CN211226837U

CN211226837U - Modularization sewage treatment plant

Info

Publication number: CN211226837U
Application number: CN201922316457.4U
Authority: CN
Inventors: 赵文博; 戈学珍; 赵胜明; 赵文峰
Original assignee: Qingdao Juchuan Environmental Protection Technology Co ltd
Current assignee: Qingdao Juchuan Environmental Protection Technology Co ltd
Priority date: 2019-12-20
Filing date: 2019-12-20
Publication date: 2020-08-11
Anticipated expiration: 2029-12-20

Abstract

The utility model relates to a modularization sewage treatment plant, including the grid treatment tank that sets gradually, the equalizing basin, the hydrolytic acidification pond, the contact oxidation pond, the MBR membrane cisterna, the clean water basin, the grid treatment tank is located the side top of equalizing basin, the grid treatment pond, the top of equalizing basin communicates with each other, the equalizing basin passes through the second sewer line with the hydrolytic acidification pond and is connected, hydrolytic acidification pond middle part sets up first filler district, hydrolytic acidification pond and contact oxidation pond, MBR membrane cisterna integration sets up, set up first water service mouth between hydrolytic acidification pond and the contact oxidation pond, the middle part of contact oxidation pond sets up the second filler district, the below in second filler district sets up micropore aeration dish, the contact oxidation pond, set up the second water service mouth between the upper portion of MBR membrane cisterna, MBR membrane cisterna passes through the drinking-water pipe with the clean water basin and is connected. Is suitable for sewage treatment in rural areas and has high sewage treatment efficiency.

Description

Modularization sewage treatment plant

Technical Field

The utility model belongs to the technical field of sewage treatment, concretely relates to modularization sewage treatment plant.

Background

The information disclosed in this background section is only for enhancement of understanding of the general background of the invention type and is not necessarily to be taken as an acknowledgement or any form of suggestion that this information constitutes prior art already known to a person skilled in the art.

The modularized sewage treatment device is widely applied to the fields of buildings, agriculture, traffic, energy, petrifaction, environmental protection, urban landscape, medical treatment, catering and the like, and the pollution sources of water mainly comprise chemical fertilizer and pesticide, industrial wastewater and domestic sewage; in any field of sewage treatment equipment, sewage needs to be pretreated and precipitated, impurities are removed, and the sewage is discharged after purification procedures such as filtration, biological treatment and the like.

In the sedimentation process, a sedimentation tank is usually adopted, impurities such as sludge and particles are precipitated in the pretreated sewage in the sedimentation tank, and the precipitated sewage is introduced into a filtering unit and a biological treatment unit for further purification.

After the sedimentation tank is used for a long time, the bottom of the sedimentation tank can be enriched with a large amount of impurities such as silt, particles and the like, the sedimentation tank is generally required to be cleaned regularly in order to ensure the quality of sewage treatment, the water in the sedimentation tank is generally required to be emptied in the existing cleaning mode, and the impurities at the bottom of the sedimentation tank are manually removed; and the sewage treatment equipment needs to stop working in the cleaning process; the cleaning mode of the sedimentation tank is complex in operation, consumes a large amount of working hours and labor cost, and influences the efficiency of sewage treatment.

The sewage treatment in rural areas is weak in consciousness, the problem of water resource shortage at the present stage is large, and the substances contained in the produced domestic sewage are different according to different life styles of various areas, so that the best treatment effect is difficult to obtain by the existing treatment equipment and method.

SUMMERY OF THE UTILITY MODEL

To the problems existing in the prior art, the utility model aims to provide a modularized sewage treatment device.

In order to solve the technical problem, the utility model discloses the technical scheme of type does:

a modularized sewage treatment device comprises a grid treatment tank, an adjusting tank, a hydrolysis acidification tank, a contact oxidation tank, an MBR membrane tank and a clean water tank which are sequentially arranged, wherein the adjusting tank, the hydrolysis acidification tank, the contact oxidation tank and the MBR membrane tank are of a closed box structure, the grid treatment tank is positioned above the side of the adjusting tank, the top of the grid treatment tank and the top of the adjusting tank are communicated, the adjusting tank is connected with the hydrolysis acidification tank through a hydrolysis acidification water inlet pipeline, a first filler area is arranged in the middle of the hydrolysis acidification tank, the hydrolysis acidification tank is integrally arranged with the contact oxidation tank and the MBR membrane tank, the hydrolysis acidification tank is communicated with the contact oxidation tank through a first water inlet at the lower part, a second filler area is arranged in the middle of the contact oxidation tank, a second water inlet is arranged between the upper parts of the MBR membrane tank and the clean water tank, the MBR membrane tank is connected with the clean water tank through a water pumping pipeline, the sludge pump is respectively connected with the hydrolysis acidification tank and the outside through a sludge pipeline.

The utility model discloses a modularization sewage treatment plant of type can realize the centralized processing to rural sewage, and the sewage treatment effect that contains the material difference all has better effect. The adjusting tank, the hydrolysis-acidification tank, the contact oxidation tank and the MBR membrane tank are of a box body structure, are convenient to set and can be applied to high and cold areas and areas with higher temperature when being arranged underground. The fillers arranged in the first filler area and the second filler area degrade macromolecular organic matters by using complex microbial communities, so that the macromolecular organic matters can be well degraded at both higher temperature and lower temperature.

The utility model discloses a modularization sewage treatment plant of type, through the integration setting of hydrolysis acidification pond, contact oxidation pond, MBR membrane cisterna, sewage can be automatic flow to contact oxidation pond, MBR membrane cisterna from hydrolysis acidification pond, sewage is continuous production mud at continuous flow in-process, and mud is from the bottom direct discharge of MBR membrane cisterna or some return hydrolysis acidification pond and carry out further processing so saved the step of clearance mud.

In some embodiments, cage structures are respectively arranged in the middle parts of the hydrolysis acidification tank and the contact oxidation tank, and elastic three-dimensional combined filler is filled in the cages.

In some embodiments, the modular sewage treatment device comprises a cleaning and dosing device and a backwashing pump, the backwashing pump is connected with a clean water tank through a backwashing water pumping pipeline, the cleaning and dosing device is connected with a water pumping pipeline of the MBR membrane tank through a dosing pipeline, and a backwashing water outlet pipeline of the backwashing pump is connected and communicated with the dosing pipeline.

In some embodiments, a microporous aeration disc is arranged below the second filling area of the contact oxidation pond, and a first aeration fan is arranged above the modular sewage treatment device and is connected with the microporous aeration disc through a first air inlet pipe.

In some embodiments, a UPVC aeration pipeline is arranged below the MBR membrane in the MBR membrane tank, a second aerator is arranged above the modular sewage treatment device, and the second aerator is connected with the UPVC aeration pipeline in the MBR membrane tank through a second air inlet pipe.

In some embodiments, the interior of the clean water tank is divided into a water collecting area and a disinfection area, the upper parts of the water collecting area and the disinfection area are communicated through an overflow port, a backwashing water pumping pipeline is connected with the water collecting area, the modular sewage treatment device comprises a disinfection and drug adding device, and the disinfection and drug adding device is connected with the disinfection area through a disinfection and drug adding pipeline.

In some embodiments, an inclined grid is disposed inside the grid treatment basin.

In some embodiments, the grid treatment tank is connected with the regulating tank through a water inlet pipeline, and the water inlet pipeline inside the regulating tank is arranged in an L shape. The adjusting tank is mainly used for adjusting and homogenizing the water quantity and the water quality, so that the balance and stability of the water quantity and the water quality of a subsequent biochemical treatment system are ensured, organic matters in sewage play a certain degradation effect, and the impact resistance and the treatment effect of the whole system are improved. The L-shaped arrangement can be that the inlet water slowly enters the bottom of the adjusting tank, and the first lift pump is arranged at the position opposite to the water outlet end of the L-shaped inlet water pipeline, so that the stability of the outlet water is facilitated.

In some embodiments, a first lift pump is arranged in the regulating tank at a position opposite to the water inlet pipeline, the water outlet end of the first lift pump is connected with the hydrolysis acidification water inlet pipeline, and one end of the water inlet pipeline in the hydrolysis tank is positioned above the first filler area.

In some embodiments, a reflux pump is arranged at the position far away from the first water through port at the bottom of the contact oxidation tank, the water outlet end of the reflux pump is connected with a nitrifying liquid reflux pipeline, and the other end of the nitrifying liquid reflux pipeline is connected with the hydrolysis acidification tank.

In some embodiments, the modular sewage treatment device comprises a PLC control cabinet, and the PLC control cabinet is respectively connected with the first lift pump, the second lift pump, the first aeration fan, the second aeration fan, the self-priming pump, the backwashing pump, the cleaning and dosing device, the disinfection and dosing device, and the sludge pump.

The utility model discloses the beneficial effect of type:

the utility model discloses a modularization sewage treatment plant makes the quality of water after handling reach national sewage discharge standard. Meanwhile, the secondary water can be further treated to be converted into reclaimed water, namely primary water. The device adopts the industrial production and open caisson type closed construction process, has the advantages of convenient installation, flexible layout, small occupied area, long cleaning period, convenient management and obvious pollution treatment effect, fundamentally treats the pollution of underground water sources and river channels and prevents the pollution of the water sources.

The utility model discloses the online chemical cleaning's of type time is also very fast. And moreover, the method saves labor, and can effectively prevent the problems of broken filaments of the membrane component, damage to the membrane component and the like compared with external immersion chemical cleaning.

Drawings

The accompanying drawings, which form a part of the specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification.

FIG. 1 is a structural diagram of a modular sewage treatment apparatus of the present invention;

the device comprises a grid treatment tank 1, a grid treatment tank 2, an adjusting tank 3, a hydrolysis acidification tank 4, a contact oxidation tank 5, an MBR membrane tank 6, a clean water tank 7, a grid, a hydrolysis acidification water inlet pipeline 8, a first filler zone 9, a second filler zone 10, a microporous aeration disc 11, a sludge pump 12, a sludge pipeline 13, a cleaning and dosing device 14, a backwashing pump 15, a backwashing water suction pipeline 16, a backwashing water suction pipeline 17, a cleaning and dosing pipeline 18, a self-priming pump 19, a backwashing water outlet pipeline 20, a first aeration fan 21, a UPVC aeration pipeline 22, a second aeration fan 23, a disinfection and dosing device 24, a first lifting pump 25, a reflux pump 26, a nitrification liquid reflux pipeline 27, a PLC control cabinet 28, a slag removal 29 and a sludge outward transport.

Detailed Description

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The utility model discloses a modularization sewage treatment plant of type is suitable for rural sewage treatment, can set up in the below ground, and the uncovered setting in grid treatment pond.

The utility model discloses a modularization sewage treatment plant's of type basic process flow does: sewage firstly enters a grid treatment pool 1, and larger suspended or floating substances in the sewage are removed through an obliquely arranged grid 7 so as to reduce the treatment load of a subsequent water treatment process and play roles in protecting a water pump, a pipeline, instruments and the like; the grid treatment basin requires periodic slag removal 28.

Sewage enters the regulating tank 2 through a water inlet pipeline, the regulating tank 2 regulates and homogenizes water quantity and water quality, balance and stability of water quantity and water quality of a subsequent biochemical treatment system are guaranteed, organic matters in the sewage play a certain degradation effect, impact resistance and treatment effect of the whole system are improved, and the regulating tank 2 is designed into a box body structure made of a steel concrete structure or FRP (fiber reinforced plastic) material;

the position of the second water through opening is provided with a water collecting tank, which is helpful for the buffering effect of water flow.

Sewage enters into hydrolysis acidification pond 3 from equalizing basin 2 through first elevator pump 24 and hydrolysis acidification inlet water pipeline 8, further mix sewage in hydrolysis acidification pond 3, the inside high-efficient biological elastic filler in the first filler district 9 inside of make full use of pond is as the bacterium carrier, lean on the compatible oxygen microorganism to turn into soluble organic matter with the indissolvable organic matter in sewage, hydrolyze into the micromolecule organic matter with the macromolecule organic matter, in order to do benefit to back contact oxidation pond 4(O level biological treatment pond) further oxidative decomposition, the nitrocarbon nitrogen through the backward flow is under the effect of nitrobacteria simultaneously, can carry out partial nitrification and denitrification, get rid of the ammonia nitrogen.

Sewage enters the contact oxidation tank 4 through the first water through hole, the microporous aeration disc 11 aerates the second filler area 10 at the upper part, and various organic substances in the sewage are removed through the biochemical degradation and adsorption action under the joint participation of a large number of microbial communities of different species attached to the fillers, so that the content of organic substances in the sewage is greatly reduced. Under the condition of lower organic load, the rear section degrades ammonia nitrogen in the sewage under the condition of sufficient oxygen content through the action of nitrobacteria, and simultaneously reduces the COD value in the sewage to a lower level, so that the sewage is purified.

The contact oxidation tank 4 consists of a tank body, a filler, a water distribution device, an oxygenation aeration system and the like. The contact oxidation pond 4 is mainly based on a biomembrane method and has the characteristic of an activated sludge method. The elastic three-dimensional combined filler is adopted as the filler in the pool, and the filler has the advantages of large specific surface area, long service life, easy film hanging, corrosion resistance, no agglomeration and blockage. The filler freely stretches in water, multi-level cutting is made to aquatic bubble, has more increased the aeration effect relatively, and the filler becomes cage installation, and it is convenient to dismantle, overhaul. The pool degrades water quality into gradient, and achieves good treatment effect. The filler is arranged in the cage body, and the cage body is fixedly connected with the inner side walls of the hydrolysis acidification tank and the contact oxidation tank. May be welded or fixed by fixing means such as bolts.

