CN106348436B - Biological phosphorus removal device for sewage biochemical treatment - Google Patents
Biological phosphorus removal device for sewage biochemical treatment Download PDFInfo
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- CN106348436B CN106348436B CN201610957859.0A CN201610957859A CN106348436B CN 106348436 B CN106348436 B CN 106348436B CN 201610957859 A CN201610957859 A CN 201610957859A CN 106348436 B CN106348436 B CN 106348436B
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- shell
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- phosphorus removal
- phosphorus
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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
- C02F3/28—Anaerobic digestion 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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/105—Phosphorus compounds
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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
- C02F2203/00—Apparatus and plants for the biological treatment of water, waste water or sewage
- C02F2203/006—Apparatus and plants for the biological treatment of water, waste water or sewage details of construction, e.g. specially adapted seals, modules, connections
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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
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- Life Sciences & Earth Sciences (AREA)
- Microbiology (AREA)
- Biodiversity & Conservation Biology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
- Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
Abstract
The invention discloses a biological phosphorus remover for biochemical treatment of sewage, which comprises a shell (2) and a cover (1) which is matched and connected with the shell (2), wherein a mixed liquid inlet (12) is formed in the shell (2); a sludge filter (3) is arranged in the inner cavity of the shell (2), and a cavity is formed between the sludge filter (3) and the shell (2); the inlet of the ejector (11) is positioned in the sludge filter (3), and the outlet pipe (4) of the ejector (11) is connected with an outlet (6) through a first valve (5) and a high-phosphorus water outlet (10) through a second valve (9); ejector (11) be connected with compressed air pipe (8) just compressed air pipe on adorn third valve (7). The biological phosphorus remover can ensure the phosphorus removal effect, does not need to discharge excess sludge and does not need to add phosphorus removal water treatment agents and is used for biochemical sewage treatment.
Description
Technical Field
The invention relates to a phosphorus removal device, in particular to a biological phosphorus removal device used in biochemical treatment of sewage.
Background
Phosphorus is a necessary nutrient element for all living bodies, is also an 'original inland' of water eutrophication, and exists in sewage, particularly domestic sewage in large quantity, so that the phosphorus needs to be removed in the sewage treatment process.
At present, the phosphorus removal method mainly comprises a biological phosphorus removal method and a chemical precipitation phosphorus removal method. Phosphorus in sewage (mainly existing in the form of orthophosphate) is removed by forming chemical precipitation with aluminum salt and iron salt (such as aluminum phosphate or magnesium phosphate). The biological phosphorus removal is realized by arranging an anaerobic tank and an aerobic tank in the treatment process flow, wherein the phosphorus-accumulating bacteria in the anaerobic tank absorb Volatile Fatty Acid (VFA) and store the VFA in a cell body in the form of beta-hydroxybutyric acid (PHB), when the mixed liquid enters the aerobic tank, the PHB in the phosphorus-accumulating bacteria is stored for the growth of the phosphorus-accumulating bacteria, and simultaneously absorbs a large amount of phosphate in water, at the moment, the phosphorus-accumulating bacteria in the aerobic tank have high-content polyphosphate, and the biological phosphorus removal can be realized by discharging residual sludge out of the system.
The chemical precipitation dephosphorization method has the following defects: 1. by removing only phosphorus in the orthophosphate form and not in other forms (such as organophosphorus); 2. water treatment agents (such as aluminum salt and iron salt) need to be added, and the agents bring certain troubles to special biological treatment processes (such as fouling and blocking of MBR membranes); 3. the treatment process is long and the investment is large.
The biological phosphorus removal also has the following defects: a large amount of activated sludge is required to be lost, the stability of a biological treatment system is influenced, and the concentration of the activated sludge in the system is reduced.
Disclosure of Invention
The invention aims to solve the technical problem of providing a biological phosphorus remover for biochemical sewage treatment, which can ensure the phosphorus removal effect, does not need to discharge excess sludge and add phosphorus removal water treatment agents.
