CN217780965U - Micro-power A 2 O integrated urban and rural domestic sewage treatment device - Google Patents

Micro-power A 2 O integrated urban and rural domestic sewage treatment device Download PDF

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CN217780965U
CN217780965U CN202220577251.6U CN202220577251U CN217780965U CN 217780965 U CN217780965 U CN 217780965U CN 202220577251 U CN202220577251 U CN 202220577251U CN 217780965 U CN217780965 U CN 217780965U
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aerobic
sewage treatment
anaerobic
anoxic
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李静宇
郭洪君
张勇
何强
杨露
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Liaoning Shanshui Qing Environmental Protection Technology Co ltd
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Liaoning Shanshui Qing Environmental Protection Technology Co ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
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    • Y02W10/10—Biological treatment of water, waste water, or sewage

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Abstract

The utility model provides a micro-power A 2 O integrated urban and rural domestic sewage treatment device, including the body; the shell comprises an anaerobic zone, an anoxic zone, an aerobic zone and a sedimentation zone which are arranged in sequence; an aeration system and a biological filler layer are arranged in the aerobic zone. The sewage is treated by the treatment device provided by the utility model, the retention time is increased, and the effect of synchronous denitrification and dephosphorization is realized.

Description

Micro-power A 2 O integrated town and rural domestic sewage treatment device
Technical Field
The utility model belongs to the technical field of sewage treatment plant, especially, relate to a fine motion power A 2 O integrated urban and rural domestic sewage treatment device.
Background
The national requirements for the environmental quality are increasingly strict, and the sewage treatment and the recycling are trending. For town sewage, a centralized treatment mode is usually adopted, but most rural areas, especially in remote areas with low population density, have the prominent problems of difficult sewage collection, large investment in pipe networks, large occupied area, high requirements on operation management level and the like in the traditional large-scale centralized sewage treatment, so that distributed sewage treatment and recycling become the most effective sewage treatment measure in villages and towns and rural areas.
SUMMERY OF THE UTILITY MODEL
In view of this, the present invention provides a micro-power A 2 O is an integrated urban and rural domestic sewage treatment device, which is simple and can realize synchronous nitrogen and phosphorus removal.
The utility model provides a micro-power A 2 O integrated town and rural domestic sewage treatment equipment is characterized by comprising a shell;
the shell comprises an anaerobic zone, an anoxic zone, an aerobic zone and a sedimentation zone which are arranged in sequence;
an aeration system and a biological filler layer are arranged in the aerobic zone.
Preferably, the biological filler layer is arranged in a plurality of layers according to the direction from the water inlet to the water outlet of the sewage.
Preferably, a bracket is welded in the aerobic zone;
the upper end and the lower end of the multilayer biological filler layer are fixed on the bracket.
Preferably, a jet type jet stirrer or a submersible stirrer is arranged in the anaerobic zone;
and a plug-flow stirrer is arranged in the anoxic tank.
Preferably, an inclined plate is arranged in the sedimentation zone.
Preferably, the aeration system is below the bio-filler layer.
Preferably, the sludge reflux pump is arranged outside the shell;
a sludge recirculation pump is used to recirculate the recirculating sludge from the settling zone to the anaerobic zone.
Preferably, a nitrifying liquid return pipe is arranged between the aerobic zone and the anoxic zone.
The utility model provides a micro-power A 2 O integrated urban and rural domestic sewage treatment device, including the body; the shell comprises an anaerobic zone, an anoxic zone, an aerobic zone and a sedimentation zone which are arranged in sequence; an aeration system and a biological filler layer are arranged in the aerobic zone. The sewage is treated by the treatment device provided by the utility model, the retention time is increased, and the effect of synchronous denitrification and dephosphorization is realized.
Drawings
Figure 1 is the micro-power A provided by the utility model 2 The structure of the O integrated urban and rural domestic sewage treatment device is shown schematically, wherein the O integrated urban and rural domestic sewage treatment device comprises a shell 1, an anaerobic zone 2, an anoxic zone 3, an aerobic zone 4, a settling zone 5, a partition plate 6, a stirrer 7, a fan 8, an aeration system 9, a biological filler 10 and an air stripping device 11;
FIG. 2 is a schematic view of the process flow of the sewage treatment device of the present invention.
