CN111977779A - Integrated domestic sewage treatment device convenient for cleaning sludge - Google Patents

Integrated domestic sewage treatment device convenient for cleaning sludge Download PDF

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Publication number
CN111977779A
CN111977779A CN202010800105.0A CN202010800105A CN111977779A CN 111977779 A CN111977779 A CN 111977779A CN 202010800105 A CN202010800105 A CN 202010800105A CN 111977779 A CN111977779 A CN 111977779A
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CN
China
Prior art keywords
biological reaction
bioreactor
reaction tank
tank
sludge
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Withdrawn
Application number
CN202010800105.0A
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Chinese (zh)
Inventor
万天鹏
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Shenzhen Shenke Blue Ocean Environmental Protection Technology Co ltd
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Shenzhen Shenke Blue Ocean Environmental Protection Technology Co ltd
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Priority to CN202010800105.0A priority Critical patent/CN111977779A/en
Publication of CN111977779A publication Critical patent/CN111977779A/en
Withdrawn legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/02—Aerobic processes
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/006—Water distributors either inside a treatment tank or directing the water to several treatment tanks; Water treatment plants incorporating these distributors, with or without chemical or biological tanks
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/02—Aerobic processes
    • C02F3/12—Activated sludge processes
    • C02F3/1236—Particular type of activated sludge installations
    • C02F3/1268—Membrane bioreactor systems
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/30—Aerobic and anaerobic processes
    • C02F3/302—Nitrification and denitrification treatment
    • C02F3/305—Nitrification and denitrification treatment characterised by the denitrification
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/30—Aerobic and anaerobic processes
    • C02F3/308—Biological phosphorus removal
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/30—Organic compounds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2203/00—Apparatus and plants for the biological treatment of water, waste water or sewage
    • C02F2203/006—Apparatus and plants for the biological treatment of water, waste water or sewage details of construction, e.g. specially adapted seals, modules, connections
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00—Specific treatment goals
    • C02F2303/14—Maintenance of water treatment installations
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00—Technologies for wastewater treatment
    • Y02W10/10—Biological treatment of water, waste water, or sewage

Abstract

The invention discloses an integrated domestic sewage treatment device convenient for cleaning sludge, which comprises a box body, wherein a sedimentation tank, a primary biological reaction tank, a secondary biological reaction tank, a membrane biological reaction tank and an equipment room are arranged in the box body and are sequentially communicated. The invention integrates a primary bioreactor, a secondary bioreactor and a membrane bioreactor, fully and efficiently exerts the metabolism of microorganisms in each reactor, removes organic matters in sewage, realizes synchronous nitrogen and phosphorus removal in a short hydraulic retention time, and meets the discharge or recycling standard of domestic sewage; the whole device is integrated in the box body, the structure is compact, the occupied area is small, the cost is greatly reduced, the construction mode is flexible, the construction can be carried out on the ground and underground, the construction difficulty is low, and the construction period is greatly shortened; the recycled purified water is utilized to carry out back flushing on the interior of the bioreactor, the flushed sewage is returned to the sedimentation tank, and then the sludge cleaning port is used for cleaning the sludge periodically, so that the cyclic utilization of the sewage is realized, and the energy is saved.

Description

Integrated domestic sewage treatment device convenient for cleaning sludge
Technical Field
The invention relates to the technical field of sewage treatment, in particular to an integrated domestic sewage treatment device convenient for sludge cleaning.
Background
Sewage, generally refers to effluent water from life and production that is contaminated to some extent. The sewage mainly comprises domestic sewage, industrial wastewater and initial rainwater. The main pollutants of the sewage include pathogen pollutants, oxygen-consuming pollutants, plant nutrients, toxic pollutants and the like. The domestic sewage is the wastewater discharged in daily life of residents, and mainly comes from residential buildings and public buildings, such as houses, institutions, schools, hospitals, shops, public places, industrial enterprise toilets and the like. Domestic sewage contains a large amount of organic substances, and the organic substances in the domestic sewage are extremely unstable and easy to decay to generate stink. Bacteria and pathogens propagate in large quantities by taking organic matters in domestic sewage as nutrition, and can cause epidemic of infectious diseases. Therefore, domestic sewage must be treated before being discharged.
