CN203833769U - Town sewage treatment system - Google Patents
Town sewage treatment system Download PDFInfo
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- CN203833769U CN203833769U CN201420253868.8U CN201420253868U CN203833769U CN 203833769 U CN203833769 U CN 203833769U CN 201420253868 U CN201420253868 U CN 201420253868U CN 203833769 U CN203833769 U CN 203833769U
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- pond
- sewage treatment
- treatment system
- town sewage
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Abstract
The utility model provides a town sewage treatment system. The town sewage treatment system comprises a raw water tank, an anaerobic tank, a hypoxic tank, an aerobic tank and a secondary sedimentation tank. An intermediate sedimentation tank is arranged between the hypoxic tank and the aerobic tank, the bottom of the intermediate sedimentation tank is provided with a first dredge pipe, a sludge port of the anaerobic tank is connected with the first dredge pipe through a sludge backflow pump, the bottom of the secondary sedimentation tank is provided with a second dredge pipe, and a sludge port of the aerobic tank is connected with the second dredge pipe through a sludge backflow pump. The town sewage treatment system solves the problem of sludge age contradiction between nitrifying bacteria and phosphorus-accumulating bacteria, relieves the adverse effect of carbon source insufficiency in raw water and low temperature on synchronous denitrification and phosphorus removal and improves the denitrification and phosphorus removal effect. The town sewage treatment system can effectively treat low carbon source town sewage and have efficient deep denitrification and phosphorus removal effect and is of great significance for relieving water body eutrophication increasingly severe at present.
Description
Technical field
The utility model relates to a kind of Sewage treatment systems, especially a kind of town sewage treatment system.
Background technology
The body eutrophication problem that the excessive emissions of nitrogen, phosphorus causes is outstanding day by day, take to control eutrophication and remove to become the target of mainly struggling in various countries as object nitrogen, phosphorus in sewage disposal.The treatment stage that town sewage treatment technology being object from single removal organism, entered and should remove organism advanced treatment stage of denitrogenation dephosphorizing again.
A
2/ O technique, owing to can realizing synchronous denitrification dephosphorizing, is widely used in municipal sewage treatment, passes through in the world A
2the sewage that/O technique completes denitrogenation dephosphorizing accounts for more than 80%, in China, adopts A
2the water factory that/O technique is carried out biological carbon and phosphorous removal approximately has more than 50%.But A
2there are some contradictions that are difficult to overcome in/O technique itself, as the contradiction of substrate competition and sludge age, processing efficiency is difficult to improve.Yet most of town sewage C/N is lower in China, and the shortage of carbon source has further intensified A
2the inner contradictions of/O technique.In the winter of northern China, due to the reduction of envrionment temperature, also make the contradiction of nitrobacteria and dephosphorization bacterial sludge retention time more outstanding.In sum, many reasons cause A jointly
2/ O technique is difficult to reach the denitrogenation dephosphorizing target of expection in Practical Project.Therefore to A
2/ O technologic improvement, the intrinsic contradictions of even eliminating itself to alleviating become the study hotspot of municipal effluent denitrogenation dephosphorizing.
Utility model content
The utility model provides a kind of town sewage treatment system, has solved traditional A
2the mud contradiction in age that the nitrobacteria that/O exists and polyP bacteria exist, has alleviated carbon source in low temperature and former water simultaneously and has lacked the disadvantageous effect that denitrogenation dephosphorizing is caused, and has improved the effect of technique synchronous denitrification dephosphorizing under low temperature.
Realize the town sewage treatment system of the utility model object, comprise connected successively raw water box, anaerobic pond, anoxic pond, Aerobic Pond and second pond; Between described anoxic pond and Aerobic Pond, be provided with intermediate sedimentation pond, bottom, described intermediate sedimentation pond is provided with the first shore pipe, and the mud mouth of described anaerobic pond is connected with the first shore pipe by sludge reflux pump; Described second pond bottom is provided with the second shore pipe, and the mud mouth of described Aerobic Pond is connected with the second shore pipe by sludge reflux pump.
The supernatant liquor outlet of described second pond is connected with rising pipe, and supernatant liquor outlet is also connected with the bottom of anoxic pond by supernatant liquor reflux pump.
Between described raw water box and anaerobic pond, be provided with intake pump.