Detailed Description
The utility model provides a micro-power A 2 O integrated urban and rural domestic sewage treatment device, including the body;
the shell comprises an anaerobic zone, an anoxic zone, an aerobic zone and a sedimentation zone which are arranged in sequence;
an aeration system and a biological filler layer are arranged in the aerobic zone.
The utility model provides a processing apparatus integrates a biochemical pool and a mobile bioreactor. All process flows are carried out inside the housing 1. Sewage enters an anaerobic zone 2 through a water inlet pipeline (1), the anaerobic zone 2 has the function of anaerobic phosphorus removal, and the anaerobic zone occupies a relatively small volume percentage in the shell; the internal stirring of the anaerobic zone adopts a jet flow type jet stirrer 7 or a submersible stirrer; the fan passes through air conduit (2) and sprays the agitator air feed to the efflux formula for promote the flow of sewage, form and spray the flow state to the spatial coverage nature, simultaneously through the continuous change of nozzle angle, drive the interior random mixed flow of medium of container and mix.
In the anaerobic zone 2, raw sewage and phosphorus-containing sludge which synchronously enters the secondary sedimentation tank and flows back flow, the main function of the anaerobic zone is to release phosphorus, so that the concentration of the phosphorus in the sewage is increased, and soluble organic matters are absorbed by microbial cells to ensure BOD 5 The concentration is reduced; in addition, NH 3 N is partially removed by cell synthesis to remove NH from the wastewater 3 Decrease in-N concentration, but NO 3 the-N content was unchanged.
In the utility model, the shell is divided into an anaerobic zone 2, an anoxic zone 3, an aerobic zone 4 and a sedimentation zone 5 by a clapboard 6;
the utility model discloses in, the sewage through anaerobic treatment gets into oxygen deficiency pond 3 through the baffle top, and oxygen deficiency pond embeds agitator 7, makes sewage fully stir to obtain abundant mixture. The type of the stirrer in the anaerobic pool area is the same as that in the anoxic area, and the stirrer is preferably a jet type jet stirrer 7 or a submersible stirrer. Under the anoxic environment, the denitrifying bacteria take organic matters in the sewage as carbon sources, and a large amount of nitrate nitrogen is brought into the reflux mixed liquor and reduced into nitrogen gas, and the nitrogen gas is released into the air.
In the utility model, the middle of the anoxic zone 3 and the aerobic zone 4 is separated by a clapboard 6, a hole is arranged above the clapboard, the sewage treated by the anoxic zone enters the aerobic zone 4 through the upper part of the clapboard, a submerged fan 8, an air stripping device 11, an aeration system 9 and biological fillers 10 are arranged in the aerobic zone 4, and the aeration system comprises an aeration pipe and an aeration disc; the fan 8 firstly supplies air to an aeration system 9 in the aerobic zone 4 through an air pipeline (2) so as to maintain the concentration of dissolved oxygen in the aerobic zone. The utility model supplies air to the air stripping device through the air stripping pipeline (3) for the return flow of the nitrified liquid. The aerobic zone contains a large amount of activated sludge, the activated sludge performs aerobic respiration in an aerobic environment to degrade and adsorb organic pollutants in a water body, organic matters are further converted into inorganic matters, and ammonia nitrogen is removed at the same time, so that the aim of purifying water quality is fulfilled. In the utility model, a nitrifying liquid return pipe is arranged between the aerobic zone and the anoxic zone. The reflux ratio of the nitrifying liquid is up to 100-300%. A reflux pump is arranged between the settling zone and the anaerobic zone, and the reflux sludge can directly reflux to the anaerobic zone from the settling zone.
The utility model discloses in, the inside aeration that needs of device, on the one hand for maintaining the required dissolved oxygen concentration of biological bacterial, on the other hand is that the air stripping device in good oxygen district and the jet-type of anaerobic zone spray the agitator provide sufficient power. The equipment for providing air adopted by the aeration of the utility model is a built-in submerged blower, and also can adopt an external Roots blower. The aeration device adopted by the aeration system is a disc aerator, or a microporous aeration pipe is directly adopted for aeration.
