CN201495153U - Waste water enhanced nitrogen removal dephosphorization device - Google Patents
Waste water enhanced nitrogen removal dephosphorization device Download PDFInfo
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- CN201495153U CN201495153U CN2009202315886U CN200920231588U CN201495153U CN 201495153 U CN201495153 U CN 201495153U CN 2009202315886 U CN2009202315886 U CN 2009202315886U CN 200920231588 U CN200920231588 U CN 200920231588U CN 201495153 U CN201495153 U CN 201495153U
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Abstract
The utility model discloses a waste water enhanced nitrogen removal dephosphorization device which comprises an anoxic zone and an aerobic zone, the bottoms of the anoxic zone and the aerobic zone are communicated, a turntable is arranged in the anoxic zone, a membrane module is arranged on the aerobic zone, an aerator is arranged on the bottom of the aerobic zone, a dephosphorizing agent storage tank is arranged on the top portion of the aerobic zone, and a return pump which can convey waste water in the aerobic zone to the anoxic zone is arranged in the aerobic zone. The waste water enhanced nitrogen removal dephosphorization device has strong nitrogen removal dephosphorization function, simple operation, small energy consumption, economy, practicability and small occupied area, and is especially suitable for regions that run short of land resources, such as communities and factories.
Description
Technical field
The utility model belongs to the sewage treatment project field, is specifically related to a kind of device of waste water intensified denitrification and dephosphorization.
Background technology
In recent decades,, this is to the utmostly constantly polluted for limited water resource, cause the water resources water quality deterioration along with the quickening of modernization of the country process, ecosystem havoc, the most serious with the water surrounding eutrophication problem especially.Yet traditional technology is limited in one's ability to the removal of nitrogen phosphorus mostly at organic removal, can't contain the further deterioration of water body.
China's 2002 " urban wastewater treatment firm pollutant emission standard " (GB18918-2002) has clearly stipulated total phosphorus, ammonia nitrogen and total nitrogen emission standard: total phosphorus≤0.5mg/L, ammonia nitrogen≤5mg/L, total nitrogen≤15mg/L (one-level A standard).
Traditional synchronous biological denitrification process mainly contains anoxic/aerobic denitrification process, anaerobic/anoxic/aerobic denitrification process, sequence batch (biological denitrification process, A-B method biological denitrification process etc., but very big defective is arranged.A for example
2/ O denitrification process, floor space is big, energy consumption is big, complicated operation, the uppity shortcoming of operational conditions, the more important thing is that they are not good to TN and TP removal effect, and water outlet TN and TP are difficult to reach simultaneously one-level A standard.Because in traditional biological denitrification phosphorous removal technique, for satisfying the requirement of dephosphorization, shorter sludge age has determined not have the nitrifier of sufficient amount to finish the biological nitration effect on the one hand; On the other hand, the relatively poor nitrifier regular meeting of flocculence is taken out of by the water outlet of second pond, and the minimizing of nitrifier quantity influences nitrification, and then has reduced the nitric efficiency in addition of system.With regard to dephosphorization, rely on biological phosphate-eliminating to obtain satisfied phosphor-removing effect, report is not arranged at present as yet, all be to reach the purpose of stablizing dephosphorization mostly by adding chemical agent.The membrane bioreactor that is used for denitrogenation dephosphorizing mostly is anoxic, aerobic combining, their effluent qualities are better than the traditional biological denitrification dephosphorization technique, but do not reach the advanced treatment requirement yet, want to improve the effluent quality standard, need to increase preposition pre-treatment facility or follow-up advanced treatment is carried out in water outlet, this has not only increased the required floor space of sewage disposal, has also increased the cost of sewage disposal, is unfavorable for applying of membrane bioreactor.So comprehensive water outlet is up to standard and processing cost considers that traditional synchronous biological denitrification dephosphorization technique and membrane biological reactor process are difficult to meet the demands.
Summary of the invention
Technical problem to be solved in the utility model is that existing membrane bioreactor is transformed, and a kind of device of waste water intensified denitrification and dephosphorization is provided.
