CN206828307U - A kind of sewage water intensification denitrification dephosphorization apparatus - Google Patents
A kind of sewage water intensification denitrification dephosphorization apparatus Download PDFInfo
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- CN206828307U CN206828307U CN201720380426.3U CN201720380426U CN206828307U CN 206828307 U CN206828307 U CN 206828307U CN 201720380426 U CN201720380426 U CN 201720380426U CN 206828307 U CN206828307 U CN 206828307U
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Abstract
The utility model discloses a kind of sewage water intensification denitrification dephosphorization apparatus, including anaerobic pond, crystallization reaction pond, hypoxia response pond, aerobic reaction tank and the second pond being sequentially communicated, anaerobic pond is used to receive pending sewage, the bottom of anaerobic pond and second pond passes through the first pipeline connection, hypoxia response pond and the bottom of aerobic reaction tank pass through the second pipeline connection, guide shell, motor and the agitator being connected with motor, crystallization reaction pond is set to connect the chemicals dosing plant for adding chemical agent in crystallization reaction pond；The utility model utilizes the characteristics of anaerobic pond water outlet ammonia nitrogen and higher phosphate concentration, chemical agent is added in crystallization reaction pond, the ammonia nitrogen in waste water, phosphate radical and chemical agent reaction is promoted to generate the sediment of indissoluble, remaining ammonia nitrogen then continues to react into biochemical system, the sewage disposal system that this chemical precipitation and biochemical reaction are combined solves the contradiction of sludge age, improves the effect of denitrogenation dephosphorizing.
Description
Technical field
It the utility model is related to field of sewage treatment equipment, more particularly to a kind of sewage water intensification denitrification dephosphorization apparatus.
Background technology
In recent years, as body eutrophication occur to some extent in the aggravation of environmental pollution, China rivers and lakes
Phenomenon, such as the blue algae bloom phenomenon occurred often of Dian Chi and Taihu Lake, its main cause is that ammonia nitrogen, the phosphate radical for being discharged into water system contain
Amount is higher, and abundant nutrition is provided for the growth of the plants such as blue-green algae.
Traditional wastewater treatment plant mainly uses A2O (i.e. anaerobic- anoxic- oxic) technique synchronizes denitrogenation dephosphorizing.Its work
It is as principle：In anaerobic stages, polyP bacteria is dominant bacteria, and under anaerobic, the Quadrafos that it is stored in vivo passes through
Hydrolysis is discharged in the form of phosphate radical, and synthesizes poly- beta-hydroxy fourth using its caused energy absorption small organic molecule
Hydrochlorate；In anoxic phases, the facultative denitrifying bacterium of heterotroph is dominant bacteria, and denitrifying bacterium utilizes organic matter degradable in sewage
As electron donor, using nitrate as electron acceptor, by the nitrate-nitrogen reduction in backflow mixed liquor into N2And discharge, so as to reach
To the purpose of denitrogenation；In aerobic stage, the preferential degraded for carrying out organic matter, depleted with organic matter, autotrophic type is aerobic
Nitrifier is gradually got the upper hand and carries out nitration reaction, is nitrate anion by mineralized nitrogen in water, and pass through mixed-liquor return mode
It is back to hypoxia response pond and carries out denitrification denitrogenation.Meanwhile polyP bacteria divides the Poly-β-hydroxybutyric Acid salt oxidation of internal storage
Solve and release energy, the phosphate in excessive consumption sewage a, part is used for synthesizing in Quadrafos storing body, another part
For synthesizing new cell.Excessive polyP bacteria is by aerobic stage spoil disposal discharge system, so as to reach the purpose of dephosphorization.
