CN201746425U - Treatment system for nitrogen and phosphorus in urban sewage - Google Patents
Treatment system for nitrogen and phosphorus in urban sewage Download PDFInfo
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- CN201746425U CN201746425U CN2010202168644U CN201020216864U CN201746425U CN 201746425 U CN201746425 U CN 201746425U CN 2010202168644 U CN2010202168644 U CN 2010202168644U CN 201020216864 U CN201020216864 U CN 201020216864U CN 201746425 U CN201746425 U CN 201746425U
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Abstract
The utility model discloses a treatment system for nitrogen and phosphorus in urban sewage, which comprises a denitrifying subsystem and a chemical dephosphorizing subsystem, wherein the denitrifying subsystem is formed through sequential connection of a primary sedimentation tank, an anoxic tank, an aerobic tank and a secondary sedimentation tank; a water inlet of the primary sedimentation tank is particularly a sewage inlet, and a water outlet of the secondary sedimentation tank is particularly a good water outlet; a biological carrier embedding nitrifying bacteria and an aeration head connected with an air compressing device are arranged in the aerobic tank; the chemical dephosphorizing subsystem is formed through sequential connection of an anoxic phosphorus diluting tank, a mixed reaction tank and a chemical sedimentation tank; a mud discharging opening of the secondary sedimentation tank of the denitrifying subsystem is connected with a mud inlet of the anoxic phosphorus diluting tank of the chemical dephosphorizing subsystem through a pipeline, and the water outlet of the chemical sedimentation tank of the chemical dephosphorizing subsystem is connected back to the water inlet of the anoxic tank of the denitrifying subsystem. The treatment system not only effectively solves the contraction between biological denitrification and dephosphorization and solves the problem that secondary pollution can be easily caused in traditional denitrification and dephosphorization, but also shortens the staying time of water in the aerobic tank and saves engineering investment.
Description
Technical field
The utility model relates to technical field of sewage, particularly relates to a kind of treatment system to nitrogen phosphorus in the municipal effluent.
Background technology
At present, along with improving constantly of standard of drainage, the emission request to nitrogen phosphorus in the works liquor also improves day by day.In the process integration of denitrogenation and dephosphorization,, in same treatment scheme, be difficult to reach and coordinate and operation stably because two related microorganisms of process have bigger difference on character and best metabolism condition.And the method for excess sludge by discharging in traditional denitrification dephosphorization technique is transferred to the phosphorus in the sewage in the mud, if the excess sludge of discharging is dealt with improperly, the phosphorus in the mud can be released into environment again, and environment is caused secondary pollution.
The utility model content
In order to overcome denitrogenation and the very difficult shortcoming of coordinating of dephosphorization in the existing sewage treatment process, the utility model embodiment provides the treatment system of nitrogen phosphorus in a kind of municipal effluent, can efficiently remove nitrogen in the sewage and can efficiently remove phosphorus in the sewage again, and can not make the phosphorus in the mud that environment is caused secondary pollution.
The technical scheme that the utility model technical solution problem adopts is as follows:
The utility model embodiment provides the treatment system of nitrogen phosphorus in a kind of municipal effluent, comprising:
Denitrogenation subsystem and chemical phosphorus removing subsystem;
Wherein, described denitrogenation subsystem is formed by connecting in turn by preliminary sedimentation tank, anoxic pond, Aerobic Pond and second pond, and the water-in of described preliminary sedimentation tank is as sewage inlet, and the water outlet of second pond is as good water water outlet; Be provided with the bio-carrier and the aeration head that is connected with air compression plant of embedding nitrifier in the described Aerobic Pond;
Described chemical phosphorus removing subsystem is formed by connecting in turn by anaerobic phosphorus releasing pool, mixed reaction pond and chemical precipitation pond;
The mud discharging mouth of the second pond of described denitrogenation subsystem is connected by the mud inlet of pipeline with the anaerobic phosphorus releasing pool of described chemical phosphorus removing subsystem; The water outlet in the chemical precipitation pond of described chemical phosphorus removing subsystem returns the water-in of the anoxic pond that is connected to described denitrogenation subsystem by pipeline.
The water outlet of the Aerobic Pond of described denitrogenation subsystem returns the water-in that is connected to anoxic pond by the mixed-liquor return pipeline;
The water outlet place of described Aerobic Pond is provided with grid.
Be provided with whipping device in the anoxic pond of described denitrogenation subsystem.
The excess sludge relief outlet of the anaerobic phosphorus releasing pool of described chemical phosphorus removing subsystem returns the water-in of the anoxic pond of linking described denitrogenation subsystem by pipeline.
Be provided with whipping device in the mixed reaction pond of described chemical phosphorus removing subsystem.
The volume of the bio-carrier of described embedding nitrifier account for Aerobic Pond useful volume 5～8%.
