CN101250007A - Denitrification nitrogen and phosphorus removal urban sewage treatment method and device - Google Patents
Denitrification nitrogen and phosphorus removal urban sewage treatment method and device Download PDFInfo
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- CN101250007A CN101250007A CNA2008100493501A CN200810049350A CN101250007A CN 101250007 A CN101250007 A CN 101250007A CN A2008100493501 A CNA2008100493501 A CN A2008100493501A CN 200810049350 A CN200810049350 A CN 200810049350A CN 101250007 A CN101250007 A CN 101250007A
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Abstract
The invention discloses a municipal sewage treatment method and a device thereof for nitrogen removal by denitrification and phosphorous removal, which comprises an anaerobic tank, a nitrification tank, a denitrification tank and an aeration tank which are sequentially communicated, wherein in the anaerobic tank, the primary sludge passes through a solid-liquid separation device under stirring action, then the supernatant fluid enters the nitrification tank, and the sludge enters the denitrification tank by a sludge discharge pipe. In the nitrification tank, under the aeration effect, the supernatant fluid passes through the solid-liquid separation device and enters the denitrification tank, and the sludge returns to the nitrification tank by a sludge discharge pipe of the solid-liquid separation device. In the denitrification tank, under the stirring action, the sludge enters the aeration tank. In the aeration tank, under the aeration effect, the supernatant fluid is discharged by the solid-liquid separation device, parts of the sludge returns to the anaerobic tank by the sludge discharge pipe, and the residual sludge is discharged. The municipal sewage treatment method and a device thereof for nitrogen removal by denitrification and phosphorous removal has the advantages of small amount of reactors and procedures, high reactor effective capacity and high efficiency.
Description
Technical field
The present invention relates to a kind of method for the treatment of city waste water, especially a kind of denitrification nitrogen and phosphorus removal urban sewage treatment method also relates to the device of this method, belongs to environmental technology field.
Background technology
The eutrophication of the water body that nitrogen phosphorus excessive emissions causes is that present water pollutes the significant problem that exists, also make sewage disposal technology from single removal organism (COD) being the advanced treatment stage that has entered in stage of purpose not only to remove organism but also denitrogenation dephosphorizing, traditional biological carbon and phosphorous removal technology comprises A
2O, improvement A
2Technology such as O, oxidation ditch, though generally have the denitrogenation dephosphorizing effect, but reactor is many, complex process, the energy consumption height, often denitrification effect contradicts with phosphor-removing effect, in order to obtain denitrogenation dephosphorizing effect preferably simultaneously, need to increase mud and reflux or additional carbon, not only increased the technology working cost, and produced a large amount of excess sludges.Denitrification nitrogen and phosphorus removal is the new technology of the Sustainable development of developed recently, electron acceptor(EA) when it replaces oxygen as dephosphorization with nitrate radical, by the denitrification phosphorus-collecting bacterium denitrogenation and dephosphorization process are united two into one, can overcome the contradiction between the traditional technology denitrogenation dephosphorizing, reduce aeration rate, reduce the mud discharge capacity, be the denitrification dephosphorization technique of energy-efficient and Sustainable development.Be focus and the inexorable trend that reaches municipal effluent denitrification dephosphorization technique research from now at present.
About the denitrification nitrogen and phosphorus removal Technology, a lot of researchs are also arranged at present, be " A as invention and created name
2N denitrifying and dephosphorizing sewage treatment process and device thereof ", application number is: 200510005391.7 Chinese invention patent applications disclose a kind of A
2Pump is to anaerobic pond from water tank for N denitrifying and dephosphorizing sewage treatment process and device thereof, former water, and the muddy water of discharging in the anaerobic pond enters medium sediment pool; The supernatant liquor that medium sediment pool is discharged flows to the aerobic biologic membrane nitrification tank, carries out nitration reaction; Simultaneously, above-mentioned medium sediment pool precipitates surmounts mud, is directly pumped into anoxic pond, will surmount in 10～33% scopes that sludge quantity is controlled at flooding velocity; The processed water that above-mentioned aerobic biologic membrane nitrification tank is discharged enters anoxic pond; The processed water of discharging from anoxic pond enters quick aeration tank, is absorbed remaining phosphorus; The processed water of discharging from quick aeration tank enters final deposition pool, and supernatant liquor is discharged from rising pipe, and excess sludge is discharged from sludge pipe, and part mud branches to mud return line, and is pumped to anaerobic pond, with the returned sluge flow control at 10～40% of flooding velocity.Solve water outlet ammonia nitrogen, TN and the unmanageable problem of TP concentration, guaranteed that effluent quality is up to standard, saved energy consumption.Though this method can obtain treatment effect preferably, to carry out precipitate and separate to the denitrification phosphorus-collecting bacterium with a plurality of settling tanks in the technology, exist reactor many, step is many, and the reactor useful volume is little, inefficient weak point.
