Sewage comprehensive treatment system

Abstract

The utility model relates to the technical field of rural sewage and organic chemical sewage treatment, in particular to a rural sewage and organic chemical sewage comprehensive treatment system which comprises an aerated grit chamber, a grating tank, a biochemical treatment mechanism, a membrane bioreactor and a reverse osmosis mechanism which are sequentially connected end to end, the reverse osmosis mechanism comprises a shell as well as a front chamber, a reverse osmosis membrane chamber and a rear chamber which are sequentially arranged in the shell along the water flow direction and are sequentially communicated, the membrane bioreactor is communicated with the front chamber, and the rear chamber is reversely communicated with the aerated grit chamber and the front chamber. According to the comprehensive treatment system for rural sewage and organic chemical sewage provided by the utility model, advanced pretreatment, biochemical treatment, membrane separation technologies and resource recycling strategies are integrated, so that the sewage treatment efficiency and quality are remarkably improved, the sustainable utilization of resources is promoted, and the economic benefit is increased. The method has important significance for improving the water environment quality in rural areas and chemical engineering areas.

Description

TECHNICAL FIELD

[0001] The utility model relates to rural sewage and organic chemical industry sewage treatment technical field especially is involved in a kind of rural sewage and organic chemical industry sewage comprehensive treatment system. BACKGROUND

[0002] Current market is aimed at single type of wastewater, usually using specific treatment process to handle, this kind of method practicality is strong, effluent standard can satisfy relevant requirement.However, rural sewage treatment scale is relatively small, daily treatment capacity usually does not exceed 100 cubic meters, therefore multiple container type treatment equipment is used.However, the use range of this kind of equipment is relatively narrow, and after treatment, idle problem is often faced, causing waste of resource investment.Especially for emergency treatment and short-term treatment project, such as pesticide wastewater treatment, multiple container type treatment equipment is also used.For avoiding equipment idle, saving manpower and material resources investment, design a kind of container type comprehensive treatment equipment capable of handling multiple types of wastewater is particularly urgent.Such equipment not only can make full use of resources, but also can maximize the use time of equipment, improve the utilization of equipment.

[0003] In view of this, the utility model is provided. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of rural sewage and organic chemical industry sewage comprehensive treatment system, the system not only significantly improves the efficiency and quality of wastewater treatment, but also promotes the sustainable use of resources.

[0005] The utility model provides a kind of rural sewage and organic chemical industry sewage comprehensive treatment system, including aeration grit chamber, grating pool, biochemical treatment mechanism, membrane biological reactor and reverse osmosis mechanism in turn head-to-tail connection,

[0006] Wherein, the reverse osmosis mechanism includes shell and is sequentially arranged in the inside of shell and sequentially communicates front chamber, reverse osmosis membrane piece chamber and rear chamber along water flow direction, the membrane biological reactor is communicated with the front chamber, the rear chamber is communicated with the aeration grit chamber, the front chamber reverse.

[0007] As the preferred technical solution of the present application, the aeration grit chamber includes first cylinder, cone barrel and second cylinder arranged in turn from top to bottom,

[0008] Wherein, the first cylinder is connected with the large mouth end of the cone barrel, the second cylinder is connected with the small mouth end of the cone barrel, water guide groove is arranged on the inner side wall of the first cylinder, and microporous aeration pipe is arranged on the inner side wall of the cone barrel.

[0009] As the preferred technical solution of the present application, the ratio of the inner diameter of the first cylinder, the cone barrel and the second cylinder is 4: (2-2.5): 1.

[0010] Preferably, the aeration grit chamber is provided with a stirrer in the first cylinder.

[0011] Preferably, the grid chamber is provided with a flushing device above.

[0012] Preferably, the diameter of the grid in the grid chamber is 1.5-9mm.

[0013] Preferably, the biochemical treatment mechanism comprises an anaerobic tank, an anoxic tank and an aerobic tank arranged in sequence along the water flow direction,

[0014] The anoxic tank is reversely communicated with the anaerobic tank, the aerobic tank is reversely communicated with the anoxic tank, and the pipeline reversely communicated with the anaerobic tank and the pipeline reversely communicated with the anoxic tank are both provided with flow meters and valves.

