CN111847765B

CN111847765B - District sewage integration high efficiency processing system

Info

Publication number: CN111847765B
Application number: CN202010564521.5A
Authority: CN
Inventors: 蒋愉林; 钟美凤
Original assignee: Zhejiang Zhongcheng Technology Co ltd
Current assignee: Zhejiang Zhongcheng Technology Co ltd
Priority date: 2020-06-19
Filing date: 2020-06-19
Publication date: 2022-08-23
Anticipated expiration: 2040-06-19
Also published as: CN111847765A

Abstract

The invention discloses a lamellar sewage integrated high-efficiency treatment system, wherein lamellar sewage alternately runs under an anoxic-aerobic environment to realize synchronous nitrogen and phosphorus removal, is precipitated by a secondary sedimentation tank, finally respectively enters a coagulation tank and a flocculation tank, is subjected to coagulation reaction by respectively adding PAC and PAM to remove TP, SS and the like remained in the sewage, so that SS and colloid substances are flocculated into larger particles, are subjected to mud-water separation by the sedimentation tank and finally discharged after reaching standards, and meanwhile, a primary anoxic tank, a primary aerobic tank, a secondary anoxic tank, a secondary aerobic tank and a secondary sedimentation tank are all positioned in a reaction container and are separated by a partition plate, so that the occupied area and the engineering cost are greatly saved, the invention realizes that the effluent reaches the standards, has good treatment effect, stable and reliable equipment operation and convenient operation, and effectively saves the occupied area for sewage treatment, the construction cost and the operation cost are reduced.

Description

District sewage integration high efficiency processing system

Technical Field

The invention relates to the field of sewage treatment, in particular to a piece area sewage integrated high-efficiency treatment system.

Background

The effluent index of the existing parcel sewage treatment project is improved to the first-class A standard from the original first-class B standard. The existing mature process flow for treating the sewage in the parcel is as follows: sewage water inlet → grid filtration → storage tank → biochemical reaction tank → secondary sedimentation tank → water outlet, the process can only reach the original first-level B standard water outlet index, can not reach the current first-level A standard water outlet index, and can not meet the water quality requirement of the water outlet after the standard is extracted, because: the existing plot sewage treatment project aims at the dephosphorization process, and phosphorus in sewage is enriched into sludge by phosphorus-feeding bacteria in the sewage in a biochemical process stage, and then the sludge enters a secondary sedimentation tank for sedimentation and is removed in the form of residual sludge. Along with the fluctuation of the quality of inlet water, the dephosphorization effect is unstable and cannot meet the effluent index of 0.5 mg/L; if the remaining sludge is retained for a long time, phosphorus in the sludge can be released again.

In order to deeply fulfill the requirement of 'green water action' for saving five water and co-curing, really strengthen and improve the water control result, effectively solve the problem of 'repeated cure and cure', realize the aim of 'never bringing dirty, muddy and muddy water and illegal buildings into comprehensive well', in order to achieve the aim of removing phosphorus, a sewage treatment facility needs to be redesigned (changed as little as possible), the sewage treatment capacity of a district is improved, and the effluent reaches the standard requirement.

Disclosure of Invention

The technical solution of the invention is as follows:

the invention aims to solve the existing problems and provides a lamellar region sewage integrated high-efficiency treatment system, which not only strengthens the standard discharge of sewage when the nitrogen and phosphorus removal effects of the sewage are enhanced, but also greatly reduces the occupied area.

The utility model provides a piece district sewage integration high efficiency processing system, its is including the regulation pond that is linked together in proper order, sewage reaction tank, coagulation tank, flocculation basin and sedimentation tank, sewage reaction tank is including consecutive one-level oxygen deficiency pond, the good oxygen pond of one-level, the good oxygen pond of second grade and two heavy ponds, sewage reaction tank is including reaction vessel, its central point department of position is fixed with two heavy ponds in the reaction vessel, two heavy ponds the lateral wall with annular region between reaction vessel's the inside wall separates into one-level oxygen deficiency pond through the baffle in proper order, the good oxygen pond of one-level, the good oxygen pond of second grade and second grade, two heavy ponds are including along radial from outer and interior annular diversion district, annular collecting area and two heavy pond owner grooves that arrange in proper order.

