CN108585197B - Village-to-home-level mud film coupling sewage treatment device and treatment method thereof - Google Patents
Village-to-home-level mud film coupling sewage treatment device and treatment method thereof Download PDFInfo
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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
- C02F3/30—Aerobic and anaerobic processes
- C02F3/301—Aerobic and anaerobic treatment in the same reactor
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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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
- C02F3/30—Aerobic and anaerobic processes
- C02F3/302—Nitrification and denitrification treatment
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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
- C02F3/30—Aerobic and anaerobic processes
- C02F3/308—Biological phosphorus removal
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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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/40—Liquid flow rate
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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
- C02F2301/00—General aspects of water treatment
- C02F2301/02—Fluid flow conditions
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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
- C02F2301/00—General aspects of water treatment
- C02F2301/04—Flow arrangements
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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
- C02F2303/00—Specific treatment goals
- C02F2303/04—Disinfection
Abstract
The invention discloses a village-union household-level sludge membrane coupling sewage treatment device and a treatment method thereof, wherein the village-union household-level sludge membrane coupling sewage treatment device comprises a water inlet pipe, a water distribution channel, a vortex flow anoxic/anaerobic sludge membrane coupling reaction zone, a spiral flow aerobic sludge membrane coupling reaction zone, an aerobic phosphorus absorption sludge membrane aggregation zone, an aeration system, a sludge-water separation filtration zone, a water outlet channel, a micro-power gas stripping external sludge discharge system, a micro-power gas stripping sludge membrane circulation system, a sludge resuspension and a biological membrane renew system; the micro-power gas stripping, vortex flow, turbine cycle reciprocating treatment, reoxygenation technology, mud film coupling technology and the like can greatly reduce the ton water cost and improve the denitrification and dephosphorization treatment effect, and the energy consumption is reduced by more than 85 percent compared with the conventional method, and the method has the characteristics of small occupied area and low energy consumption, and the treatment cost is as low as 0.1 yuan/ton water or below; the invention can be treated singly, in series, in parallel or in combination of series and parallel, and the effluent can stably reach the first-level A emission standard.
Description
Technical Field
The invention belongs to the technical field of rural sewage treatment, and particularly relates to a village-to-home-level mud film coupling sewage treatment device and a village-to-home-level mud film coupling sewage treatment method.
Background
With the acceleration of urban and rural overall steps and the comprehensive promotion of new rural construction, rural sewage treatment has made certain progress. However, the current rural domestic sewage treatment capacity still cannot meet the increasing sewage treatment requirements. In view of the scattered multi-living in rural areas of China, various terrains and large mountain areas. The rural domestic sewage treatment has the problems of large pipe network construction investment, inconvenient equipment installation, high operation and maintenance cost, low oxygen utilization rate, insignificant treatment effect and the like caused by the fact that most oxygen overflows from the water surface, and needs a sewage treatment device and a sewage treatment method for joint households, which have low energy consumption, high-efficiency denitrification and dephosphorization and are convenient to operate.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a village-to-home sludge-film coupling sewage treatment device and a village-to-home sludge-film coupling sewage treatment method, which have the advantages that the occupied area of the sewage treatment device and the sewage treatment method is reduced by 50 percent, the treatment cost is reduced to 0.1 yuan/ton of water or below, the unattended operation can be realized, and the operation and the maintenance are simple and convenient.
The aim of the invention can be achieved by the following technical scheme: the village-union household-level sludge membrane coupling sewage treatment device comprises a water inlet pipe, a water distribution channel, a vortex flow anoxic/anaerobic sludge membrane coupling reaction zone, a spiral flow aerobic sludge membrane coupling reaction zone, an aerobic phosphorus absorption sludge membrane aggregation zone, an aeration system, a sludge-water separation filtration zone, a water outlet channel, a micro-power gas stripping external sludge discharge system, a micro-power gas stripping sludge membrane circulation system, a sludge re-suspension and biological membrane re-updating system and a water outlet pipe; the bottom of the spiral flow aerobic mud film coupling reaction zone is provided with a bubble secondary cutter; the sludge resuspension and biomembrane renew system is positioned at the lower part of the vortex flow anoxic/anaerobic sludge membrane coupling reaction zone; the middle part of the spiral flow aerobic mud film coupling reaction zone is a cylinder or a straight cylinder, and the lower part is a gas collecting hood; the vortex flow anoxic/anaerobic sludge membrane coupling reaction zone and the sludge-water separation filtration zone are separated from the cylinder body or the connecting body of the straight cylinder body through two separation plates respectively; the aerobic phosphorus absorption mud film aggregation area and the aeration system are both positioned below the bubble secondary cutter; the aeration system is positioned below the gas collecting hood and close to the bottom side of the mud-water separation filtering area; a filtering interception layer is arranged at the upper part of the mud-water separation filtering area; and a beveling flow regulator is arranged on the upper cylinder wall of the vortex flow anoxic/anaerobic sludge membrane coupling reaction zone and the spiral flow aerobic sludge membrane coupling reaction zone.
