CN102503039A - Nuisanceless leather wastewater treatment method - Google Patents
Nuisanceless leather wastewater treatment method Download PDFInfo
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- CN102503039A CN102503039A CN2011103600719A CN201110360071A CN102503039A CN 102503039 A CN102503039 A CN 102503039A CN 2011103600719 A CN2011103600719 A CN 2011103600719A CN 201110360071 A CN201110360071 A CN 201110360071A CN 102503039 A CN102503039 A CN 102503039A
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Abstract
A nuisanceless leather wastewater treatment method relates to the technical field of sewage treatment, and is characterized by comprising the following steps: firstly, desulfurizing primarily and filtering sulfide wastewater and comprehensive wastewater, and entering a regulating pre-aerating tank; sedimentating the wastewater in a primary sedimentating tank, and removing part of sludge; entering a floating tank, and chemically treating the rest wastewater; aerating for two times from a facultative tank to an aerating and oxygenizing tank, entering a secondary sedimentating tank, and flowing supernatant into a water circulating pipeline; entering a sludge concentrating tank, and filtering the sludge into blocks by a plate-and-frame filter press; and collecting and treating the sludge in a centralized way. By the nuisanceless leather wastewater treatment method, the sulfide wastewater and other comprehensive wastewater generated in the leather production can be purified, so that the content of impurities in the sewage can be greatly reduced, the influence of the sewage on a subsequent production system is reduced, and the treated water is guaranteed to reach the reuse standard.
Description
Technical field
The present invention relates to technical field of sewage, be specifically related to a kind of leather waste water non-pollution processing method.
Background technology
Leather is through physics, the not perishable animal skin of the resulting sex change of chemical process such as depilation and tannings.Leather is closely woven at three-dimensional space by natural protein fibre and constitutes, and there is a kind of special grain layer on its surface, has the graining and the gloss of nature, hand feel and drape.The fur of goat is a kind of senior raw material skin.Goatskin pore eye several rows of being " watt shape ", careful, the fibre compact in surface has a large amount of fine fleece pores to be that semicircle is arranged, feel is tight, is used for making upper leather, clothing leather, glove leather, Yin Bao and part woman bag more, gets consumer reception very much.
The waste water majority of leather process industry mainly carries out in the aqueous solution from these two workshop sections of preparatory stage and tanning stage, and waste liquid is discharged continuously or intermittently.The waste water that preparatory stage discharges is strong basicity, accounts for 60% of whole water displacement, contains the muriate of high density in the waste water, sulfide, sanitas, grease, protein and suspended substance etc.The waste water that tanning workshop section discharges is slightly acidic, contains chromium, chemical assistant and dyestuff etc.Salts contg is up to 4000mg/L in the rapid waste liquid of chromium, and the water yield is about 30% of total wastewater flow rate.The process hides composite waste is alkalescence, and is poisonous, and hard-degraded substance content is high, the dirty erosion of outward appearance, and the smell is awful.For many years, people utilize the whole bag of tricks that the various sewage in the leather production are handled, but finally still can't reach perfect condition.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of leather waste water non-pollution processing method of health environment-friendly.
Technical problem to be solved by this invention adopts following technical scheme to realize,
A kind of leather waste water non-pollution processing method is characterized in that: comprise following method steps,
(1) sulfur-containing waste water is got in the desulfurization pond through the pipeline collection, throw in manganous sulfate simultaneously and pour into air and carry out getting into after desulfurization is handled adjusting pre-exposure pond;
(2) with comprehensive wastewater through the big pollutent of grid interception, tentatively remove to get into behind the reluctant impurity and regulate the pre-exposure pond;
(3) in regulating the pre-exposure pond, carrying out aeration processed waste water inflow preliminary sedimentation tank precipitates;
(4) preliminary sedimentation tank top waste water gets into the floating pond of vapour, and bottom mud pumps into plate-and-frame filter press after sending into sludge thickener again, forms dried mud, and centralized collection is handled;
(5) after water outlet got into the floating pond of vapour, input SEPIGEL 305 and Poly aluminum Chloride (PAC) reacted in the floating pond of vapour simultaneously;
(6) the back water outlet that reacts completely gets into first oxygen compatibility pool, gets into the first aeration oxidation pond again, simultaneously in the first aeration oxidation pond, throws oxygen and alkali reacts;
(7) react completely after, nitrification liquid is back to first oxygen compatibility pool in the first aeration oxidation pond, mixing liquid gets into second oxygen compatibility pool, flows into the second aeration oxidation pond again, throws oxygen simultaneously and alkali reacts;
(8) react completely after, nitrification liquid is back to second oxygen compatibility pool in the second aeration oxidation pond, mixing liquid gets into the second pond deposition; Post precipitation; Supernatant flows into water circulating pipe, and a part of mud is back to first oxygen compatibility pool, and a part of mud enters and pumps into plate-and-frame filter press behind the sludge thickener and carry out press filtration and become piece; Centralized collection is handled, and the liquid flow that plate-and-frame filter press produces is gone into water circulating pipe and utilized.
