CN102765854A - Treating process for sewage settled in middle position - Google Patents
Treating process for sewage settled in middle position Download PDFInfo
- Publication number
- CN102765854A CN102765854A CN2012102407136A CN201210240713A CN102765854A CN 102765854 A CN102765854 A CN 102765854A CN 2012102407136 A CN2012102407136 A CN 2012102407136A CN 201210240713 A CN201210240713 A CN 201210240713A CN 102765854 A CN102765854 A CN 102765854A
- Authority
- CN
- China
- Prior art keywords
- aeration tank
- pond
- sewage
- sludge
- aeration
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
A treating process for sewage settled in a middle position comprises an aeration tank, a secondary sedimentation tank and a non-aeration tank, which are arranged in sequence from the top down and communicated with one another; sludge and sewage settled at the bottom of the secondary sedimentation tank at the middle part jointly enter the non-aeration tank at the bottom; mixed fluid in the non-aeration tank at the bottom and mixed fluid in the aeration tank arranged at the upper part jointly enter the secondary sedimentation tank in the middle for sludge-sewage separation; supernatant fluid in the secondary sedimentation tank in the middle is drained by a drain device arranged above the secondary sedimentation tank; and part of sludge settled in the secondary sedimentation tank in the middle flows back to the aeration tank, another part of the sludge flows back to the non-aeration tank at the bottom, and the rest part of the sludge serves as surplus sludge to be discharged. Through the use of the method, the engineering investment and the operation cost are saved greatly; the method has the advantages that the aeration amount is reduced, required silicon sources are fewer, the construction and operation costs are low, and the occupied area is small; and the method can better solve the problem that the occupied area in sewage treatment is larger, and also can solve the treatment problem that high-efficiency dephosphorization and denitrogenation of sewage are difficult to realize because the silicon sources are fewer and the ratio of carbon to nitrogen to phosphorus is imbalanced. The method is a biological phosphorus removal and denitrogenation process, and is suitable for treating low-carbon-source sewage, especially sewage occupying small areas.
Description
Technical field
The present invention relates to the meta precipitation sewage treatment process, the dephosphorization denitrogenation that is particularly useful for low carbon source sewage is handled, adaptable across the biochemical treatment of organic sewage or organic waste water.
Background technology
Along with the raising of Public Environmental Awareness is more and more stricter to the limitation standard of the discharging of WWT with both at home and abroad; Especially construction land is more and more nervous, and the research and development floor space is little, economical, sewage disposal technology is the focus in water pollution control engineering field always efficiently.
Summary of the invention
Technical problem: the objective of the invention is to overcome the weak point in the prior art, provide a kind of floor space little, energy consumption is little, the sewage treatment process that running cost is low.
Technical scheme: meta precipitation sewage treatment process of the present invention:
A. build the aeration tank that is interconnected, not aeration tank and second pond jointly; Second pond is located at the aeration tank and not between the aeration tank; On the top of second pond the water shoot that is furnished with a plurality of prosopores on the tube wall is set, the aerobic sludge return line that is communicated with the aeration tank is set in the bottom of second pond (5) and is communicated with not aeration tank anaerobic sludge return line;
B. through the anaerobic sludge return line mud of second pond bottom is drawn; Together get into not aeration tank with the sewage that gets in the aeration tank not; Through getting into behind the anaerobic reaction in the second pond, mix the back with the mud of second pond bottom again and draw the entering aeration tank through the aerobic sludge return line;
C. in the aeration tank, carry out getting into second pond behind the aeration, mixes common reaction with the muddy water that gets into second pond in the aeration tank never, carry out mud-water separation, the supernatant in the second pond is through the water shoot discharge on second pond top.
Said mud and the ratio of sewage quantity that together gets in the aeration tank not is 0.3:1-2:1; Precipitating sludge in the said entering aeration tank is 2:1-10:1 with the ratio of sewage; In described not aeration tank and aeration tank, can be added to biofilm development respectively the filler that adheres to medium is provided; The outlet pipe of described water shoot is connected with the rising pipe a little less than the aeration tank elevation of water surface.
Beneficial effect: the present invention from top to bottom is provided with in order and the aeration tank, the second pond that are connected, the aeration tank is not built jointly or divided to build and can save occupation of land in a large number.Precipitating sludge part in the second pond that the middle part is provided with is back to the aeration tank, and the not aeration tank bottom another part is back to and this partly precipitated mud and the two liquid flow rate of sewage get into the aeration tank on top jointly; Make that bottom, aeration tank mud does not carry out the reaction of anaerobism absorption organic carbon earlier when water inlet; And then carry out denitrification dephosphorization with being blended in from the nitric nitrogen of aeration tank, top or nitrite nitrogen in the second pond that the middle part is provided with; Make full use of limited carbon source; Improve the utilization ratio of carbon source in the wastewater treatment, solved the insufficient problem of carbon source in the wastewater biological dephosphorization effectively; Major advantage: 1. the present invention helps under anoxia condition, forming denitrification dephosphorization, and 2 self-contained process of denitrification denitrogenation and suction phosphorus are united two into one, and a carbon is dual-purpose; Muddy water mixed solution carries out in the mud-water separation process, accomplish denitrification and remove phosphorus reaction, has made full use of the space of the second pond that meta is provided with and has reduced nitrite nitrogen and the nitric nitrogen in mud and the water outlet;
The present invention have save that aeration rate, required carbon source are less, construction and advantage such as working cost is low, floor space is little; Improved the utilization ratio of carbon source in the wastewater treatment; Can solve preferably because of carbon source on the low side; Carbon, nitrogen, phosphorus ratio imbalance, and be difficult to realize the handling problem of the sewage of highly effective dephosphorizing denitrification.