The aeration system is arranged on one side.
The bubble secondary cutter separates the spiral flow aerobic sludge film coupling reaction zone from the aerobic phosphorus absorption sludge film aggregation zone and the aeration system respectively.
The vortex flow anoxic/anaerobic sludge membrane coupling reaction zone is filled with solid biomembrane carriers, biomembranes and activated sludge on the wall surface of the micro vortex, and the filling ratio of the biomembrane carriers is 10-70%.
The spiral flow aerobic sludge film coupling reaction zone is filled with a suspended biological film carrier, a biological film and activated sludge, and the filling ratio of the biological film carrier is 10% -70%.
The thickness of the filtering interception layer is 5 mm-40 mm.
The village-to-household-level sludge-membrane coupled sewage treatment device adopts a form of a single village-to-household-level sludge-membrane coupled sewage treatment device, a form of serial connection of a plurality of village-to-household-level sludge-membrane coupled sewage treatment devices, a parallel connection of a plurality of village-to-household-level sludge-membrane coupled sewage treatment devices or a form of serial-to-parallel connection of village-to-household-level sludge-membrane coupled sewage treatment devices to carry out combined group treatment according to different treatment capacity requirements so as to form village-to-household-level sludge-membrane coupled sewage treatment devices with different scales and forms.
A method for treating a village-union household-level mud film coupling sewage treatment device comprises the following steps:
(1) Sewage firstly enters a vortex flow anoxic/anaerobic sludge membrane coupling reaction zone through a water inlet pipe and a water distribution channel, is mixed with nitrified liquid sludge membrane mixed liquid after the flow of a beveling flow regulator, generates countless micro eddies through the action of micro vortex wall surfaces on a solid biological membrane carrier, so as to increase the medium exchange rate between sludge membrane microorganisms and pollutants, greatly improve the denitrification and denitrification phosphorus accumulating reaction effects, and the treated sewage enters a spiral flow aerobic sludge membrane coupling reaction zone;
(2) Countless small bubbles generated by the aeration system enter a spiral flow aerobic sludge membrane coupling reaction zone after being cut again by a bubble secondary cutter, high bubble point gas-liquid is generated by continuously colliding with a gas collecting cover, a cylinder body or a straight cylinder body, positive and negative pressures with different zone positions are formed, sewage and a sludge membrane in the spiral flow aerobic sludge membrane coupling reaction zone are automatically formed into turbine reciprocating circulation by hydraulic pushing, high-speed reciprocating mixing circulation treatment is carried out, bubble point oxygen which does not overflow the water surface is pressed into the water again by hydraulic circulation force for reoxygenation cyclic utilization, and the aerobic carbon removal, nitrification and phosphorus absorption reaction effects and the oxygen utilization rate are greatly improved; the sludge after the aerobic phosphorus absorption is partially gathered in an aerobic phosphorus absorption sludge film gathering area; the treated sludge membrane nitrifying liquid part enters a vortex flow anoxic/anaerobic sludge membrane coupling reaction zone through a beveling flow regulator, and the part enters the bottom of a sludge-water separation filtering zone;
(3) The treated sludge-membrane mixed liquor is subjected to sludge-water separation in a sludge-water separation filtering area, precipitated sludge is lifted by a micro-power gas stripping sludge-membrane circulating system, and sludge membrane trapped and deposited in the sludge-water separation filtering area is lifted to a spiral flow aerobic sludge membrane coupling reaction area together with the mixed liquor for turbine reciprocating treatment; filtering the supernatant liquid after precipitation through a filtering and retaining layer, and discharging filtered water reaching the standard after passing through a water outlet channel, a water outlet pipe and disinfection;
(4) Periodically discharging phosphorus-absorbing surplus sludge deposited at the bottom of an aerobic phosphorus-absorbing sludge film aggregation zone to the outside of the pond through the periodic gas stripping action of a micro-power gas stripping external sludge discharge system, so as to achieve the purpose of removing phosphorus, wherein the periodic action period is that the phosphorus-absorbing surplus sludge is started for 2-10 min every 4-12 h of operation;
(5) The purpose of sludge resuspension and periodic biofilm re-update is achieved through the periodic action of the sludge resuspension and biofilm re-update system on the vortex flow anoxic/anaerobic sludge film coupling reaction zone, and the periodic action period is 1-10 min after each operation for 2-48 h.
