CN217323552U - Integrated device for treating domestic sewage - Google Patents

Abstract

The utility model relates to an integrated device for treating domestic sewage, which comprises a biological pool and an equipment room, wherein the biological pool is separated from the equipment room by a partition board, the biological pool is divided into an aerobic system close to the equipment room and an anoxic system far away from the equipment room, the anoxic system controls the dissolved oxygen concentration for a gas stirring device, and the aerobic system utilizes the self-rotation reflux effect of an array flat membrane group device to optimize the layout of the gas stirring device; an electric control cabinet for controlling the operation of the system, fan equipment for providing stirring air for each biochemical system and aerating the array flat-plate membrane group device and a suction pump for performing mud-water separation to produce water by sucking the array flat-plate membrane group device are arranged in the equipment room. The utility model realizes the optimized layout of the array flat membrane group device by utilizing the self-rotating reflux of the array flat membrane group device, cancels the aeration device of the aerobic tank and saves the aeration energy consumption; the partition plates of different process areas and the reflux pump are eliminated, so that the structure and the investment of sewage treatment equipment are simplified; and the MBBR is combined with the MBR, so that the pollution of a membrane module device is reduced.

Description

Integrated device for treating domestic sewage

Technical Field

The utility model relates to a water treatment field, concretely relates to handle domestic sewage's integrated device.

Background

As a high-efficiency water treatment method, a Membrane Bioreactor (MBR) has incomparable advantages compared with the traditional sewage treatment process, but the problem of high energy consumption is always a key factor which troubles the long-term stable operation and wide application of the technology in water treatment. In the operation of the submerged MBR, aeration can effectively maintain membrane flux and control membrane pollution on the one hand, and provides oxygen necessary for metabolism for microorganisms on the other hand, but the energy consumption of aeration occupies most of the operation cost.

In the integrated sewage treatment system, in order to remove various pollutants, different process partitions are generally carried out by using partition plates, namely an anoxic tank, an aerobic tank, a membrane tank and the like, in order to ensure the removal rate of total nitrogen of the pollutants, a reflux pump is used for forcing mixed liquor in the membrane tank to return to the front end of the anoxic tank, so that the equipment investment cost is increased, and the equipment operation cost is also increased.

SUMMERY OF THE UTILITY MODEL

The utility model discloses just provide a handle domestic sewage's integrated device for solving the defect that exists among the prior art.

The technical scheme of the utility model as follows:

an integrated device for treating domestic sewage comprises a biological tank and a device room, wherein the biological tank is separated from the device room by a partition plate, the biological tank is divided into an aerobic system close to the device room and an anoxic system far away from the device room, no clear limit exists between the aerobic system and the anoxic system, the anoxic system is a gas stirring device for controlling the concentration of dissolved oxygen, and the aerobic system optimizes the layout of the gas stirring device by utilizing the self-rotating reflux effect of an array flat membrane group device to ensure that the interior of the tank body is in an aerobic state; an electric control cabinet for controlling the operation of the system, fan equipment for providing stirring air for each biochemical system and aerating the array flat-plate membrane group device and a suction pump for performing mud-water separation to produce water by sucking the array flat-plate membrane group device are arranged in the equipment room.

Preferably, the gas stirring device is arranged at the bottom of the biological pond.

Preferably, the number of the gas stirring devices is set according to the amount of the treated water.

Preferably, the gas stirring device controls the dissolved oxygen concentration of the anoxic system to be less than 0.5mg/L by controlling the gas amount through a valve.

Preferably, a basket grid is arranged at one side of the top of the biological pond, which is close to the anoxic system.

Preferably, the MBBR filling material is added into the whole biological pond.

The utility model discloses utilize the self-rotation of array dull and stereotyped membrane to flow back and the optimization overall arrangement of group ware, simplified sewage treatment device structure. The utility model provides a technical problem as follows:

(1) the utility model discloses the array flat plate membrane group ware spin backward flow after the utilization optimizes the overall arrangement stirs with oxygen deficiency pond gas and carries out the mixed flow, cancels the forced backward flow of backwash pump, cancels the baffle in the reaction tank, saves the operation energy consumption and simplifies equipment structure, reduction in production cost.

