CN205115214U - Distributed rural domestic sewage integrated process device of modularization MBR - Google Patents

Abstract

The utility model relates to a modularized MBR decentralized rural domestic sewage integrated treatment device. The treatment device adopts an integrated purification tank structure of an MBR membrane bioreactor and anoxic pool, and sequentially includes a sediment pool, a regulating pool, Integrated purification tank and clear water tank, the water level of each tank is controlled by a float level device and a solenoid valve, the sewage enters the sediment tank, and the sewage after sedimentation in the sediment tank flows into the regulating tank by itself, and after being homogenized and uniform in the regulating tank, the pump Enter the anoxic pool of the integrated purification tank, and then enter the MBR membrane pool. The MBR membrane pool is connected with the blower as an aeration tank. Perform blower aeration and flush the membrane modules of the MBR membrane bioreactor to reduce membrane fouling; the mixed solution after aeration is extracted and returned to the anoxic tank through the air stripping tube, and the biochemical reaction effluent is separated by the membrane and then absorbed by the self-priming The pump is pumped into the clear water tank, and the sludge is sent to the sediment tank through the remaining sludge discharge pipe.

Description

Modular MBR decentralized rural domestic sewage integrated treatment device

technical field

The utility model relates to a modular MBR decentralized rural domestic sewage integrated treatment device, which is suitable for small-scale decentralized rural domestic sewage treatment, residential areas or resorts with reclaimed water reuse requirements, or domestic sewage treatment in ecologically sensitive areas.

Background technique

In the prior art, some apply drawer-type membrane technology to rural domestic sewage treatment, some use biological filter beds in purification tanks to achieve efficient treatment of domestic sewage, and some use plug-flow two-stage anaerobic filter beds and The fully mixed-flow aerobic biofilm integrated technology is used to treat domestic sewage in the purification tank, and a new type of integrated reactor has been developed for the denitrification treatment of rural domestic sewage.

MBR sewage treatment technology is a new technology combining biological treatment technology and membrane separation technology. It is a common way of modern sewage treatment. Sedimentation tanks can efficiently separate solids and liquids to obtain reusable and stable reclaimed water. Scope of application: residential quarters, office buildings, shopping malls, hotels, restaurants, institutions, schools, troops, factories and other domestic sewage and similar Industrial organic wastewater, etc.

The A/O biological phosphorus removal process is a sewage biological treatment system composed of anaerobic and aerobic two-part reactions. After the sewage enters the anaerobic tank, it is mixed with the return sludge. During this process, the phosphorus accumulating bacteria in the activated sludge absorb a large amount of BOD in the sewage and release the phosphorus in the sludge into the mixed solution in the form of orthophosphate. After the mixed solution enters the aerobic tank, the organic matter is oxidized and decomposed, and at the same time, the phosphorus-accumulating bacteria absorb a large amount of orthophosphate in the mixed solution. Since the phosphorus-accumulating bacteria absorb more phosphorus under aerobic conditions than they release under anaerobic conditions, the purpose of phosphorus removal is achieved through the alternating action of "anaerobic-aerobic" and the separation of sludge in the secondary sedimentation tank. In general, the removal rate of TP can reach more than 85%.

In addition, there are literature reports that Qingdao Liuting International Airport sewage treatment station adopts the combined process of A/O method and MBR, the removal rate of COD and ammonia nitrogen is stable, and the operating cost is 1.90 yuan per ton of water. Based on the benefit analysis of urban sewage treatment and rural domestic sewage removal of COD _Cr , BOD ₅ and SS, the literature compares and analyzes the treatment effect and operating cost of urban sewage treatment plants at the same time.

For example: Patent No.: 201420296372.9 relates to the field of sewage treatment and provides a decentralized modular domestic sewage treatment device, including biological treatment modules, filtration modules, equipment pipeline modules and control modules; the biological treatment modules are integrated Sewage treatment ponds, including contact oxidation ponds, inclined tube sedimentation ponds, intermediate pools and disinfection ponds; the equipment pipeline modules include hair collectors, water pumps, fans and other equipment; domestic sewage enters the contact oxidation ponds through the hair collectors, and after contacting After being treated in the oxidation tank, it enters the inclined tube sedimentation tank, after being treated in the inclined tube sedimentation tank, it enters the intermediate pool, after being buffered by the intermediate pool, it enters the filtration module, and after being filtered by the filter tank, it enters the disinfection pool for disinfection. The decentralized modular domestic sewage treatment device has high product integration, modular design, convenient and quick on-site installation, small footprint, stable operation and low cost, high degree of self-control, simple operation, convenient maintenance, good and stable effluent quality , It can be directly reused for toilet flushing and greening.

