CN102583936B - Air lift type internal-external double circulation ozone sludge contact reaction device - Google Patents
Air lift type internal-external double circulation ozone sludge contact reaction device Download PDFInfo
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- CN102583936B CN102583936B CN 201210023277 CN201210023277A CN102583936B CN 102583936 B CN102583936 B CN 102583936B CN 201210023277 CN201210023277 CN 201210023277 CN 201210023277 A CN201210023277 A CN 201210023277A CN 102583936 B CN102583936 B CN 102583936B
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- ozone
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- flow apron
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Abstract
The invention provides an air lift type internal-external double circulation ozone sludge contact reaction device which comprises a body, wherein an internal cavity of the body comprises a first reaction area and a second reaction area which are cut-through up and down; a liquid inlet pipe mounted at the top of the body is communicated with the first reaction area; flow guide baffle plates with micropores are transversely mounted in the first reaction area and positioned below the liquid inlet pipe; a microporous aeration disc arranged at the bottom of the second reaction area is connected with an ozone generator through a pipeline; an outer circulation pipe is mounted at the bottom of the body; one end of the outer circulation pipe is communicated with the second reaction area, and the other end of the outer circulation pipe is communicated with the first reaction area and positioned above the flow guide baffle plates; a reflux pump for providing reflux power is arranged on a pipeline of the outer circulation pipe; and the first reaction area is further connected with an air exhaust pipe. By adopting the flow guide baffle plate and an internal reflux and outer circulation manner, the air lift type internal-external double circulation ozone sludge contact reaction device has the advantages that the utilization rate of ozone is increased, the operation cost for quantitative reduction of the ozone sludge is lowered and the treatment cost of subsequent sludge is decreased.
Description
Technical field
The present invention relates to sludge treatment equipment, the inside and outside two circulation ozone mud contact reacts devices of especially a kind of air lift type.
Background technology
Along with Urbanization in China is accelerated with economical growing, treatment rate of domestic sewage improves year by year, and the sludge yield of municipal water treatment plant also sharply increases.According to incompletely statistics, quantity discharged reaches 13.4 * 10 China's sewage day
5Ten thousand t, about 0.5% ~ 1.0% sewage is converted into solid matter and agglomerate and sink formation mud after treatment.The complicated component of mud is by a variety of microorganisms combine the bacterium colloid that forms and the multiple organism of its absorption, the polymer that inorganics is formed.
Contain a large amount of organism in the excess sludge of Sewage Plant, undressed mud brings secondary pollution after entering environment, and ecotope and mankind's activity have been constituted serious threat.It is the integral part of sewage work that the processing of mud is disposed always, and its expense can account for more than 50% of entire sewage treatment plant working cost.Sludge decrement process research is in recent years risen day by day, and wherein ozone oxidation breaking sludge decrement earns widespread respect to crack rapidly, to crack the efficient height.The ozone breaking sludge carries out in ozone sludge disintegration device, the reaction efficiency of ozone greatly depends on the structure of ozone sludge disintegration device and the operational condition of system, under heteroid ozone sludge disintegration device and different operational condition, the mass-transfer efficiency of ozone differs greatly, and mass-transfer efficiency affects the utilization ratio of ozone to a great extent.The ozone utilization rate of existing ozone sludge disintegration device is low, causes sludge disintegration efficient low, sludge treatment cost height.
Summary of the invention
Technical problem to be solved by this invention is, low at existing ozone sludge disintegration device ozone utilization rate, sludge treatment cost problem of higher, provide a kind of ozone utilization rate height, mud oxidation disintegration effect good, the inside and outside two circulation ozone mud contact reacts devices of the air lift type that the sludge treatment expense is low.
In order to solve the problems of the technologies described above, the invention provides the inside and outside two circulation ozone mud contact reacts devices of a kind of air lift type, comprise body, it is characterized in that, the internal cavity of described body is by last, first reaction zone of following perforation, second reaction zone is formed, the top of described body is equipped with liquid-inlet pipe, this liquid-inlet pipe communicates with described first reaction zone, horizontal installation has the flow apron of aperture in this first reaction zone, this flow apron is positioned at the below of described liquid-inlet pipe, the bottom of described second reaction zone is provided with the micro-pore aeration dish, this micro-pore aeration dish is connected with the ozonizer of peripheral hardware by pipeline, the bottom of described body is equipped with outer circulating tube, this outer circulating tube one end is communicated with described second reaction zone, the other end and described first reaction zone are communicated with and are positioned at the top of described flow apron, and the pipeline of described outer circulating tube is provided with the reflux pump that backflow power is provided, and described first reaction zone also is connected with vapor pipe.
The quantity of described flow apron is 5～6 groups, this flow apron comprises dull and stereotyped and funnel-form baffle plate, and dull and stereotyped and funnel-form baffle plate alternately arranges at above-below direction, the funnel-form incorgruous setting in bottom of this two adjacent funnel-form baffle plate, aperture between adjacent flow apron staggers mutually in vertical direction, the percentage of open area of flow apron is 20～30%, and aperture is circular hole, and its aperture is 1mm～10mm.