The invention has the beneficial effects that: the invention effectively integrates micro-power gas stripping technology, vortex flow reaction technology, turbine cycle reciprocating treatment, turbine reactor internal reciprocating oxygenation technology, bubble secondary cutter technology, high bubble point gas-liquid positive and negative pressure self-circulation technology, sludge re-suspension and biological membrane re-updating technology, dominant strain interception technology of different areas, beveling flow regulator technology, mud-water separation filtration technology and the like, does not need additional reflux, greatly reduces ton water cost and improves denitrification and dephosphorization treatment effect; compared with the conventional device technology, the aeration energy consumption is reduced by more than 85%, the occupied area is reduced by 50%, the treatment cost is reduced to 0.1 yuan/ton of water or below, unattended operation can be realized, the operation and maintenance are simple and convenient, the market blank of the household sewage treatment equipment is filled, and the single sewage treatment device, the serial connection of a plurality of sewage treatment devices and the parallel connection of a plurality of sewage treatment devices can be adopted for combined or group-type treatment so as to form reaction devices with different scales and different forms.
The invention can ensure that the effluent stably reaches the first-level A discharge standard.
Drawings
For a clearer description of the technical solutions of the present invention, reference will be made briefly to the accompanying drawings 1, which are required to be used in the embodiments, it being obvious that the accompanying drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained, without inventive effort, by a person skilled in the art, from these accompanying drawings:
FIG. 1 is a schematic diagram of a village-to-home sludge-membrane coupled sewage treatment device according to the present invention
The device comprises a 1-water inlet pipe, a 2-water distribution channel, a 3-spiral flow aerobic sludge membrane coupling reaction zone, a 4-vortex flow anoxic/anaerobic sludge membrane coupling reaction zone, a 5-aerobic phosphorus absorption sludge membrane aggregation zone, a 6-aeration system, a 7-sludge water separation filtration zone, an 8-water outlet channel, a 9-water outlet pipe, a 10-micro-power gas stripping external sludge discharge system, an 11-micro-power gas stripping sludge circulation system, a 12-sludge resuspension and biological membrane renew system, a 13-bubble secondary cutter, a 14-cylinder or straight cylinder, a 15-gas collecting cover, a 16-separation plate, a 17-filtration interception layer, an 18-beveling flow regulator, a 19-micro-vortex wall solid biological carrier and a 20-suspended biological carrier.
Detailed Description
The village-union household-level sludge membrane coupling sewage treatment device comprises a water inlet pipe 1, a water distribution channel 2, a vortex flow anoxic/anaerobic sludge membrane coupling reaction zone 4, a spiral flow aerobic sludge membrane coupling reaction zone 3, an aerobic phosphorus absorption sludge membrane aggregation zone 5, an aeration system 6, a sludge-water separation filtration zone 7, a water outlet channel 8, a water outlet pipe 9, a micro-power gas stripping external sludge discharge system 10, a micro-power gas stripping sludge membrane circulation system 11 and a sludge re-suspension and biological membrane re-updating system 12; the bottom of the spiral flow aerobic mud film coupling reaction zone 3 is provided with a bubble secondary cutter 13; the sludge re-suspension and biomembrane re-updating system 12 is positioned at the lower part of the vortex flow anoxic/anaerobic sludge membrane coupling reaction zone 4; the middle part of the spiral flow aerobic mud film coupling reaction zone 3 is a cylinder or a straight cylinder 14, and the lower part is a gas collecting hood 15; the vortex flow anoxic/anaerobic sludge membrane coupling reaction zone 4 and the sludge-water separation filtration zone 7 are separated from the cylinder or the connecting body of the straight cylinder 14 through two separation plates 16 respectively; the aerobic phosphorus absorption mud film aggregation area 5 and the aeration system 6 are both positioned below the bubble secondary cutter 13; the aeration system 6 is positioned below the gas-collecting hood 15 and is close to the bottom side of the mud-water separation filtering area 7; the upper part of the mud-water separation filtering area 7 is provided with a filtering interception layer 17; and a beveling flow regulator 18 is arranged on the upper cylinder wall between the vortex flow anoxic/anaerobic sludge membrane coupling reaction zone 4 and the spiral flow aerobic sludge membrane coupling reaction zone 3 and used for regulating the overflow rate and ensuring the system effect.
