CN207713585U - A kind of small-sized integrated processing equipment of northern country sanitary sewage - Google Patents

Abstract

The utility model relates to a small-scale integrated treatment equipment for domestic sewage in northern rural areas, which includes a regulating pool, an enhanced biological adsorption pool, an anoxic pool, an aerobic pool, a membrane pool and a liquid level regulating pool. The enhanced biosorption pool is connected to the anoxic pool through pipelines, an aerobic pool is set on one side of the anoxic pool, a membrane pool is set on the other side of the aerobic pool, and a liquid level is set on the other side of the membrane pool. Regulating tank; the membrane tank is equipped with submerged flat membrane modules to separate mud and water, and a membrane suction pump is installed outside the flat membrane modules. The other end of the pump is the water outlet. The treatment equipment occupies a small area, is simple to operate, has stable effluent quality, and is easy to maintain. It can operate under low temperature conditions for integrated treatment of rural domestic sewage.

Description

A small integrated treatment equipment for domestic sewage in northern rural areas

technical field

The utility model belongs to the field of sewage treatment equipment, in particular to a small integrated treatment equipment for domestic sewage in northern rural areas.

Background technique

The rural sewage discharge sources in northern my country are scattered, and the discharge of sewage to large and medium-sized sewage treatment plants or treatment stations requires the laying of a large number of pipelines, resulting in high construction intensity, poor economy, and waste of resources. Due to economic conditions and other factors, the existing rural areas, especially the northern rural areas, urgently need a mobile integrated sewage treatment equipment.

At present, sewage treatment equipment in northern rural areas is generally affected by low temperature conditions. During winter operation, microbial metabolism is slow, organic matter degradation efficiency is poor, the sedimentation performance of activated sludge gradually decreases with the decrease of temperature, and the content of suspended solids in effluent is high. There is an urgent need for a low temperature Ensure a certain treatment efficiency and good sewage treatment equipment for mud-water separation.

The concentration of organic pollutants and nitrogen and phosphorus in rural domestic sewage in the north is high, containing suspended solids and germs and other pollutants. The main pollutant discharge concentrations are shown in Table 1:

Table 1 Discharge concentrations of main pollutants in rural domestic sewage in northern China:

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At present, the sewage treatment equipment in northern rural areas does not make full use of the microorganisms in the wastewater that have adapted to the water quality, and discharge these microorganisms in the primary sedimentation tank. Set up a special reactor to make full use of this part of the microorganisms to achieve their enhanced biosorption capacity.

The rural areas in the north have a smaller drainage and sewage receiving area than the south, and the drainage volume fluctuates greatly with the seasons, and the impact load is large. The quality of sewage varies with the source of sewage, seasonal water use, and the presence or absence of flushing toilets, etc. It also includes sewage generated by household cleaning and garbage heap infiltration. The concentration of organic pollutants is relatively high, and generally does not contain toxic substances, nitrogen, phosphorus and other pollutants. The content is similar to that of urban domestic sewage, but the content of parasite eggs and bacteria is higher than that of urban domestic sewage. According to the status quo and water quality characteristics of northern rural areas, the characteristics of existing rural sewage treatment facilities are:

(1) Poor resistance to hydraulic shock load, small range of treated water, and unstable effluent quality;

(2) The sewage treatment efficiency is poor at low temperature, especially the denitrification treatment is significantly affected by the low temperature. The traditional denitrification process has a single return pipeline for the mixed liquid and a single working condition adjustment;

(3) The mud-water separation performance of the secondary sedimentation tank is poor at low temperature, and the content of suspended solids in the effluent is high;

(4) The original microorganisms in rural domestic sewage are not fully utilized;

If the content of organic matter in the wastewater is high, the problem of sludge bulking will easily occur.

Utility model content

Purpose of utility model

The purpose of the utility model is to provide an integrated treatment equipment for rural domestic sewage that occupies a small area, is simple to operate, has stable effluent quality, is convenient for maintenance, and can operate under low temperature conditions.

