CN101624243B - Treatment technology of acid washing and alkaline washing waste liquid of aluminum substrate - Google Patents
Treatment technology of acid washing and alkaline washing waste liquid of aluminum substrate Download PDFInfo
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- CN101624243B CN101624243B CN2009100657826A CN200910065782A CN101624243B CN 101624243 B CN101624243 B CN 101624243B CN 2009100657826 A CN2009100657826 A CN 2009100657826A CN 200910065782 A CN200910065782 A CN 200910065782A CN 101624243 B CN101624243 B CN 101624243B
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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
Abstract
The invention relates to a technology of industrial waste liquid treatment, and provides a treatment technology of acid washing and alkaline washing waste liquid of aluminum substrate. The treatment technology is mainly characterized in that oil removal, iron removal and phosphorus and silica removal pretreatments are respectively carried out on acid washing waste liquid and alkaline washing waste liquid, and the acid washing waste liquid and the alkaline washing waste liquid are mixed, neutralized and separated, oily filter residue can be used as fuel, filter cakes can be recycled, and the waste water discharged reaches the standard. The treatment technology can perform smooth treatment to a large amount of acid washing and caustic washing waste liquid of aluminum substrate, can not cause additional pollution, can recycle side products, and solves the technical problem in the field at home and abroad for a long time, and a pilot-scale test shows that the design is reasonable, the technology is easy to be implemented, and the technology has great social, environmental protection and economic benefits.
Description
Technical field
The invention belongs to the industrial effluent treatment process, relate to the treatment process of aluminium base pickling and alkali-washing waste liquid.
Background technology
Production PS version, CTP version aluminium base must carry out processing such as oil removing, decontamination, electrolysis, post-etching, anodic oxidation both at home and abroad, therefore produce a large amount of pickling, alkali-washing waste liquid.Main hydrochloric 3～4g/L in the spent pickle liquor, sulfuric acid 30～40g/L, aluminium 3～10g/L, iron 1～30mg/L, pH value 1.0～1.2; Mainly contain sodium hydroxide and soda ash in the alkali-washing waste liquid, aluminium 30～60g/L, iron 1～20mg/L, minor amount of silicon, phosphorus and oil content, pH value 12.5～13.0.To produce 3000 ten thousand m per year
2The PS version is an example, the about 300m of spent pickle liquor that produce every day
3, the about 50m of alkali-washing waste liquid
3, cause substantial pollution to threaten to environment.
Be to eliminate the pollution of pickling alkali-washing waste liquid to environment, traditional treatment process is taked: spent pickle liquor and alkali-washing waste liquid are mixed, add liquid caustic soda again or other alkaline matter is neutralized to pH6～9, this moment, aluminum ion formed amorphous hydroted alumina.Because of separation difficulty, need to add materials such as flocculating aids such as lime, then with separation device separates such as plate-and-frame filter press.Isolating waste water meets national sewage comprehensive emission standard (GB8978-1996) secondary discharge standard and directly discharges; The filter cake mud main component that produces is amorphous hydroted alumina, calcium sulfate, calcium hydroxide and a small amount of oily matter, and filter cake is moisture between 75%～90%.
The defective that traditional method exists is: 1. in treating processes, the oil content in the waste liquid easily stops up filter cloth, causes filtering velocity slow, and filter cloth is short work-ing life; 2. the filter cake mud of Chan Shenging can cause secondary pollution, as to producing 3000 ten thousand m per year
2The factory of PS version, the annual filter cake mud that produces is at 10000m
3More than, can not recycle; 3. processing costs height, corresponding above-mentioned scale enterprise, annual sewage disposal expense is at 6,000,000 yuan～1,200 ten thousand yuan, and the equipment factory building drops into more than 2,000 ten thousand yuan.
Summary of the invention
The contriver is in the Social surveys practical activity, find that there is big defective in traditional treatment process to aluminium base spent pickle liquor, alkali-washing waste liquid, through researching and analysing, explore repeatedly, purpose is to provide the treatment process of a kind of aluminium base pickling and alkali-washing waste liquid, can solve the problem that existing treatment process exists preferably, accomplish not only to handle but also do not produce secondary pollution, can recycle useful by-product again.