However, the existing sewage treatment equipment has the problems of complex structure, large installation occupied area and low sewage treatment efficiency; in some miniature sewage treatment plants, often carry out sewage treatment through methods such as combining biology, sediment, the condition of mud siltation will appear in the long-time operation, and traditional mud mode of arranging sets up complicated mud pipe way in treatment facility to and supporting installation mud backwash pump, thereby discharge the mud of siltation, the defect that this kind of mode exists: the sludge reflux pump is usually arranged at the bottom of the treatment tank and is vertically connected with the sludge discharge pipe, the sludge collection range is limited, the effect is poor, and in order to ensure the sewage treatment effect, the sludge needs to be frequently cleaned, so the maintenance period is short, and the sewage treatment equipment is usually subjected to comprehensive large sludge cleaning and equipment maintenance, so the resource consumption is large, and the overall maintenance is inconvenient; secondly, a sludge treatment area needs to be newly built outside the equipment for the discharged sludge to collect the sludge and muddy water mixed liquid, so that the cost is high and the process is complicated.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides an integrated domestic sewage treatment device convenient for cleaning sludge.
In order to achieve the purpose, the invention is implemented according to the following technical scheme:
an integrated domestic sewage treatment device convenient for sludge cleaning comprises a box body, wherein a sedimentation tank, a primary biological reaction tank, a secondary biological reaction tank, a membrane biological reaction tank and a device room are arranged in the box body and are sequentially communicated, a sewage inlet is formed in the upper part of one side of the sedimentation tank, biological reactors are arranged in the primary biological reaction tank and the secondary biological reaction tank, and membrane biological reactors are arranged in the membrane biological reaction tank;
the bioreactor comprises a tank body, a feeding port is arranged at the top of the tank body, a discharging port is arranged at the bottom of the tank body, a motor is fixed at the top end of the tank body and is connected with a control cabinet, a stirring shaft is longitudinally arranged at the center of the tank body, the top end of the stirring shaft penetrates through the top end of the tank body and is axially and fixedly connected with the end part of an output shaft of the motor, a plurality of stirring blade layers are fixed on the stirring shaft from top to bottom, each stirring blade layer consists of two stirring blades which are symmetrically distributed, a water flow distribution plate is arranged above each stirring blade layer, the outer side wall of each water flow distribution plate is fixed on the inner side; the water inlet of the bioreactor is arranged on one side wall of the bottom of the tank body, a one-way valve is arranged in the water inlet of the bioreactor, the water outlet of the bioreactor is arranged on one side wall of the upper part of the tank body, the air inlet of the bioreactor is arranged on the other side wall of the bottom of the tank body, and an electromagnetic valve is arranged in the air inlet of the bioreactor; the top of the tank body is also provided with a flushing pipe, the tail end of the flushing pipe penetrates through the top of the tank body and extends into the tank body, the top of the flushing pipe is connected with a water outlet of a high-pressure water pump, a water inlet of the high-pressure water pump is communicated with a purified water outlet, the tail end of the flushing pipe is fixedly provided with an annular pipe, the annular pipe and a stirring shaft are concentrically arranged, and the lower end of the annular pipe is provided with a plurality of high-;
the upper part of the other side of the sedimentation tank is provided with an overflow port, the overflow port is connected to a water inlet of a bioreactor in the primary biological reaction tank through a pipeline, a water outlet of the bioreactor in the primary biological reaction tank is connected to a water inlet of a bioreactor in the secondary biological reaction tank through a pipeline, a water outlet of the bioreactor in the secondary biological reaction tank is connected to a water inlet of a membrane bioreactor through a pipeline, a water outlet of the membrane bioreactor is connected to a purified water outlet through a pipeline, and the purified water outlet is arranged on one side wall of the equipment room; the top of the equipment room is provided with a fan, and an air outlet of the fan is respectively connected with air inlets of the bioreactors in the primary biological reaction tank and the secondary biological reaction tank through pipelines; sludge pumps are installed at the discharge ports at the bottoms of the bioreactors in the primary biological reaction tank and the secondary biological reaction tank, the inlet of each sludge pump is connected with the discharge ports at the bottoms of the bioreactors in the primary biological reaction tank and the secondary biological reaction tank, and the outlet of each sludge pump is connected to a sewage inlet through a pipeline sludge pipe;
and a sludge cleaning port is arranged on one side of the sedimentation tank.