A biological packing layer 10 is arranged above the aeration system, and in the utility model, a plurality of layers of biological packing layers are arranged according to the direction from water inlet to water outlet of sewage; the distance between two adjacent biological filler layers is 10-20 cm. Under aerobic conditions, when aeration and oxygenation are carried out, the rising buoyancy of air bubbles pushes the filler and the surrounding water body to flow, when airflow passes through the water flow and the biological filler, the airflow is fully stirred and mixed with the water flow, and the airflow is fully divided into fine bubbles, so that the contact and oxygen transfer efficiency of the biological filler and oxygen is improved. Nitrifying liquid flows back from the aerobic zone 4 to the anoxic zone 3 through a nitrifying liquid return pipe (4). The biological filler comprises solid filler and/or net body filler; the solid filler is in the shape of a ring, a saddle, a grid plate or a corrugated plate; the shape of the mesh body filler is selected from saddle-shaped mesh or corrugated mesh. In a specific embodiment, the biological filler is in the shape of a PE ring sheet and a hydroformylation vinylon silk bouquet.
The utility model discloses the preferred horizontal centrifugal pump that adopts of backwash pump that adopts.
A sedimentation zone 5 is arranged behind the aerobic zone 4, the sewage after the reaction in the aerobic zone enters the sedimentation zone from an effluent weir 12 on a middle partition plate of the aerobic zone and the sedimentation zone, an inclined plate 13 is arranged above the sedimentation zone, and the sewage is discharged through the inclined plate 13 after the sludge-water mixed liquid entering the sedimentation zone is subjected to sludge-water separation in a sedimentation tank.
A sludge reflux pump 16 is arranged in the external equipment room of the shell; and a dosing system consisting of a dosing barrel 14 and a dosing pump 15; the return sludge is returned from the settling zone 5 to the anaerobic zone 2 by a sludge pipe sludge return pump 16 No. (5). The dosing system is used for dosing a medicament to the aerobic zone, and removing phosphorus in the sewage more effectively.
The utility model discloses in, equipment external configuration solar cell panel 18 for provide the required electric energy of equipment.
FIG. 2 is a schematic view of the process flow of the sewage treatment device of the present invention;
the utility model discloses in, the built-in jet type nozzle agitator of anaerobic zone makes the sewage in anaerobic zone obtain abundant flow and mixes, and the dwell time in anaerobic zone is 1 ~ 2h.
A submersible stirrer is arranged in the anoxic zone, and the detention time is 2-4 h;
an aeration system and biological fillers are arranged in the aerobic zone, aeration is carried out through a fan, the dissolved oxygen concentration required by the aerobic zone is maintained, a large number of activated sludge microorganisms are contained in the aerobic zone, the activated sludge performs aerobic respiration in an aerobic environment to degrade and adsorb organic pollutants in a water body, organic matters are further decomposed into inorganic matters, the purpose of water quality purification is achieved, and the retention time in the aerobic zone is 4-8 hours.
The inclined plate is arranged in the sedimentation zone, suspended matters in water are removed by utilizing the natural sedimentation effect of the water, and the intercepted sludge flows back to the anaerobic zone for 2-4 hours.
The utility model provides a micro-power A 2 The O integrated urban and rural domestic sewage treatment device has the following technical effects:
(1) Reasonable residence time of the system, A 2 The O process is the simplest synchronous nitrogen and phosphorus removal process. The total retention time is controlled to be 7-14 hours, so that the operation stability is ensured;
(2) The treatment effect is good: the traditional process is adopted, the process is mature, the treatment effect is stable and reliable, the performance is stable, the operation is reliable, and the volume of the tank body is fully utilized;
(3) The energy consumption is low: the equipment combines the air stripping technology of the anoxic zone, the anaerobic zone adopts a jet nozzle stirrer, the overall energy consumption is reduced, a nitrifying liquid reflux pump and an anaerobic tank stirrer in the anoxic zone are eliminated, the equipment structure is simplified, and the equipment operation energy consumption is reduced;
(4) The operation is stable and reliable: the internal structure of the equipment is simple, the installation is convenient, and the maintenance and the overhaul of the equipment are more convenient;
(5) Energy conservation and environmental protection: the device adopts solar photovoltaic power generation, is suitable for most areas, particularly remote areas without electricity, greatly reduces the operation cost, and does not produce any waste and pollutants.
