CN213327183U - Public toilet sewage integrated treatment system - Google Patents

Abstract

The utility model discloses a public latrine sewage integration processing system, it includes the septic tank that communicates with each other in proper order, the equalizing basin, biochemical treatment device and clean water basin, biochemical treatment device combines together through multistage AO and MBR reactor, multistage AO appears in turn, make nitrify, oxygen deficiency denitrification dephosphorization is gone on in turn, realize synchronous nitrogen and phosphorus removal, guarantee that the organic matter in the public latrine sewage can be decomposed completely, later combine MBR reactor, live sludge and the macromolecule organic matter in the public latrine sewage are withheld, purification treatment process hierarchy advances, evolution efficiency improves greatly, the nitrogen and phosphorus removal effect of sewage has been reinforceed, high-efficient solid-liquid separation has been realized, the effluent quality is high-quality and stable, common biological treatment process has been solved, the mud inflation phenomenon appears easily, make active sludge run off, go out the problem that water is not up to standard, the surplus sludge volume is few simultaneously, thereby reducing the treatment cost of the sludge and reaching the standard of reclaimed water reuse after treatment.

Description

Public toilet sewage integrated treatment system

The technical field is as follows:

the utility model relates to a sewage treatment field especially relates to a public latrine sewage integration processing system.

Background art:

in recent years, with the rapid development of economy and society of China, the living standard of people is remarkably improved, a large amount of public toilets are built to bring convenience to daily life of people, and meanwhile, a large amount of excrement and urine sewage generated when the public toilets cannot enter a municipal pipe network is discharged into an external environment to cause serious pollution, so that how to conveniently and efficiently treat public toilet excrement and urine sewage, such as villages and small towns, scenic spots, expressway service areas and the like, which cannot be collected by the pipe network becomes an urgent problem to be solved.

The existing sewage treatment equipment and process comprises the following steps: A2O (anaerobic-anoxic-aerobic activated sludge process) biological nitrogen and phosphorus removal process is the integration of traditional activated sludge process, biological nitrification and denitrification process and biological phosphorus removal process. The anaerobic tank is used for degrading organic matters and releasing phosphorus by using anaerobic bacteria under an anaerobic condition; the nitrification liquid flows back to the anoxic tank, and the facultative bacteria degrade organic matters under the anoxic condition and perform denitrification of nitrate simultaneously, so that total nitrogen is removed; in the aerobic tank, aerobic bacteria thoroughly degrade organic matters, ammonia nitrogen and absorb phosphorus under aerobic conditions; the process basically removes pollutant substances by utilizing the action of microorganisms, so that a secondary sedimentation tank is connected after biochemical treatment for sludge-water separation, and the secondary sedimentation tank naturally sediments the microorganisms in the secondary sedimentation tank by utilizing the action of gravity; on one hand, the secondary sedimentation tank continuously feeds water and continuously discharges water, and the flowing of the water brings certain stirring, so that not only can the natural sedimentation of the sludge be influenced, but also the settled sludge at the bottom of the secondary sedimentation tank can be expanded due to the stirring of the water flow, and the suspended matters in the discharged water are increased; on the other hand, the sludge precipitated at the bottom of the secondary sedimentation tank can be subjected to denitrification under the condition of long-time oxygen deficiency, bubbles are generated in water, and the sludge at the bottom is driven to float upwards, so that suspended matters in the effluent of the system are increased, and the water quality does not reach the standard. Therefore, the utility model has the advantages of high efficiency solid-liquid separation and high and stable quality of the discharged water.

The utility model has the following contents:

the technical solution of the utility model is as follows:

the utility model aims at solving the existing problem and providing a public lavatory sewage integration processing system, sewage discharge to reach standard when not only having reinforceed the nitrogen and phosphorus removal effect of sewage has still significantly reduced area.

The utility model provides a public latrine sewage integration processing system, its is including septic tank and equalizing basin, biochemical treatment device and the clean water basin that is linked together in proper order, be provided with the grid device in the septic tank, biochemical treatment device is including biochemical reaction container, biochemical reaction container separates into the one-level anaerobism pond of mutual intercommunication in proper order through the division board, one-level oxygen deficiency pond, one-level aerobic tank, second grade oxygen deficiency pond, second grade aerobic tank and sedimentation tank, be provided with the MBR reactor in the second grade aerobic tank, one-level anaerobic tank with the one-level oxygen deficiency pond is upper portion intercommunication, one-level oxygen deficiency pond with the one-level aerobic tank is bottom intercommunication, one-level aerobic tank with the second grade oxygen deficiency pond is upper portion intercommunication, second grade oxygen deficiency pond with the second grade aerobic tank is bottom intercommunication.