[0015] The grid chamber is communicated with the anaerobic tank, and the aerobic tank is communicated with the membrane bioreactor.

[0016] Preferably, the sludge discharge port of the membrane bioreactor is reversely communicated with the aerobic tank, and the communicated pipeline is provided with a flow meter and a valve.

[0017] Preferably, the pipeline communicated with the front chamber is provided with a high-pressure water pump, a flow meter and a valve.

[0018] Preferably, the pipeline reversely communicated with the front chamber is provided with a flow meter and a valve.

[0019] The rural sewage and organic chemical sewage comprehensive treatment system has at least the following beneficial effects:

[0020] 1. The rural sewage and organic chemical sewage comprehensive treatment system of the utility model comprises aeration grit chamber, grating pool, biochemical treatment mechanism, membrane bioreactor and reverse osmosis mechanism which are connected in sequence. Firstly, through the combination of aeration grit chamber and grating pool, large particle impurities and inorganic sand particles in sewage can be effectively removed, and a relatively clean water quality basis is provided for subsequent biological treatment steps. In addition, the aeration process also helps to increase the dissolved oxygen content in the sewage, creating favorable conditions for subsequent biological treatment; and the biochemical treatment mechanism as the core part of the system can effectively degrade organic pollutants in the sewage, including agricultural waste in rural sewage and complex organic matter in organic chemical sewage, by using the metabolic action of microorganisms. This process not only improves the biodegradability of the sewage, but also significantly reduces the organic load, thereby reducing the pressure on subsequent advanced treatment; further, the membrane bioreactor (MBR) can further remove suspended solids, colloids, bacteria and most viruses through the high-efficiency interception of its ultrafiltration or nanofiltration membrane, thereby ensuring the safety of the effluent water quality. Finally, the reverse osmosis mechanism uses the principle of semi-permeable membrane to deeply intercept the dissolved solids, heavy metal ions and organic small molecules in the water, thereby achieving nearly complete purification of the sewage, and the effluent water quality can meet the high-standard discharge or recycling requirements; in addition, the rear chamber of the reverse osmosis mechanism is reversely communicated with the aeration grit chamber, that is, the concentrated water (containing a higher concentration of salt and refractory substances) generated by reverse osmosis can be returned to the front end for further treatment or used for specific agricultural irrigation (which needs to be analyzed according to the specific water quality), which not only reduces wastewater discharge, but also promotes effective recycling of resources. Therefore, the rural sewage and organic chemical sewage comprehensive treatment system provided by the utility model integrates advanced pretreatment, biochemical treatment, membrane separation technology and resource recycling strategies, thereby significantly improving the efficiency and quality of sewage treatment, promoting sustainable use of resources, and having important significance for improving the water environment quality of rural and chemical regions.

[0021] 2. In the rural sewage and organic chemical sewage comprehensive treatment system of the utility model, the reverse osmosis mechanism is provided with a front chamber, a reverse osmosis membrane chamber and a rear chamber which are connected in sequence, which is helpful for the homogeneity of the inlet water and outlet water. Firstly, homogeneous inlet water can ensure that the water flow is more evenly distributed in the reverse osmosis membrane chamber, avoiding local membrane surface overload caused by uneven water flow distribution. When the water flow is evenly distributed, each membrane element can withstand relatively uniform water pressure, thereby improving the overall membrane flux; in addition, homogeneous inlet water is also helpful for improving the desalination rate of the reverse osmosis membrane. When the water flow is evenly distributed, the concentration polarization phenomenon on the membrane surface will be alleviated. Finally, homogeneous inlet water is also helpful for reducing the risk of membrane pollution. When the water flow is evenly distributed, the distribution of impurities and pollutants on the membrane surface will also be more uniform, which helps to reduce the blockage and pollution of the membrane surface. At the same time, homogeneous outlet water can also better carry away the pollutants on the membrane surface, maintaining the cleanliness and efficient operation of the membrane. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or the prior art description. Obviously, the drawings described below are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0023] Fig. 1 It is a structural schematic view of the rural sewage and organic chemical sewage comprehensive treatment system of the present application.

