CN204417293U - A kind of denitrification dephosphorization apparatus - Google Patents
A kind of denitrification dephosphorization apparatus Download PDFInfo
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- CN204417293U CN204417293U CN201520050326.5U CN201520050326U CN204417293U CN 204417293 U CN204417293 U CN 204417293U CN 201520050326 U CN201520050326 U CN 201520050326U CN 204417293 U CN204417293 U CN 204417293U
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Abstract
The utility model discloses a kind of denitrification dephosphorization apparatus, it is characterized in that: according to the treating processes of sewage, be communicated with successively from front to back and be provided with biological adsorption pond, settling tank, nitrated/denitrification sequencing batch pond, in described settling tank, nitrated/denitrification sequencing batch pond one end, according to the treatment scheme of mud, be communicated with successively from front to back and be provided with hydrolysed ferment reactor, sludge dewatering equipment, MAP reactor, described MAP reactor last connection with nitrated/denitrification sequencing batch pond forms loop.The utility model retains the organism in absorption water inlet in a large number by biological adsorption pond, these organism produce volatile acid as carbon source in hydrolysed ferment reactor, remaining organism in nitrated/denitrification sequencing batch pond aerobic oxidation sewage, be nitrate nitrogen by mineralized nitrogen, and the carbon source utilizing hydrolysed ferment reactor to produce is by nitrate nitrogen denitrification denitrogenation, the nitrogen phosphorus after MAP reactor recycle-water hydrolysis and fermentation reactor in sewage.
Description
Technical field
The utility model relates to a kind of effluent treatment plant, especially a kind of denitrification dephosphorization apparatus.
Background technology
The municipal wastewater biochemical processing process with denitrogenation dephosphorizing function of present main flow has AAO technique, MSBR technique and BAF etc., and above technique is widely used in the municipal sewage plant of China.
AAO technique is traditional activated sludge method processing technique, there is convenient management, the advantage that treatment effect is stable, but it is low to there is volumetric loading, settling tank floor space is large, be difficult to the shortcomings such as properly distributed carbon source causes Nitrogen/Phosphorus Removal bad, when water-inlet carbon source deficiency, necessary additional carbon guarantee total nitrogen is up to standard.
MSBR process structure is compact, good denitrification dephosphorization effect, need not arrange independent settling tank, continuous flow, the advantages such as floor space is little, but necessary additional carbon guarantee total nitrogen is up to standard when water-inlet carbon source deficiency.
BAF is compared with conventional activated sludge process, there is the advantages such as organic loading is high, floor space is little, can not produce sludge bulking, oxygen transmission efficiency is high, effluent quality is good, but there is following shortcoming: 1, require tighter to water inlet SS, therefore need to carry out pre-treatment to water inlet, running cost increases; 2, biological phosphor-removing effect is poor, and need to add medicament and carry out chemical dephosphorization, running cost is high; 3, the back flushing water yield, head loss are all larger; 4, investment is higher; 5, must additional carbon during denitrification biological aerated filter denitrogenation.
Above treatment process is for the lower sewage of water inlet C/N numeric ratio, and ensure total nitrogen standard water discharge, must outsourcing carbon source add, carbon source adds cost about 0.2 yuan/ton of water, and except increase production cost, too increasing carbon emission amount, is unsustainable treatment process.
Adsorption biodegradation and bio-adsorption oxidation (Adsorption Biodegradation is called for short AB technique), wherein A section is biological adsorption stage, and B section is biological oxidation panel.Aeration tank is divided into high underload two sections by this technique, respectively has independently precipitation and sludge recirculation system.The high loading section A section residence time is about 20-40 minute, act as master with biological treatment, and meeting oxidizing reaction cannot not occur completely simultaneously, and biology is mainly the bacterial flora of short generation, removes BOD and reaches more than 50%.B section is similar to conventional activated sludge, and load is lower, and mud is longer for age.This technique de-carbon is effective, save energy consumption, but Nitrogen/Phosphorus Removal is bad.
So the situation more according to south China low-carbon-source sewage, make full use of carbon source own, not needing to add external carbon source just can have efficiency denitrification and dephosphorization to become the R&D direction of sewage treatment process from now on.
Utility model content
The purpose of this utility model is to provide a kind of carbon source making full use of sewage itself, reduces additional carbon cost and power consumption cost, and can reclaim the denitrification dephosphorization apparatus of nitrogen phosphorus.
For achieving the above object, the technical scheme that the utility model adopts is: a kind of denitrification dephosphorization apparatus, it is characterized in that: according to the treating processes of sewage, be communicated with successively from front to back and be provided with biological adsorption pond, settling tank, nitrated/denitrification sequencing batch pond, in described settling tank, nitrated/denitrification sequencing batch pond one end, according to the treatment scheme of mud, be communicated with successively from front to back and be provided with hydrolysed ferment reactor, sludge dewatering equipment, MAP reactor, described MAP reactor last connection with nitrated/denitrification sequencing batch pond forms loop.