As preferred, the PAC inlet of throwing has been seted up to the end of intaking in one-level anaerobism pond, the PAC inlet of throwing has been connected with PAC charge device through the medicament tube coupling, alkali lye inlet has been seted up to one-level oxygen deficiency pond top, alkali lye inlet has been connected with alkali lye charge device through the medicament tube coupling, the carbon source inlet has been seted up to second grade oxygen deficiency pond top, the carbon source inlet has been connected with carbon source charge device through the medicament tube coupling, be provided with the liquid reflux pump of nitrifying in the one-level aerobic tank, nitrify the liquid reflux pump pass through the sewage pipeline with one-level anaerobism pond is linked together, be provided with the mud backwash pump in the second grade aerobic tank, the mud.

Preferably, the biochemical reaction container is a cylindrical container, a cylindrical support column is formed in the center of the biochemical reaction container, a first U-shaped clamping groove and a second U-shaped clamping groove which correspond to each other are respectively fixed on the inner wall of the biochemical reaction container and the outer wall of the support column, the number of the first U-shaped clamping groove and the number of the second U-shaped clamping groove are 5 or more than 5, partition plates are detachably inserted into the first U-shaped clamping groove and the second U-shaped clamping groove, each partition plate is a cuboid, and a through hole is formed in the edge, close to the width edge of one side of the partition plate, of the partition plate.

Preferably, the division board is including first division board and second division board, first division board is the lath of cuboid, the second division board is the lath of cuboid, the through-hole has been seted up to the edge that the second division board is close to its one side width limit.

Preferably, a biochemical water inlet is formed in the first-stage anaerobic tank above the side wall of the biochemical reaction container, and a biochemical water outlet is formed in the second-stage aerobic tank above the side wall of the biochemical reaction container.

Preferably, the grid device is a hollow cylinder screen, a grid water inlet is formed in the side wall of the grid device far away from the bottom of the grid device, a guide plate is formed below the grid water inlet and located on the inner side wall of the grid device, the guide plate extends towards the bottom of the grid device in a spiral rotating mode from the grid water inlet, conical needling bulges are densely distributed on the upper surface of the guide plate, and a handle which is matched with a crane and is convenient to take out is fixed at the top end of the grid device.

Preferably, the diameter of the mesh of the grid device is 15mm-25 mm.

Preferably, the primary aerobic tank, the secondary anoxic tank and the secondary aerobic tank are internally provided with aeration devices, and the aeration devices are connected with an air blower.

Preferably, a disinfection device is arranged in the clean water tank, and the disinfection device can be an integrated ultraviolet disinfector or a flow type ultraviolet disinfector.

As preferred, the clean water basin is including clear water inlet and clear water delivery port, the clear water inlet with biochemical delivery port passes through biochemical outlet conduit and connects, be provided with first MBR suction pump on the biochemical outlet conduit, first MBR suction pump is kept away from biochemical treatment device's one end through the anti-water wash pipe way with the clear water delivery port is linked together, be provided with second MBR suction pump on the biochemical outlet conduit, second MBR suction pump is kept away from biochemical treatment device's one end is linked together through anti-water wash pipe way and membrane belt cleaning device.

The beneficial effects of the utility model reside in that:

1. the utility model discloses a public latrine sewage integration processing system, biochemical treatment device is including the one-level anaerobism pond of mutual intercommunication, one-level oxygen deficiency pond, one-level good oxygen pond, second grade oxygen deficiency pond and second grade good oxygen pond, be provided with the RMB generator in the second grade good oxygen pond, through multistage AO and MBR reactor combination, multistage AO appears in turn, make nitrify, oxygen deficiency denitrification dephosphorization is gone on in turn, realize synchronous nitrogen and phosphorus removal, guarantee that the organic matter in the public latrine sewage can be decomposed completely, later combine MBR reactor, live sludge and the macromolecular organic matter in the public latrine sewage are withheld, purification treatment process hierarchy advances, evolution efficiency improves greatly, the nitrogen and phosphorus removal effect of sewage has been reinforceed, the high efficiency has realized solid-liquid separation, the effluent quality of water is high-quality stable, common biological treatment process has been solved, the mud inflation phenomenon appears easily, the method has the advantages that the activated sludge is lost, the effluent is not up to standard, and the amount of residual sludge is small, so that the treatment cost of the sludge is reduced, the treated sludge can reach the standard of reclaimed water reuse, can be used for landscape water and agricultural irrigation, not only solves the problem of environmental pollution caused by public toilet sewage, but also realizes the cyclic utilization of water resources.