In order to solve the technical problem, the biological phosphorus remover for biochemical treatment of sewage comprises a shell and a cover which is matched and connected with the shell, wherein a mixed liquid inlet is formed in the shell; a sludge filter is arranged in the inner cavity of the shell, and a space is formed between the sludge filter and the shell; the inlet of the ejector is positioned in the sludge filter, and the outlet pipe of the ejector is connected with an outlet through a first valve and a high-phosphorus water outlet through a second valve; the ejector is connected with a compressed air pipe, and a third valve is arranged on the compressed air pipe.
The filtering precision of the sludge filter is about 0.1-1.0mm.
The first valve is an automatic valve.
The second valve is an automatic valve.
The third valve is an automatic valve.
The mixed liquid inlet is arranged at the lower part of the shell.
The mixed liquid inlet is arranged at the axial center of the lower part of the shell.
The sludge filter is positioned at the axial center of the inner cavity of the shell.
The shell is of a cylindrical structure.
The ejector is positioned at the axial center of the inner cavity of the sludge filter.
The biological phosphorus removal device for biochemical treatment of sewage adopting the technical scheme is arranged in an aerobic tank in a sewage treatment system, the filtering precision is about 0.1-1.0mm, and the separation of activated sludge and water can be realized; the effluent at the outlet is directly discharged into the aerobic tank, and the effluent at the high-phosphorus water outlet is discharged out of the system; the mixed liquid of the activated sludge and the sewage generates negative pressure under the action of compressed air through the ejector, the mixed liquid continuously enters the shell from the mixed liquid inlet, the activated sludge is intercepted in the space between the sludge filter and the shell under the interception of the sludge filter, and water is discharged into the aerobic tank after penetrating through the sludge filter, the outlet pipe, the first valve and the outlet. When the time is up to the set time, the entering of the mixed liquid is stopped. Because the phosphorus removal device and the aerobic tank are basically isolated, oxygen is difficult to enter the shell, and simultaneously, because the concentration of activated sludge in the shell is high, the activated sludge is in an anaerobic state, and at the moment, a large amount of phosphorus is released from the sludge in the shell into a water body. When the time lasts for the set time, the compressed air enters from the compressed air pipe, the liquid in the shell is finally discharged out of the system from the second valve and the high-phosphorus water outlet through the ejector and the outlet pipe, and the first valve is in a closed state. The water discharged from the high-phosphorus water outlet has high phosphorus content, so that phosphorus in the system can be continuously removed.
And after dephosphorization, closing the first valve and the second valve, continuously charging compressed air from the compressed air pipe, and discharging the dephosphorized sludge in the shell into the aerobic tank from the mixed liquid inlet.
At this point, a phosphorus removal work cycle is completed, and the process is repeated.
The method aims at deeply removing the total phosphorus in the phosphorus-containing sewage, has the advantages that residual sludge does not need to be discharged out of the system, the concentration of activated sludge of a biological treatment system is not influenced, and a phosphorus-removing water treatment agent does not need to be added; the structure is simple and flexible.
In conclusion, the biological phosphorus remover for the biochemical treatment of the sewage can ensure the phosphorus removal effect, does not need to discharge excess sludge and does not need to add phosphorus removal water treatment agents.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Detailed Description
The invention will be further explained with reference to the drawings.
Referring to fig. 1, a biological phosphorus removal device for biochemical treatment of sewage, a housing 2 is a cylindrical structure. Comprises a shell 2 and a cover 1 which is matched and connected with the shell 2, wherein a mixed liquid inlet 12 is arranged on the shell 2; a sludge filter 3 is arranged in the inner cavity of the shell 2, and a space is formed between the sludge filter 3 and the shell 2; the inlet of the ejector 11 is positioned in the sludge filter 3, and the outlet pipe 4 of the ejector 11 is connected with an outlet 6 through a first valve 5 and a high-phosphorus water outlet 10 through a second valve 9; the ejector 11 is connected with a compressed air pipe 8, and a third valve 7 is arranged on the compressed air pipe. The third valve 7 controls the admission of compressed air into the compressed air line 8.
Specifically, the filtering precision of the sludge filter 3 is about 0.1-1.0mm.