Preferably, in described biological adsorption pond, aerator is installed.
Preferably, be provided with mud scraper and sludge pump in described settling tank, mud is drained into hydrolysed ferment reactor by sludge pump.
Preferably, described nitrated/denitrification sequencing batch pond bottom be provided with aerator, agitator, water decanter and sludge pump.
Preferably, described hydrolysed ferment reactor is provided with agitator.
Preferably, described sludge dewatering equipment can select plate-and-frame filter press or centrifuge or expeller.
After the utility model adopts said structure, the organism in absorption water inlet is retained in a large number by biological adsorption pond, these organism produce volatile acid as carbon source in hydrolysed ferment reactor, remaining organism in nitrated/denitrification sequencing batch pond aerobic oxidation sewage, be nitrate nitrogen by mineralized nitrogen, and the carbon source utilizing hydrolysed ferment reactor to produce is by nitrate nitrogen denitrification denitrogenation, the nitrogen phosphorus after MAP reactor recycle-water hydrolysis and fermentation reactor in sewage.The utility model effectively can utilize the carbon source in sewage, and can reclaim the nitrogen phosphor resource in sewage, and denitrification does not need outsourcing carbon source, saves carbon source cost, energy-saving and cost-reducing.
Accompanying drawing explanation
Fig. 1 is structure iron of the present utility model.
In figure: 1, biological adsorption pond, 2, settling tank, 3, nitrated/denitrification sequencing batch pond, 4, hydrolysed ferment reactor, 5, sludge dewatering equipment, 6, MAP reactor.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail:
As shown in the figure, for achieving the above object, the technical scheme that the utility model adopts is: a kind of denitrification dephosphorization apparatus, it is characterized in that: according to the treating processes of sewage, be communicated with successively from front to back and be provided with biological adsorption pond 1, settling tank 2, nitrated/denitrification sequencing batch pond 3, in described settling tank 2, nitrated/denitrification sequencing batch pond 3 one end, according to the treatment scheme of mud, be communicated with successively from front to back and be provided with hydrolysed ferment reactor 4, sludge dewatering equipment 5, MAP reactor 6, described MAP reactor 6 last connection with nitrated/denitrification sequencing batch pond 3 forms loop.
Preferably, in described biological adsorption pond 1, aerator is installed.
Preferably, in described settling tank 2, be provided with mud scraper and sludge pump, mud is drained into hydrolysed ferment reactor 4 by sludge pump.
Preferably, described nitrated/denitrification sequencing batch pond 3 bottom be provided with aerator, agitator, water decanter and sludge pump.
Preferably, described hydrolysed ferment reactor 4 is provided with agitator.
Preferably, described sludge dewatering equipment 5 can select plate-and-frame filter press or centrifuge or expeller.
Embodiment:
Efficient denitrification when realizing in this denitrification dephosphorization apparatus working process intaking low-carbon-source, stable water outlet is up to standard, reduces surplus sludge volume, can also reclaim nitrogen phosphor resource.
Need sewage to be processed after the pre-treatment such as thickness grid and sand setting, first flow into biological adsorption pond 1, dwell time of sewage only has 30 ~ 40min, and sludge age is only 0.3 ~ 0.5d.Sludge age is higher, eukaryote cannot survive, only have some from generation to generation short protokaryon bacterium could adapt to survive and be able to growth and breeding, the impact load of biological adsorption pond to water quality, the water yield, pH value and toxic substance has fabulous shock absorption, BOD clearance more than 60%, the sludge quantity produced is comparatively large, accounts for about 80% of whole treatment system sludge yield, and organic content in excess sludge is high.
Biological adsorption pond 1 water outlet enters settling tank 2 and precipitates, the mud sludge pump after precipitation be delivered to hydrolysed ferment reactor 4 be hydrolyzed fermentation produce carbon source.Control sludge pump flow, continuous spoil disposal.
Settling tank 2 water outlet enters nitrated/denitrification sequencing batch pond 3, carries out the denitrification denitrogenation of organics removal, the nitration reaction of ammonia nitrogen, the aerobic absorption of phosphorus and nitrate nitrogen, by water decanter draining after being disposed.
The mud pump delivery that settling tank 2 and nitrated/denitrification sequencing batch pond 3 produce is to hydrolysed ferment reactor 4, about 15 hours residence time, here anaerobic reaction is to subordinate phase for mud, and volatile acid not methane phase is produced in hydrolysis, organonitrogen is converted into ammonia nitrogen simultaneously, and carries out phosphatic release.
Mud after sludge dewatering equipment 5 pairs of hydrolysed ferments carries out solid-liquid separation, and mud cake outward transport is disposed, the carbon source containing higher concentration in parting liquid, ammonia nitrogen and phosphoric acid salt.After parting liquid enters MAP reactor 6, produce magnesium ammonium phosphate recovery nitrogen phosphor resource by adding magnesium chloride.The parting liquid removing nitrogen phosphorus is delivered to nitrated/denitrification sequencing batch pond 3 and carries out denitrification denitrogenation as carbon source.