Preferably, the reaction container and the secondary sedimentation tank are both cylindrical, a circular truncated cone-shaped sludge collecting tank is formed at the bottom of the primary tank of the secondary sedimentation tank, the outer diameter of the sludge collecting tank is gradually reduced from top to bottom, the top of the sludge collecting tank is communicated with the bottom of the secondary sedimentation tank, a sludge discharge port is formed at the bottom of the sludge collecting tank, and the sludge discharge port is connected with a suction pump through a sludge pipeline.

Preferably, a reaction water inlet is formed in a position, above the side wall of the reaction vessel, of the first-stage anoxic tank region, a downward flow through hole is formed in a position, close to the bottom surface of the reaction vessel, of a partition plate located between the first-stage anoxic tank and the first-stage aerobic tank, an upward flow through hole is formed in a position, far away from the bottom surface of the reaction vessel, of the partition plate located between the first-stage aerobic tank and the second-stage anoxic tank, a downward flow through hole is formed in a position, close to the bottom surface of the reaction vessel, of the partition plate located between the second-stage anoxic tank and the second-stage aerobic tank, and a secondary sedimentation tank water inlet weir is communicated between the second-stage aerobic tank and the annular flow guiding region.

Preferably, the bottom surface of the annular water collecting area is an inclined annular structure and comprises a highest point of a water collecting bottom surface and a lowest point of the water collecting bottom surface, the bottom surface of the annular flow guide area is an inclined annular structure with the inclination direction opposite to the inclination direction of the annular water collecting area, the device comprises a highest point of a diversion bottom surface and a lowest point of the diversion bottom surface, the height of the lowest point of the diversion bottom surface and the height of the bottom surface of the main tank of the secondary sedimentation tank are both lower than the height of the highest point of the bottom surface of the annular water collecting area, the annular flow guide area is communicated with the main tank of the secondary sedimentation tank through a main tank water inlet, the main tank water inlet is positioned at the lowest point of the flow guide bottom surface, the annular water collecting area is communicated with the main tank of the secondary sedimentation tank through a main tank water outlet, the height of the main tank water outlet is positioned between the lowest point of the water collecting bottom surface and the main tank water inlet, and the annular water collecting area is communicated with the coagulation tank 4 through negative pressure.

Preferably, a buffering flow guide ring is fixed on the bottom surface of the annular flow guide area, the cross section of the buffering flow guide ring is a right triangle, and the bevel edge of the buffering flow guide ring inclines towards the main groove direction of the secondary sedimentation tank.

Preferably, a plurality of guide plates are fixed on the inner side wall of the main tank of the secondary sedimentation tank at intervals, the guide plates incline from the inner side wall of the main tank of the secondary sedimentation tank to the center direction of the main tank of the secondary sedimentation tank, fine through holes are densely distributed on the guide plates, hollow conical filter holes are formed above the through holes, and the diameters of the filter holes are gradually reduced from the upper surface of the guide plates to the outside.

Preferably, the regulation and storage tank comprises a sewage inlet and a lift pump, and the regulation and storage tank is communicated with the first-stage anoxic tank reaction water inlet through the lift pump.

As preferred, one-level oxygen deficiency pond with the end of intaking in second grade oxygen deficiency pond has all seted up the carbon source and has thrown the mouth, PAC throws the mouth and has connected with carbon source charge device through the medicament pipe connection, one-level good oxygen pond top has seted up alkali lye and has thrown the mouth, alkali lye throws the mouth and has connected alkali lye charge device through the medicament pipe connection, the coagulating basin has PAC to add the medicinal cupping through the medicament pipe connection, the flocculating basin has PAM to add the medicinal cupping through the medicament pipe connection.

