CN115504577A - Sewage treatment system and method of activated sludge coupled electrochemical reactor - Google Patents
Sewage treatment system and method of activated sludge coupled electrochemical reactor Download PDFInfo
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- CN115504577A CN115504577A CN202211318577.8A CN202211318577A CN115504577A CN 115504577 A CN115504577 A CN 115504577A CN 202211318577 A CN202211318577 A CN 202211318577A CN 115504577 A CN115504577 A CN 115504577A
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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
- C02F3/30—Aerobic and anaerobic processes
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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
- C02F3/005—Combined electrochemical biological processes
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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
- C02F2301/00—General aspects of water treatment
- C02F2301/04—Flow arrangements
- C02F2301/043—Treatment of partial or bypass streams
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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
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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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
- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
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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
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Abstract
The invention discloses a sewage treatment system of an activated sludge coupling electrochemical reactor and a method thereof, wherein the system comprises a biological reaction tank and a secondary sedimentation tank, an anaerobic zone, an anoxic zone, an aerobic zone, a rear anoxic zone and a rear aerobic zone are sequentially arranged in the biological reaction tank, and the anaerobic zone, the anoxic zone, the aerobic zone, the rear anoxic zone and the rear aerobic zone are communicated with each other through circulation holes; a part of sewage discharged from the aerobic zone flows back to the anoxic zone, and the rest part of sewage enters the post-anoxic zone; the rear aerobic zone is connected with a secondary sedimentation tank, a part of sludge discharged from the secondary sedimentation tank flows back to the anaerobic zone, and the rest part of sludge is directly discharged; and an electrochemical reaction device is arranged in the back anoxic zone. The invention improves the efficiency of dephosphorization and denitrification by coupling the activated sludge with the electrochemical reactor and placing the electrochemical reactor in the back anoxic zone of the biological reaction tank.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to a sewage treatment system and a sewage treatment method of an activated sludge coupled electrochemical reactor.
Background
In recent years, with the rapid development of urban economy in China, the urban sewage treatment capacity is rapidly improved. The activated sludge process has been widely used in municipal sewage plants because of its advantages in energy consumption and economy.
The activated sludge method adopted by the existing urban sewage plant mainly depends on a carbon source in inlet water to remove nitrogen and phosphorus, but the carbon source in the inlet water of partial sewage treatment plants is insufficient, so that the phosphorus and nitrogen removal efficiency of the system is low, and the quality of the outlet water of the sewage treatment plant cannot meet the increasingly strict sewage treatment discharge standard.
An electrochemical reactor is a novel sewage treatment process, in the electrolysis process taking iron as an anode, elemental iron is changed into iron ions at the anode, and the iron ions and the colloid state of iron hydroxide react with phosphate in water to remove phosphorus; at the cathode, the electrons of the electrode consume H in the water + Generation of H 2 . In the whole electrolytic reaction process, hydrogen ions consumed near the cathode can offset the alkalinity consumed by hydrolysis of anode metal ions, and further the consumption of a phosphorus removal agent on the alkalinity of the system is avoided. In addition, H produced at the cathode 2 Can be utilized by denitrifying bacteria in the system to realize NO of the system 3 - -reduction of N.
Therefore, in order to solve the problem of low dephosphorization and denitrification efficiency of the system caused by insufficient carbon source of the inlet water of the sewage treatment plant, the sewage treatment system with the activated sludge coupled with the electrochemical reactor needs to be designed, so that the dephosphorization and denitrification efficiency is improved.
Disclosure of Invention
The invention aims to overcome the defects of the background technology and provides a sewage treatment system and a sewage treatment method of an activated sludge coupled electrochemical reactor.
In order to achieve the purpose, the sewage treatment system of the activated sludge coupling electrochemical reactor comprises a biological reaction tank and a secondary sedimentation tank, wherein an anaerobic zone, an anoxic zone, an aerobic zone, a rear anoxic zone and a rear aerobic zone are sequentially arranged in the biological reaction tank, and the anaerobic zone, the anoxic zone, the aerobic zone, the rear anoxic zone and the rear aerobic zone are communicated with each other through circulation holes;
a part of sewage discharged from the aerobic zone flows back to the anoxic zone, and the rest part of sewage enters the post-anoxic zone; the rear aerobic zone is connected with a secondary sedimentation tank, a part of sludge discharged from the secondary sedimentation tank flows back to the anaerobic zone, and the rest part of sludge is directly discharged;
an electrochemical reaction device is arranged in the back anoxic zone, the electrochemical reaction device comprises a direct current power supply, an electrolysis cathode and an electrolysis anode, the negative pole of the direct current power supply is connected with the electrolysis cathode, and the positive pole of the direct current power supply is connected with the electrolysis anode.