A2O and its improved technology are because having simple technological process, flexible operation, hydraulic detention time (HRT) short, active
The advantages such as sludge is not easy to expand, capital construction and operating cost are low, are widely used in China, but exist in actual moving process with
Lower problem：
(1)A2The requirement of the denitrogenation of O techniques and dephosphorization to sludge age is different, and sludge age is more than 15 days when nitrifying denitrogenation,
And sludge age is within 8 days during dephosphorization, sludge age can not meet the requirement of denitrogenation and dephosphorization simultaneously；
(2)A2Removal of the O techniques to nitrogen mainly by nitrification and denitrification, wherein nitrification is consumed in organic matter
Totally when just take place, and need substantial amounts of dissolved oxygen, relatively high power blower fan need to be configured, overall energy consumption is higher；
(3)A2O techniques are poor to the effect of low carbon-nitrogen ratio sewage dephosphorization denitrogenation, and need to add additional carbon can realize denitrogenation
The purpose of dephosphorization, carbon source are added so that operating cost dramatically increases；
(4)A2O techniques need periodically to discharge excess sludge in processing procedure, and these excess sludges are by anaerobism concentration nitre
After change processing, intracellular phosphate can again be discharged and entered in water, cause secondary pollution；
(5) with the raising that China is required sewage discharge, traditional A2O Process for Effluent phosphorus concentration can not reach discharge will
Ask；Conventional solution method is by setting chemical phosphorus removal system, and by adding chemical agent, indissoluble is generated with phosphate reaction
Material, but chemical agent uses virtually so that operating cost also increased.
Utility model content
The utility model is directed to existing A2A kind of the defects of O sewage disposals, there is provided new sewage water intensification denitrification dephosphorization apparatus.
In order to solve the above technical problems, the technical solution adopted in the utility model is：A kind of sewage water intensification denitrification dephosphorization dress
Put, including anaerobic pond, crystallization reaction pond, hypoxia response pond, aerobic reaction tank and the second pond being sequentially communicated, anaerobic pond are used to connect
Receive pending sewage, the bottom of anaerobic pond and second pond utilizes the first pipeline will by the first pipeline connection, the first reflux pump
The sludge reflux of second pond bottom is to anaerobic pond；Hypoxia response pond and the bottom of aerobic reaction tank are by the second pipeline connection, and
Two reflux pumps utilize the second pipeline by the mixed-liquor return of aerobic reaction tank to hypoxia response pond；Water conservancy diversion is set in crystallization reaction pond
Cylinder, motor and the agitator being connected with motor；Crystallization reaction pond connects the chemicals dosing plant for adding chemical agent；
The first aerator is provided with hypoxia response pond, is provided with the second aerator in aerobic reaction tank, the first aerator and
Second aerator is connected to blower fan.
The utility model sewage water intensification denitrification dephosphorization apparatus course of work：(1) raw sewage enters through collecting with returned sludge
Anaerobic pond is mixed, and under anaerobic, dirty water pollutant is fully hydrolyzed, and larger molecular organicses are resolved into small organic molecule
(including various small molecular organic acids, ammonia nitrogen etc.) is so as to biological utilisation.At the same time, the polyphosphoric acid that polyP bacteria stores it in vivo
Salt is discharged by hydrolyzing in the form of phosphate radical, and the poly- β of its caused energy absorption small organic molecule synthesis of utilization-
Hydroxybutyric acid salt, now ammonia nitrogen in sewage, phosphate concentration are higher, possess the sediment bar that generation indissoluble is reacted with chemical agent
Part；Sewage is 0.5~2 hour in the residence time of anaerobic pond.(2) anaerobic pond water outlet enters crystallization reaction pond；To crystallization reaction
PH is added in pond to adjust and adjust pH to 8~8.5；(3) ratio of the ammonia nitrogen in the sewage of crystallization reaction pond, phosphate radical, profit
Chemical agent (such as magnesium salts, phosphate, ammonium salt) is selectively added with chemicals dosing plant, promotes chemical agent and ammonia nitrogen, phosphate radical
The material (such as ammonium magnesium phosphate, calcium phosphate) of reaction generation indissoluble, now the ammonia nitrogen in sewage, phosphate concentration are greatly reduced,
Especially phosphate radical, clearance is up to more than 90%；Residence time of the sewage in crystallization reaction pond is 0.5~2 hour.(4) tie
Brilliant reaction tank water outlet enters hypoxia response pond, and under anoxic conditions, the facultative denitrifying bacterium of heterotroph is dominant bacteria, denitrifying bacterium
Degradable organic matter is as electron donor by the use of in sewage, using nitrate as electron acceptor, by the nitre in backflow mixed liquor
State nitrogen is reduced into N2And discharge, so as to reach the purpose of denitrogenation；Residence time of the sewage in hypoxia response pond is 2~4 hours.