Preferably, the aeration devices are arranged in the primary anoxic tank, the primary aerobic tank, the secondary anoxic tank, the secondary aerobic tank coagulation tank and the flocculation tank, the aeration devices are connected with the air blower, and the aeration amount in the primary anoxic tank, the secondary anoxic tank, the coagulation tank and the flocculation tank is small.

Preferably, a sludge reflux pump is arranged in the primary aerobic tank and communicated with the primary anoxic tank through a sludge pipeline.

The invention has the beneficial effects that:

1. the invention relates to a lamellar sewage integrated high-efficiency treatment system, lamellar sewage alternately runs in an anoxic-aerobic environment to realize synchronous nitrogen and phosphorus removal, denitrifying bacteria reduce nitrite nitrogen and nitrate nitrogen in return wastewater into nitrogen to be discharged in an anoxic tank by utilizing a carbon source and a supplementary carbon source in raw water and degrade organic matters in the raw water, then the nitrogen and nitrate nitrogen are oxidized into ammonia nitrogen and the ammonia nitrogen into nitrate nitrogen by utilizing ammoniating and nitrifying bacteria under the aerobic state through control reaction, most organic matters in the wastewater are degraded to realize nitrogen removal, anoxic denitrification and phosphorus removal, nitrification is alternately carried out, then the nitrogen and nitrate nitrogen are precipitated in a secondary sedimentation tank, finally the nitrogen and anoxic denitrification and phosphorus removal are respectively carried out in a coagulation tank and a flocculation tank, PAC and PAM are respectively added to carry out coagulation reaction, TP, SS and the like remained in the sewage are removed, and SS and colloidal substances are flocculated into larger particles, the sewage treatment device comprises a reaction container, a first-stage anoxic tank, a first-stage aerobic tank, a second-stage anoxic tank, a second-stage aerobic tank and a second sedimentation tank, wherein the reaction container is provided with a water inlet, a water outlet and a water outlet, the first-stage anoxic tank, the first-stage aerobic tank, the second-stage anoxic tank, the second-stage aerobic tank and the second sedimentation tank are arranged in the reaction container and are separated by a partition plate, and therefore the occupied area and the engineering cost are greatly saved.

The invention discloses a secondary sedimentation tank, which comprises an annular flow guide area, an annular water collecting area and a secondary sedimentation tank main groove which are sequentially arranged from outside to inside along the radial direction, wherein the annular flow guide area can play a role of flow slowing, the bottom surface of the annular flow guide area is of an inclined annular structure, a buffering flow guide ring is fixed on the bottom surface of the annular flow guide area, a main groove water inlet of the buffering flow guide ring is arranged at the lowest point of the annular flow guide area, so that sludge entering the annular flow guide area can be gathered at the lowest point of the flow guide bottom surface along the inclined structure and finally flows out through a main groove water inlet, the buffering flow guide ring not only can buffer sewage entering from a secondary sedimentation tank water inlet weir, but also can play a role of flow guiding, the sewage can completely flow into the main groove water inlet along the inclined angle of the inclined edge of the main groove without sludge sedimentation and accumulation, a plurality of flow guide plates are fixed on the inner side wall of the secondary sedimentation tank main groove at intervals, and incline from the inner side wall of the secondary sedimentation tank main groove to the center direction of the secondary sedimentation tank main groove, the guide plate can further play the effect of buffering, when preventing that sewage from getting into, because the impact force is too big for the mud that deposits in the secondary sedimentation pond owner inslot becomes more turbid, influences the precipitation effect, it has tiny through-hole to gather on the guide plate, the shaping of through-hole top has the filtration pore of cavity coniform, plays the effect of further filtration mud, makes final play water clarification, and the sedimentation effect is fabulous, and the mud-water separation effect is good.

Drawings

FIG. 1 is a schematic structural view of a zonal sewage integrated high-efficiency treatment system of the present invention;

FIG. 2 is a process flow diagram of a zonal sewage integrated high-efficiency treatment system according to the present invention;

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

FIG. 4 is a sectional view of a sewage reaction vessel of the present invention;

fig. 5 is an enlarged view of the point a in fig. 4 according to the present invention.