Technical solutions

A small integrated treatment equipment for domestic sewage in northern rural areas, including a regulating tank, an enhanced biological adsorption tank, an anoxic tank, an aerobic tank, a membrane tank and a liquid level regulating tank, characterized in that the regulating tank is connected to the enhanced biological adsorption tank through pipelines The pipeline between the adjustment tank and the enhanced biosorption tank is equipped with a mechanical diaphragm metering pump, the enhanced biosorption tank is connected to the anoxic tank through the pipeline, an aerobic tank is installed on one side of the anoxic tank, and The other side is provided with a membrane tank, and the other side of the membrane tank is provided with a liquid level adjustment tank; between the anoxic tank and the aerobic tank, between the aerobic tank and the membrane tank, and between the membrane tank and the liquid level adjustment tank There are overflow baffles for overflow blocking;

The membrane pool is equipped with a submerged flat-plate membrane module to separate the muddy water, and a membrane suction pump is arranged outside the flat-plate membrane module. The other end is the water outlet;

A sludge reflux pump is provided at the bottom of the membrane pool, and the sludge reflux pump is connected to the enhanced biological adsorption tank through the sludge reflux pipeline, and a discharge pipe is provided on the sludge reflux pipeline, and a discharge valve is also provided on the discharge pipe;

It also includes an air compressor and a pneumatic diaphragm pump. The air outlet of the air compressor is respectively connected to the microporous aeration tube at the bottom of the aerobic tank, the large-porous aeration tube at the bottom of the flat membrane module and the air inlet of the pneumatic diaphragm pump through the pipeline. The three water inlets of the pneumatic diaphragm pump are connected with the aerobic tank, the membrane tank and the liquid level adjustment tank through the pipeline, and one outlet of the pneumatic diaphragm pump is connected with the anoxic tank through the pipeline. Empty tube.

The pipeline between the regulating tank and the enhanced biosorption tank is provided with a mechanical diaphragm metering pump.

The anoxic pool is provided with a vertical stirring motor and supporting stirring paddles.

An electric control box is provided, and the electric control box is connected with a mechanical diaphragm metering pump, an air compressor, a vertical stirring motor, a sludge return pump and a membrane suction pump.

The aerobic pool is filled with fillers.

The aerobic pool is provided with a plate slot, and a baffle a is inserted therein.

The intensified biosorption tank is provided with an inserting plate slot, and a baffle b is inserted therein.

There are three liquid level control points in the liquid level regulating tank from high to low in order, the high liquid level control point, the low liquid level control point and the warning liquid level control point. The diaphragm metering pump is connected, and the warning liquid level control point is connected with the pneumatic diaphragm pump and the diaphragm suction pump.

Advantages and effects

The advantages and positive effects that the utility model has are:

(1) The utility model is a small integrated equipment for treating sewage from multiple households in rural areas, which occupies a small area and is convenient for transportation;

(2) Various ways of reflux of mixed liquid, strong controllability and good denitrification effect;

(3) Make full use of the microorganisms in the raw water that have adapted to the raw water quality to achieve enhanced adsorption capacity for suspended solids in the raw water;

(4) The effect of low temperature on the adsorption and denitrification of microorganisms is effectively reduced, and the effect of low temperature on the separation of mud and water is effectively reduced;

(5) It can realize the intermittent operation of the equipment, reduce the energy consumption and improve the efficiency of the equipment;

(6) In view of the water quality characteristics in rural areas, the utility model adopts a mature and stable treatment process, which makes the water output stable and realizes the resource utilization of water;

(7) The construction cost of the project is low, the operation cost is low, and it has great significance in terms of economic benefits, environmental benefits and social benefits.

Description of drawings

Fig. 1 is the sectional flow chart of the utility model;

Fig. 2 is a plane layout diagram of the utility model.

Explanation of reference signs: 1-regulating tank; 2-mechanical diaphragm metering pump; 3-enhanced biological adsorption tank; 4-air compressor; 5-vertical stirring motor; 6-anoxic tank; 7-aerobic tank; 8 -microporous aeration tube; 9-filler; 10-pneumatic diaphragm pump; 11-membrane tank; 12-flat membrane module; 13-liquid level adjustment tank; 14-sludge return pump; 15-membrane suction pump; 16 -electric control box; 17-discharge pipe; 18-discharge valve; 19-baffle a; 20-low liquid level control point; 21-warning liquid level control point; 22-high liquid level control point; 23-baffle Panel b; 24—Macroporous aeration tube.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described:

