CN112479500A - Aeration biological filtration sewage treatment device and sewage treatment system - Google Patents
Aeration biological filtration sewage treatment device and sewage treatment system Download PDFInfo
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- CN112479500A CN112479500A CN202011380585.6A CN202011380585A CN112479500A CN 112479500 A CN112479500 A CN 112479500A CN 202011380585 A CN202011380585 A CN 202011380585A CN 112479500 A CN112479500 A CN 112479500A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/003—Downstream control, i.e. outlet monitoring, e.g. to check the treating agents, such as halogens or ozone, leaving the process
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/15—N03-N
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/22—O2
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/06—Aerobic processes using submerged filters
Abstract
The invention discloses an aeration biological filtration sewage treatment device and a sewage treatment system, which comprise a prefilter connected with a buffer sedimentation tank, wherein the output end of the prefilter is respectively connected to a plurality of oxygen-enriched aeration tanks through shunt tubes; an air inflating pipe and an air extracting pipe are arranged on the oxygen-enriched aeration tank; the bottom valve of the oxygen-enriched aeration tank is connected to a hopper-shaped secondary flow storage tank; a liquid discharge hopper filled with filter materials is arranged at the upper part of the secondary flow storage pool; the output end of the liquid discharge hopper is connected to the intermediate tank; the intermediate tank is connected to the rapid aeration tank through a liquid extraction pump; the rapid aeration tank comprises a tank body; a liquid discharge pipe is arranged at the top of the tank body; the bottom of the tank body is provided with a nano aeration head; the aeration biofiltration sewage treatment device can efficiently treat sewage, the whole system adopts a buffer and flow storage mode to carry out intermittent operation, the front and rear stages can respectively carry out efficient sewage treatment, the intermittence is short, and the treated sewage can be supplied with industrial water.
Description
Technical Field
The invention relates to a sewage treatment system, in particular to an aeration biological filtration sewage treatment device and a sewage treatment system, and belongs to the technical field of sewage treatment systems.
Background
The existing biological aerated filter has inherent defects, firstly, the general requirements of inflow water such as COD, ammonia nitrogen and SS are low, and the whole BAF system is easily impacted when the inflow water quality fluctuates; secondly, after the biological aerated filter is used for a long time, a large amount of clear water is needed for backwashing the biological aerated filter, and the backwashing frequency is high; thirdly, BAF only converts ammonia nitrogen into nitro nitrogen through aerobic nitration reaction, but can not remove total nitrogen; for this reason, chinese patent application No.: 201811347326.6, discloses an aeration biological filtration sewage treatment device, which has strong impact resistance, can remove organic matters, total nitrogen and total phosphorus in the wastewater simultaneously, and has low back flush frequency of a biological anoxic reaction zone; the invention also provides a sewage treatment system comprising the device, which has strong impact resistance, good water treatment effect and more energy conservation; but the treatment efficiency is too low, and the sewage treatment depth is not enough, so that the requirement of subsequent industrial application cannot be met.
Disclosure of Invention
In order to solve the problems, the invention provides an aeration biological filtration sewage treatment device and a sewage treatment system, which can carry out high-efficiency treatment on sewage, and the treated sewage can be supplied with industrial water.
The invention relates to an aeration biological filtration sewage treatment device, which comprises a prefilter connected with a buffer sedimentation tank, wherein the output end of the prefilter is respectively connected to a plurality of oxygen-enriched aeration tanks through flow dividing pipes; an air inflating pipe and an air extracting pipe are arranged on the oxygen-enriched aeration tank; the bottom valve of the oxygen-enriched aeration tank is connected to a hopper-shaped secondary flow storage tank; a liquid discharge hopper filled with filter materials is arranged at the upper part of the secondary flow storage pool; the output end of the liquid discharge hopper is connected to the intermediate tank; the intermediate tank is connected to the rapid aeration tank through a liquid extraction pump; the rapid aeration tank comprises a tank body; a liquid discharge pipe is arranged at the top of the tank body; the bottom of the tank body is provided with a nano aeration head; the tank side is connected to an intermediate tank through a return valve; a water-hydrogen key breaker is arranged in the tank body; an oxygen content detector is arranged in the intermediate tank; the drain pipe is connected to the anaerobic tank; a flow guide cover is arranged at the bottom of the inner side of the anaerobic tank; an air extraction head is arranged on the inner side of the air guide sleeve; the bottom of the anaerobic tank is connected to an anaerobic tank; a detection tank is arranged in the middle of the anaerobic tank; the detection tank is connected to the top of the anaerobic tank through a circulating pump; a nitrate concentration transmitter, a carbon source injection pipeline and a denitrifying strain metering and injection pipeline are arranged at the detection tank; the nitrate concentration transmitter, the carbon source injection pipeline and the denitrifying bacteria metering and injection pipeline are linked through a controller; an external discharge pipeline is arranged outside the anaerobic tank; and a water quality detector is arranged on the outer discharge pipeline.