The technical solution used in the present invention provides the treatment process of a kind of aluminium base pickling and alkali-washing waste liquid, take following flow process: respectively aluminium base spent pickle liquor, alkali-washing waste liquid are made the filter cake that pre-treatment-mixing-neutralization-separation-De is recyclable, utilize, qualified discharge waste water.
In above-mentioned technology, wherein spent pickle liquor is carried out pre-treatment, take in spent pickle liquor to add an amount of reductive agent, with deleterious Fe
3+In being converted into and the time can sedimentary Fe
2+, essence filter refining spent pickle liquor.Wherein to the pre-treatment of alkali-washing waste liquid, take in per 100 parts of alkali-washing waste liquids, to add 0.1～10 part oxygenant, place 0.5～12h with deironing; Therefrom take out 1～5 part and make modulating liquid, modulating liquid is placed still, heating adds 0.05～0.5 part of emulsion splitter, makes it dissolve the liquid as A fully, adds the acclimatization agent therein in 99～95 parts to precipitate impurity such as phosphorus, silicon as B liquid; Under high-speed stirring, A liquid is mixed with B liquid; Separate, pressure filter separates through pretreated refining alkali-washing waste liquid and oil-containing filter residue, and oil content separates with filter residue, can do the fuel utilization.Wherein, mix, neutralize, take pretreated spent pickle liquor is mixed with pretreated alkali-washing waste liquid, add an amount of solubility alkalescence material and be neutralized to pH6～9; Wherein separate and adopt plate-and-frame filter press that preceding neutralizer is separated, get the bigger filter cake of recyclable utility value, discharge qualified waste water.
In order to improve the filtering separation effect, prolong sheet frame canvas press cloth work-ing life, after certain batch of feed liquid of every processing, to filter cloth spent acid solution soaking and washing.
Because the present invention takes technique scheme and measure, by spent pickle liquor being added the reductive agent deironing, alkali-washing waste liquid is added emulsion splitter lipid acid oil removing and oxidizer deironing, add impurity such as precipitation agent dephosphorization silicon, can not only prevent the obstruction of oily components to filter cloth, improve filter effect, prolong filter cloth work-ing life, and isolated oil-containing filter residue can utilize and makes fuel, adding water soluble alkali further neutralizes, isolated filter cake is the very high aluminium hydroxide wet gel of purity, recyclable utilization, the waste discharge conformance with standard has solved for a long time both at home and abroad at the unsolved technical barrier in this field.
Alkali-washing waste liquid pretreatment process of the present invention is suitable for the processing to other alkali-washing waste liquid, with recycle and reuse.
Through PS version aluminium base spent pickle liquor, alkali-washing waste liquid pilot scale being handled in Lekai group; show operational path science of the present invention, advanced person; operation is normal; realized both to liquid waste disposal; do not produce new pollution again; valuable byproduct be can recycle again,, important social benefit and remarkable economic efficiency brought again for the corporate environment protection has solved the technical barrier of puzzlement for a long time.
Description of drawings
Fig. 1 represents the technological process block-diagram of the treatment process of aluminium base pickling of the present invention and alkali-washing waste liquid.
Embodiment
Reach embodiment in conjunction with the accompanying drawings, further specify the idiographic flow step of technology of the present invention.
The treatment process of aluminium base pickling of the present invention and alkali-washing waste liquid referring to Fig. 1, adopts following process step: respectively to aluminium base spent pickle liquor, the alkali-washing waste liquid pre-treatment-mixing-recyclable utilization of neutralization-separation-filter cake, discharged wastewater met the national standard.
In above-mentioned steps, wherein spent pickle liquor is carried out the deironing pre-treatment, take in spent pickle liquor, to add reductive agent sulphite, sulfurous gas, oxammonium hydrochloride or xitix etc., reductive agent consumption 0.001～.02mol/L, through 0.5～10h, make detrimental impurity Fe wherein
3+Change Fe into
2+, the smart again particulate matter that filters the dust in the spent pickle liquor must be made with extra care spent pickle liquor.Wherein, alkali-washing waste liquid is carried out oil removing, deironing, dephosphorization, silicon pre-treatment, adopting the concentration add 0.1～10 part in per 100 parts of alkali-washing waste liquids is 30% hydrogen peroxide deironing, places 0.5～20h.Get wherein 1～5 part of heating, add 0.05～0.5 part C
12-C
18Lipid acid, it is dissolved fully, modulate A liquid; Get wherein 95～99 parts and add 0.1%～2% milk of limes and make precipitation agent, make contamination precipitations such as phosphorus, silicon, B liquid; A liquid is squeezed into B liquid violent stirring mix, separate, must make with extra care alkali-washing waste liquid, filter residue.Filter residue contains oil content, can do the fuel utilization.
Wherein, mix, neutralize, refining spent pickle liquor and the refining alkali-washing waste liquid taking to obtain after the pre-treatment mix, and add an amount of solubility alkalescence material again mixed solution is transferred to pH value 6～9.Iron content, sila matter in water soluble alkali can need not add lipid acid with reference to the disposal methods to alkali-washing waste liquid.Wherein, separate to adopt common plate-and-frame filter press to separate, because oil removing in early stage, separate smooth and easyly, filter cake is the recyclable utilization of aluminium hydroxide wet gel, discharged wastewater met the national standard.
This treatment process of the present invention to aluminium base pickling and alkali-washing waste liquid, warp is in the pilot scale of Nanyang City, Henan Province The Second Film Factory of Lucky Group, show technological design science of the present invention, rationally advanced, operation is normal, both realized smooth processing to spent pickle liquor, alkali-washing waste liquid, do not produce new pollution again, can reclaim valuable byproduct again, solved for a long time both at home and abroad at the insoluble technical barrier in this field, has the important social benefit, environmental benefit and economic benefit.
Claims (2)
1. the treatment process of aluminium base pickling and alkali-washing waste liquid, adopt following flow process: respectively aluminium base spent pickle liquor, alkali-washing waste liquid are made the filter cake that pre-treatment-mixing-neutralization-separation-De is recyclable, utilize, qualified discharge waste water, it is characterized in that wherein spent pickle liquor being carried out pre-treatment, take in spent pickle liquor to add an amount of reductive agent, with deleterious Fe
3+In being converted into and the time can sedimentary Fe
2+, essence filter refining spent pickle liquor; Wherein to the pre-treatment of alkali-washing waste liquid, take in per 100 parts of alkali-washing waste liquids, to add 0.1～10 part oxygenant, place 0.5～12h with deironing; Therefrom take out 1～5 part and make modulating liquid, modulating liquid is placed still, heating, add 0.05～0.5 part of emulsion splitter, make it dissolve liquid fully as A, add in 99～95 parts therein the acclimatization agent with precipitation phosphorus, sila matter as B liquid, under high-speed stirring, A liquid is mixed with B liquid; The alkali-washing waste liquid pre-treatment separates, and pressure filter separates through pretreated refining alkali-washing waste liquid and oil-containing filter residue, and oil content separates with filter residue, can do the fuel utilization; Wherein, mix, neutralize, take pretreated spent pickle liquor is mixed with pretreated alkali-washing waste liquid, add an amount of solubility alkalescence material and be neutralized to pH6～9; Wherein separate and adopt plate-and-frame filter press that preceding neutralizer is separated, get the recyclable filter cake that utilizes, discharge qualified waste water.
2. the treatment process of aluminium base pickling as claimed in claim 1 and alkali-washing waste liquid is characterized in that described pressure filter separating step, after certain batch of feed liquid of every processing, to filter cloth spent pickle liquor soaking and washing.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009100657826A CN101624243B (en) | 2009-08-05 | 2009-08-05 | Treatment technology of acid washing and alkaline washing waste liquid of aluminum substrate |
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| CN2009100657826A CN101624243B (en) | 2009-08-05 | 2009-08-05 | Treatment technology of acid washing and alkaline washing waste liquid of aluminum substrate |
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| CN101624243A CN101624243A (en) | 2010-01-13 |
| CN101624243B true CN101624243B (en) | 2011-04-13 |
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Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| TWI586923B (en) * | 2010-02-23 | 2017-06-11 | 太平洋水泥股份有限公司 | Method and system for washing incineration ash and dust contained in extracted cement kiln combustion gas |
| CN101786746A (en) * | 2010-03-05 | 2010-07-28 | 申明乐 | Process for treating aluminum substrate acid cleaning and alkaline cleaning waste liquid |
| CN102649377B (en) * | 2011-02-23 | 2014-04-23 | 中国科学院化学研究所 | Preparation method for aluminum plate base for direct plate making in inkjet printing |
| CN102627362A (en) * | 2012-04-10 | 2012-08-08 | 乐凯华光印刷科技有限公司 | Process for recycling aluminum hydroxide from acid wastewater containing aluminum ions |
| CN102642945A (en) * | 2012-04-10 | 2012-08-22 | 乐凯华光印刷科技有限公司 | Technique for recycling aluminum hydroxide from waste liquid for acid washing and alkaline washing aluminum-based material |
| CN102965660A (en) * | 2012-10-22 | 2013-03-13 | 大连碧城环保科技有限公司 | Method for quickly separating discarded phosphating solutions |
| CN103451436B (en) * | 2013-09-02 | 2015-04-29 | 佛山市三水雄鹰铝表面技术创新中心有限公司 | System for neutralizing treatment of demoulding waste liquor and anodic oxidation waste liquor and recovery of aluminum ions of aluminum processing plant |
| CN107640845A (en) * | 2016-07-22 | 2018-01-30 | 天津市茂联科技有限公司 | A kind of waste water dephosphorization method under alkalescence condition |
| CN107999047B (en) * | 2016-10-28 | 2020-05-19 | 中国石油化工股份有限公司 | Boron-containing hydrated alumina composition, molded body, preparation method and application of boron-containing hydrated alumina composition, catalyst and preparation method of catalyst |
| CN107686198B (en) * | 2017-09-15 | 2021-04-30 | 上海电力学院 | Multi-operation-mode cleaning wastewater treatment system and application thereof |
| CN107986308B (en) * | 2017-12-29 | 2019-10-01 | 佛山市三水雄鹰铝表面技术创新中心有限公司 | A kind of workshop system and technique stewing mould liquid production aluminium hydroxide |
| CN110078261B (en) * | 2019-05-20 | 2024-02-09 | 中国恩菲工程技术有限公司 | Method and system for treating wastewater |
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| US6228269B1 (en) * | 1999-10-19 | 2001-05-08 | Steven Cort | Methods for treating wastewater containing hard-to-filter solids, in particular photoresist and paint sludges |
| CN2458296Y (en) * | 2000-12-12 | 2001-11-07 | 天津市超净过滤技术研究所 | Equipment for treating high-concentrated metal ion acidity waste water |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6228269B1 (en) * | 1999-10-19 | 2001-05-08 | Steven Cort | Methods for treating wastewater containing hard-to-filter solids, in particular photoresist and paint sludges |
| CN2458296Y (en) * | 2000-12-12 | 2001-11-07 | 天津市超净过滤技术研究所 | Equipment for treating high-concentrated metal ion acidity waste water |
Non-Patent Citations (1)
| Title |
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| 周刚.铝基PS版生产废液的处理.《有色金属加工》.2008,第37卷(第5期), * |
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| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: LUCKY HUAGUANG GRAPHICS CO., LTD. Effective date: 20130725 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| C53 | Correction of patent of invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Shen Mingle Inventor after: Zhang Fugang Inventor after: Gao Feng Inventor after: Yang Yongkuan Inventor after: Zhao Weijian Inventor after: Zhang Gang Inventor after: Li Hecheng Inventor before: Shen Mingle |
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| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 473100 NANYANG, HENAN PROVINCE TO: 473000 NANYANG, HENAN PROVINCE Free format text: CORRECT: INVENTOR; FROM: SHEN MINGLE TO: SHEN MINGLE ZHANG FUGANG GAO FENG YANG YONGKUAN ZHAO WEIJIAN ZHANG GANG LI HECHENG |
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| TR01 | Transfer of patent right |
Effective date of registration: 20130725 Address after: Changjiang Road, Nanyang City Wancheng District 473000 of Henan province Nanyang Institute of Technology No. 80 Patentee after: Shen Mingle Patentee after: Lucky Huaguang Graphics Co.,Ltd. Address before: Changjiang Road, Nanyang City Wancheng District 473100 of Henan province Nanyang Institute of Technology No. 80 Patentee before: Shen Mingle |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110413 |
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| CF01 | Termination of patent right due to non-payment of annual fee |