As shown in Figure 1 and Figure 2, a small-scale integrated treatment equipment for domestic sewage in northern rural areas, including a regulating tank 1, an enhanced biological adsorption tank 3, an anoxic tank 6, an aerobic tank 7, a membrane tank 11 and a liquid level regulating tank 13. The adjustment tank 1 is connected to the enhanced biosorption tank 3 through pipelines. The pipeline between the adjustment tank 1 and the enhanced biosorption tank 3 is equipped with a mechanical diaphragm metering pump 2. The outlet water of the adjustment tank 1 can be lifted through the mechanical diaphragm metering pump 2. To the enhanced biosorption pool 3, the enhanced biosorption pool 3 is provided with an inserting plate groove, and a baffle plate b 23 is inserted therein. The baffle plate b 23 can increase the hydraulic retention time and increase the reaction driving force, and the baffle plate b 23 is provided The enhanced biosorption pool 3 is operated under anaerobic or anoxic conditions, which strengthens the rapid adsorption of activated sludge and a certain limit of phosphorus release under low temperature conditions, and can perform pre-denitrification to inhibit the expansion of filamentous bacteria. The enhanced biosorption tank 3 is connected to the anoxic tank 6 through pipelines, and the anoxic tank 6 is provided with a vertical stirring motor 5 and a supporting stirring paddle, which can fully mix the activated sludge and sewage without causing the sludge to settle into the Keep a certain amount of dissolved oxygen at the bottom of the anoxic pool. One side of anoxic pool 6 is provided with aerobic pool 7, and packing 9 is housed in described aerobic pool 7, and described aerobic pool 7 is provided with inserting plate groove, is inserted with baffle plate a 19, and baffle plate a19 It can increase the hydraulic retention time and increase the driving force of the reaction. The other side of the aerobic tank 7 is provided with a membrane tank 11, and the other side of the membrane tank 11 is provided with a liquid level adjustment tank 13. The liquid level adjustment tank 13 is from high to low There are three liquid level control points in sequence: high liquid level control point 22, low liquid level control point 20 and warning liquid level control point 21. The high liquid level control point 22 and low liquid level control point 20 are connected to the mechanical diaphragm metering pump 2 , the warning liquid level control point 21 is connected with the pneumatic diaphragm pump 10 and the membrane suction pump 15 . The liquid level regulating pool 13 makes the aerobic pool 7 and the membrane pool 11 both have a constant liquid level, and both the aerobic pool and the membrane pool can reach the maximum volume. There are three liquid level control points in the liquid level regulating pool 13, the high liquid level control point 22 (H), the low liquid level control point 20 (L) and the warning liquid level control point 21 (A). Liquid level control mechanical diaphragm metering pump 2, warning liquid level control point 21 (A) controls pneumatic diaphragm pump 10 and membrane suction pump 15 for transporting sludge mixed liquid. Between the anoxic pool 6 and the aerobic pool 7, between the aerobic pool 7 and the membrane pool 11, between the membrane pool 11 and the liquid level adjustment pool 13, overflow baffles are arranged for overflow blocking; The membrane tank 11 is equipped with a submerged flat-plate membrane module 12 to separate the muddy water, and a membrane suction pump 15 is arranged outside the flat-plate membrane module 12. , the other end of the membrane suction pump 15 is a water outlet; the bottom of the membrane tank 11 is provided with a sludge return pump 14, and the sludge return pump 14 is connected with the enhanced biological adsorption tank 3 through the sludge return pipeline, and the sludge return pipeline The road is provided with discharge pipe 17, and discharge pipe 17 is also provided with discharge valve 18; The microporous aeration pipe 8 and the macroporous aeration pipe 24 at the bottom of the flat membrane module 12 are connected to the air inlet of the pneumatic diaphragm pump 10; the three water inlets of the air diaphragm pump 10 are connected to the aerobic tank 7, membrane Pool 11 communicates with liquid level regulating pool 13, and a water outlet of pneumatic diaphragm pump 10 communicates with anoxic pool 6 through a pipeline, and pneumatic diaphragm pump 10 is also provided with an emptying pipe. The air compressor 4 can aerate the aerobic tank 7 and flush the flat membrane module 12 , and provide operating power for the pneumatic diaphragm pump 10 . The processing equipment is also equipped with an electric control box 16, which is connected with the mechanical diaphragm metering pump 2, the air compressor 4, the vertical stirring motor 5, the sludge return pump 14 and the membrane suction pump 15.

The method of using small-scale integrated treatment equipment for rural domestic sewage in the north to treat sewage is as follows: rural domestic sewage first enters the regulating tank 1, and after adjusting the water quality and quantity, the sewage is lifted by the mechanical diaphragm metering pump 2 to the enhanced biological adsorption tank 3 for rapid After the pollutants are adsorbed, it flows into the anoxic pool 6 and the aerobic pool 7 in turn to further optimize the water quality, and at the same time, the mixed liquid in the aerobic pool 7, the membrane pool 11, and the liquid level adjustment pool 13 returns to the The denitrification treatment is carried out in the anoxic tank 6, and finally enters the membrane tank 11 and passes through the flat membrane module 12 for mud-water separation, and the effluent is pumped out by the membrane suction pump 15.

