CN1061201A - The method that a kind of synthetic leather wastewater is handled - Google Patents
The method that a kind of synthetic leather wastewater is handled Download PDFInfo
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- CN1061201A CN1061201A CN91105917A CN91105917A CN1061201A CN 1061201 A CN1061201 A CN 1061201A CN 91105917 A CN91105917 A CN 91105917A CN 91105917 A CN91105917 A CN 91105917A CN 1061201 A CN1061201 A CN 1061201A
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- synthetic leather
- aeration
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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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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- Activated Sludge Processes (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The method that a kind of synthetic leather wastewater is handled, be that synthetic leather wastewater is transferred to the pH value about 9 with acid solution, by air supporting---the pneumatically supported continuous processing technique of two sections jet-flow aerations---precipitation---, make wastewater treatment after every index all reach discharging standards.Present method application apparatus is simple, easy to operate, throw in that dose is few, aeration time short, noise-less pollution thereby investment and working cost are low, is applicable to that the synthetic leather wastewater of pigskin, ox-hide, sheepskin etc. is handled.
Description
The present invention relates to a kind of treatment technology of high concentrated organic wastewater, a kind of method that is applicable to that synthetic leather wastewaters such as pigskin, ox-hide, sheepskin are handled particularly is provided, belong to environmental protection technical field.
As everyone knows, synthetic leather wastewater is handled and is listed in one of brainstorm project of national China National Light Industrial Products Department.In the report and running example that synthetic leather wastewater is handled, chemical coagulation-sedimentation method no matter, the air supporting method, bio-disc system, the biological filtering tower combined working method, oxidation ditch process or blast aeration activated sludge process, or domestic certain famous tannery, its synthetic leather wastewater be with high-order gravity flow aeration-advection drown oneself-electrolysis-air supporting-uv disinfection-Sha filters and technology such as handles, it is big all to exist the dosing coagulant amount in various degree, aeration time is long, big and the investment of current consumption, floor space, the shortcoming that working cost is high, or because of in active sludge treatment, causing sludge bulking to cause the treatment effect of leather-making waste water undesirable easily.
The objective of the invention is to explore the difficult problem that synthetic leather wastewater is handled; propose with " choosing of tanning industry translation " of light industry press wait external relevant pollution in leather industry control and waste utilization document and domestic new publication by Beijing Environmental Protection Science Research Inst.'s volume " the different treatment technology that water prevention and cure of pollution handbook one book is contained, with satisfy reduced investment, occupation of land less, universal demand that working cost is low.Compared with prior art improve the effect of administering simultaneously again.Synthetic leather wastewater after present method is handled, reach fully and be better than discharging standards.
Task of the present invention is finished with following method and flow process: synthetic leather wastewater transfers to pH value about 9 with acid solution earlier, carrying out one-level air supporting handles, after removing suspended substance, scurf and the fat of waste water, enter 1,2 section jet-flow aeration pond and carry out the aerobic biochemical processing, under the effect of microorganism and oxygen, make in the waste water organism obtain decomposing, in settling tank, precipitate then, make and contain microbic activity mud and separate with waste water, supernatant liquor flows into secondary air-floatation and handles, and reaches the industrial wastewater discharge standard of country after treatment.
In the production control process, adding coagulating agent aluminium chlorohydroxide (aluminum content 10%) during one-level air supporting only needs 50～80PPM; And two jet-flow aeration time is controlled at 10～12 hours (adopting water pump and jet aerator); When secondary air-floatation is handled, look settling tank supernatant liquor situation, can throw in coagulating agent or only drop into the aluminium chlorohydroxide (aluminum content 10%) of 20～40PPM.
The invention has the advantages that: technical process is fairly simple, equipment configuration compact, rationally, handled easily and throw in coagulating agent for adding 1/10～1/8 of dose usually, aeration time weak point, power saving, event gross investment and lower, the no sludge bulking disadvantage of working cost and avoid sound pollution.
Below in conjunction with accompanying drawing the present invention is described in further detail;
Accompanying drawing is the process flow sheet of present method.
A kind of synthetic leather wastewater, when its pollution concentration be:
PH：9～13
COD
cr≤3000mg/l
BOD
5≤1500mg/l
SS≤2000mg/l
S
-≤25mg/l
The synthetic leather wastewater of above-mentioned concentration range, inject acid solution through acid solution case (17) earlier, waste water is transferred to after PH is about 9, flow into one-level air flotation pool (1), and add by coagulation medicine-chest (15) and next coagulating agent and the flocculation agent of flocculation medicine-chest (16), discharge under the dissolved air water effect at 1 section dissolved air water reliever (2), handle through air supporting, flow into 1 section jet-flow aeration pond (3), under the aeration of jet water pump (13) and jet aerator (14), waste water carries out aerobic biochemical to be handled, and flows into 2 sections jet-flow aeration ponds (4) again, proceeds aerobic biochemical equally and handle under jet water pump (12) jet aerator (11) aeration.Waste water flows into settling tank (5) and precipitates after aerobic biochemical is handled, the active sludge that avales arrives sludge sump (5) through sludge pump (10) partial reflux to 1,2 sections jet-flow aeration ponds (3,4), part, supernatant liquor then flow to secondary air-floatation pond (6), add the coagulating agent that come by one-level coagulation medicine-chest (15) and one-level flocculation medicine-chest (16) and flocculation agent, under the dissolved air water effect that 2 sections air supporting dissolved air water relievers (7) discharge, will contain that small suspended substance is removed, waste water can reach national discharge index and discharge.(when secondary air-floatation was handled, the situation of looking settling tank (5) supernatant liquor can add coagulating agent and flocculation agent from two-stage coagulation medicine-chest (8) and secondary flocculation medicine-chest (9) in case of necessity).