For solving the problems of the technologies described above, the technical scheme that the utility model adopted is as follows:
A kind of device of waste water intensified denitrification and dephosphorization, it comprises oxygen-starved area and two unit of aerobic zone, oxygen-starved area and aerobic zone bottom are connected; Be provided with rotating disk in the oxygen-starved area; Be provided with membrane module in the aerobic zone, the aerobic zone bottom is provided with aerating apparatus, and the aerobic zone top is provided with dephosphorization medicament storage tank, is provided with the reflux pump that the waste water in the aerobic zone can be transferred to the oxygen-starved area in the aerobic zone.
Wherein, described rotating disk completely or partially is positioned at below the liquid level of waste water.The disc surfaces biofilm can be used for fixing the denitrifying bacteria in the mud simultaneously to waste water in the anoxic pond and mud mixing stirring, and rotating disk provides power by motor.
Wherein, described membrane module is flat sheet membrane, tubular membrane or hollow-fibre membrane.
Wherein, in the described dephosphorization medicament storage tank polymerize aluminum chloride or poly-ferric chloride are housed, can carry the chemical dephosphorization medicament to aerobic zone continuously.
Wherein, described oxygen-starved area, its top are open or enclosed.It is open that to be the top be the uncovered state or opening is arranged on top cover; Imperforation is covered at the closed top that is.
Wherein, described aerobic zone, its top is open.
Wherein, optimized technical scheme of the utility model is to be provided with the slope in the bottom, oxygen-starved area, and the lower-most point on slope is positioned at the zone of oxygen-starved area and aerobic zone connection.Slope and horizontal plane angle of inclination are 10 °～60 °.The position on slope places the bottommost of oxygen-starved area, and does not influence the rotation of rotating disk.
Wherein, aerating apparatus can be created aerobic environment and can wash away film surface in the membrane module.
During use, waste water enters the oxygen-starved area, again under the stirring of rotating disk, mixes (but mud life-time service) with mud in the oxygen-starved area, the microorganism in the mud can film attached to rotating disk on, strengthen denitrification effect.Mud mixed liquid enters aerobic zone (perhaps flowing into aerobic zone through the slope by action of gravity) through flow channels, behind the abundant aeration of aerating system, part mixed solution is back to oxygen-starved area strengthened denitrification (control of reflux ratio is 100～400%) through reflux pump, another part obtains water outlet after then filtering by membrane module, and the dephosphorization system of aerobic zone setting makes this method have the effect of synchronous chemical dephosphorization.
Beneficial effect:
Waste water intensified denitrification and dephosphorization device of the present utility model is compared with existing anoxic/aerobic-membrane bioreactor, and the utility model plant area space and power consumption change little, but organism is handled and the denitrogenation dephosphorizing function is strengthened to some extent.Waste water intensified denitrification and dephosphorization device of the present utility model has membrane bioreactor good effect of separating solid from liquid, anti-shock loading, floor space is little and biomembrance process has fine treatment effect, advantages such as higher synchronous nitration denitrification denitrogenation effect are arranged sewage of low concentration.Concrete division is as follows:
1) efficient denitrification requires long mud age, and sludge volume is few.Efficient dephosphorization requires mud short age, and sludge volume is big.Therefore there is the contradiction that mud is difficult to be in harmonious proportion age in the synchronous denitrification dephosphorizing of sewage.This programme has increased anoxic section denitrifying bacteria quantity by the microbial film that blodisc adheres to.The denitrifying bacteria that adheres on the microbial film does not run off with spoil disposal, has avoided in the conventional film bio-reactor causing contradiction between denitrogenation and dephosphorization because of spoil disposal; In addition, the microbial film on the rotating disk is thicker, has dissolved oxygen gradient from inside to outside, to aerobic, the anoxic microenvironment of interior formation, can carry out synchronous nitration denitrification denitrogenation from outer.
2) present method can reduce traditional biochemical processing process sludge volume.Food chain length on the microbial film on the rotating disk and complexity make that the sludge quantity specific activity mud method that produces in the biofilm treatment system is low;
The chemical phosphorus removal system of 3) setting up in biological phosphate-eliminating, has increased the effect of chemical dephosphorization, can fully improve the effect of dephosphorization.Guarantee that effluent quality reaches " urban wastewater treatment firm pollutant emission standard " primary standard A standard (GB18918-2002).