Obviously, the above-mentioned embodiments of the present utility model are only examples for clearly illustrating the present utility model, rather than limiting the implementation of the present utility model. For those of ordinary skill in the art, on the basis of the above description Other changes or changes in different forms can also be made, and all embodiments cannot be exhaustively listed here, and all obvious changes or changes that are extended by the technical solutions of the utility model are still within the protection scope of the utility model.

Claims (7)

1. a kind of small-sized integrated processing equipment of northern country sanitary sewage, including regulating reservoir（1）, fortified biosorption pond（3）、 Anoxic pond（6）, aerobic tank（7）, membrane cisterna（11）With liquid level regulating reservoir（13）, it is characterised in that：Regulating reservoir（1）By pipeline and by force Metaplasia object adsorption tank（3）It is connected, regulating reservoir（1）With fortified biosorption pond（3）Between pipeline be equipped with mechanically actuated diaphragm metering pump （2）, fortified biosorption pond（3）Pass through pipeline and anoxic pond（6）It is connected, anoxic pond（6）Side be equipped with aerobic tank（7）, good Oxygen pond（7）The other side be equipped with membrane cisterna（11）, membrane cisterna（11）The other side be equipped with liquid level regulating reservoir（13）；The anoxic pond（6） And aerobic tank（7）Between, aerobic tank（7）And membrane cisterna（11）Between, membrane cisterna（11）With liquid level regulating reservoir（13）Between all be equipped with overflow Baffle is flowed to keep off for overflow lattice；

The membrane cisterna（11）The interior plate film assembly equipped with immersion（12）Muddy water is detached, plate film assembly（12）Peripheral hardware There is film suction pump（15）, film suction pump（15）One end passes through pipeline and plate film assembly（12）The collector pipe on top is connected, and film is taken out Sucking pump（15）The other end be water outlet；

The membrane cisterna（11）Bottom is equipped with sludge reflux pump（14）, sludge reflux pump（14）Pipeline by sludge reflux and reinforcing Biological adsorption pond（3）The pipeline of connection, sludge reflux is equipped with excretory duct（17）, excretory duct（17）On be additionally provided with excretion valve （18）；

It further include air compressor machine（4）And pneumatic diaphragm pump（10）, air compressor machine（4）Gas outlet by pipeline respectively with aerobic tank（7） The micropore aeration pipe of bottom（8）, plate film assembly（12）The macropore aeration tube of bottom（24）And pneumatic diaphragm pump（10）Air inlet Mouth is connected；Pneumatic diaphragm pump（10）Three water inlets pass through pipeline and aerobic tank（7）, membrane cisterna（11）With liquid level regulating reservoir（13） Connection, pneumatic diaphragm pump（10）A water outlet pass through pipeline and anoxic pond（6）Connection, pneumatic diaphragm pump（10）The row of being additionally provided with Blank pipe.

2. the small-sized integrated processing equipment of northern country sanitary sewage according to claim 1, it is characterised in that：The anoxic Pond（6）It is equipped with vertical type stirring motor（5）With mating agitating paddle.

3. the small-sized integrated processing equipment of northern country sanitary sewage according to claim 2, it is characterised in that：Equipped with automatically controlled Case（16）, electric cabinet（16）With mechanically actuated diaphragm metering pump（2）, air compressor machine（4）, vertical type stirring motor（5）, sludge reflux pump（14） With film suction pump（15）It is connected.

4. the small-sized integrated processing equipment of northern country sanitary sewage according to claim 1, it is characterised in that：It is described aerobic Pond（7）It is interior that filler is housed（9）.

5. according to the small-sized integrated processing equipment of northern country sanitary sewage of claim 1 or 4, it is characterised in that：It is described Aerobic tank（7）It is interior to be equipped with plugboard trough, inserted with baffle plate a（19）.

6. the small-sized integrated processing equipment of northern country sanitary sewage according to claim 1, it is characterised in that：The reinforcing Biological adsorption pond（3）It is interior to be equipped with plugboard trough, inserted with baffle plate b（23）.

7. the small-sized integrated processing equipment of northern country sanitary sewage according to claim 1, it is characterised in that：The liquid level Regulating reservoir（13）Inside it is equipped with high liquid level control point successively from high to low（22）, low liquid level control point（20）With warning Liquid level point （21）Three Liquid level points, high liquid level control point（22）With low liquid level control point（20）With mechanically actuated diaphragm metering pump（2）It is connected, Alert Liquid level point（21）With pneumatic diaphragm pump（10）With film suction pump（15）It is connected.