(2) The utility model discloses utilize the high dissolved oxygen that membrane group ware brought to optimize the overall arrangement of array dull and stereotyped membrane group ware in integrated equipment, under keeping original aeration intensity condition, cancel good oxygen pond aeration dish and arrange, save the aeration energy consumption.

(3) The utility model discloses MBBR packs in throwing in full pond, and MBBR combines together with MBR and uses, and MBBR packs and goes up to get the biomembrane and can keep under the condition of high biomass at whole cell body, controls lower activated sludge concentration, reduces the membrane and pollutes, and MBBR's mobility makes a large amount of fillers and membrane surface friction, also can improve the surface sludge pollution of the dull and stereotyped membrane of array.

Drawings

In order to make the technical solution and the advantageous technical effects of the present invention easier to understand, the present application is described in detail with reference to the embodiments of the present invention shown in the accompanying drawings. The drawings depict only typical embodiments of the application and are not therefore to be considered to be limiting of its scope, for the application is described in the following:

FIG. 1 is a front view of an integrated domestic sewage treatment apparatus according to the present invention;

figure 2 is a top view of the integrated domestic sewage treatment device according to the present invention.

Detailed Description

The following describes in detail a specific embodiment of the present invention with reference to fig. 1 and 2.

The integrated device for treating the domestic sewage comprises a biological tank and an equipment room 7, wherein the biological tank comprises an anoxic system 3 and an aerobic system 5. There is no clear limit between the anoxic system and the aerobic system, the volume of the area can be adjusted according to the specific water quality condition, and the equipment room 7 is separated from the biological tank by a partition board. The oxygen deficiency system controls the dissolved oxygen concentration to be less than 0.5mg/L for gas stirring device 2, and the accessible valve control tolerance size to control dissolved oxygen, strong stirring capacity makes MBBR fill the material and has better mobility, and the quantity of gas stirring device 2 can be according to the treatment water volume setting, has set up four in the picture. The aerobic system 5 utilizes the self-rotating reflux effect of the array flat membrane group device 4 to optimize the layout of the gas stirring device, so that the interior of the tank body is in an aerobic state, a good aeration disc is saved, the energy consumption of products is reduced, and the self-rotating reflux state of the group device enables the reflux effect between the anoxic system and the aerobic system to be achieved without reflux of a reflux pump. MBBR filler 6 is added into the biochemical part of the whole tank body, and the MBBR filler 6 is fluidized in the whole biochemical system and is in frictional contact with the surface of a flat plate membrane of the membrane group device, so that the pollution caused by sludge accumulation on the surface of the membrane is relieved to a certain degree. The inter-equipment internal fan device 8 provides stirring air for each biochemical system and the array flat-plate membrane group device 4 for aeration, and the suction pump 9 performs mud-water separation through the suction array flat-plate membrane group device 4 to produce water.

And a basket grid 1 is arranged at one side of the top of the biological pond, which is close to the anoxic system 3. The raw water pretreatment is further filtered by a basket grid 1 and then enters an anoxic system 3, the dissolved oxygen of the anoxic system 3 is controlled to be below 0.5mg/L by a gas stirring device 2, the dissolved oxygen is fully stirred and mixed, and the mud-water mixture is fully mixed and enters an aerobic system 5. The aerobic system 5 is not provided with a micropore aeration disc, the whole aerobic system and the MBBR filler 6 are fluidized and oxygenated by utilizing a spinning backflow system of the array flat plate membrane group device 4 and high dissolved oxygen during aeration of the array flat plate membrane group device 4, sewage is subjected to biochemical reaction under the aerobic system 5, and sludge-water separation is carried out through the array flat plate membrane group device 4 after removal and nitrification of biochemical organic matters are completed. Nitrified liquid flows back through the array flat membrane group device 4 in a spinning mode, the muddy water is fully mixed through the spinning backflow, the nitrified liquid and the gas stirring device 2 enable the anoxic system 3 to be in a mixed flow state, denitrification is carried out, and total nitrogen is guaranteed to be removed. A system used by a sewage integrated system is placed in the equipment room 7, the fan equipment 8 provides stirring and aeration for the anoxic system 3 and the array flat plate membrane group device 4 so as to control biochemical conditions and relieve membrane pollution, the suction pump 9 (a water production pump) sucks the array flat plate membrane group device 4 for discharging produced water, and the electric control cabinet 10 internally contains electric controls to control the stable operation of the whole system.

Example (b): pending domestic sewage inflow CODcr is 100 ~ 350mg/L, ammonia nitrogen 28 ~ 35mg/L, total nitrogen 30 ~ 40mg/L, throughput 200t d, warp the utility model discloses an integration sewage treatment system handles, and oxygen deficiency system volume accounts for whole biochemical volumetric 50%, and the oxygen deficiency system arranges 4 gas stirring device, and aerobic system arranges a flat plate membrane group ware of array, and the flat plate membrane group ware of array is as mud-water separator promptly, also as aerobic system aeration equipment. The array flat plate membrane group device is 1.5-3 m away from the equipment partition plate, and the specific distance can be adjusted according to the length of the box body and the aeration intensity. The whole process has the advantages that the MBBR filler has good fluidity due to the stirring effect of the aeration of the gas stirring device and the membrane group device, and the adding rate of the MBBR filler is 15-20%. The array flat plate membrane group device pumps the membrane group device through a water production pump in an equipment room to separate sludge and water, COD effluent is below 50mg/L, ammonia nitrogen effluent is below 5mg/L, total nitrogen effluent is below 15mg/L, and effluent of main pollutants can stably reach the first-grade A standard of pollutant emission of a municipal sewage treatment plant.

The utility model realizes the optimized layout of the array flat membrane group device by utilizing the self-rotating reflux of the array flat membrane group device, cancels the aeration device of the aerobic tank and saves the aeration energy consumption; the method has the advantages that different process area partition plates and reflux pumps are omitted, nitrification and denitrification in the same space are realized, and the structure and investment of sewage treatment equipment are simplified; and the MBBR is combined with the MBR, so that the pollution of a membrane module device is reduced.

The invention can be embodied in other specific forms without however departing from the scope of protection of the invention, which is limited only by the accompanying claims.

Claims (6)

1. The utility model provides a handle domestic sewage's integrated device, includes biological pond and equipment room, its characterized in that: the biological tank is separated from the equipment by a partition board, the biological tank is divided into an aerobic system close to the equipment and an anoxic system far away from the equipment, no clear boundary exists between the aerobic system and the anoxic system, the anoxic system is a gas stirring device for controlling the concentration of dissolved oxygen, and the layout of the gas stirring device is optimized by the aerobic system through the self-rotating reflux effect of the array flat membrane group device, so that the interior of the tank body is in an aerobic state; an electric control cabinet for controlling the operation of the system, fan equipment for providing stirring air for each biochemical system and aerating the array flat-plate membrane group device and a suction pump for performing mud-water separation to produce water by sucking the array flat-plate membrane group device are arranged in the equipment room.

2. The integrated domestic sewage treatment apparatus of claim 1, wherein the gas agitation device is disposed at the bottom of the biological tank.

3. The integrated apparatus for treating domestic sewage according to claim 2, wherein the number of the gas agitating means is set according to the amount of treated water.

4. The integrated domestic sewage treatment apparatus of claim 1, wherein the gas stirring device controls the amount of gas by a valve to control the concentration of dissolved oxygen in the anoxic system to be less than 0.5 mg/L.

5. The integrated apparatus for treating domestic sewage according to claim 1, wherein the biological tank is filled with MBBR filler.

6. The integrated domestic sewage treatment apparatus according to any one of claims 1 to 5, wherein a basket grid is installed on the top of the biological tank near the anoxic system.

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