[0024] Fig. 2 It is a structural schematic view of the reverse osmosis mechanism of the present application.

[0025] Explanation of reference signs:

[0026] 1: aeration grit chamber; 2: grid chamber; 3: membrane bioreactor; 4: reverse osmosis mechanism; 5: front chamber; 6: reverse osmosis membrane chamber; 7: rear chamber; 8: agitator; 9: flushing device; 10: anaerobic tank; 11: anoxic tank; 12: aerobic tank. Specific embodiments

[0027] The technical solutions of the present application will be described below in conjunction with embodiments. Obviously, the described embodiments are some embodiments of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0028] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly; for example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] Example

[0031] like Figs. 1-2 As shown, this embodiment provides a comprehensive treatment system for rural sewage and organic chemical wastewater, including an aerated grit chamber 1, a grit chamber 2, a biochemical treatment unit, a membrane bioreactor 3, and a reverse osmosis unit 4 connected end to end. The reverse osmosis unit 4 includes a shell and a front chamber 5, a reverse osmosis membrane chamber 6, and a rear chamber 7, which are arranged and connected in sequence along the water flow direction inside the shell. The membrane bioreactor 3 is connected to the front chamber 5, and the rear chamber 7 is connected in reverse to the aerated grit chamber 1 and the front chamber 5.

[0032] In the sewage treatment system of the present embodiment, first, through the combination of the aerated grit chamber 1 and the grid chamber 2, the large-particle impurities and inorganic sand particles in the sewage can be effectively removed, providing a relatively clean water quality basis for the subsequent biological treatment step. In addition, the aeration process helps to increase the dissolved oxygen content in the sewage, creating favorable conditions for subsequent biological treatment; and the biochemical treatment mechanism, as the core part of the system, can effectively degrade organic pollutants in the sewage, including agricultural waste in rural sewage and complex organic matter in organic chemical sewage, through the metabolic action of microorganisms. This process not only improves the biodegradability of the sewage, but also significantly reduces the organic load, relieving the pressure on subsequent advanced treatment; further, the membrane bioreactor 3 (MBR) can further remove suspended solids, colloids, bacteria and most viruses through the efficient interception of its ultrafiltration or nanofiltration membrane, ensuring the safety of the effluent water quality. Finally, the reverse osmosis mechanism 4 uses the principle of semi-permeable membrane to deeply intercept dissolved solids, heavy metal ions, and small organic molecules in water, achieving nearly complete purification of the sewage, and the effluent water quality can meet high-standard discharge or reuse requirements; in addition, the rear chamber 7 of the reverse osmosis mechanism 4 is reversely connected with the aerated grit chamber 1, that is, the concentrated water (containing a higher concentration of salt and refractory substances) produced by reverse osmosis can be returned to the front end for further treatment or used for specific agricultural irrigation (depending on the specific analysis of water quality), which not only reduces wastewater discharge, but also promotes effective recycling of resources.

[0033] In the present embodiment, the reverse osmosis mechanism 4 is arranged in sequence as the front chamber 5, the reverse osmosis membrane chamber 6 and the rear chamber 7, which helps to homogenize the inflow and outflow. First, homogenized inflow can ensure that the water flow is more evenly distributed in the reverse osmosis membrane chamber 6, avoiding local membrane surface overload caused by uneven water flow distribution. In addition, homogenized inflow also helps to improve the desalination rate of the reverse osmosis membrane and alleviate the concentration polarization phenomenon on the membrane surface. Finally, homogenized inflow also helps to reduce the risk of membrane fouling, as uniform water flow distribution also leads to more uniform distribution of impurities and pollutants on the membrane surface, which helps to reduce membrane blockage and contamination. At the same time, homogenized outflow can also better remove pollutants from the membrane surface, maintaining the cleanliness and efficient operation of the membrane.