Furthermore, a control cabinet connected with the bioreactors, the fan, the electromagnetic valve, the high-pressure water pump and the sludge pump in the primary biological reaction tank and the secondary biological reaction tank is also arranged in the equipment room.
Further, the bioreactor comprises a tank body, a feed inlet is formed in the top of the tank body, a discharge port is formed in the bottom of the tank body, a motor is fixed to the top end of the tank body and connected with a control cabinet, a stirring shaft is longitudinally arranged in the center of the tank body, the top end of the stirring shaft penetrates through the top end of the tank body and is axially and fixedly connected with the end portion of an output shaft of the motor, a plurality of stirring blade layers are fixed to the stirring shaft from top to bottom, each stirring blade layer consists of two stirring blades which are symmetrically distributed, a water flow distribution plate is arranged above each stirring blade layer, the outer side wall of each water flow distribution plate is fixed to the inner side wall of the; the water inlet of the bioreactor is arranged on one side wall of the bottom of the tank body, the water outlet of the bioreactor is arranged on one side wall of the upper part of the tank body, and the air inlet of the bioreactor is arranged on the other side wall of the bottom of the tank body.
Furthermore, the water flow distribution plate is in a shape of a conical cylinder, the cone angle is 130-160 degrees, and round holes are uniformly distributed on the surface of the conical cylinder of the water flow distribution plate.
Furthermore, the aperture of the circular hole on the water flow distribution plate distributed on the tank body from bottom to top is gradually reduced.
Furthermore, a cross bar is fixed in the round hole on the water flow distribution plate along the diameter, and a plurality of tooth sheets are arranged on the cross bar.
Further, the membrane bioreactor is an MBR membrane bioreactor.
Further, the fan is a variable frequency fan.
Furthermore, a partition plate is arranged in the sedimentation tank, the height of the partition plate is lower than that of the sedimentation tank, the partition plate divides the sedimentation tank into a first cavity and a second cavity, the sewage inlet is formed in the side wall of the upper portion of the first cavity, and the overflow port is formed in the side wall of the lower portion of the second cavity.
Furthermore, a sludge cleaning port is formed in one side wall of the bottom of the first chamber.
Compared with the prior art, the invention integrates the primary bioreactor, the secondary bioreactor and the membrane bioreactor, integrates the sewage treatment function of each reactor, fully and efficiently exerts the metabolism of microorganisms in each reactor, removes organic matters in sewage, realizes synchronous nitrogen and phosphorus removal in shorter hydraulic retention time, and meets the discharge or recycling standard of domestic sewage; the specially designed bioreactors in the primary biological reaction tank and the secondary biological reaction tank can ensure that microorganisms in gas, water and sewage are fully contacted and exchanged to form a turbulent flow state, so that the oxygen transfer rate and the oxygen charging power efficiency are improved, the metabolism of the microorganisms is promoted, the treatment efficiency of the wastewater is enhanced, the ammoniation and hydrolysis of organic matters in domestic sewage can be promoted, and the membrane bioreactor further removes phosphorus and nitrogen from the sewage to realize the deep purification of the sewage; the whole device is integrated in the box body, the structure is compact, the occupied area is small, the cost is greatly reduced, the construction mode is flexible, the construction can be carried out on the ground and underground, the construction difficulty is low, and the construction period is greatly shortened;
in addition, the pore diameter of the circular holes on the water flow distribution plate distributed from bottom to top in the first-stage biological reaction tank and the second-stage biological reaction tank of the invention is gradually reduced, so that the sludge in the sewage can be reduced to flow into the next-stage biological reactor and the membrane bioreactor, the working pressure of the membrane bioreactor is reduced, and the purification efficiency of the membrane bioreactor is improved; furthermore, the invention can utilize the recycled purified water to carry out back flushing on the interior of the bioreactor, return the flushed sewage to the sedimentation tank, and then regularly clean the sludge through the sludge cleaning port, thereby realizing the recycling of the sewage and saving energy.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
FIG. 2 is a schematic view of the structure of the bioreactor of the present invention.