Description of drawings
Accompanying drawing is the structural representation of waste water intensified denitrification and dephosphorization device of the present utility model.
Wherein 1 is rotating disk, and 2 are dephosphorization medicament storage tank, and 3 is aeration head, and 4 is membrane module, and 5 is blower fan, and 6 is reflux pump, and 7 is the slope.
Embodiment:
Further specify below in conjunction with drawings and Examples.
Embodiment 1:
Accompanying drawing is preferred experimental program of the present invention, drawings attached as can be known, the device of waste water intensified denitrification and dephosphorization of the present utility model, it comprises oxygen-starved area and two unit of aerobic zone, oxygen-starved area and aerobic zone bottom is connected; Be provided with rotating disk 1 in the oxygen-starved area, the bottom, oxygen-starved area is provided with slope 7, and slope 7 is 30 ° with the horizontal plane angle of inclination, and the lower-most point on slope 7 is positioned at the zone of oxygen-starved area and aerobic zone connection; Be provided with membrane module 4 (membrane module 4 is flat sheet membrane, tubular membrane or hollow-fibre membrane) in the aerobic zone, the aerobic zone bottom is provided with aerating apparatus 3, aerating apparatus 3 links to each other with blower fan 5 provides aeration, the aerobic zone top is provided with dephosphorization medicament storage tank 2 (built-in polymerize aluminum chloride or poly-ferric chloride), is provided with the reflux pump 6 that the waste water in the aerobic zone can be transferred to the oxygen-starved area in the aerobic zone.
During use, waste water enters the oxygen-starved area, again under the stirring of rotating disk 1, mix with the mud in the oxygen-starved area, microorganism in the mud can film attached to rotating disk 1 on, strengthen denitrification effect, pollutent can be degraded on rotating disk film surface, wherein the part total nitrogen can be removed because of the synchronous nitration and denitrification effect, simultaneously anaerobic phosphorus release.Mud mixed liquid enters aerobic zone through the flow channels that the bottom, oxygen-starved area is provided with by the gravitational settling effect, through aerating apparatus 3 abundant aerations, utilizes aerobic environment, and aerobic bacteria is to COD, NH in the sewage
3-N etc. degrade and excessively inhale phosphorus.At last, part mixed solution is back to oxygen-starved area strengthened denitrification (control of reflux ratio is 100～400%) through reflux pump, another part obtains water outlet after then filtering by membrane module 4, and the dephosphorization system of aerobic zone setting makes this method have the effect of synchronous chemical dephosphorization.
Embodiment 2:
The device that adopts embodiment 1 to describe, the oxygen-starved area is complete closed not.At residence time 6h, aeration rate 4m
3/ h, gas-water ratio 1: 20～1: 30, aerobic zone dissolved oxygen are higher than 3mg/L, reflux ratio 200%, sludge concentration 4000～7000mg/L, add under the full iron amount 10mg/L condition, and pollutant removal is as shown in table 1.
Table 1 embodiment 2 water treatment effects
By table 1 as seen, compare with the normal film bio-reactor, the utility model device effluent COD concentration descends NH to some extent
3It is good that-N removal effect keeps, and the TN clearance increases by 5 percentage points, and water outlet TP is not reduced to below the present 0.5mg/L by up to standard especially, and clearance has increased by 40 percentage points.This shows that the intensified denitrification and dephosphorization effect of this system is obvious.
Embodiment 3:
Consistent with the operational conditions of embodiment 1, unique difference is the oxygen-starved area complete closed, and its pollutant removal is as shown in table 2.
Table 2 embodiment 3 water treatment effects
| Index | Water inlet | Water outlet | Clearance |
| COD | 240 | 24 | 90％ |
| NH 3-N | 18 | 0.2 | 98.88％ |
| Index | Water inlet | Water outlet | Clearance |
| TN | 20 | 7 | 65％ |
| TP | 2.5 | 0.25 | 90％ |
Behind the complete closed oxygen-starved area, other index does not have influence, and the total nitrogen removal effect makes moderate progress, and clearance is compared with embodiment 2 increases by 5 percentage points.