The technical scheme that provides by above-mentioned the utility model embodiment as can be seen, among the utility model embodiment by bio-carrier that the embedding nitrifier is set in the Aerobic Pond that is provided with in the denitrogenation subsystem and the aeration head that is connected with air compression plant, effectively improved the interior denitrification effect of Aerobic Pond to sewage, reduce the residence time of sewage in Aerobic Pond, reached the effect of efficient denitrification.Denitrogenation subsystem by this structure cooperates with chemical phosphorus removing subsystem, nitrogen in the sewage can be efficiently removed and phosphorus in the sewage can be efficiently removed again, well solve denitrogenation and the very difficult coordination of dephosphorization in traditional denitrification dephosphorization technique, easily environment has been caused secondary pollution problem.
Description of drawings
The synoptic diagram of the treatment system of nitrogen phosphorus in the municipal effluent that Fig. 1 provides for the utility model embodiment.
Embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
The utility model embodiment provides the treatment system of nitrogen phosphorus in a kind of Treating Municipal Sewage, can overcome denitrogenation and the very difficult shortcoming of coordinating of dephosphorization in the prior art, cooperate with chemical phosphorus removing subsystem by the denitrogenation subsystem, the bio-carrier of embedding nitrifier particularly is set in the Aerobic Pond of denitrogenation subsystem, not only improved denitrification effect, and shortened the hydraulic detention time of Aerobic Pond greatly, can reach the effect that the nitrogen that can efficiently remove in the sewage can efficiently be removed the phosphorus in the sewage again.
Embodiment
As shown in Figure 1, present embodiment provides the treatment system of nitrogen phosphorus in a kind of municipal effluent, and this system comprises:
Denitrogenation subsystem and chemical phosphorus removing subsystem;
Wherein, the denitrogenation subsystem is formed by connecting in turn by preliminary sedimentation tank 11, anoxic pond 12, Aerobic Pond 13 and second pond 14, and the water inlet A of the preliminary sedimentation tank 11 of denitrogenation subsystem is as sewage inlet, and the water outlet B of second pond 14 is as good water water outlet; Chemical phosphorus removing subsystem is formed by connecting in turn by anaerobic phosphorus releasing pool 21, mixed reaction pond 22 and chemical precipitation pond 23; The mud discharging mouth 141 of the second pond 14 of denitrogenation subsystem is connected by the mud inlet of pipeline with the anaerobic phosphorus releasing pool 21 of chemical phosphorus removing subsystem; The water outlet in the chemical precipitation pond 23 of chemical phosphorus removing subsystem returns the water-in 121 of the anoxic pond 12 that is connected to the denitrogenation subsystem by pipeline.
In the denitrogenation subsystem of above-mentioned treatment system, the water outlet of preliminary sedimentation tank 11 is connected with the water-in 121 of anoxic pond 12, and heavy 11 bottoms, pond of ren also are provided with mud discharging mouth C, and this mud discharging mouth C can be connected to outside sludge treating system by pipeline.This preliminary sedimentation tank 11 can make sewage carry out primary deposition, removes most suspended substances and organic matters in the sewage.
Be provided with whipping device 121 in the anoxic pond 12, can make to enter and under whipped state, carry out denitrification denitrogenation in the anoxic pond 12, remove the most of organism in the sewage simultaneously through preliminary sedimentation tank 11 oettIed sewages.
Be provided with bio-carrier of embedding nitrifier and the aeration head 131 that is connected with air compression plant in the Aerobic Pond 13, for the bio-carrier that prevents the embedding nitrifier runs off, can fine fack be set at Aerobic Pond water outlet place, the amount of the bio-carrier of embedding nitrifier accounts for 5～8% of Aerobic Pond useful volume for the volume of the bio-carrier of this embedding nitrifier; This Aerobic Pond can make the sewage continuous aeration under the effect of aeration head 131 that enters in the Aerobic Pond 13, kept oxygen condition, make microorganism in the sewage carry out the excessive absorption phosphorus process of nitration reaction and polyP bacteria, simultaneously the further organism in the degradation of sewage also; The bio-carrier of embedding nitrifier by being provided with (can be to add) in the Aerobic Pond in the mode that adds, can improve the nitrifier quantity in the Aerobic Pond greatly, increase the nitrated ability of Aerobic Pond, the nitration reaction of ammonia nitrogen in the enhanced sewage, effectively shorten the residence time of sewage in Aerobic Pond 13, as long as general dwell time of sewage is 3～4 hours, compare in the conventional processes, waterpower significantly shortened in 6～8 hours residence time of Aerobic Pond, so not only guaranteed the effect of efficient denitrification, also can reduce the volume of Aerobic Pond, reduce the laid down cost of entire treatment system.