FIG. 3 is a schematic view of the inner structure of the circular holes of the water distribution plate in the bioreactor of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. The specific embodiments described herein are merely illustrative of the invention and do not limit the invention.
As shown in fig. 1, the integrated domestic sewage treatment device convenient for sludge cleaning of the embodiment includes a box body, a sedimentation tank 1, a primary biological reaction tank 2, a secondary biological reaction tank 3, a membrane biological reaction tank 4 and an equipment room 5 which are sequentially communicated are arranged in the box body, a sewage inlet 6 is arranged at the upper part of one side of the sedimentation tank 1, biological reactors 7 are respectively arranged in the primary biological reaction tank 2 and the secondary biological reaction tank 3, and a membrane biological reactor 401 is arranged in the membrane biological reaction tank 4;
as shown in fig. 2, the bioreactor 7 includes a tank 701, a feed inlet 702 is arranged at the top of the tank 701, a discharge port 710 is arranged at the bottom of the tank 701, a motor 703 is fixed at the top end of the tank 701, the motor 703 is connected with a control cabinet 501, a stirring shaft 704 is longitudinally arranged at the center of the tank 701, the top end of the stirring shaft 704 penetrates through the top end of the tank 701 and is axially and fixedly connected with the end part of an output shaft of the motor 703, a plurality of stirring blade layers are fixed on the stirring shaft 704 from top to bottom, each stirring blade layer is composed of two stirring blades 705 which are symmetrically distributed, a water flow distribution plate 707 is arranged above each stirring blade layer, the outer side wall of the water flow distribution plate 707 is fixed on the inner side wall of the; a water inlet 706 of the bioreactor is arranged on one side wall of the bottom of the tank body 701, a one-way valve 706 is arranged in the water inlet of the bioreactor, a water outlet 709 of the bioreactor is arranged on one side wall of the upper part of the tank body 701, an air inlet 708 of the bioreactor is arranged on the other side wall of the bottom of the tank body 701, and an electromagnetic valve 708 is arranged in the air inlet of the bioreactor; the top of the tank body 701 is further provided with a flushing pipe 711, the tail end of the flushing pipe 711 penetrates through the top of the tank body 701 and extends into the tank body 701, the top of the flushing pipe 711 is connected with a water outlet of a high-pressure water pump (not shown in the figure), a water inlet of the high-pressure water pump is communicated with a purified water outlet 6, the tail end of the flushing pipe 711 is fixedly provided with an annular pipe 714, the annular pipe 714 and the stirring shaft 704 are arranged concentrically, and the lower end of the annular pipe 714 is provided with a plurality of high-pressure;
the upper part of the other side of the sedimentation tank 1 is provided with an overflow port 105, the overflow port 105 is connected to a water inlet 706 of a bioreactor in the primary biological reaction tank 2 through a pipeline, a water outlet 709 of a bioreactor 7 in the primary biological reaction tank 2 is connected to a water inlet 706 of a bioreactor in the secondary biological reaction tank 3 through a pipeline, a water outlet 709 of the bioreactor in the secondary biological reaction tank 3 is connected to a water inlet of a membrane bioreactor 401 through a pipeline, the membrane bioreactor 401 is an MBR (membrane bioreactor), the water outlet of the membrane bioreactor 401 is connected to a purified water outlet 6 through a pipeline, and the purified water outlet 6 is arranged on one side wall of the equipment room 5; a fan 502 is arranged at the top of the equipment room 5, and an air outlet of the fan 502 is respectively connected with air inlets 708 of the bioreactors in the primary biological reaction tank and the secondary biological reaction tank through pipelines; the discharge ports 710 at the bottoms of the bioreactors 7 in the primary biological reaction tank 2 and the secondary biological reaction tank 3 are provided with sludge pumps 8, the inlets of the sludge pumps 8 are connected with the discharge ports 710 at the bottoms of the bioreactors 7 in the primary biological reaction tank 2 and the secondary biological reaction tank 3, and the outlets of the sludge pumps 8 are connected to the sewage inlet 6 through pipeline sludge pipes 9;
and a sludge cleaning port 101 is formed in one side of the sedimentation tank 1.