2. The utility model discloses a public latrine sewage integration processing system, its biochemical treatment device arrange the MBR reactor in second grade aerobic tank, through the water after good oxygen aeration and biological treatment, go out water quality of water high-quality stable, and under aeration equipment's effect, the organic matter of air one side decomposition aquatic of effluvium, the liquid that the bubble had in addition produces parallel flow with the membrane surface for activated sludge or the suspended solid in the mixed liquid can not adhere at the membrane surface.

3. The utility model discloses a public latrine sewage integrated processing system, which comprises a biochemical treatment device, wherein the biochemical treatment device comprises a biochemical reaction container, the biochemical treatment device is divided by a division plate through the biochemical reaction container, the division plate comprises a first division plate and a second division plate, a user can divide the biochemical treatment device into required areas through different combination modes and quantities of the first division plate and the second division plate, different adjustments can be made according to actual needs, the areas can be increased or reduced at any time, the applicability is stronger, the operation is simple and convenient, the flexibility is strong, the market promotion is facilitated, and meanwhile, the biochemical reaction container is cylindrical, compared with the combination mode that a plurality of biochemical treatment unit tanks are connected in series side by side, the biochemical reaction container of the utility model can greatly reduce the occupied area, the process equipment is centralized, the operation and management are convenient, and the automatic control is easy to realize.

4. The utility model discloses a public latrine sewage integration processing system, it is including the grid device, the grid device is protruding including guide plate and the toper acupuncture of shaping on the guide plate, the guide plate is used for reducing the velocity of flow of intaking, plays the effect of buffering, avoids the water yield fluctuation too big, influences the normal clear of follow-up unit, and the toper acupuncture arch is used for twining tiny filiform materials such as hair in the sewage, simultaneously the excrement and urine of big granule with the protruding frictional in-process of toper acupuncture is slowly decomposed into granular excrement and urine, the utility model discloses a grid device can intercept the great suspended solid in the public latrine sewage, filiform materials such as hairline to guarantee the elevator pump and reduce the load pressure of follow-up unit.

Drawings

FIG. 1 is a schematic structural view of an integrated treatment system for public lavatory sewage according to the present invention;

FIG. 2 is a process flow chart of the public toilet sewage integrated treatment system of the utility model;

FIG. 3 is a schematic structural view of a biochemical reaction vessel according to the present invention;

fig. 4 is a schematic diagram of a second partition structure of the present invention;

FIG. 5 is a schematic structural view of the biochemical treatment apparatus of the present invention;

FIG. 6 is a schematic structural view of the grille arrangement of the present invention;

fig. 7 is a sectional view of the grille device of the present invention.

In the figure: the device comprises a septic tank 1, an adjusting tank 2, a biochemical treatment device 3, a primary anaerobic tank 31, a primary anoxic tank 32, a primary aerobic tank 33, a secondary anoxic tank 34, a secondary aerobic tank 35, an MBR generator, a clean water tank 4, a biochemical reaction container 5, a support column 51, a first U-shaped clamping groove 52, a second U-shaped clamping groove 53, a biochemical water inlet 54, a biochemical water outlet 55, a grating device 7, a nitrifying liquid reflux pump 81, a PAC dosing device 91, an alkali liquor dosing device 92, a carbon source dosing device 93, a membrane cleaning device 94, a natural water tank 83, an aeration device 96 and an air blower 98.

The specific implementation mode is as follows:

the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "disposed," "mounted," "connected," and "fixed" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; may be a mechanical connection; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

An integrated treatment system for public toilet sewage comprises a septic tank 1, an adjusting tank 2, a biochemical treatment device 3 and a clean water tank 4 which are sequentially communicated.