Patent application number: 201310000914.3 relates to an aerobic flow separation and magnetic flocculation integrated sewage treatment device and method, belonging to the field of sewage treatment. The sewage treatment device consists of an inlet tank, an aerobic tank, a mixing tank, a flocculation tank, a sedimentation tank, an online control device, and a magnetic separator. This technology uses aerobic flow biological treatment technology combined with magnetic flocculation treatment technology to realize the organic combination of short-range nitrification, synchronous nitrification and denitrification and magnetic separation technology of sewage continuous flow reactor, which can effectively realize the denitrification and phosphorus removal of domestic sewage and reduce the target for organic matter content. In practical application, this technology has the advantages of energy saving, small footprint, good water quality and low treatment cost.

Utility model content

The purpose of the utility model is to provide a modularized MBR decentralized rural domestic sewage integrated treatment device, and the effluent can stably meet the discharge requirements above the first level of the "Pollutant Discharge Standards for Urban Sewage Treatment Plants" (GB18918-2002).

The purpose of the utility model is realized by the following scheme: the modularized MBR decentralized rural domestic sewage integrated treatment device adopts an MBR membrane bioreactor, and at least includes a sediment pool, a regulating pool, an MBR membrane pool provided with an MBR membrane bioreactor, an anaerobic pools and clear water pools, of which:

The treatment device adopts the structure of an integrated purification tank with the MBR membrane bioreactor and the anoxic tank, and includes a sediment tank, a regulating tank, an integrated purification tank and a clear water tank in sequence, and the water level of each pool is controlled by a float level device and a clear water tank. Controlled by the solenoid valve, the sewage enters the sedimentation tank, and the sewage after sedimentation in the sedimentation tank flows into the regulating tank by itself. The MBR membrane tank is connected with the blower as an aeration tank, and the feeding port for phosphorus removal agent is set in the MBR membrane tank, and the blower blows and aerates the sewage in the MBR membrane tank and flushes the membrane components of the MBR membrane bioreactor to Reduce membrane pollution; the mixed liquid after aeration is extracted and returned to the anoxic tank through the air lift tube, the biochemical reaction effluent is pumped into the clear water tank by the self-priming pump after membrane separation, and the sludge is sent to the sediment tank through the remaining sludge sludge discharge pipe .

The utility model adopts a sewage advanced treatment device combining A/O-MBR+chemical phosphorus removal. MBR membrane modules are installed in the aerobic pool of the A/O system. The concentration of activated sludge in the biochemical pool is high to achieve efficient denitrification and organic matter removal effects. At the same time, chemically enhanced phosphorus removal is used to ensure that the effluent is stable and meets the national first-level discharge standards. .

On the basis of the above scheme, the integrated septic tank adopts an underground structure, wherein,

The dissolved oxygen in the MBR membrane pool is controlled at 2-4mg/L;

The dissolved oxygen in the anoxic pool is controlled at less than 0.5mg/L;

Aeration tank sludge concentration: 3000mg/L～6000mg/L;

The operation mode of the self-priming pump is an intermittent operation mode of on and off, such as: control to open for 8 minutes and stop for 2 minutes, so as to prevent membrane filament clogging when the self-priming pump continuously discharges water.

On the basis of the above scheme, the tank body is used as the shell of the integrated purification tank, an anoxic pool is set on one side, an MBR membrane pool is set on the other side, and a partition is provided between the anoxic pool and the MBR membrane pool And the water hole, the anoxic tank is provided with a water inlet pipe; the MBR membrane tank is provided with a membrane tank outlet pipe, which is connected with the sludge pipe and the air pipe.

In the integrated purification tank, a manhole is provided on the tank body of the MBR membrane tank for setting a membrane rail frame for fixing the membrane modules.