[0034] On the basis of the above technical solutions, further preferably, the aerated grit chamber 1 comprises a first cylinder, a conical barrel and a second cylinder arranged in sequence from top to bottom, wherein the first cylinder is connected with the large-end of the conical barrel, the second cylinder is connected with the small-end of the conical barrel, a water guide groove is arranged on the inner side wall of the first cylinder, and a microporous aeration pipe is arranged on the inner side wall of the conical barrel.

[0035] When water flows in, sewage enters the aeration grit chamber 1 along the water guide groove arranged on the inner side wall of the first cylinder. By adjusting the flow rate of the incoming water, a certain range of centrifugal force can be generated, so that sand of different diameters in the sewage enters the second cylinder from the first cylinder and the conical barrel in turn, and finally is discharged from the second cylinder to the sand transport trolley.

[0036] In addition, in the embodiment, the inner side wall of the conical barrel is provided with a microporous aeration pipe, which not only facilitates the washing of sand, but also reduces the density of organic matter, so that the organic matter rises and enters the grid pool 2 with relatively pure sewage for further treatment.

[0037] In the embodiment, specifically, the inner diameter ratio of the first cylinder, the conical barrel and the second cylinder is 4: (2-2.5): 1, and preferably 4:2.2:1.

[0038] In addition, the first cylinder of the aeration grit chamber 1 in the embodiment is also provided with a stirrer 8 to increase the disturbance of the sewage and effectively remove large-particle impurities and inorganic sand and gravel in the sewage.

[0039] Further preferably, based on the above technical solutions, the upper part of the grid pool 2 is provided with a flushing device 9 to periodically flush the debris in the grid and between the grid pores, thereby improving the operation efficiency.

[0040] Specifically, the grid pool 2 in the embodiment is preferably a rotating mechanical grid, which can trap and remove debris in the water through rotating bars or screens. The rotating mechanical grid mainly consists of a driving motor, a transmission mechanism (such as a speed reducer, a chain or a gear, etc.) and rotating bars or screens. When the driving device is started, the bars or screens are rotated through the transmission mechanism. Among them, the diameter, spacing and material parameters of the bars or screens are designed according to the characteristics of the treated water quality and debris.

[0041] In the embodiment, the diameter of the grid in the grid pool 2 is 1.5-9 mm. When the water flow passes through the grid, the debris will be trapped by the bars or screens and attached to their surfaces. With the continuous rotation of the grid, these debris will be brought to one end of the grid and discharged from the grid pool 2 through some means (such as a scraper, a flushing device 9, etc.).

[0042] More preferably, based on the above technical solutions, the biochemical treatment mechanism comprises an anaerobic tank 10, an anoxic tank 11 and an aerobic tank 12 arranged in sequence along the water flow direction, wherein the anoxic tank 11 is reversely communicated with the anaerobic tank 10, the aerobic tank 12 is reversely communicated with the anoxic tank 11, and flow meters and valves are arranged on the pipelines reversely communicated between the anoxic tank 11 and the anaerobic tank 10 and between the aerobic tank 12 and the anoxic tank 11; the grid pool 2 is communicated with the anaerobic tank 10, and the aerobic tank 12 is communicated with the membrane bioreactor 3.

[0043] In the biochemical treatment mechanism of the embodiment, first, in the anaerobic tank 10, the high-molecular difficult-to-degrade organic matter in the sewage is converted into low-molecular easy-to-degrade organic matter through the anaerobic fermentation of microorganisms, such as the stages of hydrolysis, acidification, and hydrogen and acetic acid production. The main principle of the anoxic tank 11 is to provide an anoxic state for the sewage, so that the denitrifying bacteria undergo denitrification, convert the nitrate nitrogen in the water into nitrogen gas, and release it into the atmosphere, while removing part of the biochemical oxygen demand (BOD) and helping to improve the biodegradability of the water body. In addition, the microorganisms in the anoxic tank 11 can also gradually convert non-dissolved organic matter into dissolved state. Finally, the aerobic tank 12 operates under an oxygenated condition, and the aerobic microorganisms use molecular oxygen as an electron acceptor to degrade the organic matter in the wastewater, thereby mineralizing it. The nitrifying bacteria convert the ammonia nitrogen (NH3-N) in the wastewater into nitrite (NO2 - ) and nitrate (NO3 - ). At the same time, the polyphosphorus bacteria fully absorb phosphorus under aerobic conditions and are discharged through the excess sludge.

[0044] In the embodiment, the anoxic tank 11 is reversely connected to the anaerobic tank 10, that is, part of the sludge-water mixture in the anoxic tank 11 can be backflowed to the anaerobic tank 10 to further perform nitrification, and part of the sludge-water mixture in the aerobic tank 12 can be backflowed to the anoxic tank 11 to further perform denitrification.

[0045] The sludge backflow pipeline from the anoxic tank 11 to the anaerobic tank 10 is designed with a regulating electromagnetic valve and a flow meter, and is designed as a chain, so as to facilitate the regulation of flow and meet the process requirements.

[0046] The sludge backflow pipeline from the aerobic tank 12 to the anoxic tank 11 is designed with a regulating electromagnetic valve and a flow meter, and is designed as a self-control chain, so as to facilitate the regulation of flow and meet the process requirements.

[0047] Further preferably, on the basis of the above technical solution, the sludge discharge port of the membrane bioreactor 3 is reversely connected to the aerobic tank 12, and a flow meter and a valve are arranged on the connected pipeline.

[0048] After the effluent from the aerobic tank 12 enters the membrane bioreactor 3 (MBR), it first reacts with the microorganisms in the tank. These microorganisms use the organic matter in the water for growth and reproduction, while degrading the organic matter and converting it into harmless substances. Under aerobic conditions, the activity of microorganisms is high, which can efficiently degrade organic matter and remove pollutants such as ammonia nitrogen in water.

[0049] The water treated by the biological treatment is filtered by the flat sheet membrane module in the membrane bioreactor 3. The micro-porous structure of the flat sheet membrane module can intercept the suspended solids, microorganisms and macromolecular organic matters in the water, and only allows clean water molecules to pass through. Therefore, the produced water can be produced through the gap in the middle of the flat sheet membrane, and part of the sludge in the MBR tank is returned to the aerobic tank 12 through the backflow pipeline to maintain the concentration and activity of the microorganisms in the biological reaction unit. Another part of the sludge is discharged out of the system through the discharge pipeline to reduce the amount of sludge in the system and prevent excessive accumulation of sludge.

[0050] On the basis of the above technical solutions, more preferably, a high-pressure water pump, a flow meter and a valve are arranged on the pipeline through which the membrane bioreactor 3 communicates with the front chamber 5, and a flow meter and a valve are arranged on the pipeline through which the rear chamber 7 reversely communicates with the front chamber 5.

[0051] When the wastewater treated by the membrane bioreactor 3 is pressurized into the front chamber 5 of the reverse osmosis system, it is first uniformly distributed into the multiple tube bundles of the reverse osmosis membrane chamber 6, which contain reverse osmosis membranes. A thin liquid film is formed between the outer wall of the membrane and the inner wall of the tube bundle. Under the action of the high-pressure pump, the raw water is forced to pass through the liquid film, and the water molecules pass through the membrane wall into the outer wall of the tube bundle (i.e. the produced water side) due to the osmotic pressure, while the salts, organic matter and other impurities are intercepted in the tube bundle (i.e. the concentrated water side).

[0052] The produced water flows out of the outer wall of the tube bundle, enters the rear chamber 7 of the reverse osmosis mechanism 4, and then undergoes subsequent treatment (such as disinfection, pH adjustment, etc.) to become qualified produced water. The concentrated water in the tube cavity is treated by a specific backflow system, part of which is backflowed to the front chamber 5 by the high-pressure pump, mixed with new raw water and then subjected to reverse osmosis treatment again; another part of the concentrated water is backflowed to the sand and air flotation tank 1 for further treatment.

[0053] In this embodiment, the design of the front cavity is conducive to uniformly distributing the raw water into multiple tube bundles, ensuring that each tube bundle can obtain the same amount of water and pressure, thereby improving the utilization rate of the reverse osmosis membrane and the efficiency of the produced water. The design of the rear cavity allows the effluent of multiple tube bundles to enter the rear chamber 7 for mixing, thereby achieving homogenization. Since there may be slight differences (such as salt concentration, water temperature, etc.) in the effluent of each tube bundle, mixing can reduce these differences and improve the uniformity and stability of the produced water. The concentrated water in the rear chamber 7 is backflowed by the high-pressure pump, part of which is backflowed to the front of the membrane to mix with new raw water, and another part is backflowed to the sand and air flotation tank 1. This backflow system not only improves the utilization efficiency of the reverse osmosis membrane, but also automatically adjusts the backflow ratio according to the water quality of the effluent, ensuring the stability and reliability of the produced water quality. At the same time, the valves and flow meters designed on the main pipe and the flow meters arranged on the membrane backflow system can monitor and control the backflow rate in real time, ensuring the stable operation of the system.

[0054] Finally, it should be noted that: the above embodiments are used to illustrate the technical solutions of the present application, but not limited to them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A comprehensive sewage treatment system, characterized by, The aeration grit chamber (1), the grid chamber (2), the biochemical treatment mechanism, the membrane bioreactor (3) and the reverse osmosis mechanism (4) are sequentially connected end to end, The reverse osmosis mechanism (4) comprises a shell and a front chamber (5), a reverse osmosis membrane chamber (6) and a rear chamber (7) which are sequentially arranged in the shell and sequentially communicated, the membrane bioreactor (3) is communicated with the front chamber (5), and the rear chamber (7) is reversely communicated with the aeration grit chamber (1) and the front chamber (5).

2. The sewage integrated treatment system according to claim 1, characterized in that, The aeration grit chamber (1) comprises a first cylinder, a conical barrel and a second cylinder which are sequentially arranged from top to bottom, The first cylinder is connected with the large opening end of the conical barrel, the second cylinder is connected with the small opening end of the conical barrel, a water guide groove is arranged on the inner side wall of the first cylinder, and a microporous aeration pipe is arranged on the inner side wall of the conical barrel.

3. The sewage integrated treatment system according to claim 2, characterized in that, The inner diameter ratio of the first cylinder, the conical barrel and the second cylinder is 4:(2-2.5):

1.

4. The sewage integrated treatment system according to claim 2, characterized in that, The first cylinder of the aeration grit chamber (1) is provided with a stirrer (8).

5. The sewage integrated treatment system according to claim 1, characterized in that, The upper portion of the grid chamber (2) is provided with a flushing device (9).

6. The sewage integrated treatment system according to claim 1, characterized in that, The diameter of the grid in the grid chamber (2) is 1.5-9mm.

7. The sewage integrated treatment system according to claim 1, characterized in that, The biochemical treatment mechanism comprises an anaerobic tank (10), an anoxic tank (11) and an aerobic tank (12) which are sequentially arranged along the water flow direction, The anoxic tank (11) is reversely communicated with the anaerobic tank (10), the aerobic tank (12) is reversely communicated with the anoxic tank (11), and the pipeline reversely communicated with the anaerobic tank (10) and the pipeline reversely communicated with the anoxic tank (11) are both provided with a flow meter and a valve; The grid chamber (2) is communicated with the anaerobic tank (10), and the aerobic tank (12) is communicated with the membrane bioreactor (3).

8. The system according to claim 7, wherein The sludge discharge port of the membrane bioreactor (3) is reversely communicated with the aerobic tank (12), and the pipeline is provided with a flow meter and a valve.

9. The sewage integrated treatment system according to claim 1, characterized in that, The pipeline communicated with the front chamber (5) of the membrane bioreactor (3) is provided with a high-pressure water pump, a flow meter and a valve.

10. The wastewater integrated treatment system of claim 1, wherein, The pipeline reversely communicated with the front chamber (5) of the rear chamber (7) is provided with a flow meter and a valve.

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