In the figure: the device comprises a regulation and storage tank 1, a lift pump 11, a sewage reaction tank 2, a primary anoxic tank 21, a primary aerobic tank 22, a secondary anoxic tank 23, a secondary aerobic tank 24, a secondary sedimentation tank 3, an annular flow guide area 31, a buffer flow guide ring 311, a secondary sedimentation tank water inlet weir 312, an annular water collecting area 32, a secondary sedimentation tank main tank 33, a main tank water inlet 331, a main tank water outlet 332, a flow guide plate 333, a filter hole 334, a coagulation tank 4, a flocculation tank 5, a sedimentation tank 6, a reaction container 7, a reaction water inlet 71, a support 72, a sludge collecting tank 8, a carbon source dosing device 10, an alkali liquor dosing device 101, a PAC dosing tank 102, an aeration device 103, an air blower 104, a sludge reflux pump 105 and a PAM dosing tank 106.

The specific implementation mode is as follows:

the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "central," "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 are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.

In the present invention, unless otherwise expressly specified or limited, the terms "disposed," "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected or detachably connected; may be a mechanical connection; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

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 to implicitly indicate 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 defined otherwise.

As shown in figures 1-5, a district sewage integrated high-efficiency treatment system comprises a regulation and storage tank 1, a sewage reaction tank 2, a coagulation tank 4, a flocculation tank 5 and a sedimentation tank 6 which are communicated in sequence.

Specifically, regulation pond 1 is linked together through elevator pump 11 and sewage reaction tank 2, regulation pond 1 is including regulation sewage entry and regulation sewage export, it is linked together with section sewage export to adjust sewage entry, and at the time interval nature of water, sewage quality of water, water yield fluctuation are great, so regulation pond 1 is used for carrying out the regulation homogenization of water yield, quality of water, guarantees follow-up biochemical treatment's normal operating.

Specifically, sewage reaction tank 2 is including consecutive one-level oxygen deficiency pond 21, the good oxygen pond of one-level 22, second grade oxygen deficiency pond 23, the good oxygen pond of second grade 24 and two heavy ponds 3, sewage reaction tank 2 is including reaction vessel 7, its central point department of position is fixed with two heavy ponds 3 in the reaction vessel 7, two heavy ponds 3 the lateral wall with annular region between reaction vessel 7's the inside wall separates into one-level oxygen deficiency pond 21 through the baffle in proper order, the good oxygen pond of one-level 22, the good oxygen pond of second grade 23 and second grade 24, two heavy ponds 3 are including along radial from outer annular diversion district 31, annular water catch area 32 and two heavy pond owner's grooves 33 that arrange in proper order, area and engineering cost have been saved by a wide margin to the design of sewage reaction tank 2 partition board altogether.

Specifically, the reaction container 7 and the secondary sedimentation tank 3 are both cylindrical, and the bracket 72 is fixed at the bottom of the reaction container 7, so that the phenomenon that the whole reaction container 7 is unstable and inclined due to the round platform structure of the sludge collection tank 8 is prevented. The secondary sedimentation tank main tank 33 bottom shaping has the collection mud pond 8 of round platform form, its external diameter top-down of collection mud pond 8 reduces gradually, the top of collection mud pond 8 with the bottom of secondary sedimentation tank 3 is linked together, the mud discharge port has been seted up to collection mud pond 8 bottom, the mud discharge port has the suction pump through mud pipe connection, carries out the suction outward transportation through the suction pump regularly to the mud in the secondary sedimentation tank 3 and handles.