Summary of the invention
Task of the present invention provides the denitrification nitrogen and phosphorus removal urban sewage treatment method that a kind of reactor is few, step is few, efficient is high, and the device of this method also is provided.
For realizing above-mentioned task, technical solution of the present invention is:
A kind of denitrification nitrogen and phosphorus removal urban sewage treatment method comprises the steps: in anaerobic pond, the sewage after just sinking, and through equipment for separating liquid from solid, the supernatant liquor of sewage enters nitrification tank under stirring action, and mud enters the denitrification pond through shore pipe; In nitrification tank, under the aeration effect, through equipment for separating liquid from solid, the supernatant liquor of sewage enters the denitrification pond, and mud returns nitrification tank through the mud discharging mouth of equipment for separating liquid from solid; In the denitrification pond, under stirring action, sewage enters the aeration tank; In the aeration tank, under the aeration effect, through the discharging of equipment for separating liquid from solid supernatant liquor, part mud returns anaerobic pond through shore pipe, excess sludge discharge.
The device of described denitrification nitrogen and phosphorus removal urban sewage treatment method, comprise the anaerobic pond that is communicated with successively, nitrification tank, the denitrification pond, the aeration tank, it is characterized in that: on anaerobic pond and water side, aeration tank sidewall, the equipment for separating liquid from solid that top has the water outlet weir plate is set respectively, a plurality of water-ins are set on the equipment for separating liquid from solid sidewall, on the inner side-wall of the upper and lower ends of each water-in, be provided with and the angled plate of inner side-wall, in the equipment for separating liquid from solid bottom shore pipe is set, anaerobic pond equipment for separating liquid from solid shore pipe communicates with the denitrification pond, and aeration tank equipment for separating liquid from solid shore pipe communicates with anaerobic pond; On the sidewall of nitrification tank water side, the equipment for separating liquid from solid that top has the water outlet weir plate is set, on its equipment for separating liquid from solid sidewall a plurality of water-ins are set, on the inner side-wall of the upper and lower ends of each water-in, be provided with and the angled plate of inner side-wall, in the equipment for separating liquid from solid bottom mud discharging mouth is set, mud discharging mouth communicates with nitrification tank.
The present invention has that reactor is few, step is few, reactor useful volume height, advantage that efficient is high.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Embodiment
As shown in the figure, a kind of denitrification nitrogen and phosphorus removal urban sewage treatment method, in anaerobic pond A, sewage after just sinking, under agitator 1 stirring action, enter equipment for separating liquid from solid through precipitation water-in 2, the supernatant liquor of sewage enters nitrification tank B by water outlet weir plate 3 water port 4, and mud enters denitrification pond C through shore pipe 5 through pump 6 and pipeline 7; In nitrification tank B, under aeration tube 8 effects, through equipment for separating liquid from solid, the supernatant liquor of sewage enters denitrification pond C through water outlet weir plate 3 and water port 4, and mud returns nitrification tank B through the mud discharging mouth 9 of equipment for separating liquid from solid; In the C of denitrification pond, under agitator 1 stirred, sewage entered aeration tank D; In the D of aeration tank, under aeration tube 8 effects, enter equipment for separating liquid from solid through precipitation water-in 2, supernatant liquor is through water outlet weir plate 3 water outlets discharging, and part mud returns anaerobic pond A through shore pipe 5, pipeline 7 under pump 6 effects, and excess sludge is by pipeline 7 dischargings.
The device of described denitrification nitrogen and phosphorus removal urban sewage treatment method, comprise the anaerobic pond A that is communicated with successively, nitrification tank B, denitrification pond C, aeration tank D, its structure is for installing the equipment for separating liquid from solid that top has water outlet weir plate 3 respectively on anaerobic pond A and D water side, aeration tank sidewall, on the equipment for separating liquid from solid sidewall, have a plurality of precipitation water-ins 2, on the inner side-wall of the upper and lower ends of each water-in 2, install and the angled plate 10 of inner side-wall, in the equipment for separating liquid from solid bottom shore pipe 5 is installed, anaerobic pond A equipment for separating liquid from solid shore pipe 5 communicates with denitrification pond C by pipeline 7 through pump 6, and aeration tank D equipment for separating liquid from solid shore pipe 5 communicates with anaerobic pond A by pipeline 7 through pump 6; The equipment for separating liquid from solid that top has water outlet weir plate 3 is installed on the sidewall of nitrification tank B water side, a plurality of precipitation water-ins 2 are installed on its equipment for separating liquid from solid sidewall, on the inner side-wall of upper and lower ends of each precipitation water-in 2, install and the angled plate 10 of inner side-wall, establish mud discharging mouth 9 in the equipment for separating liquid from solid bottom, mud discharging mouth 9 communicates with nitrification tank B.