In order to facilitate control, a control cabinet 501 connected with the bioreactor 7, a fan 502, an electromagnetic valve, a high-pressure water pump and a sludge pump in the primary biological reaction tank and the secondary biological reaction tank is also arranged in the equipment room 5, and the fan 502 is a variable frequency fan.
As shown in fig. 3, in this embodiment, the water flow distribution plate 707 is a conical cylinder with a cone angle of 130 ° to 160 °, and circular holes 7071 are uniformly distributed on the surface of the conical cylinder of the water flow distribution plate 707. The apertures of the circular holes 7071 on the water flow distribution plate 707 distributed on the tank 701 from bottom to top are gradually reduced. A horizontal bar 7072 is fixed in the circular hole 7071 on the water flow distribution plate 707 along the diameter, and a plurality of teeth 7073 are arranged on the horizontal bar 7072. Round hole 7071 and the inside horizontal bar 7072 and the tooth 7073 of round hole on the multilayer rivers distribution plate 707 through this embodiment can effectively cut the bubble of oxygen, and gas, water, biomembrane obtain abundant contact exchange, draw into turbulent state, have improved the transfer rate and the dynamic efficiency of oxygenating of oxygen, have promoted microbial metabolism, have strengthened the treatment effeciency of waste water.
When the whole equipment is operated for a period of time, a large amount of sludge can be deposited in the sedimentation tank 1, in order to facilitate cleaning, a partition plate 102 is arranged in the sedimentation tank 1, the height of the partition plate 102 is lower than that of the sedimentation tank 1, the partition plate 102 divides the sedimentation tank 1 into a first chamber 103 and a second chamber 104, the sewage inlet 6 is arranged on the side wall of the upper part of the first chamber 103, and the overflow port 105 is arranged on the side wall of the lower part of the second chamber 104. A sludge cleaning port 101 is formed in one side wall of the bottom of the first chamber 103, and the sludge is cleaned by opening the sludge cleaning port 101.
The integrated domestic sewage treatment device convenient for cleaning sludge of the embodiment works in the following specific processes:
domestic sewage is introduced into the first chamber 103 in the sedimentation tank 1 through the sewage inlet 6, sludge is firstly deposited at the bottom of the first chamber 103, upper clear water enters the second chamber 104 after passing through the top of the partition plate 102, upper clear water in the second chamber 104 enters the bioreactor 7 in the primary biological reaction tank 2 through the overflow port 105, the circular holes 7071 on the multi-level water flow distribution plate 707 of the bioreactor 7 in the primary biological reaction tank 2, the cross bars 7072 and the tooth sheets 7073 inside the circular holes can effectively cut oxygen bubbles, and microorganisms in gas, water and sewage are fully contacted and exchanged to form a turbulent flow state, so that the oxygen transfer rate and the oxygen charging power efficiency are improved, and the metabolism of the microorganisms is promoted,the treatment efficiency of the wastewater is enhanced, and the dissolved organic matters are absorbed by microbial cells and ammoniated and hydrolyzed to reduce the concentration of BOD5 in the wastewater; meanwhile, the aperture of the circular hole on the water flow distribution plate 707 distributed from bottom to top of the bioreactor 7 is gradually reduced, which can reduce the sludge in the sewage from flowing into the next-stage bioreactor 7 and the membrane bioreactor 401, thereby reducing the working pressure of the membrane bioreactor 401 and improving the purification efficiency of the membrane bioreactor 401; in addition, NH3A part of the-N is removed due to the synthesis of cells, so that the concentration of NH3-N in the sewage is reduced, the treated sewage enters a bioreactor 7 in a secondary biological reaction tank 3, and denitrifying bacteria in the bioreactor 7 in the secondary biological reaction tank 3 use organic matters in the sewage as carbon sources to bring a large amount of NO into the backflow mixed liquor3-N and NO2Reduction of-N to N2Released to the air, so that the BOD5 concentration is reduced, NO3A substantial decrease in N concentration; finally, the treated sewage enters a membrane bioreactor 401, and the sewage is further dephosphorized and denitrified by the membrane bioreactor 401, so that the deep purification of the domestic sewage is realized; however, after the whole equipment is operated for a period of time, a great deal of sludge is still accumulated in the bioreactors 7 in the primary biological reaction tank 2 and the secondary biological reaction tank 3, at this time, the electromagnetic valve 712 can be closed, then the high-pressure water pump is started to pump purified water into the flushing pipe 711 at the upper part of the bioreactor 7, then the purified water is sprayed into the tank 701 from top to bottom by the high-pressure spray head 715, the multi-layer water flow distribution plate 707 is flushed firstly, the sludge in the circular holes 7071 on the multi-layer water flow distribution plate 707 can be flushed down and finally flows to the bottom of the tank 701, then the sludge pump 8 is started to pump the sludge after the flushing water into the sedimentation tank 1, so that the bioreactor 7 is backwashed by using recovered purified water, the flushed sewage is returned to the sedimentation tank 1, and then the sludge cleaning port 101 periodically cleans the sludge, thereby realizing the recycling of the sewage, and energy is saved.