Further, after the nitrate concentration transmitter acquires the concentration, the denitrifying bacteria metering and injection pipeline does not act, the controller starts the delay timing module, the delay timing time is not less than 10S, and the nitrate concentration transmitter acquires the concentration again; and if the concentration is not reduced to the preset value, starting a denitrifying strain metering and injecting pipeline, monitoring in real time by a nitrate concentration transmitter after the denitrifying strain metering and injecting pipeline finishes one-time adding, and enabling the time interval between the denitrifying strain metering and the adding before and after the injecting pipeline to be not less than 10 s.
Further, the denitrifying bacteria metering and injecting pipeline comprises a dilution tank, and the dilution tank is connected to the detection tank through a metering valve and a switch valve; the metering valve is connected to the controller.
Further, mud discharge pipes are arranged at the bottoms of the secondary flow storage tank, the intermediate tank and the anaerobic tank; an upper valve and a lower valve are arranged on the mud discharging pipe; an outer discharge hopper is arranged between the upper valve and the lower valve; and a mud discharging screw is arranged at the bottom of the mud discharging pipe.
Further, the apparatus works as follows:
a. collecting and pre-filtering sewage, and allowing the sewage to enter a buffer sedimentation tank for sedimentation for at least half an hour; after the precipitation is finished, the sewage enters the flow dividing pipe through the pre-filter;
b. pre-aeration, distributing sewage to each oxygen-enriched aeration tank by a flow dividing pipe, pumping air or air and oxygen mixed gas into water inside the aeration tank by using a pumping pipe on the aeration tank, and pumping air or the air and oxygen mixed gas through a pumping pipe at the top of the aeration tank; the aeration time is not less than 5 minutes; after the preliminary aeration is finished, the sewage enters a secondary flow storage tank through an electric bottom valve;
c. carrying out rapid and efficient aeration, wherein sewage entering a secondary flow storage pool is subjected to flow storage, then permeates through water pressure to fill a filter material and enters a liquid discharge hopper, enters an intermediate tank through an overflow hole in the liquid discharge hopper, enters the intermediate tank, and is pumped into a rapid aeration tank through a liquid pump; the bottom of the tank body is provided with a nano aeration head; the tank side is connected to an intermediate tank through a return valve; a water-hydrogen key breaker is arranged in the tank body; the nano aeration head aerates the sewage, and meanwhile, the water-hydrogen bond breaker quickly breaks up molecular clusters in the sewage, and the molecular clusters and the intermediate tank circulate, until an oxygen content detector in the intermediate tank reaches an index, the liquid extraction pump stops acting, liquid in the intermediate tank can comprehensively and synchronously treat the sewage entering a secondary flow storage tank, organic matters are quickly removed finely, dephosphorization and nitration reactions are quickly carried out, ammonia nitrogen is converted into nitronitrogen, and the sewage in the intermediate tank is used as a rear-stage large treatment liquid and is also used as a front-stage accelerated reaction liquid; after the water level of the intermediate tank reaches a preset height, pumping sewage into the anaerobic tank through a liquid pump and a liquid discharge pipe at the top of the tank body;
d. performing efficient anaerobic treatment, wherein sewage enters an anaerobic tank; an anoxic denitrification reaction is carried out, the nitro nitrogen is converted into nitrogen, and the nitrogen is quickly pumped out of the anaerobic tank by using the air pumping head; the anaerobic tank and the anaerobic tank are internally circulated; a detection tank is arranged on the circulating pipeline; a nitrate concentration transmitter, a carbon source injection pipeline and a denitrifying strain metering and injection pipeline are arranged on the detection tank; the nitrate concentration is monitored in real time through a nitrate concentration transmitter, and feedback is carried out through the denitrifying strain metering and injection pipeline, the sewage in the anaerobic tank is used as pre-stage anaerobic neutralization water to accelerate the anaerobic treatment of the sewage pumped into the rapid aeration tank, and the sewage is discharged through an external discharge pipeline after multiple cycles;
e. and (3) discharging the treated water, wherein the sewage subjected to aeration and anaerobic treatment enters an external discharge pipeline, the quality of the water body is monitored by a water quality detector on the external discharge pipeline, the sewage is discharged when the quality is qualified, and otherwise, the sewage flows back to the anaerobic tank for secondary treatment.
