CN103351058A - Pre-acidification anaerobic UASB treatment device and method for sewage - Google Patents
Pre-acidification anaerobic UASB treatment device and method for sewage Download PDFInfo
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- CN103351058A CN103351058A CN2013102422588A CN201310242258A CN103351058A CN 103351058 A CN103351058 A CN 103351058A CN 2013102422588 A CN2013102422588 A CN 2013102422588A CN 201310242258 A CN201310242258 A CN 201310242258A CN 103351058 A CN103351058 A CN 103351058A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
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Abstract
The invention relates to a pre-acidification anaerobic UASB (up-flow anaerobic sludge blanket) treatment device and method for sewage. The device comprises a regulation pool and a UASB reaction tank. A water inlet pipe is connected to the left side of the regulation pool, the bottom of which is provided with a layer of concentrated sludge. Sewage is injected into the regulation pool over the concentrated sludge through the water inlet pipe. Stirrers are symmetrically installed on two side walls in the regulation pool. The right side of the regulation pool is communicated with the UASB reaction tank through an overflow pipe. After pre-acidification treatment of the sewage in the regulation pool by acidification bacteria in the sludge, the sewage then enters the UASB reaction tank. The structure of the device is simple, and the operation process is simple. Transformation is carried out on the existing regulation pool, in which acidification bacteria are domesticated to improve the biodegradability of wastewater. The discharged water is led into the UASB reaction tank to improve the volume loading of UASB, and the anaerobic COD (chemical oxygen demand) removal rate can be effectively improved by 5%-10%.
Description
Technical field
The present invention relates to sewage treatment area, particularly relate to a kind of pre-acidifying anaerobic UASB treatment unit and method of sewage.
Background technology
Up-flow anaerobic sludge blanket (Up Flow Anaerobic Sludge Blanketk, be called for short UASB) technique is that the people such as Lettinga of Dutch Wageningen agriculture university succeed in developing between 1973-1977.At present, generally formed granule sludge in the UASB in Europe technique, this so that anaerobism USAB technique obtained rapidly in Europe popularizing.China has begun the research work of UASB reactor in 1981, this technology has obtained actual applying in China.The UASB reactor is the high-rate anaerobic reactor that is most widely used at present, and this technology has developed into one of mainstream technology of anaerobic treatment at home and abroad.
In the UASB sewage treatment process, before entering the UASB reactor, sewage all can pass through first equalizing tank, equalizing tank can be regulated the water yield and the water quality of sewage, can also regulate pH value of sewage water, water temperature etc., makes the anaerobic reaction steady running of sewage in the UASB reactor.Common equalizing tank structure is all fairly simple, generally all there is not special structure, raising to the biodegradability of sewage is limited in one's ability, anaerobism COD clearance can only be 20%～80% after entering the UASB reactor after the processing of general equalizing tank for sewage, clearance is not high, does not often reach emission standard.
Summary of the invention
Technical problem to be solved by this invention provides a kind of pre-acidifying anaerobic UASB treatment unit and method of sewage, and is simple in structure, and the anaerobism COD clearance of energy Effective Raise UASB makes the more environmental protection of sewage of discharging.
The technical solution adopted for the present invention to solve the technical problems is: the pre-acidifying anaerobic UASB treatment unit that a kind of sewage is provided, comprise equalizing tank and UASB retort, the left side of described equalizing tank is connected with water inlet pipe, the bottom of described equalizing tank is furnished with one deck thickened sludge, be injected with sewage by water inlet pipe in the equalizing tank of described thickened sludge upside, be symmetrically installed with agitator on the two side, inside of described equalizing tank, the right side of described equalizing tank is connected with the UASB retort by upflow tube.
A gas skirt is installed in the top of described equalizing tank, the area of described gas skirt account for equalizing tank the upper end open area 80%～90%.
Contain the acidifying bacterium in the described thickened sludge.
The top of described equalizing tank is installed a gas skirt and is led to the biogas pipe network with pipeline.
A kind of method of using the pre-acidifying anaerobic UASB treatment unit of sewage, step is as follows.
(a) a certain amount of thickened sludge is tiled in the bottom of equalizing tank, then in thickened sludge, adds a certain amount of nutritive salt;
(b) the acidifying bacterium in the mud to be concentrated is injected equalizing tank by water inlet pipe with sewage after raising and train and finishing;
(c) agitator that starts both sides is for the acidification process that stirs sewage quickening sewage, and gas skirt is with the collecting methane that produces;
When the water level of (d) treating sewage arrived the position of upflow tube, the sewage of acidified processing just entered the UASB retort by upflow tube and is for further processing, and the sewage in the assurance equalizing tank remains fixing amount.
The concentration of the thickened sludge in the described equalizing tank is controlled at 2500～5000mg/L.
C:N:P=150～350:3 in the nutritive salt that adds in the described thickened sludge～10:1.