Specifically, a reaction water inlet 71 is formed in the area of the first-stage anoxic tank 21 above the side wall of the reaction vessel 7, a downward flow through hole is formed in the position, close to the bottom surface of the reaction vessel 7, of a partition plate located between the first-stage anoxic tank 21 and the first-stage aerobic tank 22, so that the bottom portion of the first-stage anoxic tank 21 is communicated with the bottom portion of the first-stage aerobic tank 22, an upward flow through hole is formed in the position, far from the bottom surface of the reaction vessel 7, of a partition plate located between the first-stage aerobic tank 22 and the second-stage anoxic tank 23, so that the upper portion of the first-stage aerobic tank 22 is communicated with the upper portion of the second-stage anoxic tank 23, a downward flow through hole is formed in the position, close to the bottom surface of the reaction vessel 7, of a partition plate located between the second-stage anoxic tank 23 and the second-stage aerobic tank 24, a second sinking tank water inlet weir 312 is communicated between the second-stage aerobic tank 24 and the annular flow guiding area 31, so that the sewage treated by the multi-stage AO enters the secondary sedimentation tank 3 through the secondary sedimentation tank water inlet weir 312 for sedimentation treatment.

Specifically, the bottom surface of the annular water collecting area 32 is an inclined annular structure, which includes a highest point of a water collecting bottom surface and a lowest point of the water collecting bottom surface, the bottom surface of the annular flow guiding area 31 is an inclined annular structure with an inclination direction opposite to the inclination direction of the annular water collecting area 32, which includes a highest point of a flow guiding bottom surface and a lowest point of a flow guiding bottom surface, both the height of the lowest point of the flow guiding bottom surface and the height of the bottom surface of the secondary sedimentation tank main tank 33 are lower than the height of the highest point of the bottom surface of the annular water collecting area 32, the annular flow guiding area 31 is communicated with the secondary sedimentation tank main tank 33 through a main tank water inlet 331, the main tank water inlet 331 is located at the lowest point of the flow guiding bottom surface, the annular water collecting area 32 is communicated with the secondary sedimentation tank main tank 33 through a main tank water outlet 332, the height of the main tank water outlet 332 is located between the lowest point of the water collecting bottom surface and the main tank water inlet 331, the annular water collecting area 32 is communicated with the coagulation tank 4 through negative pressure.

Specifically, a buffering flow guide ring 311 is fixed on the bottom surface of the annular flow guide region 31, the cross section of the buffering flow guide ring 311 is a right triangle, the inclined edge of the buffering flow guide ring is inclined towards the direction of the primary tank 33 of the secondary sedimentation tank, the annular flow guide region 31 is an inclined annular structure, and the primary tank water inlet 331 is arranged at the lowest point of the annular flow guide region, so that sludge entering the annular flow guide region 31 can be gathered at the lowest point of the flow guide bottom surface along the inclined structure, and finally the buffering flow guide ring 311 flows out of the primary tank water inlet 331 through the primary tank water inlet 331, so that the buffering flow guide ring 311 not only can buffer sewage entering from the secondary sedimentation tank water inlet weir 312, but also can play a role in flow guide, and the sewage can completely flow into the primary tank water inlet 331 along the inclined angle of the inclined edge of the main tank without sludge sedimentation and accumulation.

Two sink the pond owner groove 33 inside walls on the interval be fixed with a plurality of guide plate 333, guide plate 333 certainly two sink the pond owner groove 33 the inside wall to two sink the center direction slope of pond owner groove 33, guide plate 333 can play the effect of buffering, when preventing that sewage from getting into, because the impact force is too big for two sink the interior mud that deposits of pond owner groove 33 become more turbid, influence the clarity of play water, it has tiny through-hole to gather on the guide plate 333, the shaping of through-hole top has the filtration pore 334 of hollow circular cone form, just the diameter of filtering pore 334 certainly the upper surface of guide plate 333 reduces outwards gradually, the diameter of filtering pore 334 is 1mm ~5mm, plays the effect of further filtering mud.

Specifically, one-level oxygen deficiency pond 21 with the carbon source mouth of throwing has all been seted up to the end of intaking in second grade oxygen deficiency pond 23, the carbon source mouth of throwing has carbon source charge device 10 through medicament tube coupling, the alkali lye mouth of throwing has been seted up to one-level good oxygen pond 22 top, the alkali lye mouth of throwing has alkali lye charge device 101 through medicament tube coupling, adds lye solution for the acid material of neutralization aquatic for water is alkalescent, is favorable to the growth of microorganism, improves follow-up aerobic reaction's efficiency, it has PAC to add the medicinal cupping 102 to thoughtlessly congeal pond 4 through medicament tube coupling, flocculation basin 5 has PAM to add medicinal cupping 106 through medicament tube coupling.