(5) water outlet of hypoxia response pond enters aerobic reaction tank, under aerobic condition, the preferential degraded for carrying out organic matter, with organic matter
It is depleted, nitrifier carries out nitration reaction using remaining ammonia nitrogen in sewage, is translated into nitrate anion, and pass through mixed liquor
Reflux type is back to hypoxia response pond and carries out denitrification denitrogenation；Meanwhile polyP bacteria is by the Poly-β-hydroxybutyric Acid of internal storage
Salt oxidation Decomposition simultaneously releases energy, and absorbs the remaining phosphate in sewage, and a part is used for synthesizing in Quadrafos storing body, separately
An outer part is then used for synthesizing new cell.(6) aerobic reaction tank water outlet enters second pond progress mud-water separation, and second pond goes out
Water is sterilized reach discharge standard after be discharged into surface drainage；The sludge that sedimentation in secondary sedimentation tank is got off divides two parts：A part of sludge returns
Anaerobic pond is flow to, polyP bacteria carries out releasing phosphorus, is then return to the cyclic process that aerobic reaction tank absorbs excessive phosphorus；Another part sludge
Sent outside after concentrated press filtration processing.
The utility model can further optimize, and the connectivity part in anaerobic pond and the crystallization reaction pond is anti-positioned at crystallization
The bottom of pond pool wall is answered, the chemicals dosing plant is located at the bottom in crystallization reaction pond to the dosing mouth of crystallization reaction pond dosing.
The utility model can further optimize, and filler device is disposed with the hypoxia response pond.
The utility model can further optimize, and the blower fan is frequency conversion fan.
The utility model can further optimize, and first reflux pump and the second reflux pump are with frequency conversion work(
The reflux pump of energy.
Beneficial effect：
(1) solves the contradiction of denitrogenation and dephosphorization sludge age；In traditional handicraft, the removal of ammonia nitrogen is relied on based on biochemical reaction,
I.e. ammonia nitrogen is converted into nitrate anion through nitration reaction, now needs to consume substantial amounts of oxygen, and 1mg ammonia nitrogen need are converted according to theoretical calculation
Consume 4.57mg dissolved oxygens.Phosphate radical is then to rely on biochemical system polyP bacteria " releasing phosphorus-suction phosphorus process ", and high by discharging
Concentration phosphorus containing sludge, is removed.Both requirements to sludge age are different, nitrifier generation cycle length, it is slow-growing, it is necessary to
Longer sludge age, usually more than 15 days；And dephosphorization then requires that sludge age is shorter, usually within 8 days, therefore traditional A2O techniques
Nitrogen/Phosphorus Removal is bad.Particularly phosphate radical, to meet higher emission request, it need to be removed using chemical precipitation.
It is the characteristics of utilizing anaerobic pond water outlet ammonia nitrogen and higher phosphate concentration, in anaerobic pond the utility model proposes method
After set up crystallization reaction pond and add chemical agent, promote ammonia nitrogen, phosphate radical and the chemical agent reaction generation indissoluble in waste water
Sediment.Now the clearance of phosphate radical can reach more than 90%, almost can reach emission request, and remaining ammonia nitrogen then enters
Biochemical system continues to react.Because the removal of phosphate radical then passes through chemical precipitation and life using chemical method, the removal of ammonia nitrogen
The method that change reaction is combined, solve the contradiction of sludge age, improve the effect of denitrogenation dephosphorizing.