A sewage treatment system comprises the aeration biofiltration sewage treatment device.
Compared with the prior art, the aeration biofiltration sewage treatment device and the sewage treatment system can efficiently treat sewage, the whole system adopts buffer and flow storage modes to carry out intermittent operation, the front and rear stages can respectively carry out efficient sewage treatment, the intermittence is short, and the treated sewage can be supplied for industrialization.
Drawings
Fig. 1 is a schematic view of the overall structure of embodiment 1 of the present invention.
FIG. 2 is a schematic view of the structure of a denitrifying bacteria metering and injection line in example 1 of the present invention.
Fig. 3 is a schematic overall structure diagram of an embodiment of the present invention.
Detailed Description
Example 1:
as shown in figure 1, the aeration biological filtration sewage treatment device comprises a pre-filter 1 connected with a buffer sedimentation tank, wherein the output end of the pre-filter 1 is respectively connected to a plurality of oxygen-enriched aeration tanks 2 through shunt tubes; an air inflating pipe 3 and an air extracting pipe 4 are arranged on the oxygen-enriched aeration tank 2; the bottom valve of the oxygen-enriched aeration tank 2 is connected to a hopper-shaped secondary flow storage tank 5; a liquid discharge hopper 6 filled with filter materials is arranged at the upper part of the secondary flow storage pool 5; the output end of the liquid discharge hopper 6 is connected to the intermediate tank 7; the intermediate tank 7 is connected to the rapid aeration tank through a liquid extraction pump 8; the rapid aeration tank comprises a tank body 9; a liquid discharge pipe 10 is arranged at the top of the tank body 9; the bottom of the tank body 10 is provided with a nano aeration head 11; the side of the tank 9 is connected to the intermediate tank 7 through a return valve 12; a water-hydrogen key breaker 13 is arranged in the tank body 9; an oxygen content detector 14 is arranged in the intermediate tank 7; the drain pipe 10 is connected to an anaerobic tank 15; a flow guide cover 16 is arranged at the bottom of the inner side of the anaerobic tank 15; an air extraction head 17 is arranged on the inner side of the air guide sleeve 16; the bottom of the anaerobic tank 15 is connected to an anaerobic pool 18; a detection tank 19 is arranged in the middle of the anaerobic tank 18; the detection tank 19 is connected to the top of the anaerobic tank 15 through a circulating pump 20; a nitrate concentration transmitter 21, a carbon source injection pipeline and a denitrifying strain metering and injection pipeline 22 are arranged at the position of the detection tank 19; the nitrate concentration transmitter 21, the carbon source injection pipeline and the denitrifying bacteria metering and injection pipeline 22 are linked through a controller; an external discharge pipeline 23 is arranged outside the anaerobic tank 15; and a water quality detector 24 is arranged on the external discharge pipeline 23.
After the nitrate concentration transmitter acquires the concentration, the denitrifying bacteria metering and injection pipeline does not act, the controller starts the delay timing module, the delay timing time is not less than 10S, and the nitrate concentration transmitter acquires the concentration again; and if the concentration is not reduced to the preset value, starting a denitrifying strain metering and injecting pipeline, monitoring in real time by a nitrate concentration transmitter after the denitrifying strain metering and injecting pipeline finishes one-time adding, and enabling the time interval between the denitrifying strain metering and the adding before and after the injecting pipeline to be not less than 10 s.
As shown in fig. 2, the denitrifying bacteria species metering and injecting line 22 includes a dilution tank 221, and the dilution tank 221 is connected to the test tank 19 through a metering valve 222 and an on-off valve 223; the metering valve is connected to the controller.
