CN103011501A - High efficiency treatment method for leather industry sewage - Google Patents
High efficiency treatment method for leather industry sewage Download PDFInfo
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- CN103011501A CN103011501A CN2012105210295A CN201210521029A CN103011501A CN 103011501 A CN103011501 A CN 103011501A CN 2012105210295 A CN2012105210295 A CN 2012105210295A CN 201210521029 A CN201210521029 A CN 201210521029A CN 103011501 A CN103011501 A CN 103011501A
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- sewage
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- membrane module
- microbiological deterioration
- industry sewage
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- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The invention discloses a high efficiency treatment method for leather industry sewage. The method comprises the following successive steps: treatment of the sewage with a grating, deposition, air floatation, treatment in a microbial degradation tank, chlorination, ultra violet radiation and ozone disinfection. The concentration of activated sludge in the microbial degradation tank is in a range of 8000 to 10000 mg/L, and hydraulic retention time is designed to be 20 to 25 h; the cultured activated sludge is added into the microbial degradation tank, and a bamboo charcoal fiber membrane module is installed in the microbial degradation tank; after filtration by the membrane module, effluent is sucked out by a submersible pump. According to the invention, since the bamboo charcoal fiber membrane module is used to replace a secondary sedimentation tank in a conventional process, a land area occupied by a treating system is reduced; the problem of sludge bulking in a traditional process of floating of activated sludge is overcome, and the water quality of effluent is stable and reliable; and the treatment method in the invention is easy and convenient to operate.
Description
Technical field
The invention belongs to sewage treatment area, specifically a kind for the treatment of process of efficient tanning industry sewage.
Background technology
Leather production will be passed through the physical and chemical process of the Various Complexes such as immersion, liming depilation, deliming, pickling, boots system, neutralization, stuffing, dyeing, used a large amount of chemical materialss, such as acid, alkali, salt, sodium sulphite, lime, tensio-active agent, the agent of chromium boots, fatting agent, dyestuff, organic additive etc., except a part is absorbed, enters waste water greatly and pollute.The principal feature of leather-making industrial wastewater is: 1. more, the suspended solids thing (55) of the process hides foreign material in the waste water and fat content are more; 2. wastewater organic pollutant concentration is high, and biochemical is poor.(3) contain heavy metal contaminants, the content of ammonia nitrogen is also higher, and discharging is serious to water pollution arbitrarily.
Summary of the invention
Deficiency for the prior art existence, the invention provides a kind for the treatment of process of efficient tanning industry sewage, the technical scheme of the method is: behind the processing of waste water grid, precipitation, air supporting, microbiological deterioration pond, chlorination, uv-radiation, carry out again ozonization, describedly state activated sludge concentration in the microbiological deterioration pond between 8000--10000mg/L, the design hydraulic detention time is 20--25h, described microbiological deterioration is added with cultured active sludge in the pond, and the bamboo-carbon fibre membrane module is installed; After described membrane module filters, by submersible pump suction water outlet.
Application method of the present invention is: a kind for the treatment of process of efficient tanning industry sewage, its treatment step: a, tanning industry sewage is sent into grating tank, and the foreign material in the waste water are filtered; B, step a gained sewage is injected settling tank, sewage in the pond is carried out separating treatment; C, step b gained sewage is injected air flotation pool, remove suspended solids thing and material after scraping slag by air supporting; D, gained sewage among the step c is injected the microbiological deterioration pond, regulating the pH value is 7-8, adds flocculation agent in described microbiological deterioration pond, makes sewage form active sludge in described microbiological deterioration pond; E, steps d gained sewage is injected settling tank, carry out mud-water separation; F, with step e gained supernatant liquor input chlorination house, the pH value of adjusting sewage is 6.0-7.0 most; G, step f gained sewage is carried out uv-radiation, sewage is carried out sterilization; Hydraulic detention time is 20-25 hour; H, with step g gained sewage injection of ozone sterilization pool, in described ozonization, carry out aeration, hydraulic detention time was at 5-10 hour; I, with step h gained water outlet input microbiological deterioration pond, described microbiological deterioration is added with cultured active sludge in the pond, and the bamboo-carbon fibre membrane module is installed; After described membrane module filters, by the submersible pump suction, water outlet, the activated sludge concentration in the described microbiological deterioration pond is between 8000-10000mg/L, and the design hydraulic detention time is 20-25h.
Advantageous characteristic of the present invention is: the present invention reduces the treatment system floor space by adopting the second pond in the bamboo-carbon fibre membrane module replacement traditional technology; Also solved simultaneously the sludge bulking problem that traditional suspension activated sludge process exists, stable effluent quality is reliable; Operating process is relative simple also.
Embodiment
Example 1: tanning industry sewage is sent into grating tank, the foreign material in the sewage are filtered; The sewage that filters is injected settling tank, sewage in the pond is carried out separating treatment, step b gained sewage is injected air flotation pool, scrape by air supporting and to remove suspended solids thing and material behind the slag, gained sewage among the step c is injected the microbiological deterioration pond, regulating the pH value is 7, adds flocculation agent in described microbiological deterioration pond, makes sewage form active sludge in described microbiological deterioration pond; Then carry out mud and separate, supernatant liquor is inputted chlorination house, the pH value of adjusting sewage most 6.0 is carried out uv-radiation with gained sewage, and sewage is carried out sterilization; Hydraulic detention time is 20 hours; Gained sewage injection of ozone sterilization pool carries out aeration in described ozonization pond, hydraulic detention time was at 5 hours; With gained water outlet input microbiological deterioration pond, described microbiological deterioration is added with cultured active sludge in the pond, and the bamboo-carbon fibre membrane module is installed; After described membrane module filters, by submersible pump suction, water outlet.