(2) investment cost is low；Removal of the utility model to sewage ammonia nitrogen is combined using chemical precipitation and biochemical reaction
Method, the ammonia nitrogen concentration into anaerobic-aerobic system is greatly reduced；Therefore, the construction scale of anaerobic-aerobic system also will be big
Width is reduced, and comprehensive method of investment expense is reduced.
(3) operating cost is low；In traditional handicraft, the removal of ammonia nitrogen is relied on based on biochemical reaction, i.e., ammonia nitrogen is anti-through nitrifying
Nitrate anion should be converted into, now needs to consume substantial amounts of oxygen, converting 1mg ammonia nitrogens according to theoretical calculation needs consumption 4.57mg molten
Solve oxygen.The utility model makes the ammonium phosphate of ammonia nitrogen, total phosphorus and the chemical agent of addition reaction generation indissoluble in crystallization reaction pond
Magnesium crystal separates out.Ammonia nitrogen concentration into biochemical system also declines to a great extent, and it is converted into molten needed for nitrate anion through nitration reaction
Solution oxygen also greatly reduces, and operating cost reduces.
(4) utility is reclaimed；In crystallization reaction pond, ammonia nitrogen, phosphate radical and the chemical agent that adds react, raw
Into high-purity, the sediment ammonium magnesium phosphate of indissoluble, ammonium magnesium phosphate is a kind of high-quality fertilizer, can be directly used for agricultural production.
Brief description of the drawings
Fig. 1 is the sewage water intensification denitrification dephosphorization apparatus structural representation of embodiment 1.
Fig. 2 is the sewage water intensification denitrification dephosphorization apparatus workflow diagram of embodiment 1.
Wherein：1st, anaerobic pond；2nd, crystallization reaction pond；3rd, hypoxia response pond；4th, aerobic reaction tank；5th, second pond；6th, first
Pipeline；7th, the first reflux pump；8th, the second pipeline；9th, the second reflux pump；10-1, motor；10-2, agitator；10-3, water conservancy diversion
Cylinder；11st, the first aerator；12nd, the second aerator；13rd, filler device；14th, chemicals dosing plant；15th, frequency conversion fan.
Embodiment
The utility model is described in further detail with reference to the accompanying drawings and detailed description.
Embodiment 1
As shown in figure 1, the sewage water intensification denitrification dephosphorization apparatus of the present embodiment, including the anaerobic pond 1 that is sequentially communicated, crystallization are anti-
Answer pond 2, hypoxia response pond 3, aerobic reaction tank 4 and second pond 5, anaerobic pond 1 is used to receiving pending sewage, anaerobic pond 1 with
The bottom of second pond 5 is connected by the first pipeline 6, and the first reflux pump 7 is returned the sludge of the bottom of second pond 5 using the first pipeline 6
It flow to anaerobic pond 1；Hypoxia response pond 3 is connected with the bottom of aerobic reaction tank 4 by the second pipeline 8, and the second reflux pump 9 utilizes the
Two pipelines 8 are by the mixed-liquor return of aerobic reaction tank 4 to hypoxia response pond 3；Guide shell 10-3 is set in crystallization reaction pond 2, driven
The dynamic motor 10-1 and agitator 10-2 being connected with motor 10-1；Crystallization reaction pond 2 is connected for adding chemical agent
Chemicals dosing plant 14；The first aerator 11 and filler device 13 are provided with hypoxia response pond 3, is provided with aerobic reaction tank 4
Second aerator 12, the first aerator 11 and the second aerator 12 are connected to frequency conversion fan 15.The He of anaerobic pond 1
The connectivity part in crystallization reaction pond 2 is located at the bottom of the pool wall of crystallization reaction pond 2, and the chemicals dosing plant 14 is to the dosing of crystallization reaction pond 2
Dosing mouth be located at the bottom in crystallization reaction pond 2.The reflux pump 9 of first reflux pump 7 and second is with frequency conversion function
Reflux pump.