Further, the apparatus works as follows:
a. collecting and pre-filtering sewage, and allowing the sewage to enter a buffer sedimentation tank for sedimentation for at least half an hour; after the precipitation is finished, the sewage enters the flow dividing pipe through the pre-filter;
b. pre-aeration, distributing sewage to each oxygen-enriched aeration tank by a flow dividing pipe, pumping air or air and oxygen mixed gas into water inside the aeration tank by using a pumping pipe on the aeration tank, and pumping air or the air and oxygen mixed gas through a pumping pipe at the top of the aeration tank; the aeration time is not less than 5 minutes; after the preliminary aeration is finished, the sewage enters a secondary flow storage tank through an electric bottom valve;
c. carrying out rapid and efficient aeration, wherein sewage entering a secondary flow storage pool is subjected to flow storage, then permeates through water pressure to fill a filter material and enters a liquid discharge hopper, enters an intermediate tank through an overflow hole in the liquid discharge hopper, enters the intermediate tank, and is pumped into a rapid aeration tank through a liquid pump; the bottom of the tank body is provided with a nano aeration head; the tank side is connected to an intermediate tank through a return valve; a water-hydrogen key breaker is arranged in the tank body and can be operated in the modes of magnetization, biology, infrared radiation and the like; the nano aeration head aerates the sewage, and meanwhile, the water-hydrogen bond breaker quickly breaks up molecular clusters in the sewage, and the molecular clusters and the intermediate tank circulate, until an oxygen content detector in the intermediate tank reaches an index, the liquid extraction pump stops acting, liquid in the intermediate tank can comprehensively and synchronously treat the sewage entering a secondary flow storage tank, organic matters are quickly removed finely, dephosphorization and nitration reactions are quickly carried out, ammonia nitrogen is converted into nitronitrogen, and the sewage in the intermediate tank is used as a rear-stage large treatment liquid and is also used as a front-stage accelerated reaction liquid; after the water level of the intermediate tank reaches a preset height, pumping sewage into the anaerobic tank through a liquid pump and a liquid discharge pipe at the top of the tank body;
d. performing efficient anaerobic treatment, wherein sewage enters an anaerobic tank; an anoxic denitrification reaction is carried out, the nitro nitrogen is converted into nitrogen, and the nitrogen is quickly pumped out of the anaerobic tank by using the air pumping head; the anaerobic tank and the anaerobic tank are internally circulated; a detection tank is arranged on the circulating pipeline; a nitrate concentration transmitter, a carbon source injection pipeline and a denitrifying strain metering and injection pipeline are arranged on the detection tank; the nitrate concentration is monitored in real time through a nitrate concentration transmitter, and feedback is carried out through the denitrifying strain metering and injection pipeline, the sewage in the anaerobic tank is used as pre-stage anaerobic neutralization water to accelerate the anaerobic treatment of the sewage pumped into the rapid aeration tank, and the sewage is discharged through an external discharge pipeline after multiple cycles;
e. and (3) discharging the treated water, wherein the sewage subjected to aeration and anaerobic treatment enters an external discharge pipeline, the quality of the water body is monitored by a water quality detector on the external discharge pipeline, the sewage is discharged when the quality is qualified, and otherwise, the sewage flows back to the anaerobic tank for secondary treatment.
In still another embodiment, as shown in fig. 3, the secondary flow storage tank 5, the intermediate tank 7 and the anaerobic tank 18 are provided with mud discharge pipes 25 at the bottom; an upper valve 26 and a lower valve 27 are arranged on the mud discharging pipe 25; an outer discharge hopper 28 is arranged between the upper valve 26 and the lower valve 27; the bottom of the mud discharging pipe 25 is provided with a mud discharging screw 29, and the upper valve and the lower valve are opened one by one, so that the bottoms of the secondary flow storage tank 5, the intermediate tank 7 and the anaerobic tank 18 are always in a closed state, and after being concentrated by the outer discharge hopper, the mud is discharged by the mud discharging screw.
A sewage treatment system comprises the aeration biofiltration sewage treatment device.
The above-described embodiments are merely preferred embodiments of the present invention, and all equivalent changes or modifications of the structures, features and principles described in the claims of the present invention are included in the scope of the present invention.