Specifically, aeration devices 103 are arranged in the first-stage anoxic tank 21, the first-stage aerobic tank 22, the second-stage anoxic tank 23, the second-stage aerobic tank 24, the coagulation tank 4 and the flocculation tank 5, the aeration devices 103 are all connected with an air blower 104, the aeration devices 103 can be tubular aerators or disc aerators, the aeration devices 103 continuously bring air into the tanks, play oxygen supply and release micro bubbles, improve oxygen utilization rate, strengthen the oxidation effect of organic matters and ammonia nitrogen, and simultaneously promote water flow to flow in the horizontal direction and prevent the precipitation of activated sludge, the aeration amounts in the first-stage anoxic tank 21, the second-stage anoxic tank 23, the coagulation tank 4 and the flocculation tank 5 are small, and the first-stage anoxic tank is mainly used for stirring and flow making, so that sludge in the tanks is guaranteed not to precipitate. The primary aerobic tank 22 and the secondary aerobic tank 24 are provided with an air pump and a rotor flow meter for aerating the primary aerobic tank 22 and the secondary aerobic tank 24 and adjusting aeration amount, the primary anoxic tank 21, the primary aerobic tank 22, the secondary anoxic tank 23 and the secondary aerobic tank 24 are respectively provided with a plurality of baffles, fillers can be filled between the baffles, a great amount of microorganisms are attached to the fillers and then filled with the fillers, the aerobic sludge age and the anoxic sludge age are not influenced by the tank capacity, meanwhile, the number of the microorganisms in the tank is increased, the volume load is increased, and the tank capacity is reduced.

Specifically, a sludge return pump 105 is arranged in the primary aerobic tank 22, and the sludge return pump 105 is communicated with the primary anoxic tank 21 through a sludge pipeline.

Specifically, a district sewage integration high efficiency processing system passes through main control unit control, carbon source charge device 10, alkali lye charge device 101, PAC dosing tank 102, PAM dosing tank 106, air-blower 104 and the switch board of controlling a district sewage integration high efficiency processing system all are located the equipment room, equipment centralized management, and operation management is convenient, easily realizes automatic control.

An integrated high-efficiency treatment system for sewage in a subarea is characterized in that the sewage in the subarea enters a regulation and storage tank 1 through a regulation and storage sewage inlet, the water quality and the water fluctuation of the sewage are large in time interval of water use, so the regulation and storage tank 1 is used for regulating and homogenizing the water quantity and the water quality and ensuring the normal operation of subsequent biochemical treatment, sludge precipitated in a regulation tank 2 is periodically pumped and transported outwards, the regulation and storage tank 1 is pumped into a primary anoxic tank 21 through a lift pump 11, the sewage treated by the primary anoxic tank 21 flows into a primary aerobic tank 22 from the bottom for treatment, the sewage treated by the primary aerobic tank 22 overflows from the upper part and flows into a secondary anoxic tank 23, the sewage treated by the secondary anoxic tank 23 flows into a secondary aerobic tank 24 from the bottom, the sewage treated by the secondary aerobic tank 24 enters a secondary sedimentation tank 3 for precipitation, and finally passes through a coagulation tank 4, the sludge in the flocculation tank 5 and the sludge collection tank 8 is periodically pumped and transported for disposal after being treated by the flocculation tank 5 and the sedimentation tank 6.