The technical solution of the present invention is not limited to the limitations of the above specific embodiments, and all technical modifications made according to the technical solution of the present invention fall within the protection scope of the present invention.

Claims (9)

1. The utility model provides an integration sewage treatment unit convenient to clearance mud, includes the box, its characterized in that: a sedimentation tank, a primary biological reaction tank, a secondary biological reaction tank, a membrane biological reaction tank and a device room which are sequentially communicated are arranged in the box body, a sewage inlet is formed in the upper part of one side of the sedimentation tank, biological reactors are arranged in the primary biological reaction tank and the secondary biological reaction tank, and a membrane biological reactor is arranged in the membrane biological reaction tank;
the bioreactor comprises a tank body, a feeding port is arranged at the top of the tank body, a discharging port is arranged at the bottom of the tank body, a motor is fixed at the top end of the tank body and is connected with a control cabinet, a stirring shaft is longitudinally arranged at the center of the tank body, the top end of the stirring shaft penetrates through the top end of the tank body and is axially and fixedly connected with the end part of an output shaft of the motor, a plurality of stirring blade layers are fixed on the stirring shaft from top to bottom, each stirring blade layer consists of two stirring blades which are symmetrically distributed, a water flow distribution plate is arranged above each stirring blade layer, the outer side wall of each water flow distribution plate is fixed on the inner side; the water inlet of the bioreactor is arranged on one side wall of the bottom of the tank body, a one-way valve is arranged in the water inlet of the bioreactor, the water outlet of the bioreactor is arranged on one side wall of the upper part of the tank body, the air inlet of the bioreactor is arranged on the other side wall of the bottom of the tank body, and an electromagnetic valve is arranged in the air inlet of the bioreactor; the top of the tank body is also provided with a flushing pipe, the tail end of the flushing pipe penetrates through the top of the tank body and extends into the tank body, the top of the flushing pipe is connected with a water outlet of a high-pressure water pump, a water inlet of the high-pressure water pump is communicated with a purified water outlet, the tail end of the flushing pipe is fixedly provided with an annular pipe, the annular pipe and a stirring shaft are concentrically arranged, and the lower end of the annular pipe is provided with a plurality of high-;
the upper part of the other side of the sedimentation tank is provided with an overflow port, the overflow port is connected to a water inlet of a bioreactor in the primary biological reaction tank through a pipeline, a water outlet of the bioreactor in the primary biological reaction tank is connected to a water inlet of a bioreactor in the secondary biological reaction tank through a pipeline, a water outlet of the bioreactor in the secondary biological reaction tank is connected to a water inlet of a membrane bioreactor through a pipeline, a water outlet of the membrane bioreactor is connected to a purified water outlet through a pipeline, and the purified water outlet is arranged on one side wall of the equipment room; the top of the equipment room is provided with a fan, and an air outlet of the fan is respectively connected with air inlets of the bioreactors in the primary biological reaction tank and the secondary biological reaction tank through pipelines; sludge pumps are installed at the discharge ports at the bottoms of the bioreactors in the primary biological reaction tank and the secondary biological reaction tank, the inlet of each sludge pump is connected with the discharge ports at the bottoms of the bioreactors in the primary biological reaction tank and the secondary biological reaction tank, and the outlet of each sludge pump is connected to a sewage inlet through a pipeline sludge pipe;
and a sludge cleaning port is arranged on one side of the sedimentation tank.