In the technical scheme, the electrolytic anode is provided with a frame body with an open top, and an iron ball is arranged in the frame body;
the iron ball is arranged at the lower part of the frame body and is contacted with the frame body, and the lower part of the frame body is provided with first holes which are obliquely arranged; the upper part of the frame body is provided with a second hole.
In the above technical scheme, the framework is a cuboid structure, the opening of the first hole is circular, and the opening of the second hole is rectangular.
In the technical scheme, the bottom of the frame body is provided with the spray head and the water pipe, one end of the water pipe is connected with the spray head, and the other end of the water pipe is connected with an external water source and is used for washing the iron balls.
In the technical scheme, the flow velocity of water flow sprayed by the spray head is 0.1-2.0 m/s.
In the technical scheme, the voltage of the direct current power supply is 0V-20V; the distance between the electrolysis cathode and the electrolysis anode is 10 cm-100 cm.
In the technical scheme, stirrers are arranged in the anaerobic zone and the anoxic zone; and aeration devices are arranged in the aerobic zone and the rear aerobic zone.
In the technical scheme, a plurality of flow impellers are arranged in the back anoxic zone, and arc chamfers are arranged on the periphery of the back anoxic zone.
In the technical scheme, a first pipeline for returning sewage is arranged between the aerobic zone and the anoxic zone, and a first pump body is arranged on the first pipeline;
and a second pipeline for sludge backflow is arranged between the secondary sedimentation tank and the anaerobic zone, and a second pump body is arranged on the second pipeline.
The invention also provides a method for treating sewage by using the system, which comprises the following steps:
s1: sewage sequentially enters an anaerobic zone, an anoxic zone and an aerobic zone;
s2: a part of sewage discharged from the aerobic zone flows back to the anoxic zone, and the rest part of sewage sequentially enters the post-anoxic zone, the post-aerobic zone and the secondary sedimentation tank;
s3: introducing air into the aerobic zone and the rear aerobic zone through a blower;
s4: mixing activated sludge and water in the anaerobic zone and the anoxic zone through a stirrer, and mixing the activated sludge, the water and the electrochemical reaction device in the back anoxic zone through a flow impeller;
s5: the direct current power supply is switched on to generate H at the electrolytic cathode 2 Realizing the denitrification of nitrate nitrogen and generating Fe at the electrolytic anode 2+ 、Fe 3+ The removal of phosphorus is realized;
s6: a part of sludge discharged from the secondary sedimentation tank flows back to the anaerobic zone, and the rest part of sludge is directly discharged;
s7: and (5) repeating the steps S1-S6 to finish the removal of nitrogen and phosphorus in the sewage.
Compared with the prior art, the invention has the following advantages:
firstly, the invention couples the activated sludge with the electrochemical reactor, the electrochemical reactor is arranged in a back anoxic zone of the biological reaction tank, at the anode, simple substance iron is changed into iron ions, the colloid state of the iron ions and iron hydroxides reacts with phosphate in water to remove phosphorus, at the cathode, electrons of the electrode consume H in the water + Generation of H 2 Culturing the hydrogen autotrophic denitrifying bacteria to realize the deep denitrification of the system, and finally realizing the deep dephosphorization and denitrification of the urban sewage through the combined action of the electrolytic anode and the cathode.
Secondly, the operation energy consumption is low, the deep removal of nitrogen and phosphorus in the sewage is realized through the electrochemical reactor, the hydrogen autotrophic denitrifying bacteria are cultured in the back anoxic zone, the energy consumption is lower than that of the traditional heterotrophic denitrifying bacteria, the removal of phosphorus can be realized through iron ions generated by the system, and the operation cost of the sewage treatment system is greatly reduced.