Claims (8)
1. the device of a waste water intensified denitrification and dephosphorization is characterized in that it comprises oxygen-starved area and two unit of aerobic zone, and oxygen-starved area and aerobic zone bottom are connected; Be provided with rotating disk (1) in the oxygen-starved area; Be provided with membrane module (4) in the aerobic zone, the aerobic zone bottom is provided with aerating apparatus (3), and the aerobic zone top is provided with dephosphorization medicament storage tank (2), is provided with the reflux pump (6) that the waste water in the aerobic zone can be transferred to the oxygen-starved area in the aerobic zone.
2. the device of waste water intensified denitrification and dephosphorization according to claim 1 is characterized in that described rotating disk (1) completely or partially is positioned at below the liquid level of waste water.
3. the device of waste water intensified denitrification and dephosphorization according to claim 1 is characterized in that described membrane module (4) is flat sheet membrane, tubular membrane or hollow-fibre membrane.
4. the device of waste water intensified denitrification and dephosphorization according to claim 1 is characterized in that in the described dephosphorization medicament storage tank (2) polymerize aluminum chloride or poly-ferric chloride being housed.
5. the device of waste water intensified denitrification and dephosphorization according to claim 1 is characterized in that described oxygen-starved area, and its top is open or enclosed.
6. the device of waste water intensified denitrification and dephosphorization according to claim 1 is characterized in that described aerobic zone, and its top is open.
7. according to the device of any described waste water intensified denitrification and dephosphorization in the claim 1 to 6, it is characterized in that the bottom, oxygen-starved area is provided with slope (7), the lower-most point of slope (7) is positioned at the zone of oxygen-starved area and aerobic zone connection.
8. the device of waste water intensified denitrification and dephosphorization according to claim 7 is characterized in that described slope (7) and horizontal plane angle of inclination are 10 °～60 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202315886U CN201495153U (en) | 2009-09-01 | 2009-09-01 | Waste water enhanced nitrogen removal dephosphorization device |
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| CN2009202315886U CN201495153U (en) | 2009-09-01 | 2009-09-01 | Waste water enhanced nitrogen removal dephosphorization device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103739168A (en) * | 2014-01-20 | 2014-04-23 | 天津机科环保科技有限公司 | Integrated high-efficiency micro-power biochemical treatment box |
| CN104556558A (en) * | 2014-12-04 | 2015-04-29 | 中国科学院生态环境研究中心 | Sewage recycling integrated system and operating method capable of enhancing organic matter and ammonia nitrogen removal |
| CN104591473A (en) * | 2013-11-01 | 2015-05-06 | 中国石油化工股份有限公司大连石油化工研究院 | Advanced nitrogen and phosphorus removal technology |
| CN111533248A (en) * | 2020-04-20 | 2020-08-14 | 中麒赋能水务科技股份有限公司 | Synchronous built-in denitrification system |
-
2009
- 2009-09-01 CN CN2009202315886U patent/CN201495153U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104591473A (en) * | 2013-11-01 | 2015-05-06 | 中国石油化工股份有限公司大连石油化工研究院 | Advanced nitrogen and phosphorus removal technology |
| CN103739168A (en) * | 2014-01-20 | 2014-04-23 | 天津机科环保科技有限公司 | Integrated high-efficiency micro-power biochemical treatment box |
| CN104556558A (en) * | 2014-12-04 | 2015-04-29 | 中国科学院生态环境研究中心 | Sewage recycling integrated system and operating method capable of enhancing organic matter and ammonia nitrogen removal |
| CN104556558B (en) * | 2014-12-04 | 2017-03-08 | 中国科学院生态环境研究中心 | Reinforcing organic matter and sewage recycling integrated system and the method for operating of ammonia nitrogen removal |
| CN111533248A (en) * | 2020-04-20 | 2020-08-14 | 中麒赋能水务科技股份有限公司 | Synchronous built-in denitrification system |
| CN111533248B (en) * | 2020-04-20 | 2021-08-24 | 扶志远 | Synchronous built-in denitrification system |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100602 Termination date: 20140901 |
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