Description of drawings
Fig. 1 is a process schematic representation of the present invention.
Among the figure: the 1-aeration tank, 2-is the aeration tank not, 3-aerobic sludge return line, 4-anaerobic sludge return line, 5-second pond, 6-water shoot.
Embodiment
Below in conjunction with accompanying drawing embodiments of the invention are done further to describe:
As shown in Figure 1; Meta precipitation sewage treatment process of the present invention: comprise and build the aeration tank 1 that is interconnected, not aeration tank 2 and second pond 5 jointly; Second pond 5 is located at aeration tank 1 and not between the aeration tank 2; On the top of second pond 5 water shoot 6 that is furnished with a plurality of prosopores on the tube wall is set, the aerobic sludge return line 3 that is communicated with aeration tank 1 is set in the bottom of second pond 5 and is communicated with not aeration tank 2 anaerobic sludge return lines 4; The outlet pipe of described water shoot 6 is connected with the rising pipe a little less than aeration tank 1 elevation of water surface; Through anaerobic sludge return line 4 mud of second pond 5 bottoms is drawn, together get into not aeration tank 2 with the sewage that get in the aeration tank not 2, the mud and the ratio of sewage quantity that together get in the aeration tank 2 not are 0.3:1-2:1.Do not get into aeration tank 2 through getting in the second pond 5 behind the anaerobic reactions, mixes the back again with the mud of second pond 5 bottoms and draw entering aeration tank 1 through aerobic sludge return line 3, the two liquid flow rate ratio of this partly precipitated mud and sewage is 2:1-10:1; In described not aeration tank 2 and aeration tank 1, add or be not added to biofilm development the filler that adheres to medium is provided.In aeration tank 1, carry out getting into behind the aeration second pond 5, mixes common reaction with the muddy water that gets into second pond 5 in the aeration tank 2 never, carry out mud-water separation, the supernatants in the second pond 5 are through water shoot 6 discharges on second pond top.Redundance is discharged as excess sludge.
Working process: the aeration tank that from top to bottom splits in order and be connected, second pond, aeration tank not; And precipitating sludge and sewage from bottom the second pond of middle part setting get into not aeration tank, bottom jointly; The mixed solution of the not aeration tank that is provided with from the bottom carries out mud-water separation with the second pond that the mixed solution of the aeration tank that is provided with from top gets into the middle part jointly; Supernatant in the second pond that the middle part is provided with is discharged by the water-freeing arrangement that the second pond top is provided with; Precipitating sludge part in the second pond that the middle part is provided with is back to the aeration tank, and another part is back to the not aeration tank of bottom, and redundance is discharged as excess sludge.Precipitating sludge and the two liquid flow rate of sewage from bottom the second pond of middle part setting get into not aeration tank, bottom jointly; Precipitating sludge part in the second pond that the middle part is provided with is back to the aeration tank, and the not aeration tank bottom another part is back to and this partly precipitated mud and the two liquid flow rate of sewage get into the aeration tank on top jointly.
Claims (5)
1. meta precipitation sewage treatment process is characterized in that:
A. build the aeration tank (1) that is interconnected, not aeration tank (2) and second pond (5) jointly; Second pond (5) is located at aeration tank (1) and not between aeration tank (2); On the top of second pond (5) water shoot (6) that is furnished with a plurality of prosopores on the tube wall is set, the aerobic sludge return line (3) that is communicated with aeration tank (1) is set in the bottom of second pond (5) and is communicated with not aeration tank (2) anaerobic sludge return line (4);
B. through anaerobic sludge return line (4) mud of second pond (5) bottom is drawn; Aeration tank (2) interior sewage together gets into not aeration tank (2) with getting into not; Get in the second pond (5) through behind the anaerobic reaction, mix the back with the mud of second pond (5) bottom again and draw entering aeration tank (1) through aerobic sludge return line (3);
C. get into second pond (5) after in aeration tank (1), carrying out aeration, mixes common reaction with the muddy water that gets into second ponds (5) in never aeration tank (2), carry out mud-water separation, the supernatant in the second pond (5) is through water shoot (6) discharge on second pond top.