The aeration system 6 is arranged on one side.
The bubble secondary cutter 13 separates the spiral flow aerobic sludge film coupling reaction zone 3, the aerobic phosphorus absorption sludge film aggregation zone 5 and the aeration system 6, and simultaneously carries out secondary cutting on bubbles to be finer, thereby improving the utilization rate of oxygen.
The vortex flow anoxic/anaerobic sludge film coupling reaction zone 4 is filled with a solid biological film carrier 19 with a micro vortex wall surface, a biological film and activated sludge, and the filling ratio of the biological film carrier 19 is 10% -70%.
The spiral flow aerobic sludge membrane coupling reaction zone 3 is filled with a suspended biological membrane carrier 20, biological membranes and activated sludge, and the filling ratio of the biological membrane carrier 20 is 10% -70%.
The thickness of the filtration interception layer 17 is 5 mm-40 mm.
The village-connected household-level mud film coupling sewage treatment device can adopt a single reactor form, a plurality of reactors connected in series, a plurality of reactors connected in parallel and a series-parallel form to carry out combination or group treatment according to different treatment capacity requirements so as to form reaction devices with different scales and forms.
A method for treating a village-union household-level mud film coupling sewage treatment device comprises the following steps:
(1) Sewage firstly enters a vortex flow anoxic/anaerobic sludge membrane coupling reaction zone 4 through a water inlet pipe 1 and a water distribution channel 2, is mixed with nitrified liquid sludge membrane mixed liquid after the adjustment of the inclined flow regulator 18, generates countless micro eddies through the micro-vortex wall action on a solid biological carrier 19 so as to increase the medium exchange rate between sludge membrane microorganisms and pollutants, greatly improves the denitrification and denitrification phosphorus accumulating reaction effect, can improve the treatment efficiency by nearly 1 time, and the treated sewage enters a spiral flow aerobic sludge membrane coupling reaction zone 3;
(2) Countless small bubbles generated by the aeration system 6 are cut into more small bubbles again through the bubble secondary cutter 13 and then enter the spiral flow aerobic sludge film coupling reaction zone 3, high bubble point gas-liquid is generated by continuously colliding with the gas collecting hood, the cylinder or the straight cylinder and collecting, pressurizing is released instantaneously, positive and negative pressures with different zone positions are formed, sewage and sludge films in the spiral flow aerobic sludge film coupling reaction zone 3 are automatically formed into turbine reciprocating circulation by hydraulic force, high-speed reciprocating mixing circulation treatment is carried out, bubble point oxygen which does not overflow the water surface and is not utilized is pressed into the water again by hydraulic force for reoxygenation cyclic utilization, the aerobic carbon removal, nitrification and phosphorus absorption reaction effects and the oxygen utilization rate are greatly improved, the energy consumption is reduced by 85% or more, and the defects of the traditional technology are overcome; the sludge after the aerobic phosphorus absorption is partially gathered in an aerobic phosphorus absorption sludge film gathering area 5; the treated sludge membrane nitrifying liquid enters the vortex flow anoxic/anaerobic sludge membrane coupling reaction zone 4 through the beveling flow regulator 18, and part enters the bottom of the sludge-water separation filtration zone 7;
(3) The treated sludge-membrane mixed liquor is subjected to sludge-water separation firstly by a sludge-water separation filtering zone 7, precipitated sludge is lifted by a micro-power gas stripping sludge-membrane circulating system 10, and sludge which is trapped by the sludge-water separation filtering zone 7 and deposited is lifted to a spiral flow aerobic sludge-membrane coupling reaction zone 3 together with the mixed liquor for turbine reciprocating treatment; filtering the supernatant liquid after precipitation again through a filtering and intercepting layer 17, and discharging filtered water reaching the standard after disinfection through a water outlet channel 8 and a water outlet pipe 9;
(4) The phosphorus absorption surplus sludge deposited at the bottom of the aerobic phosphorus absorption sludge film gathering area is periodically discharged to the outside of the pond through the periodic gas stripping action of the micro-power gas stripping external sludge discharging system 10, so as to achieve the purpose of removing phosphorus, wherein the periodic action period is that the phosphorus absorption surplus sludge is started for 2-10 min every 4-12 h of operation;
(5) The purpose of sludge resuspension and periodic biofilm re-renewal is achieved through the periodic action of the sludge resuspension and biofilm re-renewal system 12 on the vortex flow anoxic/anaerobic sludge film coupling reaction zone 4, and the periodic action period is started for 1 min-10 min every 2-48 h of operation.
