherein an intermediate water tank is communicated between the solid-liquid separator and the sedimentation tank.

5. The sewage treatment system of claim 1, wherein the water inlet end of the sludge return pipe is communicated with the MBR sewage treatment tank from the bottom of the MBR sewage treatment tank, and the water outlet end of the sludge return pipe is communicated with the hydrolysis acidification tank from the top of the hydrolysis acidification tank.

6. The wastewater treatment system of claim 1, wherein the MBR treatment zone further comprises a nitrifying liquid reflux pump, wherein a water inlet end of the nitrifying liquid reflux pump is positioned in an aerobic zone of the MBR wastewater treatment tank, and a water outlet end of the nitrifying liquid reflux pump is positioned in an anoxic zone of the MBR wastewater treatment tank.

7. The sewage treatment system of claim 1, wherein the MBR treatment zone further comprises a fan, the fan is provided with a first air outlet pipe and a second air outlet pipe, the first air outlet pipe is communicated with the MBR sewage treatment tank, and the second air outlet pipe is communicated with the hydrolysis and acidification tank.

8. The sewage treatment system of claim 1, wherein the MBR treatment zone further comprises a backwash pump, and the water outlet end of the backwash pump is communicated with a first water outlet pipe of the MBR sewage treatment tank.

9. The wastewater treatment system of claim 8, wherein the MBR treatment zone further comprises a clean water tank, a water inlet of the clean water tank is communicated with the first water outlet pipe, and a water inlet end of the backwash pump is communicated with the clean water tank.

10. A farm comprising a wastewater treatment system according to any of claims 1 to 9.