Specifically, the mixed liquid inlet 12 is provided at a lower portion of the casing 2. Preferably, mixed liquid inlet 12 is provided at the axial center of the lower portion of casing 2.
Preferably, the sludge filter 3 is axially centred in the inner cavity of said housing 2.
The ejector 11 is positioned at the axial center of the inner cavity of the sludge filter 3.
Referring to fig. 1, the biological phosphorus removal device for biochemical treatment of sewage is installed in an aerobic tank in a sewage treatment system, the effluent from an outlet 6 is directly discharged into the aerobic tank, and the effluent from a high-phosphorus water outlet 10 is discharged out of the system, and the working process is as follows: the mixed liquid of the activated sludge and the sewage is subjected to negative pressure in the shell 2 under the action of compressed air through the ejector 11, is continuously sucked from the mixed liquid inlet 12 and enters the phosphorus remover shell 2, the activated sludge is intercepted in a space between the sludge filter 3 and the phosphorus remover shell 2 under the interception of the sludge filter 3, and water is discharged into the aerobic tank after penetrating through the sludge filter 3, the outlet pipe 4, the first valve 5 and the outlet 6. When the time is up to the set time, the suction of the mixed liquid is stopped.
Because the phosphorus removal device and the aerobic tank are basically isolated, oxygen is difficult to enter the shell 2, and simultaneously, because the concentration of the activated sludge in the shell 2 is high, the activated sludge is in an anaerobic state, and at the moment, a large amount of phosphorus is released from the sludge in the shell 2 into the water body.
When the time is up to the set time, the compressed air enters from the compressed air pipe 8, passes through the ejector 11 and the outlet pipe 4, and finally the liquid in the shell 2 is discharged out of the system from the second valve 9 and the high-phosphorus water outlet 10, and the first valve 5 is in a closed state. The water discharged from the high phosphorus water outlet 10 has a high phosphorus content, so that phosphorus in the system can be continuously removed.
After dephosphorization, the first valve 5 and the second valve 9 are closed, compressed air is continuously filled from the compressed air pipe 8, and the sludge after dephosphorization in the shell 2 is discharged into the aerobic tank from the mixed liquid inlet 12.
At this point, a phosphorus removal work cycle is completed, and the process is repeated.
Claims (8)
1. A biological phosphorus removal device for biochemical treatment of sewage is characterized in that: the biological phosphorus removal device is arranged in an aerobic tank in a sewage treatment system, and comprises a shell (2) and a cover (1) which is matched and connected with the shell (2), wherein a mixed liquid inlet (12) is formed in the shell (2); a sludge filter (3) is arranged in the inner cavity of the shell (2), and a space is formed between the sludge filter (3) and the shell (2); the inlet of the ejector (11) is positioned in the sludge filter (3), and the outlet pipe (4) of the ejector (11) is connected with an outlet (6) through a first valve (5) and a high-phosphorus water outlet (10) through a second valve (9); the ejector (11) is connected with a compressed air pipe (8) and the compressed air pipe is provided with a third valve (7); the mixed liquid inlet (12) is arranged at the lower part of the shell (2); the mixed liquid inlet (12) is arranged at the axial center of the lower part of the shell (2).
2. The biological phosphorus removal device for biochemical treatment of sewage according to claim 1, wherein: the filtering precision of the sludge filter (3) is about 0.1-1.0mm.
3. The biological phosphorus removal device for biochemical treatment of sewage according to claim 1 or 2, wherein: the first valve (5) is an automatic valve.
4. The biological phosphorus removal device for biochemical treatment of sewage according to claim 1 or 2, wherein: the second valve (9) is an automatic valve.
5. The biological phosphorus removal device for biochemical treatment of sewage according to claim 1 or 2, wherein: the third valve (7) is an automatic valve.
6. The biological phosphorus removal device for biochemical treatment of sewage according to claim 1 or 2, wherein: the sludge filter (3) is positioned at the axial center of the inner cavity of the shell (2).
7. The biological phosphorus removal device for biochemical treatment of sewage according to claim 1 or 2, wherein: the shell (2) is of a cylindrical structure.