Specifically, a grating device 7 is arranged in the septic tank 1, and the septic tank 1 comprises a public toilet sewage inlet and a public toilet sewage outlet;

specifically, the adjusting tank 2 comprises an adjusting sewage inlet which is communicated with the public toilet sewage outlet, a lifting pump is arranged in the adjusting tank 2, and the lifting pump is used for connecting and pumping the sewage in the adjusting tank 2 into the biochemical treatment device 3 through a sewage pipeline;

specifically, the biochemical treatment device 3 comprises a biochemical reaction container 5, the biochemical reaction container 5 is sequentially separated into a first-stage anaerobic tank 31, a first-stage anoxic tank 32, a first-stage aerobic tank 33, a second-stage anoxic tank 34 and a second-stage aerobic tank 35 which are communicated with each other by a partition plate 6, an MBR generator 36 is arranged in the second-stage aerobic tank 35, a biochemical water inlet 54 is arranged in the first-stage anaerobic tank 31 above the side wall of the biochemical reaction container 5, a biochemical water outlet 55 is arranged in the second-stage aerobic tank 35 above the side wall of the biochemical reaction container 5, the biochemical water inlet 54 is connected with a lift pump in the regulating tank 2 through a sewage pipeline, the biochemical reaction container 5 is a cylindrical container, a cylindrical support column 51 is formed in the center of the biochemical reaction container, a first U-shaped clamping groove 52 and a second U-shaped clamping groove 53 which are mutually corresponding are respectively fixed on the inner wall of the biochemical reaction container 5, first U type draw-in groove 52 with the quantity of second U type draw-in groove 53 is more than 5 or 5, can dismantle the plug bush has division board 6 in first U type draw-in groove 52 and the second U type draw-in groove 53, division board 6 is including first division board 61 and second division board 62, first division board 61 is the lath of cuboid, second division board 62 is close to the edge on its one side width limit and has seted up through-hole 63, during the concrete operation, selects a first division board 61, and four second division boards 62 insert in proper order in first U type draw-in groove 52 and second U type draw-in groove 53, will biochemical reaction container 5 separates into one-level anaerobism pond 31 in proper order, one-level oxygen deficiency pond 32, one-level good oxygen pond 33, second grade oxygen deficiency pond 34 and second grade good oxygen pond 35, just biochemical water inlet 54 is located in the one-level anaerobism pond 31, biochemical delivery port 55 is located in the second grade good oxygen pond 35, the biochemical water inlet 54 is higher than the through hole 63, the biochemical water outlet 55 is lower than the through hole 63, the through hole 63 of the second partition plate 62 between the primary anaerobic tank 31 and the primary anoxic tank 32 is located at the opening end of the biochemical reaction container 5, the through hole 63 of the second partition plate 62 between the primary anaerobic tank 32 and the primary aerobic tank 33 is close to the bottom surface of the biochemical reaction container 5, the through hole 63 of the second partition plate 62 between the primary aerobic tank 33 and the secondary anoxic tank 34 is located at the opening end of the biochemical reaction container 5, the through hole 63 of the second partition plate 62 between the secondary anoxic tank 34 and the secondary aerobic tank 35 is close to the bottom surface of the biochemical reaction container 5, so that the primary anaerobic tank 31 is communicated with the primary anoxic tank 32 at the upper part, and the primary anoxic tank 32 is communicated with the primary aerobic tank 33 at the bottom part, the primary aerobic tank 33 is communicated with the secondary anoxic tank 34 at the upper part, and the secondary anoxic tank 34 is communicated with the secondary aerobic tank 35 at the bottom part. The user can make different adjustments according to actual need with the biochemical treatment device isolation required region through the different compound mode of first division board and second division board and quantity, can increase at any time or reduce the region, and its suitability is stronger, and easy operation is convenient, and the flexibility is strong, more does benefit to marketing, simultaneously biochemical reaction container is the cylinder form, compares in the compound mode that current a plurality of biochemical treatment unit ponds were established ties side by side, the utility model discloses a biochemical reaction container, area that can significantly reduce, process units concentrate, and operation management is convenient, easily realizes automatic control.