A pipe network system is set in the integrated septic tank, including:

In the MBR membrane tank, the air pipe extending into the sludge pipe of the membrane tank is connected to the remaining sludge air pipe connected to the fan outside the tank through the flange to form the remaining sludge air pipe system;

The sludge pipe in the MBR membrane tank is connected to the sediment tank to form the excess sludge discharge system;

The return pipe extending into the MBR membrane tank, and the return pipe from the fan to the tank outside the tank form the internal return air pipe system;

There is an internal return water pipe system from the MBR membrane pool to the anoxic pool.

On the basis of the above scheme, the described MBR membrane tank, each solenoid valve, and blower are controlled by automatic monitoring equipment, and the described automatic monitoring equipment includes at least a processor, a data acquisition module, a display module and a monitoring module, and the data acquisition module collects each The water level of the pool, the instantaneous flow value and cumulative flow value of the connecting pipes of each pool, the power consumption, the negative pressure value on the outlet pipe of the membrane pool, the data acquisition module will input the collected data into the computer processor, and complete the data comparison in the processor After the calculation and calculation, the MBR membrane tank, each electromagnetic valve and blower are monitored.

In order to realize the online centralized management mode, on the basis of the above scheme, the automatic monitoring equipment has a remote control system interface, and is connected with the rural domestic sewage treatment comprehensive monitoring center and the remote monitoring sub-center to realize remote monitoring and comprehensive integration of rural overall sewage. governance. Unattended sewage treatment stations can be realized, and online supervision by relevant government departments can be realized to ensure that the environmental and social benefit goals of the project are effectively implemented.

The utility model provides a modularized MBR decentralized rural domestic sewage integrated treatment method of the above-mentioned device. The process is as follows: firstly, the sewage enters the sediment pool, and larger particulate matter and some other pollutants in the sewage are removed in the sediment pool, and then the sewage is automatically It flows into the adjustment tank. After the sewage is homogenized and evenly distributed in the adjustment tank, it is lifted by the water pump and first enters the anoxic tank, and then enters the MBR membrane tank. In the MBR membrane tank, it is aerated by blasting. Reduce membrane fouling, and at the same time, aerate the mixed solution added with phosphorus removal agent, and the mixed solution is returned to the anoxic tank through air stripping. After the biochemical reaction, the effluent water is separated by the membrane and sucked by the self-priming pump, and the effluent is sent to the clean water tank or direct discharge.

The indicators of the water inlet and the clear water pool of the utility model mainly refer to: COD, BOD, ammonia nitrogen, total nitrogen, total phosphorus, SS, Escherichia coli.

The utility model has the advantages of:

Modularization and complete sets of equipment. The equipment is modular design, which can be assembled and combined according to the actual situation of the user to meet different processing requirements; the complete set of equipment is produced and processed in the factory, the quality is controllable, and the on-site construction period is effectively shortened;

The integrated purification tank adopts the buried type, which has little impact on the odor and noise of the surrounding environment;

Strong impact resistance. It has good adaptability to water volume and water quality fluctuations. Through the different operation modes set by the system, the operation mode of the equipment can be adjusted in time according to the fluctuation of influent water quality and water volume, so as to ensure the normal operation of the treatment station and stable water output, while greatly saving Operating energy consumption, reducing operating costs.

Small footprint. The equipment is fully buried, and the above ground is only the control room, which does not affect the landscape and greening, and the occupied area is less than 1m ² /ton of water.

High degree of automation, simple operation and maintenance. The equipment realizes fully automated operation, and the processing station is unattended. Under normal circumstances, the on-site equipment maintenance is only required every 3 months; the unique drawer-type MBR film is used, which is flexible and light, very easy to install and disassemble, and can be concentrated and specialized after pollution cleaning.

Intelligent remote monitoring. Through the data acquisition and monitoring system (SCADA), the remote unmanned on-site operation status is automatically monitored, and the central management room and customer offices are supervised through the Internet, and all sewage treatment stations are centrally operated and managed to realize the realization of enterprises, governments and Real-time online monitoring of users.