The time that described sewage stops in equalizing tank is 20～30 hours.
The velocity of rotation of described agitator is 25～40 rev/mins.
Beneficial effect
The present invention relates to a kind of pre-acidifying anaerobic UASB treatment unit and method of sewage, simple in structure, operating process is simple, existing equalizing tank is transformed, in the pond, raise and train the acidifying bacterium, to improve the biodegradability of waste water, water outlet access UASB retort, can improve the volumetric loading of UASB, anaerobism COD clearance that can Effective Raise 5%～10%.
Description of drawings
Fig. 1 is the structure principle chart of device of the present invention.
Embodiment
Below in conjunction with specific embodiment, further set forth the present invention.Should be understood that these embodiment only to be used for explanation the present invention and be not used in and limit the scope of the invention.Should be understood that in addition those skilled in the art can make various changes or modifications the present invention after the content of having read the present invention's instruction, these equivalent form of values fall within the application's appended claims limited range equally.
As shown in Figure 1, embodiments of the present invention relate to a kind of pre-acidifying anaerobic UASB treatment unit and method of sewage, its treatment unit comprises equalizing tank 2 and UASB retort 5, the left side of described equalizing tank 2 is connected with water inlet pipe 1, the bottom of described equalizing tank 2 is furnished with one deck thickened sludge 3, be injected with sewage by water inlet pipe 1 in the equalizing tank 2 of described thickened sludge 3 upsides, be symmetrically installed with agitator 21 on the two side, inside of described equalizing tank 2, the right side of described equalizing tank 2 is connected with UASB retort 5 by upflow tube 4, a gas skirt 22 is installed in the top of described equalizing tank 2, the area of described gas skirt 22 account for equalizing tank 2 the upper end open area 85%, contain the acidifying bacterium in the described thickened sludge 3.
Concrete operation step is as follows:
(a) a certain amount of thickened sludge 3 is tiled in the bottom of equalizing tank 2, then adds a certain amount of nutritive salt in thickened sludge 3, the concentration of thickened sludge 3 is controlled at 2500mg/L, the C:N:P=150:3:1 in the nutritive salt;
(b) the acidifying bacterium in the mud 3 to be concentrated is injected equalizing tank 2 by water inlet pipe 1 with sewage after raising and train and finishing;
(c) agitator 21 that starts both sides is for the acidification process that stirs sewage quickening sewage, and the velocity of rotation of agitator 21 is 25 rev/mins, and gas skirt 22 is with the collecting methane that produces;
When the water level of (d) treating sewage arrives the position of upflow tube 4, the sewage of acidified processing just enters UASB retort 5 by upflow tube 4 and is for further processing, guarantee that the sewage in the equalizing tank 2 remains fixing amount, the treatment time of sewage in equalizing tank 2 is 30 hours.
Claims (9)
1. the pre-acidifying anaerobic UASB treatment unit of a sewage, comprise equalizing tank (2) and UASB retort (5), it is characterized in that, the left side of described equalizing tank (2) is connected with water inlet pipe (1), the bottom of described equalizing tank (2) is furnished with one deck thickened sludge (3), be injected with sewage by water inlet pipe (1) in the equalizing tank (2) of described thickened sludge (3) upside, be symmetrically installed with agitator (21) on the two side, inside of described equalizing tank (2), the right side of described equalizing tank (2) is connected with UASB retort (5) by upflow tube (4).
2. the pre-acidifying anaerobic UASB treatment unit of a kind of sewage according to claim 1, it is characterized in that: a gas skirt (22) is installed in the top of described equalizing tank (2), the area of described gas skirt (22) account for equalizing tank (2) the upper end open area 80%～90%.
3. the pre-acidifying anaerobic UASB treatment unit of a kind of sewage according to claim 1, it is characterized in that: described thickened sludge contains the acidifying bacterium in (3).
4. the pre-acidifying anaerobic UASB treatment unit of a kind of sewage according to claim 1 is characterized in that: the top of described equalizing tank (2) is installed a gas skirt and is led to the biogas pipe network with pipeline.
5. a method of using the pre-acidifying anaerobic UASB treatment unit of a kind of sewage as claimed in claim 1 comprises the following steps:
(a) a certain amount of thickened sludge (3) is tiled in the bottom of equalizing tank (2), then in thickened sludge (3), adds a certain amount of nutritive salt;
(b) the acidifying bacterium in the mud to be concentrated (3) is injected equalizing tank (2) by water inlet pipe (1) with sewage after raising and train and finishing;
(c) agitator (21) that starts both sides is for the acidification process that stirs sewage quickening sewage, and gas skirt (22) is with the collecting methane that produces;
When the water level of (d) treating sewage arrived the position of upflow tube (4), the sewage of acidified processing just entered UASB retort (5) by upflow tube (4) and is for further processing, and the sewage in the assurance equalizing tank (2) remains fixing amount.