In the denitrogenation subsystem of above-mentioned treatment system, the water outlet of Aerobic Pond 13 also is connected to the water-in 121 of anoxic pond 12 for 15 times by the mixed-liquor return pipeline, the mud mixture that the water outlet of Aerobic Pond 13 is discharged is partly refluxed to and carries out recycle in the anoxic pond 12, improves the nitration reaction effect.
In the chemical phosphorus removing subsystem of above-mentioned treatment system, the water outlet of anaerobic phosphorus releasing pool 21 is connected with mixed reaction pond 22 by pipeline, the excess sludge relief outlet D of anaerobic phosphorus releasing pool 21 discharges remaining mud (can enter outside sludge treating system handles), the excess sludge relief outlet D of this anaerobic phosphorus releasing pool 21 also returns the water-in 121 of the anoxic pond 12 of linking the denitrogenation subsystem by pipeline, so that the part residual sludge reflux carries out recycle to anoxic pond 12, improve assimilation effect to phosphor in sewage.
Also be provided with whipping device 221 in the mixed reaction pond 22, after to the phosphorous supernatant liquor of discharging, adding dephosphorization agent, by reaching better phosphor-removing effect after whipping device 22 stirrings from anaerobic phosphorus releasing pool 21.
The mud discharging mouth E of 23 bottoms, chemical precipitation pond can be used for discharging phosphorus containing sludge, and this phosphorus containing sludge can be used as fertilizer.
In the treatment system of the utility model embodiment by bio-carrier that the embedding nitrifier is set in the Aerobic Pond that is provided with in the denitrogenation subsystem and the aeration head that is connected with air compression plant, effectively improved the interior denitrification effect of Aerobic Pond to sewage, reduce the residence time of sewage in Aerobic Pond, reached the effect of efficient denitrification.Denitrogenation subsystem by this structure cooperates with chemical phosphorus removing subsystem, nitrogen in the sewage can be efficiently removed and phosphorus in the sewage can be efficiently removed again, well solve denitrogenation and the very difficult coordination of dephosphorization in traditional denitrification dephosphorization technique, easily environment has been caused secondary pollution problem.
Simultaneously,, also can reduce the volume of Aerobic Pond, reduce the laid down cost of entire treatment system owing to shorten the Aerobic Pond hydraulic detention time.
Utilize the above-mentioned treatment system that provides that municipal effluent is handled and remove nitrogen, phosphorus, specifically comprise the steps:
The treatment system that sewage enters nitrogen phosphorus the municipal effluent from preliminary sedimentation tank;
The first step: preliminary sedimentation tank; Sewage carries out primary deposition in preliminary sedimentation tank, remove most suspended substances and organic matters;
Second step: anoxic pond: enter anoxic pond through the preliminary sedimentation tank oettIed sewage, in anoxic pond, carry out denitrification denitrogenation, remove most of organism simultaneously;
The 3rd step: Aerobic Pond; Continuous aeration in the Aerobic Pond, kept oxygen condition, microorganism carries out the excessive absorption phosphorus process of nitration reaction and polyP bacteria, the further organism in the degradation of sewage also simultaneously, in Aerobic Pond, add the bio-carrier of a certain amount of embedding nitrifier, the amount of the bio-carrier of the embedding nitrifier that adds for the volume of the bio-carrier of this embedding nitrifier be Aerobic Pond useful volume 5～8%, can improve the nitrifier quantity in the Aerobic Pond greatly, increase the nitrated ability of Aerobic Pond, the nitration reaction of ammonia nitrogen in the enhanced sewage;
The 4th step: second pond; Mud mixture in the Aerobic Pond carries out mud-water separation in second pond, the supernatant liquor qualified discharge, and bottom mud enters anaerobic phosphorus releasing pool and releases phosphorus;
The 5th step: anaerobic phosphorus releasing pool; Carry out the release of phosphorus at anaerobic phosphorus releasing pool mud, phosphorous supernatant liquor enters mixed reaction pond, and the bottom excess sludge is partly refluxed to anoxic pond, and excess sludge drains into sludge treating system;
The 6th step: mixed reaction pond; Phosphorous supernatant liquor reacts with the dephosphorization agent thorough mixing that is added in the mixed reaction pond in the mixed precipitation pond;
The 7th step: the chemical precipitation pond: carry out mud-water separation in the chemical precipitation pond, the settling tank supernatant liquor enters anoxic pond, and the chemical sludge of bottom is as fertilizer.
Also comprise in the above-mentioned processing: the mud mixture that Aerobic Pond is discharged is partly refluxed to and carries out recycle in the hypoxia response pond, improves the denitrification effect of denitrogenation subsystem to sewage;
Also comprise in the above-mentioned processing: the excess sludge that the anaerobic phosphorus releasing pool of chemical phosphorus removing subsystem is discharged is partly refluxed to recycle in the anoxic pond and absorbs phosphorus in the sewage.