Description of drawings

Accompanying drawing 1 structural block diagram of the utility model;

Accompanying drawing 2 is the top view of the integrated purification tank of the utility model;

Accompanying drawing 3 is 1-1 sectional view of Fig. 2;

Accompanying drawing 4 is 2-2 sectional view of Fig. 2;

Accompanying drawing 5 is the 3-3 sectional view of Fig. 2;

Accompanying drawing 6 automatic monitoring equipment block diagrams;

Accompanying drawing 7 sewage treatment station automatic operation block diagram;

Accompanying drawing 8 is the flowchart of the utility model modularized MBR decentralized rural domestic sewage integrated treatment method;

Attached Figure 9 is a frame diagram of the comprehensive monitoring system for rural sewage treatment;

Accompanying drawing 10 specific embodiment equipment flowchart;

Explanation of symbols in the figure:

1, 1' - sedimentation tank; 2, 2' - regulating tank

3, 3'——integrated purification tank;

31, 31' - anoxic pool; 32, 32' - MBR membrane pool;

33—feeding part; 34—baffle;

35——water hole;

4, 4'—clear water pool;

5—dosing tube;

6——blower; 61——blower one; 62——blower two;

7—air pipe; 8—sludge pipe;

9 - Sewage pipe.

detailed description

Example 1

As shown in the structural block diagram of the utility model in accompanying drawing 1, the utility model modular MBR decentralized rural domestic sewage integrated treatment device adopts an MBR membrane bioreactor, including a sedimentation tank 1, a regulating tank 2, and an MBR membrane bioreactor. MBR membrane pond 32, anoxic pond 31 and clear water pond 4, wherein: described treatment device will be provided with the MBR membrane pond 32 of MBR membrane bioreactor and the anoxic pond 31 adopts the structure of integrated purification tank 3, sequentially Including sedimentation tank 1, regulating tank 2, integrated purification tank 3 and clear water tank 4, the water level of each tank is controlled by float level device and solenoid valve, the sewage enters the sedimentation tank 1, and the sewage after sedimentation in the sedimentation tank 1 flows into the regulating tank by itself Pond 2, after regulating homogeneous, uniform quantity in pond 2, pump into the anoxic pool 31 of integrated purification tank 3, then enter MBR membrane pool 32, described MBR membrane pool 32 is communicated with air blower as aeration tank, The MBR membrane pool 32 is provided with a feeding port for putting in phosphorus removal agent, which is communicated with the feeding part 33 through the dosing pipe 5, and the blower 6 blows and aerates the sewage in the MBR membrane pool 32 through the air pipe 7 and has a biological reaction on the MBR membrane. The membrane module of the device is washed; the mixed liquid after aeration is extracted and returned to the anoxic pool 31 through the air stripping tube, the biochemical reaction effluent is pumped into the clear water pool 4 by the self-priming pump after being separated by the membrane, and the sludge is discharged through the air lift The sludge pipe 8 to the sediment tank 1.

As shown in accompanying drawing 2, the installation diagram of the integrated purification tank of the utility model, accompanying drawing 3 is a sectional view of 1-1 of FIG. 2 , accompanying drawing 4 is a sectional view of 2-2 of FIG. As shown, the integrated purification tank adopts a buried structure, and a partition plate 34 and a water hole 35 are arranged between the anoxic pool 31 and the MBR membrane pool 32, and a water inlet pipe is provided in the anoxic pool; the MBR membrane pool 32 The outlet pipe of the membrane pool is set, and the MBR membrane pool 32 communicates with the sludge pipe 8 and the air pipe 7 . The equipment treatment specifications are aimed at the characteristics of typical rural sewage water volume, which are: 5m ³ /d, 10m ³ /d, 15m ³ /d, 100m ³ /d, etc., to achieve product serialization, of which:

The dissolved oxygen in the MBR membrane pool is controlled at 2-4mg/L;

The dissolved oxygen in the anoxic pool is controlled below 0.5mg/L;

Aeration tank sludge concentration: 3000mg/L～6000mg/L;

The operation mode of the self-priming pump is an intermittent operation mode of on and off.

In the MBR membrane tank 32, two manholes are used to set the membrane rail frame for fixing the membrane modules.