Claims (2)
1, a kind of denitrification nitrogen and phosphorus removal urban sewage treatment method comprises the steps: in anaerobic pond, the sewage after just sinking, and through equipment for separating liquid from solid, the supernatant liquor of sewage enters nitrification tank under stirring action, and mud enters the denitrification pond through shore pipe; In nitrification tank, under the aeration effect, through equipment for separating liquid from solid, the supernatant liquor of sewage enters the denitrification pond, and mud returns nitrification tank through the mud discharging mouth of equipment for separating liquid from solid; In the denitrification pond, under stirring action, sewage enters the aeration tank; In the aeration tank, under the aeration effect, through the discharging of equipment for separating liquid from solid supernatant liquor, part mud returns anaerobic pond through shore pipe, excess sludge discharge.
2, the device of the described denitrification nitrogen and phosphorus removal urban sewage treatment method of a kind of claim 1, comprise the anaerobic pond that is communicated with successively, nitrification tank, the denitrification pond, the aeration tank, it is characterized in that: on anaerobic pond and water side, aeration tank sidewall, the equipment for separating liquid from solid that top has the water outlet weir plate is set respectively, a plurality of water-ins are set on the equipment for separating liquid from solid sidewall, on the inner side-wall of the upper and lower ends of each water-in, be provided with and the angled plate of inner side-wall, in the equipment for separating liquid from solid bottom shore pipe is set, anaerobic pond equipment for separating liquid from solid shore pipe communicates with the denitrification pond, and aeration tank equipment for separating liquid from solid shore pipe communicates with anaerobic pond; On the sidewall of nitrification tank water side, the equipment for separating liquid from solid that top has the water outlet weir plate is set, on its equipment for separating liquid from solid sidewall a plurality of water-ins are set, on the inner side-wall of the upper and lower ends of each water-in, be provided with and the angled plate of inner side-wall, in the equipment for separating liquid from solid bottom mud discharging mouth is set, mud discharging mouth communicates with nitrification tank.
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2008100493501A CN101250007A (en) | 2008-03-03 | 2008-03-03 | Denitrification nitrogen and phosphorus removal urban sewage treatment method and device |
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| CNA2008100493501A CN101250007A (en) | 2008-03-03 | 2008-03-03 | Denitrification nitrogen and phosphorus removal urban sewage treatment method and device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102180565A (en) * | 2011-03-17 | 2011-09-14 | 清华大学 | Method and device for enhanced biological denitrogenation of municipal sewage |
| CN105174630A (en) * | 2015-09-25 | 2015-12-23 | 句容市深水水务有限公司 | Low carbon-nitrogen ratio sewage nitrogen and phosphorus removal system and method based on biotechnology |
| CN105523688A (en) * | 2014-10-16 | 2016-04-27 | 胜科工业有限公司 | Device and method for processing waste water |
| CN109205991A (en) * | 2018-09-12 | 2019-01-15 | 浦华控股有限公司 | A kind of sludge dewatering sedimenting system and method |
-
2008
- 2008-03-03 CN CNA2008100493501A patent/CN101250007A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102180565A (en) * | 2011-03-17 | 2011-09-14 | 清华大学 | Method and device for enhanced biological denitrogenation of municipal sewage |
| CN105523688A (en) * | 2014-10-16 | 2016-04-27 | 胜科工业有限公司 | Device and method for processing waste water |
| CN105174630A (en) * | 2015-09-25 | 2015-12-23 | 句容市深水水务有限公司 | Low carbon-nitrogen ratio sewage nitrogen and phosphorus removal system and method based on biotechnology |
| CN105174630B (en) * | 2015-09-25 | 2017-12-01 | 句容市深水水务有限公司 | Low carbon-nitrogen ratio sewage denitrification dephosphorization system and method based on biotechnology |
| CN109205991A (en) * | 2018-09-12 | 2019-01-15 | 浦华控股有限公司 | A kind of sludge dewatering sedimenting system and method |
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Open date: 20080827 |