8. The biological phosphorus removal device for biochemical treatment of sewage according to claim 1 or 2, wherein: the ejector (11) is positioned at the axial center of the inner cavity of the sludge filter (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610957859.0A CN106348436B (en) | 2016-10-28 | 2016-10-28 | Biological phosphorus removal device for sewage biochemical treatment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610957859.0A CN106348436B (en) | 2016-10-28 | 2016-10-28 | Biological phosphorus removal device for sewage biochemical treatment |
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| Publication Number | Publication Date |
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| CN106348436A CN106348436A (en) | 2017-01-25 |
| CN106348436B true CN106348436B (en) | 2022-12-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610957859.0A Active CN106348436B (en) | 2016-10-28 | 2016-10-28 | Biological phosphorus removal device for sewage biochemical treatment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113845195A (en) * | 2021-11-01 | 2021-12-28 | 深圳市瑞清环保科技有限公司 | Dephosphorization equipment for town-based sewage treatment and use method |
Citations (8)
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| JP2002192185A (en) * | 2000-12-27 | 2002-07-10 | Kurita Water Ind Ltd | Biological dephosphorization apparatus |
| JP2002282890A (en) * | 2001-03-27 | 2002-10-02 | Sumitomo Heavy Ind Ltd | Treatment method and system for organic drainage |
| JP2004130249A (en) * | 2002-10-11 | 2004-04-30 | Mitsubishi Rayon Co Ltd | Biological dephosphorization accelerating method in anaerobic-aerobic circulation activated sludge treatment method |
| CN1935697A (en) * | 2006-10-13 | 2007-03-28 | 东南大学 | Integrated membrane biological fluidized bed sewage treating method and apparatus |
| CN101519265A (en) * | 2009-04-09 | 2009-09-02 | 北京汉青天朗水处理科技有限公司 | Sewage treatment process and system |
| CN102442750A (en) * | 2011-12-31 | 2012-05-09 | 北京汉青天朗水处理科技有限公司 | Sewage treatment systems and method |
| CN206126954U (en) * | 2016-10-28 | 2017-04-26 | 彭奇凡 | A biological dephosphorization ware for among sewage biochemical treatment |
| CN110293114A (en) * | 2019-06-24 | 2019-10-01 | 西安科技大学 | A kind of kitchen garbage and sanitary sewage coprocessing system and method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4211245B2 (en) * | 2001-06-25 | 2009-01-21 | 東京都 | Method and apparatus for separating phosphorus from activated sludge |
| US20030196803A1 (en) * | 2002-04-18 | 2003-10-23 | Kingsley Gordon Bruce | Well evacuator |
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2016
- 2016-10-28 CN CN201610957859.0A patent/CN106348436B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002192185A (en) * | 2000-12-27 | 2002-07-10 | Kurita Water Ind Ltd | Biological dephosphorization apparatus |
| JP2002282890A (en) * | 2001-03-27 | 2002-10-02 | Sumitomo Heavy Ind Ltd | Treatment method and system for organic drainage |
| JP2004130249A (en) * | 2002-10-11 | 2004-04-30 | Mitsubishi Rayon Co Ltd | Biological dephosphorization accelerating method in anaerobic-aerobic circulation activated sludge treatment method |
| CN1935697A (en) * | 2006-10-13 | 2007-03-28 | 东南大学 | Integrated membrane biological fluidized bed sewage treating method and apparatus |
| CN101519265A (en) * | 2009-04-09 | 2009-09-02 | 北京汉青天朗水处理科技有限公司 | Sewage treatment process and system |
| CN102442750A (en) * | 2011-12-31 | 2012-05-09 | 北京汉青天朗水处理科技有限公司 | Sewage treatment systems and method |
| CN206126954U (en) * | 2016-10-28 | 2017-04-26 | 彭奇凡 | A biological dephosphorization ware for among sewage biochemical treatment |
| CN110293114A (en) * | 2019-06-24 | 2019-10-01 | 西安科技大学 | A kind of kitchen garbage and sanitary sewage coprocessing system and method |
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| CN106348436A (en) | 2017-01-25 |
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