Embodiment:
The synthetic leather wastewater water yield of certain tannery is 1070 ton per days, after the technical process of adopting present method to propose is recently handled, stable always, water outlet is limpid, wherein have through the city-level environmental monitoring station and carry out two days supervisory monitoring and checked and accepted mensuration in continuous three days, all index is better than national discharge index, and its raw water quality and processing back water quality are as follows:
| Raw water quality | Handle back water | GB | |
| PH | |||
| 7～13 | 6～8 | 6～9 | |
| COD CR | 2268.0mg/l | 187.7mg/l | 300mg/l |
| BOD 5 | 1560.0mg/l | 55.0mg/l | 150mg/l |
| SS | 934.0mg/l | 36.0mg/l | 200mg/l |
| S － | 48.0mg/l | 0.025mg/l | 1mg/l |
| Total chromium | 10.32mg/l | Do not detect | 1.5mg/l |
Operation is handled and is consumed index:
1, power consumption 1.2KWh/ ton waste water
2, aluminium chlorohydroxide (aluminum content 10%) 80 gram/ton waste water
3, polyacrylamide (commercially available liquid, glue) 3 gram/ton waste water
Claims (4)
1, a kind of method of synthetic leather wastewater processing.It is characterized in that:
A, waste water are adjusted to PH and about 9 enter one-level air supporting;
B, after scurf, suspended substance and fat are removed in one-level air supporting, enter 1,2 section jet-flow aeration pond and carry out aerobic biochemical and handle;
Organism obtains decomposing under the effect of microorganism and oxygen in C, the waste water, sends into settling tank again and precipitates; Its sedimentary active sludge partly is back to aeration tank, part to sludge sump.
D, settling tank supernatant liquor flow into secondary air-floatation and handle the back qualified discharge.
2, method according to claim 1, adding coagulating agent aluminium chlorohydroxide (aluminum content 10%) when it is characterized in that one-level air supporting only needs 50～80PPm.
3, method according to claim 1 is characterized in that adopting the jet-flow aeration of two sections of branches, and aeration time was controlled at 10～12 hours, and the equipment of aeration is water pump and jet aerator.
4, method according to claim 1 is characterized in that secondary air-floatation need not throw in coagulating agent or only drop into the aluminium chlorohydroxide (aluminum content 10%) of 20～40PPm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN91105917A CN1044999C (en) | 1991-08-23 | 1991-08-23 | Comprehensive processing method of tannery waste water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN91105917A CN1044999C (en) | 1991-08-23 | 1991-08-23 | Comprehensive processing method of tannery waste water |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1061201A true CN1061201A (en) | 1992-05-20 |
| CN1044999C CN1044999C (en) | 1999-09-08 |
Family
ID=4907405
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN91105917A Expired - Fee Related CN1044999C (en) | 1991-08-23 | 1991-08-23 | Comprehensive processing method of tannery waste water |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1044999C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1049409C (en) * | 1994-08-04 | 2000-02-16 | 卢喜林 | Synchronous intensified jet method of biological dephenolized mud mixed nutrient sewage |
| CN100371258C (en) * | 2006-01-22 | 2008-02-27 | 徐浩昌 | Industrial waste water treatment method |
| 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 |
| CN102010107A (en) * | 2010-12-24 | 2011-04-13 | 波鹰(厦门)科技有限公司 | Treatment and cyclic utilization device and method of tannery wastewater |
| WO2012055263A1 (en) * | 2010-10-28 | 2012-05-03 | 波鹰(厦门)科技有限公司 | Apparatus and method for treating and recycling tannery wastewater based on nano catalytic electrolysis technology and membrane technology |
-
1991
- 1991-08-23 CN CN91105917A patent/CN1044999C/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1049409C (en) * | 1994-08-04 | 2000-02-16 | 卢喜林 | Synchronous intensified jet method of biological dephenolized mud mixed nutrient sewage |
| CN100371258C (en) * | 2006-01-22 | 2008-02-27 | 徐浩昌 | Industrial waste water treatment method |
| 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 |
| CN101830595B (en) * | 2009-03-11 | 2013-06-26 | 江西金达莱环保股份有限公司 | Method for treating leather-making industrial wastewater |
| WO2012055263A1 (en) * | 2010-10-28 | 2012-05-03 | 波鹰(厦门)科技有限公司 | Apparatus and method for treating and recycling tannery wastewater based on nano catalytic electrolysis technology and membrane technology |
| CN102010107A (en) * | 2010-12-24 | 2011-04-13 | 波鹰(厦门)科技有限公司 | Treatment and cyclic utilization device and method of tannery wastewater |
| CN102010107B (en) * | 2010-12-24 | 2011-12-28 | 波鹰(厦门)科技有限公司 | Treatment and cyclic utilization device and method of tannery wastewater |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1044999C (en) | 1999-09-08 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
| OR01 | Other related matters | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |