CN213865851U - Domestic sewage treatment station - Google Patents
Domestic sewage treatment station Download PDFInfo
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- CN213865851U CN213865851U CN202022892350.7U CN202022892350U CN213865851U CN 213865851 U CN213865851 U CN 213865851U CN 202022892350 U CN202022892350 U CN 202022892350U CN 213865851 U CN213865851 U CN 213865851U
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Abstract
The utility model relates to a domestic sewage treatment station. A sewage adjusting area, an anaerobic hydrolysis area, an anoxic nitrification area, a contact oxidation area and an MBR (membrane bioreactor) area are sequentially arranged according to the flow direction of sewage; an anaerobic adjusting tank and a chemical adding device for adding chemicals into the anaerobic adjusting tank are arranged in the sewage adjusting area, an anaerobic tank is arranged in the anaerobic hydrolysis area, an anoxic tank, a sludge tank and a nitrification aeration device for aerating the anoxic tank are arranged in the anoxic nitrification area, a first-stage contact oxidation tank, a second-stage contact oxidation tank and an oxidation aeration device for aerating the second-stage contact oxidation tank are arranged in the contact oxidation area, and a secondary sedimentation tank, an MBR membrane tank and a backwashing tank are sequentially arranged in the MBR membrane area. The utility model discloses construction period is short, can construct fast and drop into operation, and is effectual to the treatment of sewage, has guaranteed the drainage quality of water requirement after handling.
Description
Technical Field
The utility model belongs to the technical field of sewage treatment device, especially, relate to a domestic sewage treatment station.
Background
Domestic sewage is wastewater discharged in daily life of residents, is one of important pollution sources of water body pollution, and mainly comes from residential buildings and public buildings, such as houses, institutions, schools, hospitals, shops, public places, industrial enterprise toilets and the like. Compared with industrial sewage, domestic sewage has its own remarkable characteristics. The pollutants contained in the domestic sewage are mainly organic matters (such as protein, carbohydrate, fat, urea, ammonia nitrogen and the like) and a large amount of pathogenic microorganisms (such as parasitic ova, enteroinfectious viruses and the like). Organic matters existing in domestic sewage are extremely unstable and easily decomposed to generate offensive odor. Bacteria and pathogens propagate in large quantities by taking organic matters in domestic sewage as nutrition, and can cause epidemic of infectious diseases. Therefore, the domestic sewage must be treated before being discharged.
The domestic sewage treatment refers to a purification process for making sewage meet the requirements of water quality for drainage or reuse, and according to the characteristics of the domestic sewage, the domestic sewage treatment method generally comprises a physical treatment method, a chemical treatment method and a biological treatment method, wherein the physical treatment method refers to a method for removing solid pollutants in a suspended state in the sewage by using a screening method, a precipitation method, a filtration method, an air floatation method, an upward floatation method and a reverse osmosis method, the chemical treatment method refers to a method for separating and recovering pollutants in various forms in the sewage by using methods such as neutralization, coagulation, electrolysis, oxidation reduction, steam extraction, adsorption, ion exchange, electroanalysis and the like, and the biological treatment method refers to a method for dissolving the pollutants in the sewage by using the metabolism of microorganisms and converting organic pollutants in a colloidal state into stable harmless substances. With the increasing progress of the technology, the modern sewage treatment process comprehensively adopts the method, and realizes good treatment effect on the biological sewage by fully playing the advantages of various treatment methods.
With the acceleration of urbanization, the infrastructure of new planning areas is also accelerated, and domestic sewage treatment facilities are increasingly widely constructed as one of important infrastructure. The existing sewage treatment facilities generally occupy larger area and have complex structures, so the construction period is long and the sewage treatment facilities are difficult to be put into use quickly. On the other hand, the existing domestic sewage treatment facilities cannot realize the complete treatment of the pollution components in the domestic sewage, and the treatment capability is difficult to meet the increasingly improved treatment requirements.
SUMMERY OF THE UTILITY MODEL
The utility model provides a domestic sewage treatment station with compact structure, short construction period and good treatment effect for solving the technical problems existing in the prior art.
The utility model discloses a solve the technical scheme that technical problem that exists among the well-known technique took and be: a domestic sewage treatment station, which is integrally positioned on the ground; a sewage adjusting area, an anaerobic hydrolysis area, an anoxic nitrification area, a contact oxidation area and an MBR (membrane bioreactor) area are sequentially arranged according to the flow direction of sewage; an anaerobic adjusting tank and a chemical adding device for adding chemicals into the anaerobic adjusting tank are arranged in the sewage adjusting area, an anaerobic tank is arranged in the anaerobic hydrolysis area, an anoxic tank, a sludge tank and a nitrification aeration device for aerating the anoxic tank are arranged in the anoxic nitrification area, a first-stage contact oxidation tank, a second-stage contact oxidation tank and an oxidation aeration device for aerating the second-stage contact oxidation tank are arranged in the contact oxidation area, and a secondary sedimentation tank, an MBR membrane tank and a backwashing tank are sequentially arranged in the MBR membrane area.
The utility model has the advantages that:
the utility model provides a compact reasonable domestic sewage treatment station of structural design compares with current domestic sewage treatment facility, the utility model discloses in establish whole sewage treatment station on the ground, be convenient for construct the construction, shorten construction cycle, can construct fast and use. The domestic sewage treatment station sequentially passes through the sewage regulating tank, the anaerobic tank, the anoxic tank, the primary contact oxidation tank, the secondary sedimentation tank, the MBR membrane tank and the backwashing tank according to the sewage flow direction, so that anaerobic biochemical treatment, anaerobic hydrolysis treatment, nitrification and denitrification treatment, two-stage contact oxidation treatment, precipitation treatment, membrane-biological reaction treatment and backwashing treatment of sewage are realized, long-chain macromolecular organic matters in the sewage are hydrolyzed into short-chain organic matters or inorganic matters, the organic matters which are difficult to biodegrade are converted into the organic matters which are easy to biodegrade, the organic matters are oxidized, ammonia nitrogen and phosphorus are removed, the faster biochemical degradation of active sludge and the organic matters and the high-precision filtration treatment and the like are promoted, the sewage treatment effect is good, and the requirement on the quality of treated drainage water is ensured.
Preferably: the medicine adding device comprises a medicine tank, a medicine pump and a medicine adding pipeline.
Preferably: the anaerobic tank comprises an anaerobic tank body with a sealing cover, and a plurality of elastic three-dimensional fillers are suspended in the anaerobic tank body.
Preferably: the anoxic tank comprises an anoxic tank body, a plurality of elastic three-dimensional fillers are suspended in the anoxic tank body, and a pneumatic stirring device is arranged at the bottom of the anoxic tank body; the nitrification aeration device comprises an aeration fan and an aeration pipeline extending to the bottom of the tank.
Preferably: the primary contact oxidation tank and the secondary contact oxidation tank have the same structure and both comprise contact oxidation tank bodies, and a plurality of biological membrane components are arranged in the contact oxidation tank bodies; the oxidation aeration device comprises an aeration fan and an aeration pipeline extending to the bottom of the tank.
Preferably: the MBR membrane tank comprises a membrane tank body, an MBR membrane module is arranged in the membrane tank body, a stirring device is arranged at the bottom of the membrane tank body, the MBR membrane tank aeration device performs aeration on the MBR membrane tank, and the MBR membrane tank aeration device comprises an aeration fan and an aeration pipeline extending to the bottom of the tank.
Preferably: the sewage treatment device also comprises a sewage collecting tank for collecting domestic sewage and a multi-stage water storage tank consisting of a plurality of water storage tanks connected in series; sewage in the sewage collecting tank is conveyed into the multi-stage water storage tanks through the lifting pumps to be stored in a cache mode, and outlets of the multi-stage water storage tanks are connected to inlets of the anaerobic adjusting tanks through pipelines.
Preferably: the system also comprises an open channel flowmeter, an outlet of the backwashing pool is connected to an inlet of the open channel flowmeter through a pipeline, and the treated clear water is discharged through an outlet of the open channel flowmeter.
Preferably: a sewage delivery pump is arranged on a pipeline between the outlet of the anaerobic adjusting tank and the inlet of the anaerobic tank.
Preferably: the device also comprises a PLC controller, wherein the pneumatic stirring device of the lift pump, the dosing device, the sewage delivery pump and the anoxic tank, the stirring device of the nitrification aeration device, the oxidation aeration device and the MBR membrane tank, the membrane tank aeration device and the open channel flowmeter are all connected with the PLC controller.
Drawings
Fig. 1 is a schematic plan view of the present invention;
FIG. 2 is a schematic view showing the structures of an anaerobic tank, an anoxic tank and a sludge tank in FIG. 1;
FIG. 3 is a schematic view of the primary and secondary contact oxidation ponds of FIG. 1;
FIG. 4 is a schematic structural view of the secondary sedimentation tank, the MBR membrane tank and the backwash tank in FIG. 1.
In the figure:
1. a sewage collection tank; 2. a multi-stage water storage tank; 3. a sewage conditioning zone; 3-1, an anaerobic adjusting tank; 3-2, adding a medicine device; 4. a sewage delivery pump; 5. an anaerobic hydrolysis zone; 5-1, an anaerobic tank; 6. an anoxic nitrification region; 6-1, an anoxic tank; 6-2, a sludge tank; 6-3, a nitrification aeration device; 7. a contact oxidation region; 7-1, a first-stage contact oxidation pond; 7-2, a secondary contact oxidation pond; 7-3, oxidizing and aerating devices; 8. an MBR membrane area; 8-1, a secondary sedimentation tank; 8-2, an MBR membrane tank; 8-3, a backwashing pool; 9. an open channel flow meter; 10. a dosing chamber; 11. a device room; 12. and an electric control room.
Detailed Description
For further understanding of the contents, features and effects of the present invention, the following embodiments are described in detail.
Referring to fig. 1, the domestic sewage treatment station of the present invention is located on the ground as a whole. A sewage adjusting zone 3, an anaerobic hydrolysis zone 5, an anoxic nitrification zone 6, a contact oxidation zone 7 and an MBR membrane zone 8 are arranged in sequence according to the flow direction of sewage.
Specifically, a foundation is constructed in a construction site, basic rafts are constructed on the foundation, a sewage adjusting area 3, an anaerobic hydrolysis area 5, an anoxic nitrification area 6, a contact oxidation area 7 and an MBR (membrane bioreactor) membrane area 8 are divided on a supporting surface formed by the rafts, and sewage flows through the functional areas in sequence to realize a corresponding treatment process.
The outside at this domestic sewage treatment station sets up sewage collecting tank 1 that is used for collecting domestic sewage and the multistage tank 2 that comprises the tank of a plurality of series connections, and domestic sewage's position is collected in sewage collecting tank 1 through the sewage collecting pipe way, and the sewage in the sewage collecting tank 1 is carried into multistage tank 2 through the elevator pump and is carried out the buffer memory formula and store. Multistage water storage tank 2 has great sewage capacity, can carry out the buffer memory to sewage, and the buffering water yield is and balanced quality of water.
Because contain the bold floater usually among the domestic sewage, consequently in order to avoid causing the jam problem to domestic sewage treatment station facility, can set up filtering grille in sewage collecting tank 1, make the in-process that sewage flowed into in sewage collecting tank 1 flow through filtering grille and realize holding back to the bold floater, regularly adopt the manual work to handle holding back the thing, guarantee sewage collecting tank 1 to the collection ability of sewage.
Multistage water storage tank 2 comprises a plurality of series connection's independent water storage tank 2, and the export of last one-level water storage tank passes through the entry of tube coupling to next stage water storage tank, and the sewage in 1 with sewage collecting pool promotes to one-level water storage tank and carries, goes up and the sewage in the water storage tank passes through the pipeline with the mode of overflow and shifts to next stage water storage tank in.
An anaerobic adjusting tank 3-1 and a dosing device 3-2 for adding a medicament into the anaerobic adjusting tank 3-1 are arranged in the sewage adjusting area 3, the outlet of the last stage of the multi-stage water storage tank 2 is connected to the inlet of the anaerobic adjusting tank 3-1 through a pipeline, sewage enters the anaerobic adjusting tank 3-1 for anaerobic biochemical treatment, long-chain high molecular organic matters are hydrolyzed into short-chain organic matters or inorganic matters in the process, and the COD (chemical oxygen demand), BOD (biochemical oxygen demand) and NH of the sewage are reduced3N (indicating ammonia nitrogen content index).
Adding corresponding agents according to the effluent quality of the anaerobic adjusting tank 3-1 (a sewage sampling point is arranged at the outlet position of the anaerobic adjusting tank 3-1, and the effluent quality is detected in a manual sampling mode or an automatic sampling mode to obtain the effluent quality information), improving the C/N ratio of sewage, conditioning the sewage, ensuring the effluent stability, and preliminarily performing anaerobic biochemical treatment on the sewage by using microorganisms in domestic sewage.
In this embodiment, the medicine adding device 3-2 includes a medicine tank, a medicine pump, and a medicine adding pipeline. The drug adding pipeline is connected to a drug adding port of the anaerobic adjusting tank 3-1, the drug is placed into the drug tank, the drug pump is started when the drug needs to be added, and the drug is sent into the anaerobic adjusting tank 3-1 through the drug adding pipeline to be mixed with the sewage.
An anaerobic tank 5-1 is arranged in the anaerobic hydrolysis area 5, the change of the sewage in the anaerobic hydrolysis area 5 is mainly anaerobic hydrolysis acidification, non-soluble organic matters are converted into soluble organic matters, organic matters which are difficult to biodegrade are converted into organic matters which are easy to biodegrade, the biodegradability of the waste water is improved, and the sewage is subjected to hydrolysis acidification so as to ensure the continuous and stable operation of each subsequent sewage treatment facility.
Referring to fig. 2, it can be seen that:
in the embodiment, the anaerobic tank 5-1 comprises an anaerobic tank body with a sealing cover, the inlet of the anaerobic tank 5-1 is connected with the outlet of the anaerobic regulating tank 3-1 through a pipeline, and a sewage delivery pump 4 is arranged on the pipeline between the outlet of the anaerobic regulating tank 3-1 and the inlet of the anaerobic tank 5-1 to provide power for sewage transfer and delivery.
The anaerobic tank is internally suspended with a plurality of elastic three-dimensional fillers which are existing components, and the elastic three-dimensional fillers are widely applied to the field of sewage treatment, have the advantages of long service life, large specific surface area, certain flexibility, rigidity, good resilience performance and the like, and are lighter than water, so that the attachment area of anaerobic microorganisms can be increased by uniformly stretching the materials in the water, organic matters can be better decomposed, and favorable conditions are created for subsequent biochemical reactions.
The anaerobic tank 5-1 improves the removal rate of COD (chemical oxygen demand) and BOD5 (biochemical oxygen demand, which is an important index indirectly representing the degree of pollution of water body by organic matters by using the dissolved oxygen consumed by the metabolism of microorganisms). The anaerobic hydrolysis process relies on the metabolism of a large amount of anaerobic organisms to degrade and convert organic matters, and does not need or only needs a small amount of oxygenation, so that the overall energy consumption can be saved. The anaerobic hydrolysis process is stable in operation, is slightly influenced by the change of the outside air temperature, has the adaptive range of water temperature of 5-40 ℃, and almost has no difference in COD (chemical oxygen demand) removal rate of effluent in winter and summer.
An anoxic tank 6-1, a sludge tank 6-2 and a nitrification aeration device 6-3 for aerating the anoxic tank 6-1 are arranged in the anoxic nitrification region 6. The change of the sewage generated in the anoxic nitrification area 6 is mainly to reduce COD and remove ammonia nitrogen, and the ammonia nitrogen removal process is to remove NH by aerobic bacteria3Oxidation of-N to NO2 -And NO3 -Then NO is released by anaerobic denitrifying bacteria2 -And NO3 -Conversion to N2And (4) discharging.
Referring to fig. 2, it can be seen that:
the anoxic tank 6-1 comprises an anoxic tank body, a plurality of elastic three-dimensional fillers are suspended in the anoxic tank body, the elastic three-dimensional fillers are existing components and are widely applied to the field of sewage treatment, the elastic three-dimensional fillers have the advantages of long service life, large specific surface area, certain flexibility, rigidity, good resilience and the like, and the adopted materials are lighter than water, so that the attachment area of anaerobic microorganisms can be increased by uniformly stretching the materials in the water, organic matters can be better decomposed, and favorable conditions are created for subsequent biochemical reactions.
The bottom of the anoxic tank body is provided with a pneumatic stirring device, so that a certain stirring effect is provided for sewage in the tank, and the reaction rate is increased. The nitrification aeration device 6-3 comprises an aeration fan and an aeration pipeline extending to the bottom of the tank, and the nitrification aeration device 6-3 performs aeration oxygen supply to the sewage in the tank in the process of the aerobic bacteria reaction.
The anoxic nitrification area 6 is a key process for sewage denitrification, and the biological anoxic treatment by adopting the biomembrane method has good denitrification effect and is economic and reliable. The pneumatic stirring device is arranged at the bottom of the anoxic tank 6-1 to provide a certain stirring effect for sewage in the tank, and a small amount of air is supplemented into the tank through the nitrification aeration device 6-3 to fix and partially suspend the facultative aerobe, so that the facultative aerobe is beneficial to fully mixing strains and the sewage, and better provides an environment for denitrifying bacteria to remove ammonia nitrogen.
The sludge tank 6-2 is used for receiving sludge from the anoxic tank 6-1, and a large amount of sludge is generally floated on the surface of the sewage in the anoxic tank 6-1, and the sludge enters the sludge tank 6-2 in an overflowing manner and is periodically treated.
In the contact oxidation zone 7, a primary contact oxidation tank 7-1, a secondary contact oxidation tank 7-2 and an oxidation aeration device 7-3 for aerating the two-stage contact oxidation tank are arranged, the change of the sewage in the contact oxidation zone 7 is mainly the oxidation decomposition of organic matters, and the domestic sewage generally reaches BOD5 due to the higher organic component content: since CODcr is 0.50 and biodegradability is good, a contact oxidation treatment process, which is a biofilm process combining an activated sludge process and a biological process, is used. The activated sludge process and the biological composite biofilm process are widely applied and mature treatment process schemes, have high removal rate of organic pollutants, and can effectively reduce BOD5 and remove ammonia nitrogen.
Referring to fig. 3, it can be seen that:
the primary contact oxidation tank 7-1 and the secondary contact oxidation tank 7-2 have the same structure and both comprise contact oxidation tank bodies, and a plurality of biological membrane components are arranged in the contact oxidation tank bodies; the oxidation aeration device 7-3 comprises an aeration fan and an aeration pipeline extending to the bottom of the tank.
The primary contact oxidation pond 7-1 receives sewage from the anoxic pond 6-1 through a pipeline or in an overflow mode, and the secondary contact oxidation pond 7-2 receives sewage from the primary contact oxidation pond 7-1 in an overflow mode.
Biological membrane components are arranged in the two biological contact oxidation tanks, namely the first-stage contact oxidation tank 7-1 and the second-stage contact oxidation tank 7-2, and combined fillers are arranged in the biological membrane components. The biological membrane has a large surface area, can adsorb a large amount of organic matters in the sewage, and has strong oxidizing capability. While the organic matter is decomposed, the organism of the microorganism is continuously growing and reproducing, that is, the number of the biofilm is increased. Due to the aging and death of microorganisms on the biofilm, the biofilm can fall off from the surface of the filler and then flow out of the pool along with sewage. Due to the adsorption effect of the biological membrane, a thin water layer is often attached to the surface of the biological membrane, organic matters in the water layer are oxidized by the biological membrane and have a concentration much lower than that of the organic matters in the inlet water of the contact oxidation pond, so when sewage flows on the surface of the filler, the organic matters are transferred from the moving sewage to the water layer attached to the surface of the biological membrane and are further adsorbed by the biological membrane. At the same time, oxygen in the air will also pass through the sewage and enter the biofilm. The microorganisms on the biological membrane decompose organic matters and metabolize the organisms under the participation and action of oxygen to generate inorganic matters including carbon dioxide and the like, and the inorganic matters are discharged from the biological membrane to flowing sewage and air through attached water along the opposite direction; under the combined action of these processes, the content of organic matter in the sewage is greatly reduced, and thus the sewage is purified.
A secondary sedimentation tank 8-1, an MBR membrane tank 8-2 and a backwashing tank 8-3 are successively arranged in the MBR membrane area 8. The sewage is sequentially subjected to precipitation, membrane-biological reaction and filtration treatment in the MBR membrane area 8. The secondary sedimentation tank 8-1 is used for carrying out sedimentation on sewage, has the functions of sludge-water separation, sewage clarification and sludge concentration, and can also return sludge generated by the secondary sedimentation tank 8-1 to the previous biological treatment sections, namely the primary contact oxidation tank 7-1 and the secondary contact oxidation tank 7-2. The backwashing tank 8-3 is also called a backwashing filter tank, that is, a filter tank for cleaning a filter layer by adopting a backwashing mode, and is used for finally filtering sewage subjected to membrane-biological reaction, filtering particulate impurities contained in the sewage and clarifying the discharged water.
The secondary sedimentation tank 8-1 receives sewage from the secondary contact oxidation tank 7-2 through a pipeline or in an overflow manner, the MBR membrane tank 8-2 receives sewage from the secondary sedimentation tank 8-1 in an overflow manner, and the backwash tank 8-3 receives sewage from the MBR membrane tank 8-2 in an overflow manner.
Referring to fig. 4, it can be seen that:
the MBR membrane tank 8-2 comprises a membrane tank body, an MBR membrane module is arranged in the membrane tank body, a stirring device is arranged at the bottom of the membrane tank body to provide stirring effect for sewage in the tank, and the MBR membrane tank further comprises a membrane tank aeration device for aerating the MBR membrane tank 8-2, and the membrane tank aeration device comprises an aeration fan and an aeration pipeline extending to the bottom of the tank.
The Membrane-Bioreactor (MBR) technology is a new sewage treatment technology formed by organically combining a modern Membrane separation technology and a traditional sewage biochemical treatment technology, and is also called as a Membrane separation activated sludge process. The MBR technology of the membrane-bioreactor can greatly improve the biochemical treatment effect, the treatment efficiency can be higher, and the effluent quality can be better. On one hand, the membrane-bioreactor utilizes efficient membrane separation technology to retain activated sludge and macromolecular organic matters and the like in a biochemical reaction tank, the activated sludge and the macromolecular organic matters are retained in the biochemical reaction tank for continuous biochemical treatment, the concentration of the activated sludge in the biochemical reaction tank can be flexibly improved, anaerobic and aerobic alternate circulation is realized by controlling the aeration time of a membrane tank aeration device and the stirring time of a stirring device, so that substances which are difficult to degrade can be continuously reacted and degraded, the biochemical reaction for degrading sewage is carried out more rapidly and thoroughly, the removal of ammonia nitrogen is realized, and the quality of outlet water is better. On the other hand, due to the high filtering precision of the membrane separation component in the membrane-bioreactor, the clear and transparent effluent is ensured, and the solid-liquid separation capability of the system is greatly improved.
In the embodiment, the system further comprises an open channel flowmeter 9, an outlet of the backwashing tank 8-3 is connected to an inlet of the open channel flowmeter 9 through a pipeline, the treated clear water is discharged through an outlet of the open channel flowmeter 9, and the open channel flowmeter 9 is used for metering and counting the water discharge amount of the domestic sewage treatment station.
The device also comprises a PLC controller, a lift pump, a dosing pump of the dosing device 3-2, a sewage delivery pump 4, a pneumatic stirring device power element of the anoxic tank 6-1, an aeration fan of the nitrification aeration device 6-3, an aeration fan of the oxidation aeration device 7-3, a stirring device of the MBR membrane tank 8-2, an aeration fan of the membrane tank aeration device and an open channel flowmeter 9 which are all connected with the PLC controller.
In order to monitor the sewage condition of each functional area and provide a control function, an online dissolved oxygen meter, an oxidation-reduction potentiometer and a liquid level meter are arranged in an anaerobic adjusting tank 3-1, an anaerobic tank 5-1, an anoxic tank 6-1, a primary contact oxidation tank 7-1, a secondary contact oxidation tank 7-2, a secondary sedimentation tank 8-1, an MBR membrane tank 8-2 and a backwashing tank 8-3, so as to obtain the dissolved oxygen condition of the sewage, the macroscopic oxidation-reduction condition of the sewage and the liquid level condition of the sewage in real time, a flow meter and an electric control valve can be arranged on a pipeline, the sewage flow in the pipeline is obtained in real time, and the control of the sewage flow in the pipeline is realized through the control of the electric control valve. The online dissolved oxygen meter, the oxidation-reduction potentiometer, the liquid level meter, the flow meter and the electric control valve are all connected with the PLC.
The PLC controller can monitor the running state of each stage of the whole domestic sewage treatment station in real time, the PLC controller simultaneously controls several functional areas, namely an anaerobic adjusting area 3, an anaerobic hydrolysis area 5, an anoxic nitrification area 6, a contact oxidation area 7 and an MBR membrane area 8 (mainly controls the start and stop of a related water pump and the flow of an electric control valve and controls the start and stop of each stirring device and an aeration device to realize), so the running of the domestic sewage treatment station is more stable and reliable, and the automation degree is high.
Furthermore, a remote cloud platform can be further arranged, wireless communication connection between the PLC and the remote cloud platform is enabled, the PLC of the domestic sewage treatment station transmits the operation condition of the station to the remote cloud platform, remote checking of the working condition of the sewage treatment station is achieved, historical data are accumulated, such as the working time, the working state, the alarm and the operation condition of a water pump and each component, the accumulation of the operation data is provided for the domestic sewage treatment station, and the later-stage management and maintenance reference is facilitated. Meanwhile, a control instruction is sent to the sewage treatment station in a wireless mode through the remote cloud platform, and the sewage treatment station is operated and controlled (mainly, the start and stop of a related water pump and the flow of an electric control valve are controlled, and the start and stop of each stirring device and each aeration device are controlled).
As shown in fig. 1, the domestic sewage treatment station further includes a dosing room 10, an equipment room 11, and an electric control room 12. The dosing room 10 is used for accommodating the dosing device 3-2, a medicament tank, a medicament pump and the like of the dosing device 3-2 are positioned in the dosing room 10, and an operator can enter the dosing room 10 to supplement and prepare medicaments. The equipment room 11 is mainly used for accommodating equipment such as a lifting pump and a sewage delivery pump 4, the electric control room 12 is used for accommodating an electric control system of the sewage treatment station, namely, the PLC and accessory components (such as wireless communication components) thereof, and an operator enters the electric control room 12 to operate the domestic sewage treatment station.
Claims (10)
1. A domestic sewage treatment station, which is integrally positioned on the ground; the method is characterized in that: a sewage adjusting area (3), an anaerobic hydrolysis area (5), an anoxic nitrification area (6), a contact oxidation area (7) and an MBR (membrane bioreactor) area (8) are sequentially arranged according to the flow direction of sewage; an anaerobic adjusting tank (3-1) and a drug adding device (3-2) for adding a drug into the anaerobic adjusting tank (3-1) are arranged in the sewage adjusting area (3), an anaerobic tank (5-1) is arranged in the anaerobic hydrolysis zone (5), an anoxic tank (6-1), a sludge tank (6-2) and a nitrification aeration device (6-3) for aerating in the anoxic tank (6-1) are arranged in the anoxic nitrification zone (6), a first-stage contact oxidation tank (7-1), a second-stage contact oxidation tank (7-2) and an oxidation aeration device (7-3) for aerating in the second-stage contact oxidation tank are arranged in the contact oxidation zone (7), a secondary sedimentation tank (8-1), an MBR membrane tank (8-2) and a backwashing tank (8-3) are arranged in the MBR membrane area (8) in sequence.
2. The domestic sewage treatment station of claim 1, wherein: the medicine adding device (3-2) comprises a medicine tank, a medicine pump and a medicine adding pipeline.
3. The domestic sewage treatment station of claim 2, wherein: the anaerobic tank (5-1) comprises an anaerobic tank body with a sealing cover, and a plurality of elastic three-dimensional fillers are hung in the anaerobic tank body.
4. The domestic sewage treatment station of claim 3, wherein: the anoxic tank (6-1) comprises an anoxic tank body, a plurality of elastic three-dimensional fillers are suspended in the anoxic tank body, and a pneumatic stirring device is arranged at the bottom of the anoxic tank body; the nitrification aeration device (6-3) comprises an aeration fan and an aeration pipeline extending to the bottom of the tank.
5. The domestic sewage treatment station of claim 4, wherein: the primary contact oxidation tank (7-1) and the secondary contact oxidation tank (7-2) have the same structure and both comprise contact oxidation tank bodies, and a plurality of biological membrane components are arranged in the contact oxidation tank bodies; the oxidation aeration device (7-3) comprises an aeration fan and an aeration pipeline extending to the bottom of the tank.
6. The domestic sewage treatment station of claim 5, wherein: the MBR membrane tank (8-2) comprises a membrane tank body, an MBR membrane module is arranged in the membrane tank body, a stirring device is arranged at the bottom of the membrane tank body, and the MBR membrane tank further comprises a membrane tank aeration device for aerating the MBR membrane tank (8-2), and the membrane tank aeration device comprises an aeration fan and an aeration pipeline extending to the bottom of the tank.
7. The domestic sewage treatment station of claim 6, wherein: the domestic sewage treatment device also comprises a sewage collecting tank (1) for collecting domestic sewage and a multi-stage water storage tank (2) consisting of a plurality of water storage tanks connected in series; sewage in the sewage collecting tank (1) is conveyed into the multi-stage water storage tank (2) through the lifting pump to be stored in a cache mode, and an outlet of the multi-stage water storage tank (2) is connected to an inlet of the anaerobic adjusting tank (3-1) through a pipeline.
8. The domestic sewage treatment station of claim 7, wherein: the system also comprises an open channel flow meter (9), the outlet of the backwashing pool (8-3) is connected to the inlet of the open channel flow meter (9) through a pipeline, and the treated clean water is discharged through the outlet of the open channel flow meter (9).
9. The domestic sewage treatment station of claim 8, wherein: a sewage delivery pump (4) is arranged on a pipeline between the outlet of the anaerobic adjusting tank (3-1) and the inlet of the anaerobic tank (5-1).
10. The domestic sewage treatment station of claim 9, wherein: the device is characterized by further comprising a PLC (programmable logic controller), wherein the pneumatic stirring device of the lift pump, the dosing device (3-2), the sewage delivery pump (4) and the anoxic tank (6-1), the nitrification aeration device (6-3), the oxidation aeration device (7-3), the stirring device of the MBR (membrane bioreactor) membrane tank (8-2), the membrane tank aeration device and the open channel flowmeter (9) are connected with the PLC.
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| CN202022892350.7U CN213865851U (en) | 2020-12-03 | 2020-12-03 | Domestic sewage treatment station |
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| CN202022892350.7U CN213865851U (en) | 2020-12-03 | 2020-12-03 | Domestic sewage treatment station |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114804511A (en) * | 2022-04-01 | 2022-07-29 | 苏州中晟环境修复有限公司 | Integrated equipment and process applied to high-concentration organic wastewater treatment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114804511A (en) * | 2022-04-01 | 2022-07-29 | 苏州中晟环境修复有限公司 | Integrated equipment and process applied to high-concentration organic wastewater treatment |
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