In sum, in the treatment system of the utility model embodiment to nitrogen phosphorus in the municipal effluent, embedding nitrifier bio-carrier is set in Aerobic Pond, utilize embedding nitrifier bio-carrier enhanced nitrogen removal process to combine with dypass chemical dephosphorization technology, effectively solved the problem of biological denitrificaion and dephosphorization contradiction, and solved that excess sludge easily causes secondary pollution problem in traditional denitrification dephosphorization technique, this system can shorten the hydraulic detention time of Aerobic Pond simultaneously, reduce the volume of Aerobic Pond, save the construction investment of treatment system.
The above; it only is the preferable embodiment of the utility model; but protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the variation that can expect easily or replacement all should be encompassed within the protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain of claims.
Claims (7)
1. the treatment system of nitrogen phosphorus in the municipal effluent is characterized in that, comprising:
Denitrogenation subsystem and chemical phosphorus removing subsystem;
Wherein, described denitrogenation subsystem is formed by connecting in turn by preliminary sedimentation tank, anoxic pond, Aerobic Pond and second pond, and the water-in of described preliminary sedimentation tank is as sewage inlet, and the water outlet of second pond is as good water water outlet; Be provided with the bio-carrier and the aeration head that is connected with air compression plant of embedding nitrifier in the described Aerobic Pond;
Described chemical phosphorus removing subsystem is formed by connecting in turn by anaerobic phosphorus releasing pool, mixed reaction pond and chemical precipitation pond;
The mud discharging mouth of the second pond of described denitrogenation subsystem is connected by the mud inlet of pipeline with the anaerobic phosphorus releasing pool of described chemical phosphorus removing subsystem; The water outlet in the chemical precipitation pond of described chemical phosphorus removing subsystem returns the water-in of the anoxic pond that is connected to described denitrogenation subsystem by pipeline.
2. the treatment system of nitrogen phosphorus is characterized in that in the municipal effluent as claimed in claim 1, and the water outlet of the Aerobic Pond of described denitrogenation subsystem returns the water-in that is connected to anoxic pond by the mixed-liquor return pipeline;
3. the treatment system of nitrogen phosphorus is characterized in that in the municipal effluent as claimed in claim 1, and the water outlet place of described Aerobic Pond is provided with grid.
4. the treatment system of nitrogen phosphorus is characterized in that in the municipal effluent as claimed in claim 1, is provided with whipping device in the anoxic pond of described denitrogenation subsystem.
5. the treatment system of nitrogen phosphorus is characterized in that in the municipal effluent as claimed in claim 1, and the excess sludge relief outlet of the anaerobic phosphorus releasing pool of described chemical phosphorus removing subsystem returns the water-in of the anoxic pond of linking described denitrogenation subsystem by pipeline.
6. the treatment system of nitrogen phosphorus is characterized in that in the municipal effluent as claimed in claim 1, is provided with whipping device in the mixed reaction pond of described chemical phosphorus removing subsystem.
7. the treatment system of nitrogen phosphorus is characterized in that in the municipal effluent as claimed in claim 1, the volume of the bio-carrier of described embedding nitrifier account for Aerobic Pond useful volume 5～8%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202168644U CN201746425U (en) | 2010-05-26 | 2010-05-26 | Treatment system for nitrogen and phosphorus in urban sewage |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010202168644U CN201746425U (en) | 2010-05-26 | 2010-05-26 | Treatment system for nitrogen and phosphorus in urban sewage |
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| CN201746425U true CN201746425U (en) | 2011-02-16 |
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| CN2010202168644U Expired - Fee Related CN201746425U (en) | 2010-05-26 | 2010-05-26 | Treatment system for nitrogen and phosphorus in urban sewage |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103319045A (en) * | 2013-06-09 | 2013-09-25 | 宁波市恒洁水处理工程有限公司 | Cephalo-type waste water processing apparatus and method thereof |
| CN110776200A (en) * | 2019-11-05 | 2020-02-11 | 云南龙帜环境工程有限公司 | A high-efficient biological denitrogenation system for sewage treatment |
| CN113003860A (en) * | 2021-02-23 | 2021-06-22 | 刘苗 | Urban sewage treatment equipment |
-
2010
- 2010-05-26 CN CN2010202168644U patent/CN201746425U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103319045A (en) * | 2013-06-09 | 2013-09-25 | 宁波市恒洁水处理工程有限公司 | Cephalo-type waste water processing apparatus and method thereof |
| CN110776200A (en) * | 2019-11-05 | 2020-02-11 | 云南龙帜环境工程有限公司 | A high-efficient biological denitrogenation system for sewage treatment |
| CN113003860A (en) * | 2021-02-23 | 2021-06-22 | 刘苗 | Urban sewage treatment equipment |
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| C14 | Grant of patent or utility model | ||
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| 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: 20110216 Termination date: 20190526 |