2. a kind of meta precipitation sewage treatment process according to claim 1 is characterized in that: said mud and the ratio of sewage quantity that together gets in not aeration tank (2) is 0.3:1-2:1.
3. a kind of meta precipitation sewage treatment process according to claim 1 is characterized in that: the precipitating sludge in the said entering aeration tank (1) is 2:1-10:1 with the ratio of sewage.
4. a kind of meta precipitation sewage treatment process according to claim 1 is characterized in that: in described not aeration tank (2) and aeration tank (1), can be added to biofilm development respectively the filler that adheres to medium is provided.
5. a kind of meta precipitation sewage treatment process according to claim 1 is characterized in that: the outlet pipe of described water shoot (6) is connected with the rising pipe a little less than aeration tank (1) elevation of water surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210240713 CN102765854B (en) | 2012-07-12 | 2012-07-12 | Treating process for sewage settled in middle position |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210240713 CN102765854B (en) | 2012-07-12 | 2012-07-12 | Treating process for sewage settled in middle position |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102765854A true CN102765854A (en) | 2012-11-07 |
| CN102765854B CN102765854B (en) | 2013-10-30 |
Family
ID=47093472
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201210240713 Expired - Fee Related CN102765854B (en) | 2012-07-12 | 2012-07-12 | Treating process for sewage settled in middle position |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102765854B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1158825A (en) * | 1996-12-30 | 1997-09-10 | 东南大学 | Alternative integral biological treater and treatment method |
| JPH1157784A (en) * | 1997-08-22 | 1999-03-02 | Hitachi Ltd | Water flow machine |
| CN101041509A (en) * | 2007-04-24 | 2007-09-26 | 上海亚同环保实业有限公司 | Circulation flow ring-shaped biological denitrification phosphorous removal technique |
-
2012
- 2012-07-12 CN CN 201210240713 patent/CN102765854B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1158825A (en) * | 1996-12-30 | 1997-09-10 | 东南大学 | Alternative integral biological treater and treatment method |
| JPH1157784A (en) * | 1997-08-22 | 1999-03-02 | Hitachi Ltd | Water flow machine |
| CN101041509A (en) * | 2007-04-24 | 2007-09-26 | 上海亚同环保实业有限公司 | Circulation flow ring-shaped biological denitrification phosphorous removal technique |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102765854B (en) | 2013-10-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102531298B (en) | Sewage treatment device and method for enhanced denitrification A/A/O (Anodic Aluminum Oxide) and deoxygenation BAF (Biological Aerated Filter) | |
| CN105330108B (en) | Utilize anaerobism-catalytic oxidation biofilm reactor processing sanitary sewage method and processing unit | |
| CN201962168U (en) | System for strengthening denitrification and dephosphorization effects of A2/O process | |
| CN104591473B (en) | Advanced nitrogen and phosphorus removal technology | |
| CN104030443A (en) | Fine management-based municipal sewage enhanced phosphorus and nitrogen removal system and treatment process thereof | |
| CN103979750B (en) | Reactor for sewage treatment and phosphorus recovery and method for recovering phosphorus by using same | |
| CN105293834A (en) | Integrated iods reactor | |
| CN103979681A (en) | Nitrification/denitrification integrated rural domestic sewage treatment system | |
| CN202430091U (en) | De-nitrification and phosphorous removal sewage treatment process combining withacetoacetyl-o-anisidine (AAOA) with membrane biological reactor (MBR) | |
| CN102259981B (en) | Sequencing batch biological phosphorus and nitrogen removal process | |
| CN103508635A (en) | Efficient nitrogen and phosphorus removal wastewater treatment system and process | |
| CN102936085B (en) | Stacked biological denitrification sewage treatment technology and device | |
| CN102936082B (en) | Short-range aeration sewage purifier | |
| CN203238141U (en) | Sewage biological treatment membrane filtration system | |
| CN202482175U (en) | Denitrification dephosphorization sewage treatment device | |
| CN102010062A (en) | MBR wastewater treating system with double circular grooves | |
| CN201914974U (en) | Dual-circular groove membrane bioreactor (MBR) waste water treatment system | |
| CN102276062A (en) | Multistage anaerobic and anoxic circulating final segment aerobic activated sludge process | |
| CN209193638U (en) | A kind of Small Towns advanced sewage treatment system of photovoltaic solar driving | |
| CN209368051U (en) | A kind of reinforced phosphor-removing A2O-MBBR sewage-treatment plant | |
| CN100586879C (en) | Biological filter dephosphorizing technique employing alternative aeration | |
| CN107720947B (en) | Mobile sewage treatment vehicle | |
| CN109775936A (en) | A kind of low energy consumption domestic sewage processing system | |
| CN101250007A (en) | Denitrification nitrogen and phosphorus removal urban sewage treatment method and device | |
| CN102145969B (en) | Multi-stage anaerobic and aerobic cocurrent flow tail section oxygen-deficient activated sludge process |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131030 Termination date: 20210712 |