Because the distributed sewage treatment process of tradition often is the technology combination that multiple technology combined together, and process flow is complicated, so there is area big, and the cost is with high costs, the inconvenient scheduling problem of management, the utility model discloses be in the same place its inseparable combination of processing procedure, area and pipeline engineering volume have been saved greatly, have consequently reduced the construction cost, moreover, the utility model discloses degree of automation is high, and through PLC system control technology, make equipment highly integrated, intelligent, the later stage personnel administrative cost has been saved greatly, has reduced the operation cost, can realize unmanned on duty, equipment inner structure is simple, convenient operation, operation maintenance convenience. And the utility model discloses a technology mature, the play water quality of water is good, and the stable performance is reliable, makes the stable up to standard of play water.
To further explain the present invention, the following embodiments are combined to provide a micro-power A 2 The O integrated urban and rural domestic sewage treatment plant is described in detail, but they are not to be understood as limiting the scope of protection of the present invention.
Example 1
The quality of the inlet water is shown in table 1:
TABLE 1 quality of influent wastewater
Figure BDA0003549776220000051
The method comprises the following steps that (1) inlet sewage firstly passes through a fine grid to intercept larger impurities, then enters a raw water pool, the water quality and the water quantity are adjusted, then enters an anaerobic zone 2 of a shell 1 from an inlet pipeline through a raw water pump, a jet type jet stirrer 17 is adopted in the anaerobic zone 2 to push the flow of the sewage, and the retention time is 1h; the sewage after anaerobic treatment enters an anoxic tank 3 through the upper part of the clapboard, and a stirrer 7 is arranged in the anoxic tank to ensure that the sewage is fully stirred so as to be fully mixed. Under the anoxic environment, denitrifying bacteria take organic matters in the sewage as a carbon source, reduce a large amount of nitrate nitrogen in the reflux mixed liquor into nitrogen, release the nitrogen into the air, and complete the denitrification process, wherein the retention time of the sewage in the anoxic zone is 2 hours;
the middle of the anoxic zone 3 and the aerobic zone 4 is separated by a partition board, holes are arranged above the partition board, sewage treated by the anoxic zone enters the aerobic zone 4 through the upper part of the partition board, a submerged fan 8, an air lifting device 11, an aeration system 9 consisting of an aeration pipe and an aeration disc and a biological filler 10 are arranged in the aerobic zone 4, and the fan 8 firstly supplies air to the aeration system 9 in the aerobic zone 4 through an air pipeline No. 2 so as to maintain the concentration of dissolved oxygen in the aerobic zone; and supplying gas to the jet type jet stirrer of the anaerobic zone to drive the stirring of the sewage. On the other hand, the gas is supplied to the gas stripping device through a gas stripping pipeline (3) for the reflux of the nitrified liquid; the retention time of the sewage in the aerobic zone is 4 hours;
a biological filler 10 is arranged above the aeration system; under aerobic conditions, when aeration and oxygenation are carried out, the rising buoyancy of air bubbles pushes the filler and the surrounding water body to flow, when airflow passes through water flow and the filler, the airflow is fully stirred and mixed with the water flow, and the airflow is fully divided into fine bubbles, so that the contact and oxygen transfer efficiency of the biological filler and oxygen is improved; nitrified liquid flows back from the aerobic zone 4 to the anoxic zone 3 through a nitrified liquid return pipe (4);
a sedimentation zone 5 is arranged behind the aerobic zone 4, the sewage after the reaction in the aerobic zone enters the sedimentation zone through an effluent weir 12 on a middle clapboard between the aerobic zone and the sedimentation zone, an inclined plate 13 is arranged above the sedimentation zone, the sludge-water mixed liquid entering the sedimentation zone is discharged through the inclined plate 13 after the sludge-water separation in the sedimentation tank.
The return sludge is returned from the settling zone 5 to the anaerobic zone 2 by a sludge pipe sludge return pump 16 No. (5). And the external dosing system is used for dosing a medicament to the aerobic zone to more effectively remove phosphorus in the sewage.
The effluent quality is implemented according to the standard B of the primary standard in the table 1 of pollutant discharge Standard of urban Sewage treatment plant (GB 18918-2002), and the effluent quality is shown in the table 2:
table 2 design of effluent quality
Figure BDA0003549776220000061
According to the above embodiments, the present invention provides a micro-power A 2 O integrated urban and rural domestic sewage treatment device, including the body; the shell comprises an anaerobic zone, an anoxic zone, an aerobic zone and a sedimentation zone which are arranged in sequence; an aeration system and a biological filler layer are arranged in the aerobic zone. The sewage is treated by the treatment device provided by the utility model, the retention time is increased, and the effect of synchronous denitrification and dephosphorization is realized.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (3)