Specifically, a PAC inlet is arranged at the water inlet end of the primary anaerobic tank 31, the PAC inlet is connected with a PAC dosing device 91 through a medicament pipeline, an alkali liquor feeding port is arranged above the first-stage anoxic tank 32, the alkali liquor feeding port is connected with an alkali liquor dosing device 92 through a medicament pipeline, a carbon source feeding port is arranged above the secondary anoxic tank 34, the carbon source feeding port is connected with a carbon source dosing device 93 through a medicament pipeline, a nitrifying liquid reflux pump 81 is arranged in the first-stage aerobic tank 33, the nitrifying liquid reflux pump 81 is communicated with the first-stage anaerobic tank 31 through a sewage pipeline, a sludge reflux pump 82 is arranged in the secondary aerobic tank 35 and the MBR membrane tank, the sludge reflux pump 82 is communicated with the adjusting tank 2 through a sludge pipeline, the PAC dosing device 91, the alkali liquor dosing device 92 and the carbon source dosing device 93 are all communicated with the natural water tank 83 through water pipes.

Specifically, a disinfection device is arranged in the clean water tank 4, and the disinfection device can be an integrated ultraviolet disinfector or a flow type ultraviolet disinfector and is used for disinfecting the water in the clean water tank 4.

Specifically, the MBR reactor 36 is connected with a membrane cleaning device 99 through an MBR suction pump 41 and a backwash pipeline, and the membrane cleaning device 99 is communicated with the natural water tank 83.

Specifically, the primary aerobic tank 33, the secondary anoxic tank 34 and the secondary aerobic tank 35 are provided with aeration devices 96 therein, the aeration devices 96 are connected with an air blower 98, the aeration devices 96 may be tubular aerators or disc aerators, the aeration devices 96 continuously bring air into the tank and release the air into micro-bubbles, so as to improve oxygen utilization rate, strengthen oxidation of organic matters and ammonia nitrogen, promote water flow to flow in the horizontal direction and prevent activated sludge from precipitating, and the aeration amount in the secondary anoxic tank 34 is small, so that the sludge in the tank is not precipitated. The primary aerobic tank 33 and the secondary aerobic tank 35 are provided with an air pump and a rotor flow meter for aerating the primary aerobic tank 33 and the secondary aerobic tank 35 and adjusting the aeration amount.

Specifically, clear water tank 4 is including clear water inlet and clear water delivery port, the clear water inlet with biochemical delivery port 55 passes through biochemical outlet conduit and connects, biochemical outlet conduit is last to be provided with first MBR suction pump 41, first MBR suction pump 41 is kept away from biochemical treatment device 3's one end through the back-flush pipeline with the clear water delivery port is linked together, biochemical outlet conduit is last to be provided with second MBR suction pump 42, second MBR suction pump 42 keeps away from biochemical treatment device 3's one end is linked together through back-flush pipeline and membrane belt cleaning device 94, its water inlet end of membrane belt cleaning device 94 with natural water tank 83 is linked together, the utility model discloses will be used for washing the MBR reactor through back-flush pipeline and the effect of first MBR suction pump 41 with the water up to standard after biochemical treatment device 3 handles, when the water level in the clean water tank 4 does not reach the corresponding water level, the membrane cleaning device 94 is started to clean the MBR reactor.

Specifically, the treated clean water in the secondary aerobic tank 35 flows into the clean water tank 4 under the action of negative pressure.

Specifically, the grille device 7 is a hollow cylindrical screen mesh, a grille water inlet 71 is formed in the side wall of the grille device 7 far away from the bottom of the grille device 7, the grille water inlet 71 is communicated with the public toilet sewage inlet, a guide plate 72 is formed below the grille water inlet 71 on the inner side wall of the grille device 7, the guide plate 72 extends from the grille water inlet 71 to the bottom of the grille device 7 in a spiral rotating mode, the guide plate 72 is used for reducing the flow rate of inlet water and playing a role in buffering to avoid the influence of too large fluctuation of water amount on the normal operation of subsequent units, conical needling protrusions 75 are densely distributed on the upper surface of the guide plate 72, the public toilet sewage flows in from the grille water inlet 71 and flows down along the guide plate 72, and meanwhile the conical needling protrusions 75 are used for winding fine filamentous substances such as hair in the sewage, simultaneously the excrement and urine of big granule with the protruding 75 frictional in-process of toper acupuncture is slowly decomposed into the excrement and urine of little graininess, and its top of grid device 7 is fixed with the handle 76 of conveniently taking out with the crane cooperation to the periodic processing in later stage of being convenient for, the diameter of its sieve mesh of grid device 7 is 15mm-25mm, can intercept the great suspended solid in the public latrine sewage, and filiform material such as hairline intercepts to guarantee the elevator pump and reduce the load pressure of follow-up unit.