Claims (6)
1. An aeration biofiltration sewage treatment plant which is characterized in that: the device comprises a pre-filter connected with a buffer sedimentation tank, wherein the output end of the pre-filter is respectively connected to a plurality of oxygen-enriched aeration tanks through shunt tubes; an air inflating pipe and an air extracting pipe are arranged on the oxygen-enriched aeration tank; the bottom valve of the oxygen-enriched aeration tank is connected to a hopper-shaped secondary flow storage tank; a liquid discharge hopper filled with filter materials is arranged at the upper part of the secondary flow storage pool; the output end of the liquid discharge hopper is connected to the intermediate tank; the intermediate tank is connected to the rapid aeration tank through a liquid extraction pump; the rapid aeration tank comprises a tank body; a liquid discharge pipe is arranged at the top of the tank body; the bottom of the tank body is provided with a nano aeration head; the tank side is connected to an intermediate tank through a return valve; a water-hydrogen key breaker is arranged in the tank body; an oxygen content detector is arranged in the intermediate tank; the drain pipe is connected to the anaerobic tank; a flow guide cover is arranged at the bottom of the inner side of the anaerobic tank; an air extraction head is arranged on the inner side of the air guide sleeve; the bottom of the anaerobic tank is connected to an anaerobic tank; a detection tank is arranged in the middle of the anaerobic tank; the detection tank is connected to the top of the anaerobic tank through a circulating pump; a nitrate concentration transmitter, a carbon source injection pipeline and a denitrifying strain metering and injection pipeline are arranged at the detection tank; the nitrate concentration transmitter, the carbon source injection pipeline and the denitrifying bacteria metering and injection pipeline are linked through a controller; an external discharge pipeline is arranged outside the anaerobic tank; and a water quality detector is arranged on the outer discharge pipeline.
2. An aerated biofiltration wastewater treatment unit as claimed in claim 1, wherein: after the nitrate concentration transmitter acquires the concentration, the denitrifying bacteria metering and injection pipeline does not act, the controller starts the delay timing module, the delay timing time is not less than 10S, and the nitrate concentration transmitter acquires the concentration again; and if the concentration is not reduced to the preset value, starting a denitrifying strain metering and injecting pipeline, monitoring in real time by a nitrate concentration transmitter after the denitrifying strain metering and injecting pipeline finishes one-time adding, and enabling the time interval between the denitrifying strain metering and the adding before and after the injecting pipeline to be not less than 10 s.
3. An aerated biofiltration wastewater treatment unit as claimed in claim 1, wherein: the denitrifying strain metering and injecting pipeline comprises a dilution tank, and the dilution tank is connected to the detection tank through a metering valve and a switch valve; the metering valve is connected to the controller.
4. An aerated biofiltration wastewater treatment unit as claimed in claim 1, wherein: the device works as follows:
a. collecting and pre-filtering sewage, and allowing the sewage to enter a buffer sedimentation tank for sedimentation for at least half an hour; after the precipitation is finished, the sewage enters the flow dividing pipe through the pre-filter;
b. pre-aeration, distributing sewage to each oxygen-enriched aeration tank by a flow dividing pipe, pumping air or air and oxygen mixed gas into water inside the aeration tank by using a pumping pipe on the aeration tank, and pumping air or the air and oxygen mixed gas through a pumping pipe at the top of the aeration tank; the aeration time is not less than 5 minutes; after the preliminary aeration is finished, the sewage enters a secondary flow storage tank through an electric bottom valve;
c. carrying out rapid and efficient aeration, wherein sewage entering a secondary flow storage pool is subjected to flow storage, then permeates through water pressure to fill a filter material and enters a liquid discharge hopper, enters an intermediate tank through an overflow hole in the liquid discharge hopper, enters the intermediate tank, and is pumped into a rapid aeration tank through a liquid pump; the bottom of the tank body is provided with a nano aeration head; the tank side is connected to an intermediate tank through a return valve; a water-hydrogen key breaker is arranged in the tank body; the nano aeration head aerates the sewage, and meanwhile, the water-hydrogen bond breaker quickly breaks up molecular clusters in the sewage, and the molecular clusters and the intermediate tank circulate, until an oxygen content detector in the intermediate tank reaches an index, the liquid extraction pump stops acting, liquid in the intermediate tank can comprehensively and synchronously treat the sewage entering a secondary flow storage tank, organic matters are quickly removed finely, dephosphorization and nitration reactions are quickly carried out, ammonia nitrogen is converted into nitronitrogen, and the sewage in the intermediate tank is used as a rear-stage large treatment liquid and is also used as a front-stage accelerated reaction liquid; after the water level of the intermediate tank reaches a preset height, pumping sewage into the anaerobic tank through a liquid pump and a liquid discharge pipe at the top of the tank body;