A pipe network system is set in the integrated septic tank, including:

In the MBR membrane tank, the air pipe extending into the sludge pipe of the membrane tank is connected to the remaining sludge air pipe connected to the fan outside the tank through the flange to form the remaining sludge air pipe system;

The sludge pipe in the MBR membrane tank is connected to the sediment tank to form the excess sludge discharge system;

The return pipe extending into the membrane tank, and the return pipe from the fan to the tank outside the tank constitute the internal return air pipe system;

From the MBR membrane tank 32 to the anoxic tank 31, an internal return water pipe system is provided.

As shown in the block diagram of the automatic monitoring equipment in Figure 6, the liquid level, solenoid valve, blower, and self-priming pump of each pool are controlled by the on-site PLC station, and the comprehensive monitoring center for rural sewage treatment includes a display screen, a project manager, a WEB server, and a data server , communication server mobile phone users can receive text messages or directly query information through the communication server, and each server transmits the information of each on-site PLC station + GPRS communication controller + anti-theft equipment and the operation command information of the engineer manager to the user and the government management department through the router , operation enterprises and other end customers, the data acquisition module collects the water level of each pool, the instantaneous flow value and cumulative flow value between the connecting pipes of each pool, power consumption, the negative pressure value on the outlet pipe of the membrane pool, the water level in the regulating pool and the clear water pool index value. The embodiment of the utility model adopts the PLC control system, and the operation signals and fault signals of each equipment are sent to the PLC system. When the equipment fails, it will alarm and start the backup equipment. After the data comparison and calculation are completed in the processor, the engineer manager passes through the router and Each on-site PLC station adopts CDMA and/or GPRS communication.

As shown in the automatic operation block diagram of the sewage treatment station in Figure 7, the automatic monitoring equipment has a remote control system interface and is connected to the integrated monitoring center for rural domestic sewage treatment and the remote monitoring sub-center. In the system, the logic block diagram shown in Figure 7 is used to realize data collection and automatic operation of sewage treatment stations. The liquid level of the MBR membrane pool, the liquid level of the regulating pool and the liquid level of the water collection well (optional) are realized according to the liquid level information of each pool to monitor the corresponding equipment and realize online centralized management. On the one hand, the sewage treatment station can be unattended, At the same time, online supervision by relevant government departments can be realized to ensure that the environmental and social benefits of the project are effectively implemented.

Accompanying drawing 8 is the flow chart of the utility model modularized MBR decentralized rural domestic sewage integrated treatment method: the sewage first enters the sedimentation tank 1, removes larger particulate matter and some other pollutants in the sewage in the sedimentation tank 1, and then the sewage is automatically It flows into the regulating tank 2, and after being homogenized in the regulating tank 2, it is lifted by a water pump and first enters the anoxic tank in the integrated purification tank 3, and then enters the MBR membrane tank, where it is aerated by blasting. On the one hand, the membrane module is flushed to reduce membrane fouling, and at the same time, the mixed solution added with phosphorus removal agent is aerated, and the mixed solution is returned to the anoxic tank through air lift. After the biochemical reaction, the water is discharged, and after membrane separation, it passes through the self-priming pump. Suction, the water is discharged to the clear water pool 4 or directly discharged. The sludge is sent to the sedimentation tank through the air lift sludge discharge pipe, and the sludge in the sedimentation tank is regularly sucked and transported by a dung truck.

Figure 9 is a frame diagram of the comprehensive monitoring system for rural sewage treatment. It is a centralized online management system developed and designed for the operation and management requirements of rural life processing stations. Its specific functions include: site distribution query, real-time system monitoring, alarm management, data query, operation report query and authority management, etc. Through this online management system, you can quickly locate the site and query the basic information of the site through the system navigation bar; display the real-time data of all sites through the real-time data list; realize real-time and historical fault query through the real-time and historical alarm list; Data query can realize the query of daily operation data, monthly operation data and annual operation data; through the operation report, it can realize the query of four types of reports: equipment maintenance records, sewage water quality inspection records, sludge disposal records, and chemical management records; authority management Different authority can be granted to system terminal management personnel, on-site operation management personnel, supervision departments at all levels, and construction parties of sewage treatment stations.

The utility model collects the water quality indexes of the inlet water of the regulating pool and the clear water pool, and each index respectively refers to: COD, BOD, ammonia nitrogen, total nitrogen, total phosphorus, SS, Escherichia coli.