In described anaerobic pond and anoxic pond, be respectively equipped with stirrer.
Described anoxic pond bottom connects aeration pump.
The bottom of described Aerobic Pond connects air compressor machine by aeration tube.
The beneficial effect of town sewage treatment system of the present utility model is as follows:
Town sewage treatment system of the present utility model, has solved the mud contradiction in age between nitrobacteria and polyP bacteria, has alleviated carbon source deficiency and the disadvantageous effect of low temperature to synchronous denitrification dephosphorizing in former water, has increased the Nitrogen/Phosphorus Removal of system.The present invention can effectively process low C/N town sewage at low temperatures, reaches efficient advanced nitrogen phosphor-removing effect, significant to improving current day by day serious body eutrophication.The research technology not only can be used for the design and operation of newly-built sewage work, and also has important reference value for the upgrading of existing sewage work.
Accompanying drawing explanation
Fig. 1 is the structural representation of town sewage treatment system of the present utility model.
Embodiment
As shown in Figure 1, town sewage treatment system of the present utility model, comprises connected successively raw water box 1, anaerobic pond 2, anoxic pond 3, Aerobic Pond 5 and second pond 6; Between described anoxic pond 3 and Aerobic Pond 5, be provided with intermediate sedimentation pond 4,4 bottoms, described intermediate sedimentation pond are provided with the first shore pipe 16, and the mud mouth of described anaerobic pond 2 is connected with the first shore pipe 16 by sludge reflux pump 10; Described second pond 6 bottoms are provided with the second shore pipe 14, and the mud mouth of described Aerobic Pond 5 is connected with the second shore pipe 14 by sludge reflux pump 10.
The supernatant liquor outlet of described second pond 6 is connected with rising pipe 15, and supernatant liquor outlet is also connected with the bottom of anoxic pond 3 by supernatant liquor reflux pump 11.
Between described raw water box 1 and anaerobic pond 2, be provided with intake pump 9.In described anaerobic pond 2 and anoxic pond 3, be respectively equipped with stirrer 8.Described anoxic pond 3 bottoms connect aeration pump 12.The bottom of described Aerobic Pond 5 connects air compressor machine 7 by aeration tube 13.
Town sewage treatment system of the present utility model at traditional A
2in/O technique, after anoxic pond, increase an intermediate sedimentation pond, make system change two mud systems into, mud is divided into anoxic section mud and aerobic section mud.Nitrobacteria and polyP bacteria in two systems, have thoroughly solved traditional A respectively
2the contradiction in the nitrobacteria that/O exists and polyP bacteria mud age.
The supernatant liquor gravity flow in intermediate sedimentation pond enters Aerobic Pond, and mud is back to anaerobic pond, makes anoxic section mud only in anaerobic pond and anoxic pond circulation, and for the enrichment of denitrifying phosphorus removing bacteria (DPB) provides condition, DPB is with NO
3 --N is as electron acceptor(EA), and the under anaerobic PHB of the thin intracellular accumulation of DPB of take is electron donor, for the biochemical action of the excessive suction phosphorus of anoxic pond provides energy, dephosphorization and denitrification is united two into one, and therefore can save the part carbon source in former water.
Increased anoxic pond volume, the hydraulic detention time of anoxic pond extended, and in anoxic pond limited aeration.Anoxic by intensified anti-nitrated phosphorous-removal bacterium and traditional dephosphorization bacterial is inhaled phosphorus efficiency, and the dephosphorization of this technique is completed in anoxic section.Because the mud neck that anoxic section microorganism requires is shorter, can discharge rich phosphorous sludge by increase, improved the phosphor-removing effect of technique.Aerobic section mud only circulates between Aerobic Pond and settling tank, aerobic section mud is not participated in the dephosphorization process of system directly, therefore can by reducing sludge volume, extend aerobic section sludge retention time according to the needs of nitrobacteria, nitrobacteria is not eliminated at low temperatures, thus the nitrification effect of stable system.