2. The integrated domestic sewage treatment apparatus convenient for sludge cleaning according to claim 1, wherein: and a control cabinet connected with the bioreactors, the fan, the electromagnetic valve, the high-pressure water pump and the sludge pump in the primary biological reaction tank and the secondary biological reaction tank is also arranged in the equipment room.
3. The integrated domestic sewage treatment apparatus convenient for sludge cleaning according to claim 3, wherein: the water flow distribution plate is in a conical cylinder shape, the cone angle is 130-160 degrees, and round holes are uniformly distributed on the surface of the conical cylinder of the water flow distribution plate.
4. The integrated domestic sewage treatment apparatus convenient for sludge cleaning according to claim 3, wherein: the diameter of the circular hole on the water flow distribution plate distributed on the tank body from bottom to top is gradually reduced.
5. The integrated domestic sewage treatment apparatus convenient for sludge cleaning according to claim 3 or 4, wherein: and a cross bar is fixed in the round hole on the water flow distribution plate along the diameter, and a plurality of tooth sheets are arranged on the cross bar.
6. The integrated domestic sewage treatment apparatus convenient for sludge cleaning according to claim 1, wherein: the membrane bioreactor is an MBR membrane bioreactor.
7. The integrated domestic sewage treatment apparatus convenient for sludge cleaning according to claim 1, wherein: the fan is a variable frequency fan.
8. The integrated domestic sewage treatment apparatus convenient for sludge cleaning according to claim 1, wherein: be equipped with the baffle in the sedimentation tank, the height that highly is less than the sedimentation tank of baffle, the baffle is divided into first cavity and second cavity in with the sedimentation tank, the sewage entry sets up on the lateral wall on first cavity upper portion, the overflow mouth sets up on the lateral wall of second cavity lower part.
9. The integrated domestic sewage treatment apparatus convenient for sludge cleaning according to claim 8, wherein: a sludge cleaning opening is formed in one side wall of the bottom of the first cavity.
CN202010800105.0A 2020-08-11 2020-08-11 Integrated domestic sewage treatment device convenient for cleaning sludge Withdrawn CN111977779A (en)

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CN202010800105.0A CN111977779A (en) 2020-08-11 2020-08-11 Integrated domestic sewage treatment device convenient for cleaning sludge

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Application Number Priority Date Filing Date Title
CN202010800105.0A CN111977779A (en) 2020-08-11 2020-08-11 Integrated domestic sewage treatment device convenient for cleaning sludge

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114873702A (en) * 2022-05-30 2022-08-09 广州绿茵环保科技(集团)有限公司 Slag treatment water circulation grading precipitation treatment device and use method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114873702A (en) * 2022-05-30 2022-08-09 广州绿茵环保科技(集团)有限公司 Slag treatment water circulation grading precipitation treatment device and use method thereof

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