Specifically, a public latrine sewage integration processing system passes through main control unit control, PAC charge device 91, alkali lye charge device 92, carbon source charge device 93, membrane belt cleaning device 94, air-blower 98 and the switch board of controlling a public latrine sewage integration processing system all are located the equipment room, equipment centralized management, and operation management is convenient, easily realizes automatic control.

An integrated treatment system for public toilet sewage comprises the following process steps:

s1: septic tank, in public latrine sewage gets into grid device 7, can intercept the great suspended solid in the public latrine sewage, filamentous material such as hair intercepts to guarantee the elevator pump and reduce the load pressure of follow-up unit, through its insoluble COD of public latrine sewage after grid device 7 filters, greatly reduced such as SS, the further processing of the follow-up unit of being convenient for. The grid slag intercepted by the grid device 7 is periodically cleaned and transported out manually and then is safely treated;

s2: the adjusting tank is used for adjusting and homogenizing the water quantity and the water quality and ensuring the normal operation of subsequent biochemical treatment, and sludge precipitated in the adjusting tank 2 is periodically sucked and transported out to enter the sludge concentration tank 10;

s3: the primary anaerobic tank 31 is used for pumping the public toilet sewage in the regulating tank 2 in the step S2 into the primary anaerobic tank 31 through a lift pump, degrading organic matters and releasing phosphorus by using anaerobic bacteria under an anaerobic condition, and simultaneously adding a PAC solution for flocculation and sedimentation;

s4: the first-stage anoxic tank 32, the public toilet sewage treated by the first-stage anaerobic tank 31 in the step S3 overflows from the through hole 63 at the opening and enters the first-stage anoxic tank 32, the facultative anaerobe degrades organic matters under an anoxic condition and simultaneously performs denitrification of nitrate, so that total nitrogen is removed, and meanwhile, an alkaline solution is added for neutralizing acidic substances in water, so that the water is weakly alkaline, the growth of microorganisms is facilitated, and the efficiency of subsequent aerobic reaction is improved;

s5: the public toilet sewage treated by the first-stage anoxic tank 32 in the step S4 enters the first-stage aerobic tank 33 from the through hole 63 at the bottom, aerobic bacteria thoroughly degrade organic matters, ammonia nitrogen and absorb phosphorus under aerobic conditions, and nitrified liquid is pumped into the first-stage anaerobic tank 31 through a digestive liquid reflux pump;

s6: the second-stage anoxic tank 34, the public toilet sewage treated by the first-stage aerobic tank 33 in the step S5 overflows from the through hole 63 at the opening and enters the second-stage anoxic tank 34, and further facultative anaerobes degrade organic matters under an anoxic condition and simultaneously perform denitrification of nitrate, so that total nitrogen is removed, and simultaneously a carbon source is added, so that the second-stage anoxic tank 34 has good dynamic performance and strong impact load resistance, the concentration of nitric acid nitrogen and total nitrogen in system effluent can be greatly reduced, and the operation load of the biochemical treatment device 3 is remarkably improved.

S7: the second-stage aerobic tank 35+ MBR reactor 36, the public toilet sewage treated by the second-stage anoxic tank 34 in the step S6 enters the second-stage aerobic tank 35 from the through hole 63 at the bottom, the water after aerobic aeration and biological treatment has high and stable quality and is recycled water, and the air blown out under the action of the aeration device decomposes organic matters in the water on the one hand, and in addition, liquid carried by bubbles flows parallel to the membrane surface, so that the active sludge or suspended matters in the mixed liquid can not be adhered to the membrane surface; sludge in the tank is pumped into the adjusting tank 2 by a sludge reflux pump at regular intervals;

s8: the clean water tank 4, the reclaimed water reuse water after the treatment of step S7 is pressed into the clean water tank 4 through negative pressure, and is disinfected and sterilized through the disinfection device, and the reclaimed water reuse water is standard water and can be used for landscape water and agricultural irrigation, thereby not only solving the problem of environmental pollution caused by public toilet sewage, but also realizing the cyclic utilization of water resources.