Example 2: tanning industry sewage is sent into grating tank, the foreign material in the sewage are filtered; The sewage that filters is injected settling tank, sewage in the pond is carried out separating treatment, step b gained sewage is injected air flotation pool, scrape by air supporting and to remove suspended solids thing and material behind the slag, gained sewage among the step c is injected the microbiological deterioration pond, regulating the pH value is 7.5, adds flocculation agent in described microbiological deterioration pond, makes sewage form active sludge in described microbiological deterioration pond; Then carry out mud and separate, supernatant liquor is inputted chlorination house, the pH value of adjusting sewage most 6.5 is carried out uv-radiation with gained sewage, and sewage is carried out sterilization; Hydraulic detention time is 23 hours; Gained sewage injection of ozone sterilization pool carries out aeration in described ozonization pond, hydraulic detention time was at 7 hours; With gained water outlet input microbiological deterioration pond, described microbiological deterioration is added with cultured active sludge in the pond, and the bamboo-carbon fibre membrane module is installed; After described membrane module filters, by submersible pump suction, water outlet.
Example 3: tanning industry sewage is sent into grating tank, the foreign material in the sewage are filtered; The sewage that filters is injected settling tank, sewage in the pond is carried out separating treatment, step b gained sewage is injected air flotation pool, scrape by air supporting and to remove suspended solids thing and material behind the slag, gained sewage among the step c is injected the microbiological deterioration pond, regulating the pH value is 8, adds flocculation agent in described microbiological deterioration pond, makes sewage form active sludge in described microbiological deterioration pond; Then carry out mud and separate, supernatant liquor is inputted chlorination house, the pH value of adjusting sewage most 7.0 is carried out uv-radiation with gained sewage, and sewage is carried out sterilization; Hydraulic detention time is 25 hours; Gained sewage injection of ozone sterilization pool carries out aeration in described ozonization pond, hydraulic detention time was at 10 hours; With gained water outlet input microbiological deterioration pond, described microbiological deterioration is added with cultured active sludge in the pond, and the bamboo-carbon fibre membrane module is installed; After described membrane module filters, by submersible pump suction, water outlet.
Claims (3)
1. the treatment process of an efficient tanning industry sewage, it is characterized in that: after the treatment process of described efficient tanning industry sewage comprises the following steps: the processing of sewage grid, precipitation, air supporting, microbiological deterioration pond, chlorination, uv-radiation successively, carry out again ozonization.
2. the treatment process of a kind of efficient tanning industry sewage according to claim 1, it is characterized in that: the activated sludge concentration in the described microbiological deterioration pond is between 8000--10000mg/L, and the design hydraulic detention time is 20--25h.
3. the treatment process of a kind of efficient tanning industry sewage according to claim 2, it is characterized in that: described microbiological deterioration is added with cultured active sludge in the pond, and the bamboo-carbon fibre membrane module is installed; After described membrane module filters, by submersible pump suction water outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105210295A CN103011501A (en) | 2012-11-27 | 2012-11-27 | High efficiency treatment method for leather industry sewage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105210295A CN103011501A (en) | 2012-11-27 | 2012-11-27 | High efficiency treatment method for leather industry sewage |
Publications (1)
| Publication Number | Publication Date |
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| CN103011501A true CN103011501A (en) | 2013-04-03 |
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| CN2012105210295A Pending CN103011501A (en) | 2012-11-27 | 2012-11-27 | High efficiency treatment method for leather industry sewage |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1245147A (en) * | 1998-08-19 | 2000-02-23 | 株式会社太白环境 | Photocatalytic reaction system for treating waste water |
| JP2004314020A (en) * | 2003-04-21 | 2004-11-11 | Hitachi Plant Eng & Constr Co Ltd | Membrane treatment system for separating virus |
| CN101565219A (en) * | 2008-04-25 | 2009-10-28 | 北京化工大学 | Process for photocatalytic treatment of industrial waste water |
| CN101830595A (en) * | 2009-03-11 | 2010-09-15 | 深圳市金达莱环保股份有限公司 | Method for treating leather-making industrial wastewater |
| CN101979344A (en) * | 2010-10-28 | 2011-02-23 | 波鹰(厦门)科技有限公司 | Nano catalytic electrolysis technology and membrane technology-based leather wastewater treatment and recycling method |
-
2012
- 2012-11-27 CN CN2012105210295A patent/CN103011501A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1245147A (en) * | 1998-08-19 | 2000-02-23 | 株式会社太白环境 | Photocatalytic reaction system for treating waste water |
| JP2004314020A (en) * | 2003-04-21 | 2004-11-11 | Hitachi Plant Eng & Constr Co Ltd | Membrane treatment system for separating virus |
| CN101565219A (en) * | 2008-04-25 | 2009-10-28 | 北京化工大学 | Process for photocatalytic treatment of industrial waste water |
| CN101830595A (en) * | 2009-03-11 | 2010-09-15 | 深圳市金达莱环保股份有限公司 | Method for treating leather-making industrial wastewater |
| CN101979344A (en) * | 2010-10-28 | 2011-02-23 | 波鹰(厦门)科技有限公司 | Nano catalytic electrolysis technology and membrane technology-based leather wastewater treatment and recycling method |
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Application publication date: 20130403 |