The invention has the beneficial effects as follows: sulfur-containing waste water and other comprehensive wastewater were handled clean during the present invention can produce leather; Greatly reduce the content of foreign material in the sewage; Reduce the influence of sewage to the subsequent production system, the water after guaranteeing to handle can reach the standard of utilizing again.
Description of drawings
Fig. 1 is principle of the invention figure.
Embodiment
For technique means, creation characteristic that the present invention is realized, reach purpose and effect and be easy to understand and understand, below in conjunction with concrete diagram, further set forth the present invention.
As shown in Figure 1, a kind of leather waste water non-pollution processing method, its method steps do,
(1) sulfur-containing waste water is got in the desulfurization pond through the pipeline collection, throw in manganous sulfate simultaneously and pour into air and carry out getting into after desulfurization is handled adjusting pre-exposure pond;
(2) with comprehensive wastewater through the big pollutent of grid interception, tentatively remove to get into behind the reluctant impurity and regulate the pre-exposure pond;
(3) in regulating the pre-exposure pond, carrying out aeration processed waste water inflow preliminary sedimentation tank precipitates;
(4) preliminary sedimentation tank top waste water gets into the floating pond of vapour, and bottom mud pumps into plate-and-frame filter press after sending into sludge thickener again, forms dried mud, and centralized collection is handled;
(5) after water outlet got into the floating pond of vapour, input SEPIGEL 305 and Poly aluminum Chloride (PAC) reacted in the floating pond of vapour simultaneously;
(6) the back water outlet that reacts completely gets into first oxygen compatibility pool, gets into the first aeration oxidation pond again, simultaneously in the first aeration oxidation pond, throws oxygen and alkali reacts;
(7) react completely after, nitrification liquid is back to first oxygen compatibility pool in the first aeration oxidation pond, mixing liquid gets into second oxygen compatibility pool, flows into the second aeration oxidation pond again, throws oxygen simultaneously and alkali reacts;
(8) react completely after, nitrification liquid is back to second oxygen compatibility pool in the second aeration oxidation pond, mixing liquid gets into the second pond deposition; Post precipitation; Supernatant flows into water circulating pipe, and a part of mud is back to first oxygen compatibility pool, and a part of mud enters and pumps into plate-and-frame filter press behind the sludge thickener and carry out press filtration and become piece; Centralized collection is handled, and the liquid flow that plate-and-frame filter press produces is gone into water circulating pipe and utilized.
More than show and described ultimate principle of the present invention and principal character and advantage of the present invention.The technician of the industry should understand; The present invention is not restricted to the described embodiments; That describes in the foregoing description and the specification sheets just explains principle of the present invention; Under the prerequisite that does not break away from spirit and scope of the invention, the present invention also has various changes and modifications, and these variations and improvement all fall in the scope of the invention that requires protection.The present invention requires protection domain to be defined by appending claims and equivalent thereof.
Claims (1)
1. leather waste water non-pollution processing method is characterized in that: comprise following method steps,
A. sulfur-containing waste water is got in the desulfurization pond through the pipeline collection, throw in manganous sulfate simultaneously and pour into air and carry out getting into after desulfurization is handled adjusting pre-exposure pond;
B. with comprehensive wastewater through the big pollutent of grid interception, tentatively remove to get into behind the reluctant impurity and regulate the pre-exposure pond;
C. in regulating the pre-exposure pond, carrying out aeration processed waste water inflow preliminary sedimentation tank precipitates;
D. preliminary sedimentation tank top waste water gets into the floating pond of vapour, and bottom mud pumps into plate-and-frame filter press after sending into sludge thickener again, forms dried mud, and centralized collection is handled;
E. after water outlet got into the floating pond of vapour, input SEPIGEL 305 and Poly aluminum Chloride (PAC) reacted in the floating pond of vapour simultaneously;
F. the back water outlet that reacts completely gets into first oxygen compatibility pool, gets into the first aeration oxidation pond again, and throwing oxygen and alkali react in the first aeration oxidation pond simultaneously;
G. after reacting completely, nitrification liquid is back to first oxygen compatibility pool in the first aeration oxidation pond, and mixing liquid gets into second oxygen compatibility pool, flows into the second aeration oxidation pond again, throws oxygen simultaneously and alkali reacts;
H. after reacting completely, nitrification liquid is back to second oxygen compatibility pool in the second aeration oxidation pond, and mixing liquid gets into the second pond deposition; Post precipitation; Supernatant flows into water circulating pipe, and a part of mud is back to first oxygen compatibility pool, and a part of mud enters and pumps into plate-and-frame filter press behind the sludge thickener and carry out press filtration and become piece; Centralized collection is handled, and the liquid flow that plate-and-frame filter press produces is gone into water circulating pipe and utilized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103600719A CN102503039A (en) | 2011-11-14 | 2011-11-14 | Nuisanceless leather wastewater treatment method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103600719A CN102503039A (en) | 2011-11-14 | 2011-11-14 | Nuisanceless leather wastewater treatment method |
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| CN102503039A true CN102503039A (en) | 2012-06-20 |
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| CN2011103600719A Pending CN102503039A (en) | 2011-11-14 | 2011-11-14 | Nuisanceless leather wastewater treatment method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103787549A (en) * | 2014-01-26 | 2014-05-14 | 河南迪诺环保科技股份有限公司 | Method for pretreating tannery wastewater |
| CN104193111A (en) * | 2014-09-17 | 2014-12-10 | 福建隆上超纤有限公司 | Treatment method for waste water from artificial leather |
| CN104478167A (en) * | 2014-12-10 | 2015-04-01 | 重庆隆发皮革制品有限责任公司 | Treatment process and treatment system of chromium-containing wastewater in leather wastewater |
| CN104529071A (en) * | 2014-12-24 | 2015-04-22 | 北京桑德环境工程有限公司 | System and method for treating village sewage |
| CN106277620A (en) * | 2016-08-30 | 2017-01-04 | 安徽银河皮革有限公司 | A kind of leather cleaning production technology |
| CN106830541A (en) * | 2017-02-28 | 2017-06-13 | 辽宁富新新材料有限公司 | Lixivium circulates the method with cleaning tanning |
Citations (3)
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|---|---|---|---|---|
| JP2006136853A (en) * | 2004-11-15 | 2006-06-01 | Nitto Denko Corp | Waste water treatment apparatus and system using it |
| CN101555086A (en) * | 2009-05-22 | 2009-10-14 | 北京中科清水科技有限公司 | Biological treatment method of leather wastewater |
| CN101643287A (en) * | 2008-08-06 | 2010-02-10 | 崔磊 | Method for treating waste water from leather production |
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2011
- 2011-11-14 CN CN2011103600719A patent/CN102503039A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2006136853A (en) * | 2004-11-15 | 2006-06-01 | Nitto Denko Corp | Waste water treatment apparatus and system using it |
| CN101643287A (en) * | 2008-08-06 | 2010-02-10 | 崔磊 | Method for treating waste water from leather production |
| CN101555086A (en) * | 2009-05-22 | 2009-10-14 | 北京中科清水科技有限公司 | Biological treatment method of leather wastewater |
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| 王敏等: "预处理-化学沉淀-SBR工艺处理制革废水", 《皮革与化工》 * |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103787549A (en) * | 2014-01-26 | 2014-05-14 | 河南迪诺环保科技股份有限公司 | Method for pretreating tannery wastewater |
| CN104193111A (en) * | 2014-09-17 | 2014-12-10 | 福建隆上超纤有限公司 | Treatment method for waste water from artificial leather |
| CN104193111B (en) * | 2014-09-17 | 2015-11-18 | 福建隆上超纤有限公司 | A kind of leatheroid method of wastewater treatment |
| CN104478167A (en) * | 2014-12-10 | 2015-04-01 | 重庆隆发皮革制品有限责任公司 | Treatment process and treatment system of chromium-containing wastewater in leather wastewater |
| CN104529071A (en) * | 2014-12-24 | 2015-04-22 | 北京桑德环境工程有限公司 | System and method for treating village sewage |
| CN106277620A (en) * | 2016-08-30 | 2017-01-04 | 安徽银河皮革有限公司 | A kind of leather cleaning production technology |
| CN106830541A (en) * | 2017-02-28 | 2017-06-13 | 辽宁富新新材料有限公司 | Lixivium circulates the method with cleaning tanning |
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Application publication date: 20120620 |