The treatment process has the advantages that:

firstly: the sewage in the zone alternately operates under an anoxic-aerobic environment to realize synchronous nitrogen and phosphorus removal, denitrifying bacteria reduce nitrite nitrogen and nitrate nitrogen in the return wastewater into nitrogen gas to be discharged in an anoxic tank by using a carbon source and a supplementary carbon source in raw water and degrade organic matters in the raw water, then the nitrogen gas enters an aerobic tank, organic nitrogen is oxidized into ammonia nitrogen and the ammonia nitrogen is oxidized into nitrate nitrogen by controlling reaction in an aerobic state by using ammoniating and nitrifying bacteria, most organic matters in the wastewater are degraded to realize nitrogen removal, anoxic denitrification and phosphorus removal, nitrification is alternately performed, then the nitrogen gas and the phosphorus removal are precipitated in a secondary sedimentation tank, finally the sewage respectively enters a coagulation tank and a flocculation tank to carry out coagulation reaction by respectively adding PAC and PAM, TP, SS and the like remained in the sewage are removed, SS and colloidal substances are flocculated into larger particles, mud and water separation is carried out in the sedimentation tank, and finally the sewage reaches the standard and is discharged, meanwhile, the primary anoxic tank, the primary aerobic tank, the secondary anoxic tank, the secondary aerobic tank and the secondary sedimentation tank are all positioned in the reaction container and are separated by the partition plates, so that the occupied area and the engineering cost are greatly saved.

Secondly, the method comprises the following steps: according to the characteristics of the traditional A/O process, the two-stage A/O process is connected in series to improve the total nitrogen removal rate, and the nitrogen removal rate of the invention is obviously higher than that of the traditional A/O process;

secondly, the method comprises the following steps: the BOD volume load is high, the sludge biomass is large, the treatment efficiency is relatively high, and the adaptability to the inflow impact load (hydraulic impact load and organic concentration impact load) is strong.

Thirdly, the method comprises the following steps: the sludge bulking problem does not exist, and the operation management is simple.

Fourthly: easy to culture and domesticate, and after long-time shutdown, the organism can be quickly recovered when the operation is performed again. The biological membrane has stronger adaptability to intermittent operation.

Fifth, the method comprises the following steps: the electric equipment is few, and it is convenient to maintain and manage, and system stability is strong, and the working costs is low.

The above description is only for the 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

1. The utility model provides a district sewage integration high efficiency processing system which characterized in that: it is including regulation and storage pond (1) that are linked together in proper order, sewage reaction tank (2), coagulation basin (4), flocculation basin (5) and sedimentation tank (6), sewage reaction tank (2) are including consecutive one-level oxygen deficiency pond (21), one-level good oxygen pond (22), second grade oxygen deficiency pond (23), second grade good oxygen pond (24) and two heavy ponds (3), sewage reaction tank (2) are including reaction vessel (7), its central point department of position is fixed with two heavy ponds (3) in reaction vessel (7), the lateral wall that two heavy ponds (3) with annular region between the inside wall of reaction vessel (7) separates into one-level oxygen deficiency pond (21) through the baffle in proper order, one-level good oxygen pond (22), second grade oxygen deficiency pond (23) and second grade good oxygen pond (24), two heavy ponds (3) are including annular flow guide district (31) that radially arrange in proper order from outside to inside, An annular water collecting area (32) and a secondary sedimentation tank main tank (33);

the reaction container (7) and the secondary sedimentation tank (3) are both cylindrical, a circular truncated cone-shaped sludge collecting tank (8) is formed at the bottom of the primary tank (33) of the secondary sedimentation tank, the outer diameter of the sludge collecting tank (8) is gradually reduced from top to bottom, the top of the sludge collecting tank (8) is communicated with the bottom of the secondary sedimentation tank (3), a sludge discharge port is formed at the bottom of the sludge collecting tank (8), and the sludge discharge port is connected with a suction pump through a sludge pipeline;

a reaction water inlet (71) is formed in the area, located in the first-stage anoxic tank (21), above the side wall of the reaction container (7), a downward flow through hole is formed in a position, close to the bottom surface of the reaction container (7), of a partition plate located between the first-stage anoxic tank (21) and the first-stage aerobic tank (22), an upward flow through hole is formed in a position, far away from the bottom surface of the reaction container (7), of the partition plate located between the first-stage aerobic tank (22) and the second-stage anoxic tank (23), a downward flow through hole is formed in a position, close to the bottom surface of the reaction container (7), of the partition plate located between the second-stage anoxic tank (23) and the second-stage aerobic tank (24), and a second sinking tank water inlet weir (312) is communicated between the second-stage aerobic tank (24) and the annular flow guide area (31);