The equalizing basin, hydrolysis-acidification pool, contact oxidation pond, MBR membrane cisterna are the box structure, through design such as hydrolysis-acidification inlet tube, realize the water conservancy diversion and the turbulent flow of rivers, make the global design more tend to rationalize.

The first aeration fan 20 introduces air into the microporous aeration disc 11, and the microporous aeration head of the microporous aeration disc 11 is selected as the microporous aeration head, so that the blockage is avoided, and the oxygen utilization rate is high. The tank is designed as a steel-structured tank body.

The sewage enters the MBR membrane tank 5 through the second water through-opening, organic matters in the sewage are degraded by microorganisms, and other impurities which cannot be degraded are separated by membrane components in the MBR system. In addition, the second aeration fan 22 introduces air into the UPVC aeration pipeline 21, the UPVC aeration pipeline 21 generates air bubbles, the air conveyed into the MBR system is also an important part in the treatment process, the air bubbles can promote the circular flow of fluid in the reactor, the degradation efficiency of activated sludge is improved, mutual friction can be generated between hollow fibers, membrane modules are cleaned, the content of solid suspended particles in the sewage treated by the MBR can reach less than 5mg/L, the turbidity is less than 1NTU, and the water treated by the membrane modules is discharged into a disinfection tank. The tank is designed as a carbon steel structure.

Sewage enters the clean water tank through a water pumping pipeline, a self-sucking pump 18 is arranged on the water pumping pipeline, and one end of the water pumping pipeline is located on one side of the MBR membrane.

The UPVC aeration pipeline 22 adopts a high-quality ABS pipe and is corrosion-resistant.

The bottom of the MBR membrane tank is provided with a sludge pump 12, and the sludge pump 12 is respectively connected with the hydrolysis acidification tank 3 and the outside through a sludge pipeline 13. The sludge is transported outside 29. The return pump 25 returns the nitrified liquid to the hydrolysis acidification tank 3 through a nitrified liquid return pipeline 26,

the clean water tank 6 is divided into a water collecting area and a disinfection area, the water collecting area is communicated with the upper part of the disinfection area, and the disinfection medicine adding device 23 is used for adding a disinfectant into the clean water in the disinfection area, so that the clean water discharged from the disinfection area meets the requirement of sanitary indexes and is recycled or discharged. Here, the disinfectant can be chlorine dioxide, and the disinfecting and medicine adding device 23 is a chlorine dioxide generator.

The backwashing water pumping pipeline 16 is connected with the water collecting area, water in the clear water area is pumped out by the backwashing pump 15 and then enters the backwashing water outlet pipeline 19, the backwashing water outlet pipeline 19 enters the cleaning and medicine adding pipeline 17, the cleaning and medicine adding device 14 sends cleaning liquid medicine into the cleaning and medicine adding pipeline 17, the cleaning and medicine adding pipeline 17 is connected with the water pumping pipeline, and mixed liquid of the cleaning liquid medicine and the clear water enters the MBR membrane through the water pumping pipeline.

MBR membrane because of long-time operation, dirty stifled degree is serious, needs chemical cleaning. During on-line chemical cleaning, the membrane module is still placed in the aeration tank, and compared with external immersion chemical cleaning, the membrane module cleaning device has the advantages that the cleaning is simpler, the membrane module does not need to be taken out of the aeration tank, and corresponding matched tools do not need to be equipped. During on-line chemical cleaning, prepared liquid medicine is injected into the hollow fiber and the pipeline connected with the hollow fiber from the water producing port and soaked, so that the liquid medicine can effectively kill bacteria, organic attachments and the like attached to the inner surface and the outer surface of the membrane wire.

In some embodiments of the present application, the control method of the PLC control cabinet 27 may be as follows:

membrane pool self-priming pump: the membrane tank is provided with a high liquid level and a low liquid level under the control influence of the liquid level of the MBR tank, the suction pump is started at the high liquid level, and the suction pump at the low liquid level stops working; the working time of the suction pump is 8 minutes and 2 minutes;

membrane pool backwashing pump: the on/off time is freely adjusted under the control of time, the time is set to be minutes, and the backwashing program is set to run for 10 minutes;

2 adjusting pool lifting pumps (1 is used for 1): the water pump is started at a high liquid level and stopped at a low liquid level under the control of the liquid level of the regulating tank, and the liquid level can be manually adjusted;

nitrifying liquid reflux pump: the on/off time is freely adjusted under the control of time, and the time is set to be minutes.