The reactor inner core of vertical setting and up/down perforation is installed in described second reaction zone, and described micro-pore aeration dish is positioned at the bottom of this reactor inner core, and uniform aperture is circular hole on this micro-pore aeration dish, and its aperture is 10 μ m～30 μ m.
The bottom of described body is equipped with the emptying valve.
Positively effect of the present invention is: adopt flow apron and internal reflux outer circulation, improved the utilization ratio of ozone, reduce running cost in the ozone sludge reduction, reduced the processing costs of follow-up mud, be convenient to promote the use of.
Description of drawings
Fig. 1 structural representation of the present invention.
Embodiment
Below in conjunction with specific embodiment the present invention is described in further detail.
As shown in Figure 1, the inside and outside two circulation ozone mud contact reacts devices of a kind of air lift type, comprise columnar body 1, the internal cavity of described body 1 is by last, first reaction zone 12 of following perforation, second reaction zone 13 is formed, also comprise the Y-tube that is installed in body 1 top, the drain pipe of this Y-tube communicates with first reaction zone 12, first liquid-inlet pipe of this Y-tube is connected with the mud liquid-inlet pipe by first regulated valve 101, the flow apron 5 that is positioned at first reaction zone 12 is installed in the drain pipe bottom of Y-tube, flow apron 5 comprises two flat boards and three funnel-form baffle plates, funnel-form all incorgruous settings of bottom of adjacent two funnel-form baffle plates, flat board is arranged in the middle of the funnel-form baffle plate of two groups of incorgruous layouts, have the circular aperture of some irregular distributions at flow apron 5, circular hole between adjacent flow apron staggers up and down in vertical direction, the percentage of open area of flow apron 5 is 20～30%, and the aperture of circular hole is 1mm～10mm.
The reactor inner core of vertical setting and up/down perforation is installed in second reaction zone 13, in the bottom of this reactor inner core 7 micro-pore aeration dish 2 is installed, the aperture of uniform aperture is 10 μ m～30 μ m on this micro-pore aeration dish 2.Micro-pore aeration dish 2 is connected with the ozonizer 3 of peripheral hardware by pipeline.The bottom of body 1 is connected with an end of outer circulating tube 6 by the 3rd regulated valve 103, the other end of this outer circulating tube 6 is connected with second liquid-inlet pipe of Y-tube by second regulated valve 102, the pipeline of outer circulating tube 6 is provided with reflux pump 4, the first reaction zones 12 that backflow power is provided and also is connected with vapor pipe 8.
In the bottom of body 1 emptying valve 11 is installed.
Principle of work:
Open first regulated valve 101, close the 3rd regulated valve 103, mud is introduced the internal cavity of body, mud mixed liquid falls under gravity in second reaction zone 13, and the liquid level of control mud mixed liquid is no more than second reaction zone 13.Close first regulated valve 101 this moment, opens second regulated valve 102 and the 3rd regulated valve 103, starts ozonizer 3 and carry out aeration, starts reflux pump 4 simultaneously.Ozone bubbles is overflowed from micro-pore aeration dish 2, at first with reactor inner core 7 mud hybrid reactions, because the ozone bubbles number is numerous, in reactor inner core 7, fully mix with mud and continuous come-up, simultaneously under the ozone dynamic action of aeration, mud mixed liquid is in the state of circulating outside reactor inner core 7 and reactor inner tube wall, the mud mixed liquid of second reactor bottom is under reflux pump 4 effects simultaneously, be back to the top of first reactor by outer circulating tube 6, and drop on described flow apron 5, and along level or funnelform baffle plate baffling, flow down layer by layer, fully contact further reaction with the ozone of effusion mud mixed liquid again in the process that flows down.The mud mixed liquid that refluxes will fall into second reaction zone 13 at last, carries out the abundant contact reacts of aeration and ozone again, so circulation.Reacted tail gas enters atmosphere after entering ozone absorbent solution by vapor pipe 8.
Closeall regulated valve after reacting completely is closed ozonizer 3 and reflux pump 4 simultaneously.Open emptying valve 11, the mud after cracking is discharged from emptying valve 11.
Analyze the effect of this device by following embodiment in conjunction with testing data;
Under step operation operational conditions, mud can be thought the contact reacts time of mud and ozone in the residence time of reactor.Be 4500 ~ 6000mg/L in sludge concentration, the ozone inlet gas concentration is 25mg/L ~ 30mg/L, when air input is 0.6 L/min ~ 1.4 L/min, ozone tail gas concentration is respectively about 5.21 mg/L and 5.09mg/L at 10min and 30min, ozone utilization rate is 84.4% and 84.8%, sludge disintegration rate behind the 10min is more than 75%, and sludge disintegration is complete behind the 30min.
This shows, the utilization ratio height of the inside and outside two circulation ozone mud contact reacts device ozone of air lift type of the present invention, sludge yield is little, mud oxidation disintegration effect is good, thereby reduced the processing costs of follow-up mud, this device also is easy to existing sewage work is transformed, and increases this device and just can realize mud decrement in mud refluxes.
The above embodiment of the present invention only is to be explanation example of the present invention, and is not to be restriction to embodiments of the present invention.For those of ordinary skill in the field, can also make other multi-form variation and changes on the basis of the above description.Here can't give exhaustive to all embodiments.Everyly belong to the row that apparent variation that technical scheme of the present invention amplifies out or change still are in protection scope of the present invention.
Claims (2)
1. inside and outside two circulation ozone mud contact reacts devices of an air lift type, comprise body (1), it is characterized in that, the internal cavity of described body (1) is by last, first reaction zone (12) of following perforation, second reaction zone (13) is formed, the top of described body (1) is equipped with liquid-inlet pipe, this liquid-inlet pipe communicates with described first reaction zone (12), horizontal installation has the flow apron (5) of aperture in this first reaction zone (12), this flow apron (5) is positioned at the below of described liquid-inlet pipe, the bottom of described second reaction zone (13) is provided with micro-pore aeration dish (2), this micro-pore aeration dish (2) is connected with the ozonizer (3) of peripheral hardware by pipeline, the bottom of described body (1) is equipped with outer circulating tube (6), these outer circulating tube (6) one ends are communicated with described second reaction zone (13), the other end and described first reaction zone (12) are communicated with and are positioned at the top of described flow apron (5), the pipeline of described outer circulating tube (6) is provided with the reflux pump (4) that backflow power is provided, and described first reaction zone (12) also is connected with vapor pipe (8);
The quantity of described flow apron (5) is 5～6 groups, this flow apron (5) comprises dull and stereotyped and funnel-form baffle plate, and dull and stereotyped and funnel-form baffle plate alternately arranges at above-below direction, funnel-form all incorgruous settings of bottom of adjacent two funnel-form baffle plates, aperture between adjacent flow apron staggers mutually in vertical direction, the percentage of open area of flow apron (5) is 20～30%, and aperture is circular hole, and its aperture is 1mm～10mm;
The reactor inner core (7) of vertical setting and up/down perforation is installed in described second reaction zone (13), described micro-pore aeration dish (2) is positioned at the bottom of this reactor inner core (7), it is circular hole that this micro-pore aeration dish (2) is gone up uniform aperture, and its aperture is 10 μ m～30 μ m.
2. the inside and outside two circulation ozone mud contact reacts devices of air lift type according to claim 1 is characterized in that the bottom of described body (1) is equipped with emptying valve (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210023277 CN102583936B (en) | 2012-02-02 | 2012-02-02 | Air lift type internal-external double circulation ozone sludge contact reaction device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210023277 CN102583936B (en) | 2012-02-02 | 2012-02-02 | Air lift type internal-external double circulation ozone sludge contact reaction device |
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| Publication Number | Publication Date |
|---|---|
| CN102583936A CN102583936A (en) | 2012-07-18 |
| CN102583936B true CN102583936B (en) | 2013-08-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201210023277 Expired - Fee Related CN102583936B (en) | 2012-02-02 | 2012-02-02 | Air lift type internal-external double circulation ozone sludge contact reaction device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103253830B (en) * | 2013-05-30 | 2015-09-30 | 浙江海洋学院 | Biological pollution control method for industrial aquaculture wastewater |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101708937A (en) * | 2009-11-27 | 2010-05-19 | 南京工业大学 | Method for promoting sludge reduction by ozone |
| CN202415338U (en) * | 2012-02-02 | 2012-09-05 | 重庆大学 | Ozone-sludge contacting reactor |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06154796A (en) * | 1992-11-26 | 1994-06-03 | Meidensha Corp | Method and equipment for sludge treatment |
| JPH08132099A (en) * | 1994-11-11 | 1996-05-28 | Kurita Water Ind Ltd | Device for ozonating biological sludge |
| JP3731806B2 (en) * | 2001-05-18 | 2006-01-05 | 株式会社荏原製作所 | Organic wastewater treatment method and apparatus |
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2012
- 2012-02-02 CN CN 201210023277 patent/CN102583936B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101708937A (en) * | 2009-11-27 | 2010-05-19 | 南京工业大学 | Method for promoting sludge reduction by ozone |
| CN202415338U (en) * | 2012-02-02 | 2012-09-05 | 重庆大学 | Ozone-sludge contacting reactor |
Non-Patent Citations (3)
| Title |
|---|
| JP特开2002-336890A 2002.11.26 |
| JP特开平6-154796A 1994.06.03 |
| JP特开平8-132099A 1996.05.28 |
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| CN102583936A (en) | 2012-07-18 |
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