the bottom surface of the annular water collecting area (32) is of an inclined annular structure and comprises a highest point of a water collecting bottom surface and a lowest point of the water collecting bottom surface, the bottom surface of the annular flow guiding area (31) is of an inclined annular structure with the inclination direction opposite to the inclination direction of the annular water collecting area (32) and comprises a highest point of the flow guiding bottom surface and a lowest point of the flow guiding bottom surface, the height of the lowest point of the flow guiding bottom surface and the height of the bottom surface of the secondary sedimentation tank main tank (33) are both lower than the height of the highest point of the bottom surface of the annular water collecting area (32), the annular flow guiding area (31) is communicated with the secondary sedimentation tank main tank (33) through a main tank water inlet (331), the main tank water inlet (331) is positioned at the lowest point of the flow guiding bottom surface, the annular water collecting area (32) is communicated with the secondary sedimentation tank main tank (33) through a main tank water outlet (332), and the height of the main tank water outlet (332) is positioned between the lowest point of the water collecting bottom surface and the main tank water inlet (331), the annular water collecting area (32) is communicated with the coagulation tank (4) through negative pressure;

a buffering guide ring (311) is fixed on the bottom surface of the annular guide area (31), the cross section of the buffering guide ring (311) is a right-angled triangle, and the bevel edge of the buffering guide ring is inclined towards the direction of the secondary sedimentation tank main tank (33);

two sink and be fixed with a plurality of guide plate (333) on the interval on pond owner groove (33) inside wall, guide plate (333) certainly the inside wall of two sink pond owner groove (33) to the central direction slope of two sink pond owner groove (33), it has thin and small through-hole to gather on guide plate (333), the shaping of through-hole top has filtration hole (334) of cavity coniform, just the diameter of filtering hole (334) certainly the upper surface of guide plate (333) reduces gradually outwards.

2. The integrated high-efficiency treatment system for the sewage in the areas of the chip as claimed in claim 1, wherein:

the regulation pond (1) is including sewage inlet port and elevator pump (11), regulation pond (1) is passed through elevator pump (11) with one-level oxygen deficiency pond (21) reaction water inlet (71) are linked together.

3. The integrated high-efficiency treatment system for the sewage in the areas of the chip as claimed in claim 1, wherein: one-level oxygen deficiency pond (21) with the carbon source mouth of throwing has all been seted up to the end of intaking in second grade oxygen deficiency pond (23), the carbon source mouth of throwing has carbon source charge device (10) through the medicament tube coupling, alkali lye mouth of throwing has been seted up to one-level good oxygen pond (22) top, alkali lye mouth of throwing has alkali lye charge device (101) through the medicament tube coupling, it has PAC to add medicine jar (102) to coagulate pond (4) through the medicament tube coupling, flocculation pond (5) have PAM to add medicine jar (106) through the medicament tube coupling.

4. The integrated high-efficiency treatment system for the sewage in the areas of the chip of claim 1, which is characterized in that: the aeration device comprises a primary anoxic tank (21), a primary aerobic tank (22), a secondary anoxic tank (23), a secondary aerobic tank (24), a coagulation tank (4) and a flocculation tank (5), wherein aeration devices (103) are arranged in the aeration devices (103), the aeration devices (103) are all connected with an air blower (104), and aeration quantities in the primary anoxic tank (21), the secondary anoxic tank (23), the coagulation tank (4) and the flocculation tank (5) are smaller.

5. The integrated high-efficiency treatment system for the sewage in the areas of the chip as claimed in claim 1, wherein: a sludge return pump (105) is arranged in the first-stage aerobic tank (22), and the sludge return pump (105) is communicated with the first-stage anoxic tank (21) through a sludge pipeline.