As shown in Fig. 2 the workflow of the sewage water intensification denitrification dephosphorization apparatus of the present embodiment is：
(1) waste water enters regulating reservoir through collecting, then is lifted into anaerobic pond by pump and is mixed with returned sludge, and anaerobic pond stops
Time is 1.5h；Under anaerobic, dirty water pollutant is fully hydrolyzed acidifying, and larger molecular organicses are resolved into various small points
The small organic molecules such as sub- organic acid, ammonia nitrogen, so as to biological utilisation；At the same time, the polyphosphoric acid that polyP bacteria stores it in vivo
Salt is discharged by hydrolyzing in the form of phosphate radical, and the poly- β of its caused energy absorption small organic molecule synthesis of utilization-
Hydroxybutyric acid salt, now ammonia nitrogen in sewage, phosphate concentration are higher.
(2) anaerobic pond water outlet enters crystallization reaction pond 2, and waste water stops 20min in crystallization reaction pond 2；According in sewage
Ammonia nitrogen, the ratio of phosphate radical, add a certain amount of magnesia, control pH be 8.5 or so, generate ammonium magnesium phosphate.
(3) water outlet of crystallization reaction pond 2 mixes with the backflow mixed liquor of aerobic reaction tank 4, and into hypoxia response pond 3, sewage exists
3h is stopped in hypoxia response pond 3；Under anoxic conditions, the facultative denitrifying bacterium of heterotroph is dominant bacteria, and denitrifying bacterium utilizes dirt
Degradable organic matter is as electron donor in water, using nitrate as electron acceptor, by the nitrate nitrogen in backflow mixed liquor also
It is former into N2And discharge, so as to reach the purpose of denitrogenation.
(4) water outlet of hypoxia response pond 3 enters aerobic reaction tank 4, and waste water stops 6h in aerobic reaction tank 4.In aerobic bar
Under part, the degraded of organic matter is carried out first, while polyP bacteria by the Poly-β-hydroxybutyric Acid salt oxidation Decomposition of internal storage and is released
Exoergic amount, the phosphate in excessive consumption sewage, a part are used for synthesizing in Quadrafos storing body, and another part is used for closing
Cheng Xin cell；Depleted with organic matter, nitrifier carries out nitration reaction using remaining ammonia nitrogen in sewage, and ammonia nitrogen is turned
Turn to nitrate anion and hypoxia response pond 3 is back to by mixed-liquor return mode and carry out anti-nitration reaction, be converted into nitrogen, realize
The removal of nitrogen.
(5) water outlet of aerobic reaction tank 4 enters the progress mud-water separation of second pond 5, and the sterilized discharge standard that reaches of water outlet is discharged into
Surface drainage；The sludge that second pond 5 precipitates divides two parts：To anaerobic pond, polyP bacteria carries out releasing phosphorus a part of sludge reflux,
It is then return to the cyclic process that aerobic reaction tank 4 absorbs excessive phosphorus；Sent outside after the concentrated press filtration processing of another part sludge.
Although embodiment of the present utility model is illustrated in specification, these embodiments are intended only as carrying
Show, should not limit the scope of protection of the utility model.Various omissions are carried out in the range of the utility model aims are not departed from, are put
Change and change should be included in the scope of protection of the utility model.
Claims (5)
- A kind of 1. sewage water intensification denitrification dephosphorization apparatus, it is characterised in that：Including be sequentially communicated anaerobic pond, crystallization reaction pond, lack Oxygen reaction tank, aerobic reaction tank and second pond, anaerobic pond are used to receive pending sewage, and the bottom of anaerobic pond and second pond leads to The first pipeline connection is crossed, the first reflux pump utilizes the first pipeline by the sludge reflux of second pond bottom to anaerobic pond；Hypoxia response By the second pipeline connection, the second reflux pump utilizes the second pipeline by the mixing of aerobic reaction tank for pond and the bottom of aerobic reaction tank Liquid is back to hypoxia response pond；Guide shell, motor and the agitator being connected with motor are set in crystallization reaction pond；Knot Brilliant reaction tank connects the chemicals dosing plant for adding chemical agent；The first aerator is provided with hypoxia response pond, it is aerobic anti- The second aerator is provided with Ying Chi, the first aerator and the second aerator are connected to blower fan.