A sludge reflux pump: the on/off time is freely adjusted under the control of time, and the time is set to be minutes.

The content of suspended solid particles in the effluent of the MBR membrane tank is lower than 5mg/L, and the turbidity is lower than 1 NTU.

The above description is only a preferred embodiment of the invention and is not intended to limit the invention, which may be modified and varied by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a modularization sewage treatment plant which characterized in that: the device comprises a grid treatment tank, an adjusting tank, a hydrolysis-acidification tank, a contact oxidation tank, an MBR membrane tank, a clean water tank, wherein the grid treatment tank, the hydrolysis-acidification tank, the contact oxidation tank and the MBR membrane tank are sequentially arranged and are of a closed box structure, the grid treatment tank is positioned above the side of the adjusting tank, the top of the grid treatment tank and the top of the adjusting tank are communicated, the adjusting tank is connected with the hydrolysis-acidification tank through a second sewage pipeline, a first filler area is arranged in the middle of the hydrolysis-acidification tank, the hydrolysis-acidification tank is integrally arranged with the contact oxidation tank and the MBR membrane tank, the hydrolysis-acidification tank is communicated with the contact oxidation tank through a first water through hole in the lower part, a second filler area is arranged in the middle of the contact oxidation tank, a second water through hole is arranged between the upper parts of the contact oxidation tank and the MBR membrane tank, the MBR membrane tank is connected with the clean water tank through a sludge water, And connecting outside.

2. The modular wastewater treatment plant of claim 1, wherein: the middle parts of the hydrolysis acidification tank and the contact oxidation tank are respectively provided with a cage body structure, and elastic three-dimensional combined filler is filled in the cage body.

3. The modular wastewater treatment plant of claim 1, wherein: the modularized sewage treatment device comprises a cleaning and dosing device and a backwashing pump, wherein the backwashing pump is connected with a clean water tank through a backwashing water pumping pipeline, the cleaning and dosing device is connected with a water pumping pipeline of an MBR membrane tank through a dosing pipeline, and a backwashing water outlet pipeline of the backwashing pump is connected and communicated with the dosing pipeline.

4. The modular wastewater treatment plant of claim 1, wherein: the lower part of the filler area in the contact oxidation pond is provided with a micropore aeration disc, the upper part of the modularized sewage treatment device is provided with a first aeration fan, and the first aeration fan is connected with the micropore aeration disc through a first air inlet pipe.

5. The modular wastewater treatment plant of claim 1, wherein: inside the MBR membrane tank, the below of MBR membrane sets up the UPVC aeration pipe way, and modularization sewage treatment plant's top sets up the second aeration machine, and the second aeration machine passes through the UPVC aeration pipe way connection of second air-supply line with the MBR membrane tank is inside.

6. The modular wastewater treatment plant of claim 1, wherein: the interior of the clean water tank is divided into a water collecting area and a disinfection area, the upper parts of the water collecting area and the disinfection area are communicated through an overflow port, a backwashing water pumping pipeline is connected with the water collecting area, the modular sewage treatment device comprises a disinfection dosing device, and the disinfection dosing device is connected with the disinfection area through a disinfection dosing pipeline.

7. The modular wastewater treatment plant of claim 1, wherein: the grid that the pond inside set up the slope is handled to the grid, and the pond is handled to the grid is connected through the pipeline of intaking with the equalizing basin, and the inside pipeline of intaking of equalizing basin becomes the L type setting.

8. The modular wastewater treatment apparatus of claim 7, wherein: the inside relative position with the inlet tube of equalizing basin sets up first elevator pump, and the play water end and the hydrolytic acidification inlet tube of first elevator pump are connected, and the one end of the inlet tube of the inside pond of hydrolysising is located the top in first filler district.

9. The modular wastewater treatment plant of claim 1, wherein: and a second lifting pump is arranged at the position, far away from the first water through port, at the bottom of the contact oxidation tank, the water outlet end of the second lifting pump is connected with a nitrifying liquid return pipeline, and the other end of the nitrifying liquid return pipeline is connected with the hydrolysis acidification tank.

10. The modular wastewater treatment plant of claim 1, wherein: the modular sewage treatment device comprises a PLC control cabinet, and the PLC control cabinet is respectively connected with a first lifting pump, a second lifting pump, a first aeration fan, a second aeration fan, a self-sucking pump, a backwashing pump, a cleaning and dosing device, a disinfecting and dosing device and a sludge pump.