Thirdly, the invention has high dephosphorization and denitrification efficiency, adopts the form of continuous water inlet and continuous water outlet, is used for treating town sewage, and improves the dephosphorization and denitrification efficiency by coupling activated sludge and an electrochemical reactor and placing the electrochemical reactor into a back anoxic zone of a biological reaction tank.
Drawings
FIG. 1 is a schematic view of the structure of a sewage treatment system of an activated sludge coupled electrochemical reactor according to the present invention;
FIG. 2 is a schematic front view of an electrochemical reaction apparatus;
FIG. 3 is a schematic top view of an electrochemical reaction apparatus;
in the figure, 1-biological reaction tank, 1.1-anaerobic zone, 1.2-anoxic zone, 1.3-aerobic zone, 1.4-back anoxic zone, 1.5-back aerobic zone, 1.6-circulation hole, 2-secondary sedimentation tank, 3-electrochemical reaction device, 3.1-DC power supply, 3.2-electrolytic cathode, 3.3-electrolytic anode, 3.31-frame body, 3.32-iron ball, 3.33-first hole, 3.34-second hole, 3.35-nozzle, 3.36-water pipe, 4-stirrer, 5-aeration device, 6-impeller, 7-arc chamfer, 8-first pipeline, 9-first pump body, 10-second pipeline and 11-second pump body.
Detailed Description
The following describes the embodiments of the present invention in detail with reference to the embodiments, but they are not intended to limit the present invention and are only examples. While the advantages of the invention will be apparent and readily appreciated by the description.
As shown in fig. 1, the sewage treatment system of the activated sludge coupled electrochemical reactor of the present invention comprises a biological reaction tank 1 and a secondary sedimentation tank 2, wherein an anaerobic zone 1.1, an anoxic zone 1.2, an aerobic zone 1.3, a rear anoxic zone 1.4 and a rear aerobic zone 1.5 are sequentially arranged in the biological reaction tank 1, and the anaerobic zone 1.1, the anoxic zone 1.2, the aerobic zone 1.3, the rear anoxic zone 1.4 and the rear aerobic zone 1.5 are communicated with each other through a circulation hole 1.6; a part of sewage discharged from the aerobic zone 1.3 flows back to the anoxic zone 1.2, and the rest part of sewage enters the post-anoxic zone 1.4; the rear aerobic zone 1.5 is connected with the secondary sedimentation tank 2, a part of sludge discharged from the secondary sedimentation tank 2 flows back to the anaerobic zone 1.1, and the rest part of sludge is directly discharged; an electrochemical reaction device 3 is arranged in the back anoxic zone 1.4. Stirrers 4 are arranged in the anaerobic zone 1.1 and the anoxic zone 1.2; aeration devices 5 are arranged in the aerobic zone 1.3 and the rear aerobic zone 1.5. A plurality of flow impellers 6 are arranged in the back anoxic zone 1.4, and arc chamfers 7 are arranged around the back anoxic zone 1.4. A first pipeline 8 for returning sewage is arranged between the aerobic zone 1.3 and the anoxic zone 1.2, and a first pump body 9 is arranged on the first pipeline 8; a second pipeline 10 for returning sludge is arranged between the secondary sedimentation tank 2 and the anaerobic zone 1.1, and a second pump body 11 is arranged on the second pipeline 10.
As shown in fig. 2 and fig. 3, the electrochemical reaction device 3 includes a dc power supply 3.1, an electrolytic cathode 3.2 and an electrolytic anode 3.3, wherein a negative electrode of the dc power supply 3.1 is connected to the electrolytic cathode 3.2, and a positive electrode of the dc power supply 3.1 is connected to the electrolytic anode 3.3. The electrolytic anode 3.3 is provided with a frame body 3.31 with an open top, an iron ball 3.32 is arranged in the frame body 3.31, and a cover plate is not arranged at the top of the frame body 3.31, so that the iron ball can be conveniently added inwards; the iron ball 3.32 is arranged at the lower part of the frame body 3.31 and is contacted with the frame body, and the lower part of the frame body 3.31 is provided with a first hole 3.33 which is obliquely arranged; the upper part of the frame body 3.31 is not contacted with the iron ball, the upper part of the frame body 3.31 is provided with a second hole 3.34, and all the first holes 3.33 and the second holes 3.34 are positioned below the liquid level, so that the exchange of the inner water flow and the outer water flow of the frame body 3.31 is ensured. The frame 3.31 is a rectangular parallelepiped, the opening of the first hole 3.33 is circular, and the opening of the second hole 3.34 is rectangular. The bottom of framework 3.31 is provided with shower nozzle 3.35 and water pipe 3.36, and the one end of water pipe 3.36 links to each other with shower nozzle 3.35, and the other end of water pipe 3.36 links to each other with external water source and is used for washing iron ball 3.32, avoids forming the deposit at the iron ball. The ascending flow velocity of the water flow sprayed by the spray head 3.35 is 0.1 m/s-2.0 m/s. The voltage of the direct current power supply 3.1 is 0V-20V; the distance between the electrolytic cathode 3.2 and the electrolytic anode 3.3 is 10 cm-100 cm.
The method for treating sewage by using the system comprises the following steps:
s1: sewage sequentially enters an anaerobic zone 1.1, an anoxic zone 1.2 and an aerobic zone 1.3, a continuous water inlet and continuous water outlet mode is adopted, and the aeration gas-water ratio of the aerobic zone of the biological reaction tank is 4.5; the concentration of the activated sludge in the biological reaction tank is maintained at 3500mg/L; the sewage and part of returned sludge enter an anaerobic zone and stay for 1.0h; the sewage and part of the returned nitrified liquid enter an anoxic zone, and the retention time is 3.0h; the sewage enters an aerobic zone and stays for 6.0 hours;
s2: a part of sewage discharged from the aerobic zone 1.3 flows back to the anoxic zone 1.2, and the rest part of sewage sequentially enters a rear anoxic zone 1.4, a rear aerobic zone 1.5 and a secondary sedimentation tank 2;
s3: air is introduced into the aerobic zone 1.3 and the rear aerobic zone 1.5 through the blower; aerating in an aerobic zone by a traditional blower, and controlling DO in the aerobic zone to be more than 1.5 mg/L;
s4: mixing activated sludge and water in an anaerobic zone 1.1 and an anoxic zone 1.2 by a stirrer, and mixing the activated sludge, the water and an electrochemical reaction device in a rear anoxic zone 1.4 by a flow impeller; the sewage enters a back anoxic zone, the retention time is 2.5h, the electrochemical reactor is placed in the back anoxic zone of the biological reaction tank, and the voltage of the electrochemical reactor is 12V; the distance between the cathode inert material and the anode inert material of the electrochemical reaction device is 30cm; the anode inert material of the electrochemical reaction device is of a cuboid structure, an iron ball is arranged in the anode inert material, and the ascending flow velocity of bottom flushing water flow is 0.6m/s; the sewage enters a rear aerobic zone, the retention time is 1.0h, aeration is carried out by a traditional blower, and DO in the aerobic zone is controlled to be more than 1.5 mg/L;
s5: the direct current power supply is switched on to generate H at the electrolytic cathode 2 Realizing the denitrification of nitrate nitrogen and generating Fe at an electrolytic anode 2+ 、Fe 3+ The removal of phosphorus is realized;
s6: a part of sludge discharged from the secondary sedimentation tank 2 flows back to the anaerobic zone 1.1, and the rest part of sludge is directly discharged;
s7: and (5) repeating the steps S1-S6 to complete the removal of nitrogen and phosphorus in the sewage.
The COD of the inlet water of the invention is 230mg/L, NH 4 + N46 mg/L, TN to 48mg/L, TP to 5.4mg/. COD and NH of effluent 4 + The concentrations of-N, TN and TP were respectively 28mg/L, 0.42mg/L, 5.86mg/L and 0.24mg/L, and the removal rates were respectively 87.83%, 99.09%, 87.79% and 95.56%. The effluent quality is superior to the A standard in the local standard DB12/599-2015 of Tianjin City.
When the electrochemical reactor is not loaded in the back anoxic zone, the effluent COD and NH 4 + The concentrations of-N, TN and TP were 32mg/L, 0.45mg/L, 16.52mg/L and 1.12mg/L, respectively, and the removal rates were 86.09%, 99.02%, 65.58% and 79.26%, respectively. The removal rate of TN and TP of the system is low, and effluent can not meet the A standard in local standard DB12/599-2015 of Tianjin City, even can not meet the requirement of primary A in pollutant discharge standard of municipal wastewater treatment plant (GB 18918-2002).