- 2. sewage water intensification denitrification dephosphorization apparatus according to claim 1, it is characterised in that：The anaerobic pond and crystallization reaction The connectivity part in pond is located at the bottom of crystallization reaction pond pool wall, and the chemicals dosing plant is located at knot to the dosing mouth of crystallization reaction pond dosing The bottom of brilliant reaction tank.
- 3. sewage water intensification denitrification dephosphorization apparatus according to claim 1, it is characterised in that：Arranged in the hypoxia response pond There is filler device.
- 4. sewage water intensification denitrification dephosphorization apparatus according to claim 1, it is characterised in that：The blower fan is frequency conversion fan.
- 5. sewage water intensification denitrification dephosphorization apparatus according to claim 1, it is characterised in that：First reflux pump and second Reflux pump is the reflux pump with frequency conversion function.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108751572A (en) * | 2018-05-17 | 2018-11-06 | 沈阳建筑大学 | A kind of wastewater treatment equipment and method of intensified denitrification and dephosphorization |
| CN109052849A (en) * | 2018-09-03 | 2018-12-21 | 上海坤工环境科技有限公司 | Nitrogen phosphorus biochemical processing method in a kind of sewage |
| CN111718030A (en) * | 2020-06-30 | 2020-09-29 | 施成允 | Sewage nitrogen and phosphorus removal equipment |
| CN113045117A (en) * | 2021-03-16 | 2021-06-29 | 湖南艾布鲁环保科技股份有限公司 | Intelligent integrated sewage treatment equipment and sewage treatment method |
| US20220119289A1 (en) * | 2019-02-04 | 2022-04-21 | Cnp Cycles Gmbh | Process for recovering phosphorus |
-
2017
- 2017-04-12 CN CN201720380426.3U patent/CN206828307U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108751572A (en) * | 2018-05-17 | 2018-11-06 | 沈阳建筑大学 | A kind of wastewater treatment equipment and method of intensified denitrification and dephosphorization |
| CN109052849A (en) * | 2018-09-03 | 2018-12-21 | 上海坤工环境科技有限公司 | Nitrogen phosphorus biochemical processing method in a kind of sewage |
| US20220119289A1 (en) * | 2019-02-04 | 2022-04-21 | Cnp Cycles Gmbh | Process for recovering phosphorus |
| CN111718030A (en) * | 2020-06-30 | 2020-09-29 | 施成允 | Sewage nitrogen and phosphorus removal equipment |
| CN113045117A (en) * | 2021-03-16 | 2021-06-29 | 湖南艾布鲁环保科技股份有限公司 | Intelligent integrated sewage treatment equipment and sewage treatment method |
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Denomination of utility model: An enhanced nitrogen and phosphorus removal device for sewage Effective date of registration: 20201208 Granted publication date: 20180102 Pledgee: Chengdong Branch of Nanjing Bank Co.,Ltd. Pledgor: JIANGSU ZHENYI ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd. Registration number: Y2020320000243 |
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Address after: 210012 rooms 602, 603, 604 and 605, building 1, No. 32, Dazhou Road, Yuhuatai District, Nanjing City, Jiangsu Province Patentee after: Jiangsu Zhenyi Environmental Protection Technology Co.,Ltd. Address before: Room 1016, 10th floor, 28 ningshuang Road, Yuhuatai District, Nanjing City, Jiangsu Province, 210000 Patentee before: JIANGSU ZHENYI ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd. |
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