Example 2

Accompanying drawing 10 is the flow chart of the equipment of the specific embodiment, the daily processing capacity is 25m ³ /d, and the key equipment and equipment parameters are:

Integrated purification tank Φ2000×(2800+400×2) buried type;

Adjusting pool lift pump 2 sets Q=8.0m ³ /h, H=7m, N=0.18kW, 1 for use and 1 for standby;

Membrane tank self-priming pump 2 sets Q=1.5m ³ /h, H=20m, N=0.37kW, 1 for use and 1 for standby;

2 sets of blowers Q=0.225m ³ /min, speed=430rpm, N=0.37kW, blower 1 61 and blower 2 62, one for use and one for standby;

Membrane module 1 group ECONITYCF–C22S, membrane frame 605W×784L×1,120H;

The sewage enters the sedimentation tank 1' from the De300 inlet pipe, removes larger particulate matter and some other pollutants in the sewage in the sedimentation tank 1', and then the sewage flows into the adjustment tank 2', where the sewage is homogenized After the quality is uniform, it is lifted by the water pump and first enters the anoxic pool 31' in the integrated purification tank 3 through the De32 pipeline, and then enters the MBR membrane pool 32', and is aerated by blast in the MBR membrane pool 32'. Flush the membrane module to reduce membrane fouling, and at the same time, aerate the mixed solution added with phosphorus removal agent, and the mixed solution is returned to the anoxic pool 31' through the De50 internal return pipe through air lift, and the water is discharged after the biochemical reaction, and the discharged water passes through the membrane After separation, it is sucked to the clean water well 4' by a self-priming pump. At the same time, the sludge in the MBR membrane tank 32' is discharged to the sediment tank 1' through the De50 residual sludge pipe.

According to the requirements of different treatment effluent quality, the system can add dephosphorization agent in the MBR membrane tank, combine the characteristics of membrane modules, and optimize the combination of chemical dephosphorization and membrane separation principle, which can not only strengthen the dephosphorization effect, but also be different from traditional chemical dephosphorization. Compared with phosphorus, it can greatly reduce the dosage of chemical agents, reduce operating costs and sludge production.

By adopting the design scheme of this embodiment, the effluent can stably meet the discharge requirements above Class I of the Discharge Standard of Pollutants for Urban Sewage Treatment Plants (GB18918-2002).

Technical features and innovations:

1. The modular MBR rural domestic sewage treatment device adopts an integrated purification tank, and the equipment is produced in a factory as a whole, without leakage, easy to install, short construction period, and the effluent can stably meet the "Pollutant Discharge Standards for Urban Sewage Treatment Plants" (GB18918- 2002) emission requirements above level one;

2. The sewage treatment system has efficient and stable denitrification and phosphorus removal effects, and can stably meet the discharge requirements of GB18918-2002 Class I or above according to the requirements of the discharged water body;

3. The system has a high pollutant removal rate, CODcr removal rate ≥ 90%; ammonia nitrogen removal rate ≥ 88%; total phosphorus removal rate ≥ 90%; TN removal rate ≥ 65%; SS removal rate close to 100%.

4. The system can be fully automated, managed online and centralized through the network, and the sewage treatment station is unattended. Under normal circumstances, the daily maintenance cycle is more than 3 months;

5. The cost of the system is within 40,000 yuan/household, and the land is saved. The area is less than 1m ² /m ³ water. According to the different treatment scale and treatment requirements, the operating cost per ton of water is 0.5 to 0.7 yuan. Compared with the conventional dynamic treatment process, it has obvious advantages in terms of construction cost and operating cost;

6. Low energy consumption: the unit sewage treatment cost (electricity charge) is 0.56 yuan/ton of water;

7. Low chemical consumption: the average cost of phosphorus removal agent per ton of sewage is 0.01 yuan/ton of water;

8. The sludge age of the system is long, the sludge production rate is low, the residual sludge production is small, and the average annual absolute dry sludge production is within 0.3 tons. In terms of sludge removal, it can be collected and treated with other sewage treatment stations in the area, and used after composting sludge, or transported to nearby sewage treatment plants.