The above description is only an embodiment of the present invention, and it should be noted that any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the protection scope of the present invention, and the others that are not described in detail are included in the prior art.
Claims (10)
1. The utility model provides a sewage treatment system of activated sludge coupling electrochemical reactor which characterized in that: the biological treatment device comprises a biological reaction tank (1) and a secondary sedimentation tank (2), wherein an anaerobic zone (1.1), an anoxic zone (1.2), an aerobic zone (1.3), a rear anoxic zone (1.4) and a rear aerobic zone (1.5) are sequentially arranged in the biological reaction tank (1), and the anaerobic zone (1.1), the anoxic zone (1.2), the aerobic zone (1.3), the rear anoxic zone (1.4) and the rear aerobic zone (1.5) are communicated with each other through circulation holes (1.6);
a part of sewage discharged from the aerobic zone (1.3) flows back to the anoxic zone (1.2), and the rest part of sewage enters the post-anoxic zone (1.4); the rear aerobic zone (1.5) is connected with the secondary sedimentation tank (2), a part of sludge discharged by the secondary sedimentation tank (2) flows back to the anaerobic zone (1.1), and the rest part of sludge is directly discharged;
an electrochemical reaction device (3) is arranged in the back anoxic zone (1.4), the electrochemical reaction device (3) comprises a direct current power supply (3.1), an electrolysis cathode (3.2) and an electrolysis anode (3.3), the negative electrode of the direct current power supply (3.1) is connected with the electrolysis cathode (3.2), and the positive electrode of the direct current power supply (3.1) is connected with the electrolysis anode (3.3).
2. The activated sludge coupled electrochemical reactor sewage treatment system of claim 1, wherein: the electrolytic anode (3.3) is provided with a frame body (3.31) with an open top, and an iron ball (3.32) is arranged in the frame body (3.31);
the iron ball (3.32) is arranged at the lower part of the frame body (3.31) and is contacted with the lower part of the frame body, and the lower part of the frame body (3.31) is provided with a first hole (3.33) which is obliquely arranged; the upper part of the frame body (3.31) is provided with a second hole (3.34).
3. The activated sludge coupled electrochemical reactor sewage treatment system of claim 2, wherein: frame (3.31) are the cuboid structure, the opening of first hole (3.33) is circular, the opening of second hole (3.34) is rectangle.
4. The activated sludge coupled electrochemical reactor sewage treatment system of claim 3, wherein: the bottom of framework (3.31) is provided with shower nozzle (3.35) and water pipe (3.36), the one end of water pipe (3.36) links to each other with shower nozzle (3.35), the other end of water pipe (3.36) links to each other with external water source and is used for washing iron ball (3.32).
5. The activated sludge coupled electrochemical reactor sewage treatment system of claim 4, wherein: the flow velocity of water flow sprayed by the spray head (3.35) is 0.1-2.0 m/s.
6. The sewage treatment system of an activated sludge coupled electrochemical reactor as claimed in any one of claims 1 to 5, wherein: the voltage of the direct current power supply (3.1) is 0V-20V; the distance between the electrolytic cathode (3.2) and the electrolytic anode (3.3) is 10 cm-100 cm.
7. The sewage treatment system of an activated sludge coupled electrochemical reactor as claimed in any one of claims 1 to 5, wherein: stirrers (4) are arranged in the anaerobic zone (1.1) and the anoxic zone (1.2); aeration devices (5) are arranged in the aerobic zone (1.3) and the rear aerobic zone (1.5).
8. The sewage treatment system of the activated sludge coupled electrochemical reactor as claimed in any one of claims 1 to 5, wherein: a plurality of flow impellers (6) are arranged in the rear anoxic zone (1.4), and arc chamfers (7) are arranged on the periphery of the rear anoxic zone (1.4).
9. The sewage treatment system of an activated sludge coupled electrochemical reactor as claimed in any one of claims 1 to 5, wherein: a first pipeline (8) for sewage backflow is arranged between the aerobic zone (1.3) and the anoxic zone (1.2), and a first pump body (9) is arranged on the first pipeline (8);
a second pipeline (10) for returning sludge is arranged between the secondary sedimentation tank (2) and the anaerobic zone (1.1), and a second pump body (11) is arranged on the second pipeline (10).