1. Micro-power A 2 O integrated town and rural domestic sewage treatment equipment is characterized by comprising a shell;
the shell comprises an anaerobic zone, an anoxic zone, an aerobic zone and a sedimentation zone which are arranged in sequence; the shell is divided into an anaerobic zone, an anoxic zone, an aerobic zone and a sedimentation zone by the partition board;
a disc-type aerator and a biological filler layer are arranged in the aerobic zone; the disc type aerator is arranged below the biological filler layer;
a plurality of biological packing layers are arranged according to the direction from water inlet to water outlet of sewage; the distance between two adjacent biological filler layers is 10-20 cm;
a bracket is welded in the aerobic zone;
the upper end and the lower end of the multilayer biological filler layer are fixed on the bracket;
the biological filler in the biological filler layer comprises solid filler and/or net filler; the solid filler is in the shape of a ring, a saddle, a grid plate or a corrugated plate; the shape of the net body filler is selected from saddle-shaped net or corrugated net;
a jet type jet stirrer or a submersible stirrer is arranged in the anaerobic zone; a plug flow type stirrer is arranged in the anoxic zone;
an inclined plate is arranged in the sedimentation zone.
2. Oligodynamic A according to claim 1 2 The O integrated urban and rural domestic sewage treatment device is characterized by further comprising a sludge reflux pump, wherein the sludge reflux pump is arranged outside the shell;
the sludge return pump is used for returning returned sludge from the settling zone to the anaerobic zone.
3. Oligodynamic A according to claim 1 2 O integrated town and rural domestic sewage treatment equipment is characterized in that a nitrifying liquid return pipe is arranged between an aerobic zone and an anoxic zone.
CN202220577251.6U 2022-03-16 2022-03-16 Micro-power A 2 O integrated urban and rural domestic sewage treatment device Active CN217780965U (en)

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CN202220577251.6U CN217780965U (en) 2022-03-16 2022-03-16 Micro-power A 2 O integrated urban and rural domestic sewage treatment device

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Application Number Priority Date Filing Date Title
CN202220577251.6U CN217780965U (en) 2022-03-16 2022-03-16 Micro-power A 2 O integrated urban and rural domestic sewage treatment device

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