The test results are shown in the table below:

Among them: the influent water is taken from the regulating pool; the effluent water is taken from the clear water well.

Claims (7)

1. modularization MBR distributing domestic sewage in rural areas integrated treating device, adopt MBR membrane bioreactor, at least comprise detritus pool, equalizing tank, the MBR membrane cisterna of MBR membrane bioreactor is set, anaerobic pond and clean water basin, it is characterized in that: MBR membrane bioreactor and anoxic pond are adopted the structure of integral type purification tank by described treatment unit, sequentially comprise detritus pool, equalizing tank, integral type purification tank and clean water basin, connected by pipeline between each pond, each pool water level is by Floating Ball Liquid Level device and solenoid control, sewage enters detritus pool, equalizing tank is entered through the gravity flow of detritus pool oettIed sewage, homogeneous in equalizing tank, after even amount, pump into the anoxic pond of integral type purification tank, then MBR membrane cisterna is entered, described MBR membrane cisterna is communicated with as aeration tank with gas blower, the charging opening throwing in dephosphorization agent is set at MBR membrane cisterna, gas blower carries out blast aeration to the sewage in MBR membrane cisterna and washes away to reduce fouling membrane to the membrane module of MBR membrane bioreactor, mixed solution after aeration is back to anoxic pond by stripping tube extracting, and biochemical reaction water outlet pumps into clean water basin by vacuum primingpump after membrane sepn, mud through excess sludge shore pipe to detritus pool.

2. modularization MBR distributing domestic sewage in rural areas integrated treating device according to claim 1, is characterized in that: described integral type purification tank adopts buried structure, wherein,

MBR membrane cisterna dissolved oxygen controls at 2 ~ 4mg/L;

Dissolved oxygen in anoxic tank controls at below 0.5mg/L;

Aeration tank sludge concentration: 3000mg/L ~ 6000mg/L;

Described vacuum primingpump operation scheme is for opening, stopping intermittent operation mode.

3. modularization MBR distributing domestic sewage in rural areas integrated treating device according to claim 1 and 2, it is characterized in that: described integral type purification tank by tank body as shell, anoxic pond is established in side, opposite side establishes MBR membrane cisterna, between described anoxic pond and MBR membrane cisterna, be provided with dividing plate and water hole, be provided with water inlet pipe in anoxic pond; MBR membrane cisterna is provided with membrane cisterna rising pipe, with sludge pipe, air line.

4. modularization MBR distributing domestic sewage in rural areas integrated treating device according to claim 3, is characterized in that: in described integral type purification tank, the cell body of MBR membrane cisterna is provided with manhole, for arranging the film guide rail frame of fixing membrane module.

5. modularization MBR distributing domestic sewage in rural areas integrated treating device according to claim 3, is characterized in that, arrange pipe network system, comprising in described integral type purification tank:

By the blast main stretched in membrane cisterna sludge pipe in MBR membrane cisterna, be connected through the excess sludge blast main of flange with the connection blower fan of tank body outside, form excess sludge air tube system;

MBR membrane cisterna sludge pipe is connected to detritus pool and forms excess sludge sludge drainage system;

Stretch into the return line in MBR membrane cisterna, tank body is outside forms internal reflux air tube system from blower fan to the return line of tank body;

Internal reflux water pipe system is provided with from MBR membrane cisterna to anoxic pond.

6. modularization MBR distributing domestic sewage in rural areas integrated treating device according to claim 1 and 2, it is characterized in that: the MBR membrane cisterna described in automatic monitoring equipment controls, each magnetic valve, gas blower, this automatic monitoring equipment at least comprises treater, data acquisition module, display module and monitoring module, the water level in each pond of data collecting module collected, the instantaneous delivery value of each pond connecting tube and integrated flow value, current consumption, negative pressure value on MBR membrane cisterna outlet pipeline, the data input reason device that data acquisition module will gather, complete after data compare and calculate within a processor, to described MBR membrane cisterna and each magnetic valve, gas blower is monitored.

7. modularization MBR distributing domestic sewage in rural areas integrated treating device according to claim 6, it is characterized in that: the system interface of described automatic monitoring equipment band Long-distance Control, administer comprehensively monitoring center and remote monitoring branch center with domestic sewage in rural areas and network.