10. A method for sewage treatment using the system of any one of claims 1 to 9, characterized in that: the method comprises the following steps:
s1: sewage sequentially enters an anaerobic zone (1.1), an anoxic zone (1.2) and an aerobic zone (1.3);
s2: a part of sewage discharged from the aerobic zone (1.3) flows back to the anoxic zone (1.2), and the rest part of sewage sequentially enters the post-anoxic zone (1.4), the post-aerobic zone (1.5) and the secondary sedimentation tank (2);
s3: air is introduced into the aerobic zone (1.3) and the rear aerobic zone (1.5) through a blower;
s4: mixing activated sludge and water in an anaerobic zone (1.1) and an anoxic zone (1.2) through a stirrer, and mixing the activated sludge, the water and an electrochemical reaction device in a rear anoxic zone (1.4) through a flow impeller;
s5: the direct current power supply is switched on to generate H at the electrolytic cathode 2 Realizing the denitrification of nitrate nitrogen and generating Fe at the electrolytic anode 2+ 、Fe 3+ The removal of phosphorus is realized;
s6: a part of sludge discharged from the secondary sedimentation tank (2) flows back to the anaerobic zone (1.1), and the rest part of sludge is directly discharged;
s7: and (5) repeating the steps S1-S6 to finish the removal of nitrogen and phosphorus in the sewage.
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10258286A (en) * | 1997-03-18 | 1998-09-29 | Sanyo Electric Co Ltd | Waste water treatment apparatus |
| JP2003266074A (en) * | 2002-03-14 | 2003-09-24 | Sanyo Electric Co Ltd | Electrolytic sewage treatment apparatus and sewage treatment facility using the apparatus |
| KR101564297B1 (en) * | 2014-12-15 | 2015-11-03 | 주식회사 한화건설 | The advanced wastewater treatment system using membrane bioreactor combined with alternative operating anaerobic reactor and two stage coagulation |
| RU2595787C1 (en) * | 2015-06-04 | 2016-08-27 | Открытое акционерное общество "МАГНИТ" | Packed anode bed |
| CN107010736A (en) * | 2017-04-07 | 2017-08-04 | 北京工业大学 | The apparatus and method of short-cut denitrification Anammox denitrogenation coupled biological dephosphorization |
| CN111777292A (en) * | 2019-12-30 | 2020-10-16 | 重庆大学 | AOA (argon oxygen decarburization) biomembrane treatment system and method for low-carbon-nitrogen-ratio kitchen waste fermentation wastewater |
| CN215855255U (en) * | 2021-09-15 | 2022-02-18 | 湖南新锋先进材料科技有限公司 | Electrochemical degradation device for organic wastewater pollutants |
-
2022
- 2022-10-26 CN CN202211318577.8A patent/CN115504577A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10258286A (en) * | 1997-03-18 | 1998-09-29 | Sanyo Electric Co Ltd | Waste water treatment apparatus |
| JP2003266074A (en) * | 2002-03-14 | 2003-09-24 | Sanyo Electric Co Ltd | Electrolytic sewage treatment apparatus and sewage treatment facility using the apparatus |
| KR101564297B1 (en) * | 2014-12-15 | 2015-11-03 | 주식회사 한화건설 | The advanced wastewater treatment system using membrane bioreactor combined with alternative operating anaerobic reactor and two stage coagulation |
| RU2595787C1 (en) * | 2015-06-04 | 2016-08-27 | Открытое акционерное общество "МАГНИТ" | Packed anode bed |
| CN107010736A (en) * | 2017-04-07 | 2017-08-04 | 北京工业大学 | The apparatus and method of short-cut denitrification Anammox denitrogenation coupled biological dephosphorization |
| CN111777292A (en) * | 2019-12-30 | 2020-10-16 | 重庆大学 | AOA (argon oxygen decarburization) biomembrane treatment system and method for low-carbon-nitrogen-ratio kitchen waste fermentation wastewater |
| CN215855255U (en) * | 2021-09-15 | 2022-02-18 | 湖南新锋先进材料科技有限公司 | Electrochemical degradation device for organic wastewater pollutants |
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