The invention effectively integrates micro-power gas stripping technology, vortex flow reaction technology, turbine cycle reciprocating treatment, turbine reactor internal reciprocating oxygenation technology, bubble secondary cutter technology, high bubble point gas-liquid positive and negative pressure self-circulation technology, sludge re-suspension and biological membrane re-updating technology, dominant strain interception technology of different areas, beveling flow regulator technology, mud-water separation filtration technology and the like, does not need additional reflux, greatly reduces ton water cost, and improves denitrification and dephosphorization treatment effect; compared with the conventional device technology, the aeration energy consumption is reduced by more than 85%, the occupied area is reduced by 50%, the treatment cost is reduced to 0.1 yuan/ton of water or below, unattended operation can be realized, the operation and maintenance are simple and convenient, the market blank of the household sewage treatment equipment is filled, and the single reactor form, the serial connection form of a plurality of reactors and the parallel connection form of a plurality of reactors can be adopted for combined or group-type treatment so as to form reaction devices with different scales and forms, the single product can be produced in large scale, the device has the characteristics of substantial innovation and progress, the market competitiveness is huge, and the effluent can stably reach the first-level A emission standard.
The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement the same according to the content of the present invention, and are not intended to limit the scope of the present invention. All equivalent changes or modifications made in accordance with the spirit of the present invention should be covered by the scope of the invention.
Claims (5)
1. A treatment method of a village-union household-level mud film coupling sewage treatment device is characterized by comprising the following steps of: the device comprises a water inlet pipe, a water distribution channel, a vortex flow anoxic/anaerobic sludge membrane coupling reaction zone, a spiral flow aerobic sludge membrane coupling reaction zone, an aerobic phosphorus absorption sludge membrane aggregation zone, an aeration system, a sludge-water separation filtration zone, a water outlet channel, a micro-power gas stripping external sludge discharge system, a micro-power gas stripping sludge membrane circulation system, a sludge re-suspension and biological membrane re-updating system and a water outlet pipe; the bottom of the spiral flow aerobic mud film coupling reaction zone is provided with a bubble secondary cutter; the sludge resuspension and biomembrane renew system is positioned at the lower part of the vortex flow anoxic/anaerobic sludge membrane coupling reaction zone; the middle part of the spiral flow aerobic mud film coupling reaction zone is a cylinder or a straight cylinder, and the lower part is a gas collecting hood; the vortex flow anoxic/anaerobic sludge membrane coupling reaction zone and the sludge-water separation filtration zone are separated from the cylinder body or the connecting body of the straight cylinder body through two separation plates respectively; the aerobic phosphorus absorption mud film aggregation area and the aeration system are both positioned below the bubble secondary cutter; the aeration system is positioned below the gas collecting hood and close to the bottom side of the mud-water separation filtering area; a filtering interception layer is arranged at the upper part of the mud-water separation filtering area; the upper cylinder wall of the vortex flow anoxic/anaerobic sludge membrane coupling reaction zone and the spiral flow aerobic sludge membrane coupling reaction zone is provided with an inclined flow regulator;
the vortex flow anoxic/anaerobic sludge film coupling reaction zone is filled with a solid biological film carrier, a biological film and activated sludge on the micro vortex wall surface, and the filling ratio of the biological film carrier is 10% -70%;
the spiral flow aerobic sludge film coupling reaction zone is filled with a suspended biological film carrier, a biological film and activated sludge, and the filling ratio of the biological film carrier is 10% -70%;
the processing method comprises the following steps:
(1) Sewage firstly enters a vortex flow anoxic/anaerobic sludge membrane coupling reaction zone through a water inlet pipe and a water distribution channel, is mixed with nitrified liquid sludge membrane mixed liquid after the flow of a beveling flow regulator, generates countless micro eddies through the action of micro vortex wall surfaces on a solid biological membrane carrier, so as to increase the medium exchange rate between sludge membrane microorganisms and pollutants, greatly improve the denitrification and denitrification phosphorus accumulating reaction effects, and the treated sewage enters a spiral flow aerobic sludge membrane coupling reaction zone;
(2) Countless small bubbles generated by the aeration system enter a spiral flow aerobic sludge membrane coupling reaction zone after being cut again by a bubble secondary cutter, high bubble point gas-liquid is generated by continuously colliding with a gas collecting cover, a cylinder body or a straight cylinder body, positive and negative pressures with different zone positions are formed, sewage and a sludge membrane in the spiral flow aerobic sludge membrane coupling reaction zone are automatically formed into turbine reciprocating circulation by hydraulic pushing, high-speed reciprocating mixing circulation treatment is carried out, bubble point oxygen which does not overflow the water surface is pressed into the water again by hydraulic circulation force for reoxygenation cyclic utilization, and the aerobic carbon removal, nitrification and phosphorus absorption reaction effects and the oxygen utilization rate are greatly improved; the sludge after the aerobic phosphorus absorption is partially gathered in an aerobic phosphorus absorption sludge film gathering area; the treated sludge membrane nitrifying liquid part enters a vortex flow anoxic/anaerobic sludge membrane coupling reaction zone through a beveling flow regulator, and the part enters the bottom of a sludge-water separation filtering zone;
(3) The treated sludge-membrane mixed liquor is subjected to sludge-water separation in a sludge-water separation filtering area, precipitated sludge is lifted by a micro-power gas stripping sludge-membrane circulating system, and sludge membrane trapped and deposited in the sludge-water separation filtering area is lifted to a spiral flow aerobic sludge membrane coupling reaction area together with the mixed liquor for turbine reciprocating treatment; filtering the supernatant liquid after precipitation through a filtering and retaining layer, and discharging filtered water reaching the standard after passing through a water outlet channel, a water outlet pipe and disinfection;
(4) Periodically discharging phosphorus-absorbing surplus sludge deposited at the bottom of an aerobic phosphorus-absorbing sludge film aggregation zone to the outside of the pond through the periodic gas stripping action of a micro-power gas stripping external sludge discharge system, so as to achieve the purpose of removing phosphorus, wherein the periodic action period is that the phosphorus-absorbing surplus sludge is started for 2-10 min every 4-12 h of operation;
(5) The purposes of sludge resuspension and periodic biofilm re-updating are achieved through the periodic action of the sludge re-suspension and biofilm re-updating system on the vortex flow anoxic/anaerobic sludge film coupling reaction zone, and the periodic action period is 1 min-10 min after each operation for 2-48 h.
2. The method for treating the village-union-level sludge-membrane-coupled sewage treatment device according to claim 1, wherein the method comprises the following steps of: the aeration system is arranged on one side.
3. The method for treating the village-union-level sludge-membrane-coupled sewage treatment device according to claim 1, wherein the method comprises the following steps of: the bubble secondary cutter separates the spiral flow aerobic sludge film coupling reaction zone from the aerobic phosphorus absorption sludge film aggregation zone and the aeration system respectively.
4. The method for treating the village-union-level sludge-membrane-coupled sewage treatment device according to claim 1, wherein the method comprises the following steps of: the thickness of the filtering interception layer is 5 mm-40 mm.
5. The method for treating the village-union-level sludge-membrane-coupled sewage treatment device according to claim 1, wherein the method comprises the following steps of: the village-to-home grade sludge film coupling sewage treatment device adopts a form of a single village-to-home grade sludge film coupling sewage treatment device, a form of serial connection of a plurality of village-to-home grade sludge film coupling sewage treatment device reactors, a form of parallel connection of a plurality of village-to-home grade sludge film coupling sewage treatment device reactors, or a form of serial-to-parallel combination group of village-to-home grade sludge film coupling sewage treatment devices according to different treatment capacity requirements, so as to form village-to-home grade sludge film coupling sewage treatment devices of different scales.
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| CN201198460Y (en) * | 2008-03-07 | 2009-02-25 | 宁波德安生态环保工程有限公司 | Biological reaction tank for treating sewage |
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