6. a kind of method of using the pre-acidifying anaerobic UASB treatment unit of sewage according to claim 5, it is characterized in that: the concentration of the thickened sludge (3) in the described equalizing tank (2) is controlled at 2500～5000mg/L.
7. a kind of method of using the pre-acidifying anaerobic UASB treatment unit of sewage according to claim 5 is characterized in that: the C:N:P=150～350:3 in the nutritive salt that adds in the described thickened sludge (3)～10:1.
8. a kind of method of using the pre-acidifying anaerobic UASB treatment unit of sewage according to claim 5, it is characterized in that: the time that described sewage stops in equalizing tank (2) is 20～30 hours.
9. a kind of method of using the pre-acidifying anaerobic UASB treatment unit of sewage according to claim 5, it is characterized in that: the velocity of rotation of described agitator (21) is 25～40 rev/mins.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013102422588A CN103351058A (en) | 2013-06-18 | 2013-06-18 | Pre-acidification anaerobic UASB treatment device and method for sewage |
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| CN2013102422588A CN103351058A (en) | 2013-06-18 | 2013-06-18 | Pre-acidification anaerobic UASB treatment device and method for sewage |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105836820A (en) * | 2016-06-01 | 2016-08-10 | 上海市城市建设设计研究总院 | Homogenizing tank with peak clipping function |
| CN105858877A (en) * | 2016-04-21 | 2016-08-17 | 浙江富春江环保热电股份有限公司 | UASB (Up-flow Anaerobic Sludge Blanket) reaction system for treating papermaking sludge filter pressing water |
| CN106809949A (en) * | 2016-05-24 | 2017-06-09 | 江山显进机电科技服务有限公司 | Sewage disposal is with just falling type UASB reaction systems |
| CN108928920A (en) * | 2018-06-07 | 2018-12-04 | 上海市政工程设计研究总院（集团）有限公司 | It is a kind of take into account pollution reduction, quenched and denitrification function comprehensive pool of regulating and storing |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1287540A (en) * | 1998-07-03 | 2001-03-14 | 迈克尔·克诺布洛赫 | Method and installation for treating waste water from oil seed and cereal processing |
| JP2006026536A (en) * | 2004-07-15 | 2006-02-02 | Sumitomo Heavy Ind Ltd | Methane fermentation method and methane fermentation device |
| CN201882975U (en) * | 2010-12-13 | 2011-06-29 | 山东绿泉环保工程有限公司 | High-efficiency anaerobic treatment device applied in treatment of waste water produced in paper making with commercial pulp |
| CN202881041U (en) * | 2012-01-10 | 2013-04-17 | 安徽佳明环保科技股份有限公司 | UASB-SASS (Upflow Anaerobic Sludge Blanket-Suspended Array Surveillance System) combination system for treating food wastewater |
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2013
- 2013-06-18 CN CN2013102422588A patent/CN103351058A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1287540A (en) * | 1998-07-03 | 2001-03-14 | 迈克尔·克诺布洛赫 | Method and installation for treating waste water from oil seed and cereal processing |
| JP2006026536A (en) * | 2004-07-15 | 2006-02-02 | Sumitomo Heavy Ind Ltd | Methane fermentation method and methane fermentation device |
| CN201882975U (en) * | 2010-12-13 | 2011-06-29 | 山东绿泉环保工程有限公司 | High-efficiency anaerobic treatment device applied in treatment of waste water produced in paper making with commercial pulp |
| CN202881041U (en) * | 2012-01-10 | 2013-04-17 | 安徽佳明环保科技股份有限公司 | UASB-SASS (Upflow Anaerobic Sludge Blanket-Suspended Array Surveillance System) combination system for treating food wastewater |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105858877A (en) * | 2016-04-21 | 2016-08-17 | 浙江富春江环保热电股份有限公司 | UASB (Up-flow Anaerobic Sludge Blanket) reaction system for treating papermaking sludge filter pressing water |
| CN106809949A (en) * | 2016-05-24 | 2017-06-09 | 江山显进机电科技服务有限公司 | Sewage disposal is with just falling type UASB reaction systems |
| CN105836820A (en) * | 2016-06-01 | 2016-08-10 | 上海市城市建设设计研究总院 | Homogenizing tank with peak clipping function |
| CN108928920A (en) * | 2018-06-07 | 2018-12-04 | 上海市政工程设计研究总院（集团）有限公司 | It is a kind of take into account pollution reduction, quenched and denitrification function comprehensive pool of regulating and storing |
| CN108928920B (en) * | 2018-06-07 | 2021-10-01 | 上海市政工程设计研究总院（集团）有限公司 | Comprehensive pool with pollutant emission reduction, regulation and tempering and denitrification functions |
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Application publication date: 20131016 |