In Aerobic Pond, add partial suspended filler, make this technique have the advantage of suspension active sludge and fixed biofilm concurrently.Floating stuffing is conducive to adhering to of bacterium and microorganism, increased adsorption area, improve transmission and the utilising efficiency of oxygen, can also improve system sewage load, extend sludge age, shorten the stability of hydraulic detention time, enhanced system, and can effectively improve the removal effect to COD, BOD, TN and TP.Main apposition growth nitrobacteria on floating stuffing, and main growth heterotrophic bacterium in suspended sludge, by the fixed action of filler, has solved the problem that nitrobacteria is easily eliminated, and has stably improved the nitrification effect of system.Microbial film easily forms different dissolved oxygen environment simultaneously, therefore, the biochemical reaction of the denitrogenations such as Simultaneous Nitrification denitrification, short-cut nitrification and denitrification more easily occurs in this system, has improved the denitrification effect of system operation.
Embodiment recited above is described preferred implementation of the present utility model; not scope of the present utility model is limited; design under spiritual prerequisite not departing from the utility model; various distortion and improvement that the common engineering technical personnel in this area make technical solutions of the utility model, all should fall in the definite protection domain of claims of the present utility model.
Claims (6)
1. town sewage treatment system, comprises connected successively raw water box, anaerobic pond, anoxic pond, Aerobic Pond and second pond; It is characterized in that: between described anoxic pond and Aerobic Pond, be provided with intermediate sedimentation pond, bottom, described intermediate sedimentation pond is provided with the first shore pipe, and the mud mouth of described anaerobic pond is connected with the first shore pipe by sludge reflux pump; Described second pond bottom is provided with the second shore pipe, and the mud mouth of described Aerobic Pond is connected with the second shore pipe by sludge reflux pump.
2. town sewage treatment system according to claim 1, is characterized in that: the supernatant liquor outlet of described second pond is connected with rising pipe, and supernatant liquor outlet is also connected with the bottom of anoxic pond by supernatant liquor reflux pump.
3. town sewage treatment system according to claim 1 and 2, is characterized in that: between described raw water box and anaerobic pond, be provided with intake pump.
4. town sewage treatment system according to claim 1 and 2, is characterized in that: in described anaerobic pond and anoxic pond, be respectively equipped with stirrer.
5. town sewage treatment system according to claim 1 and 2, is characterized in that: described anoxic pond bottom connects aeration pump.
6. town sewage treatment system according to claim 1 and 2, is characterized in that: the bottom of described Aerobic Pond connects air compressor machine by aeration tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420253868.8U CN203833769U (en) | 2014-05-19 | 2014-05-19 | Town sewage treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420253868.8U CN203833769U (en) | 2014-05-19 | 2014-05-19 | Town sewage treatment system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203833769U true CN203833769U (en) | 2014-09-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420253868.8U Expired - Fee Related CN203833769U (en) | 2014-05-19 | 2014-05-19 | Town sewage treatment system |
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| CN (1) | CN203833769U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104445619A (en) * | 2014-12-18 | 2015-03-25 | 上海交通大学 | Process and device for deeply removing nitrogen and phosphorus in waste water |
| CN105753251A (en) * | 2016-03-18 | 2016-07-13 | 南京瑞利克斯环境科技有限公司 | Sewage treatment system and sewage treatment method |
| CN112851024A (en) * | 2021-01-06 | 2021-05-28 | 安庆市绿巨人环境技术股份有限公司 | Sewage advanced nitrogen and phosphorus removal device |
-
2014
- 2014-05-19 CN CN201420253868.8U patent/CN203833769U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104445619A (en) * | 2014-12-18 | 2015-03-25 | 上海交通大学 | Process and device for deeply removing nitrogen and phosphorus in waste water |
| CN104445619B (en) * | 2014-12-18 | 2016-02-17 | 上海交通大学 | Waste water advanced denitrification dephosphorization technique and device |
| CN105753251A (en) * | 2016-03-18 | 2016-07-13 | 南京瑞利克斯环境科技有限公司 | Sewage treatment system and sewage treatment method |
| CN105753251B (en) * | 2016-03-18 | 2018-09-18 | 南京瑞利克斯环境科技有限公司 | Sewage disposal system and sewage water treatment method |
| CN112851024A (en) * | 2021-01-06 | 2021-05-28 | 安庆市绿巨人环境技术股份有限公司 | Sewage advanced nitrogen and phosphorus removal device |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140917 Termination date: 20150519 |
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| EXPY | Termination of patent right or utility model |