The public toilet sewage integrated treatment system has the advantages that:

firstly, the method comprises the following steps: the sewage treatment device comprises a first-level anaerobic tank 31, a first-level anoxic tank 32, a first-level aerobic tank 33, a second-level anoxic tank 34 and a second-level aerobic tank 35 which are communicated with each other, wherein an RMB generator 36 is arranged in the second-level aerobic tank 35, and is combined with an MBR (membrane bioreactor) through multi-level AO, and the multi-level AO alternately appears to ensure that nitrification and anoxic denitrification dephosphorization are alternately performed, so as to realize synchronous denitrification and dephosphorization, ensure that organic matters in the public toilet sewage can be completely decomposed, and then the MBR is combined to retain active sludge and macromolecular organic matters in the public toilet sewage, so that the purification treatment process is hierarchical, the evolution efficiency is greatly improved, the denitrification and dephosphorization effects of the sewage are enhanced, the solid-liquid separation is efficiently realized, the effluent quality is high and stable, the common biological treatment process is solved, the sludge bulking phenomenon easily occurs, the active sludge is lost, the effluent is, therefore, the treatment cost of the sludge is reduced, the treated sludge can reach the standard of reclaimed water reuse, the sludge can be used for landscape water and agricultural irrigation, the problem of environmental pollution caused by public toilet sewage is solved, and the cyclic utilization of water resources is realized.

Secondly, the method comprises the following steps: the biochemical treatment device arranges the MBR reactor in a secondary aerobic tank, the effluent quality of the water after aerobic aeration and biological treatment is high and stable, and the air blown out under the action of the aeration device decomposes organic matters in the water on one hand, and in addition, liquid carried by bubbles and the surface of the membrane generate parallel flow, so that activated sludge or suspended matters in the mixed liquid can not be adhered to the surface of the membrane.

Thirdly, the method comprises the following steps: the maintenance and management are convenient, the sludge bulking phenomenon is easy to occur in the common biological treatment process, the activated sludge is lost, and the effluent does not reach the standard. The MBR system adopts an active sludge membrane separation technology, and the sludge expansion has no influence on the normal operation of the system. The ordinary biological treatment process needs to partially return the sludge in the subsequent sedimentation tank to ensure that sufficient biomass exists in the biochemical tank, and the high or low return ratio of the sludge has influence on the effluent. The MBR system does not have the problems, and the operation management is very simple.

Fourthly: the biological phase is rich, the quality of treated water is stable, even if the membrane separation unit used by the system can not pass through fine particles, various new strains with good activity and poor precipitation performance and nitrobacteria with slow proliferation speed and long generation time can be reserved, the biological phase is extremely rich, the acclimatization process is greatly shortened, the treatment efficiency is high, the organic load impact resistance is strong, and the treated water quality is stable for a long time.

Fifth, the method comprises the following steps: the membrane separation unit does not need to be cleaned frequently, the MBR membrane separation active sludge adopts a cross filtration method, an aerator is arranged at the lower part of the MBR membrane separation unit, blown air decomposes organic matters in water on the one hand, and liquid carried by bubbles flows in parallel with the surface of the membrane, so that the active sludge or suspended matters in the mixed liquid can not be adhered to the surface of the membrane. Moreover, the inner and outer surfaces of the high-quality MBR membrane are very smooth, and sludge is not easy to adhere.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.

Claims (10)

1. The utility model provides a public latrine sewage integration processing system, its is including septic tank (1) that are linked together in proper order, equalizing basin (2), biochemical treatment device (3) and clean water basin (4), its characterized in that: be provided with grid device (7) in septic tank (1), biochemical treatment device (3) are including biochemical reaction container (5), biochemical reaction container (5) are separated into one-level anaerobism pond (31) of mutual intercommunication in proper order through division board (6), one-level oxygen deficiency pond (32), one-level good oxygen pond (33), second grade oxygen deficiency pond (34) and second grade good oxygen pond (35), be provided with MBR generator (36) in second grade good oxygen pond (35), one-level anaerobism pond (31) with one-level oxygen deficiency pond (32) are the upper portion intercommunication, one-level oxygen deficiency pond (32) with one-level good oxygen pond (33) are the bottom intercommunication, one-level good oxygen pond (33) with second grade oxygen deficiency pond (34) are the upper portion intercommunication, second grade oxygen deficiency pond (34) with second grade good oxygen pond (35) are the bottom intercommunication.

2. The public toilet sewage integrated treatment system of claim 1, wherein: the utility model discloses a sewage treatment device, including one-level anaerobism pond (31), PAC inlet port has been seted up to the end of intaking in one-level anaerobism pond (31), PAC inlet port has been connected with PAC charge device (91) through the medicament pipe line, alkali lye inlet port has been seted up to one-level oxygen deficiency pond (32) top, alkali lye inlet port has been connected with alkali lye charge device (92) through the medicament pipe line, carbon source inlet port has been seted up to second grade oxygen deficiency pond (34) top and has been thrown into the mouth, carbon source inlet port has carbon source charge device (93) through the medicament pipe connection, be provided with in one-level aerobic pond (33) and nitrify liquid backwash pump (81), nitrify liquid backwash pump (81) through the sewage pipeline with one.

3. The public toilet sewage integrated treatment system of claim 1, wherein: the biochemical reaction container (5) is a cylindrical container, a cylindrical support column (51) is formed in the center of the biochemical reaction container, a first U-shaped clamping groove (52) and a second U-shaped clamping groove (53) which correspond to each other are respectively fixed on the inner wall of the biochemical reaction container (5) and the outer wall of the support column (51), the number of the first U-shaped clamping groove (52) and the number of the second U-shaped clamping groove (53) are respectively 5 or more than 5, and a partition plate (6) is detachably inserted and sleeved in the first U-shaped clamping groove (52) and the second U-shaped clamping groove (53).

4. The public toilet sewage integrated treatment system of claim 3, wherein: the partition plate (6) comprises a first partition plate (61) and a second partition plate (62), the first partition plate (61) is a strip of a cuboid, the second partition plate (62) is a strip of a cuboid, and a through hole (63) is formed in the edge, close to the width edge of one side of the edge, of the second partition plate (62).

5. The public toilet sewage integrated treatment system of claim 1, wherein: a biochemical water inlet (54) is formed in the first-stage anaerobic tank (31) above the side wall of the biochemical reaction container (5), and a biochemical water outlet (55) is formed in the second-stage aerobic tank (35) above the side wall of the biochemical reaction container (5).

6. The public toilet sewage integrated treatment system of claim 1, wherein: grid device (7) are the hollow circular cylinder screen cloth, keep away from its bottom department on the lateral wall of grid device (7) and seted up grid water inlet (71), be located on grid device (7) inside wall grid water inlet (71) below shaping has guide plate (72), guide plate (72) certainly grid water inlet (71) department to grid device (7) bottom direction spiral rotation extends, the dense toper acupuncture arch (75) that has of guide plate (72) upper surface, its top of grid device (7) is fixed with handle (76) that conveniently takes out with the crane cooperation.

7. The public toilet sewage integrated treatment system of claim 1, wherein: a public lavatory sewage integrated treatment system according to claim 5, wherein the diameter of the screen hole of said grille installation (7) is 15mm-25 mm.

8. The public toilet sewage integrated treatment system of claim 1, wherein: aeration devices (96) are arranged in the primary aerobic tank (33), the primary anoxic tank (32), the secondary anoxic tank (34) and the secondary aerobic tank (35), and the aeration devices (96) are connected with an air blower (98).

9. The public toilet sewage integrated treatment system of claim 1, wherein: and a disinfection device is arranged in the clean water tank (4), and the disinfection device is an integrated ultraviolet disinfector or a flow type ultraviolet disinfector.

10. The public toilet sewage integrated treatment system of claim 5, wherein: clear water pond (4) are including clear water inlet and clear water delivery port, the clear water inlet with biochemical delivery port (55) are connected through biochemical outlet conduit, be provided with first MBR suction pump (41) on the biochemical outlet conduit, first MBR suction pump (41) are kept away from the one end of biochemical treatment device (3) through the anti-water wash-out pipeline with the clear water delivery port is linked together, be provided with second MBR suction pump (42) on the biochemical outlet conduit, second MBR suction pump (42) are kept away from the one end of biochemical treatment device (3) is linked together through anti-water wash-out pipeline and membrane belt cleaning device (94).

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