The above is preferred implementation of the present utility model; certainly the interest field of the utility model can not be limited with this; should be understood that; for those skilled in the art; the technical solution of the utility model is modified or equivalent replacement, do not depart from the protection domain of technical solutions of the utility model.
Claims (6)
1. a denitrification dephosphorization apparatus, it is characterized in that: according to the treating processes of sewage, be communicated with successively from front to back and be provided with biological adsorption pond (1), settling tank (2), nitrated/denitrification sequencing batch pond (3), in described settling tank (2), nitrated/denitrification sequencing batch pond (3) one end, according to the treatment scheme of mud, be communicated with successively from front to back and be provided with hydrolysed ferment reactor (4), sludge dewatering equipment (5), MAP reactor (6), described MAP reactor (6) last connection with nitrated/denitrification sequencing batch pond (3) forms loop.
2. denitrification dephosphorization apparatus according to claim 1, is characterized in that: in described biological adsorption pond (1), be provided with aerator.
3. denitrification dephosphorization apparatus according to claim 1, is characterized in that: in described settling tank (2), be provided with mud scraper and sludge pump, mud is drained into hydrolysed ferment reactor (4) by sludge pump.
4. denitrification dephosphorization apparatus according to claim 1, is characterized in that: described nitrated/denitrification sequencing batch pond (3) bottom is provided with aerator, agitator, water decanter and sludge pump.
5. denitrification dephosphorization apparatus according to claim 1, is characterized in that: described hydrolysed ferment reactor (4) is provided with agitator.
6. denitrification dephosphorization apparatus according to claim 1, is characterized in that: described sludge dewatering equipment (5) can select plate-and-frame filter press or centrifuge or expeller.
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| CN201520050326.5U CN204417293U (en) | 2015-01-26 | 2015-01-26 | A kind of denitrification dephosphorization apparatus |
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| CN201520050326.5U CN204417293U (en) | 2015-01-26 | 2015-01-26 | A kind of denitrification dephosphorization apparatus |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105366889A (en) * | 2015-11-26 | 2016-03-02 | 中国市政工程华北设计研究总院有限公司 | High-standard urban sewage nitrogen and phosphorus removal system without external carbon sources |
| CN106517649A (en) * | 2016-11-14 | 2017-03-22 | 江南大学 | Sewage deep dentrification and dephosphorization method |
| CN106565055A (en) * | 2016-09-30 | 2017-04-19 | 江南大学 | Deep nitrogen removal method for sewage |
| CN106630410A (en) * | 2016-12-14 | 2017-05-10 | 江南大学 | Sewage nitrogen and phosphorus removal device and application thereof |
| CN107973406A (en) * | 2017-12-12 | 2018-05-01 | 广州市国千环境与节能技术研究院 | One kind realizes dirty Organic substance in water and the separated apparatus and method of ammonia nitrogen |
| CN109231711A (en) * | 2018-11-06 | 2019-01-18 | 江苏澳洋生态园林股份有限公司 | A kind of black-odor riverway sewage disposal system and method |
-
2015
- 2015-01-26 CN CN201520050326.5U patent/CN204417293U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105366889A (en) * | 2015-11-26 | 2016-03-02 | 中国市政工程华北设计研究总院有限公司 | High-standard urban sewage nitrogen and phosphorus removal system without external carbon sources |
| CN105366889B (en) * | 2015-11-26 | 2018-02-06 | 中国市政工程华北设计研究总院有限公司 | A kind of town sewage high standard denitrification dephosphorization system without additional carbon |
| CN106565055A (en) * | 2016-09-30 | 2017-04-19 | 江南大学 | Deep nitrogen removal method for sewage |
| CN106517649A (en) * | 2016-11-14 | 2017-03-22 | 江南大学 | Sewage deep dentrification and dephosphorization method |
| CN106517649B (en) * | 2016-11-14 | 2020-01-21 | 江南大学 | Method for deep nitrogen and phosphorus removal of sewage |
| CN106630410A (en) * | 2016-12-14 | 2017-05-10 | 江南大学 | Sewage nitrogen and phosphorus removal device and application thereof |
| CN107973406A (en) * | 2017-12-12 | 2018-05-01 | 广州市国千环境与节能技术研究院 | One kind realizes dirty Organic substance in water and the separated apparatus and method of ammonia nitrogen |
| CN107973406B (en) * | 2017-12-12 | 2023-10-03 | 广州市蕴泰电力成套设备有限公司 | Device and method for separating organic matters and ammonia nitrogen in sewage |
| CN109231711A (en) * | 2018-11-06 | 2019-01-18 | 江苏澳洋生态园林股份有限公司 | A kind of black-odor riverway sewage disposal system and method |
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