d. performing efficient anaerobic treatment, wherein sewage enters an anaerobic tank; an anoxic denitrification reaction is carried out, the nitro nitrogen is converted into nitrogen, and the nitrogen is quickly pumped out of the anaerobic tank by using the air pumping head; the anaerobic tank and the anaerobic tank are internally circulated; a detection tank is arranged on the circulating pipeline; a nitrate concentration transmitter, a carbon source injection pipeline and a denitrifying strain metering and injection pipeline are arranged on the detection tank; the nitrate concentration is monitored in real time through a nitrate concentration transmitter, feedback linkage is carried out through a carbon source injection pipeline and a denitrifying strain metering and injection pipeline, and total nitrogen is removed through denitrification of the carbon source injection pipeline; the sewage in the anaerobic tank is used as preceding anaerobic neutralization water to accelerate the anaerobic treatment of the sewage pumped into the rapid aeration tank, and the sewage is discharged through an external discharge pipeline after being circulated for many times;
e. and (3) discharging the treated water, wherein the sewage subjected to aeration and anaerobic treatment enters an external discharge pipeline, the quality of the water body is monitored by a water quality detector on the external discharge pipeline, the sewage is discharged when the quality is qualified, and otherwise, the sewage flows back to the anaerobic tank for secondary treatment.
5. An aerated biofiltration wastewater treatment unit as claimed in claim 1, wherein: mud discharge pipes are arranged at the bottoms of the secondary flow storage tank, the intermediate tank and the anaerobic tank; an upper valve and a lower valve are arranged on the mud discharging pipe; an outer discharge hopper is arranged between the upper valve and the lower valve; and a mud discharging screw is arranged at the bottom of the mud discharging pipe.
6. A sewage treatment system comprising an aerated biofiltration sewage treatment unit as claimed in any one of claims 1 to 9.
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| CN202011380585.6A CN112479500A (en) | 2020-12-01 | 2020-12-01 | Aeration biological filtration sewage treatment device and sewage treatment system |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1234374A (en) * | 1999-03-22 | 1999-11-10 | 关品三 | Oxygen-gathering, activating and aerating oxygenating machine |
| CN209178189U (en) * | 2018-10-23 | 2019-07-30 | 山东天一水务工程有限公司 | CAST technique and four class water sewage treatment unmanned plane of biofilm |
| CN209322670U (en) * | 2018-12-21 | 2019-08-30 | 太原市润民环保节能有限公司 | Pressure air-dissolving is aerated denitrogenation biological filter |
| US20190315643A1 (en) * | 2018-04-12 | 2019-10-17 | Doosan Heavy Industries & Construction Co., Ltd. | Method and apparatus for biologically treating nitrogen |
| CN111675450A (en) * | 2020-07-23 | 2020-09-18 | 南京林业大学 | Biological aerated filter and ultraviolet disinfection equipment integrated system |
| CN111875073A (en) * | 2020-07-15 | 2020-11-03 | 广东酌希投资控股有限公司 | Water environment system breeds |
-
2020
- 2020-12-01 CN CN202011380585.6A patent/CN112479500A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1234374A (en) * | 1999-03-22 | 1999-11-10 | 关品三 | Oxygen-gathering, activating and aerating oxygenating machine |
| US20190315643A1 (en) * | 2018-04-12 | 2019-10-17 | Doosan Heavy Industries & Construction Co., Ltd. | Method and apparatus for biologically treating nitrogen |
| CN209178189U (en) * | 2018-10-23 | 2019-07-30 | 山东天一水务工程有限公司 | CAST technique and four class water sewage treatment unmanned plane of biofilm |
| CN209322670U (en) * | 2018-12-21 | 2019-08-30 | 太原市润民环保节能有限公司 | Pressure air-dissolving is aerated denitrogenation biological filter |
| CN111875073A (en) * | 2020-07-15 | 2020-11-03 | 广东酌希投资控股有限公司 | Water environment system breeds |
| CN111675450A (en) * | 2020-07-23 | 2020-09-18 | 南京林业大学 | Biological aerated filter and ultraviolet disinfection equipment integrated system |
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Application publication date: 20210312 |