CN103030198A - Preparation method of dyeing wastewater decolorizing coagulant - Google Patents
Preparation method of dyeing wastewater decolorizing coagulant Download PDFInfo
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- CN103030198A CN103030198A CN2012105159994A CN201210515999A CN103030198A CN 103030198 A CN103030198 A CN 103030198A CN 2012105159994 A CN2012105159994 A CN 2012105159994A CN 201210515999 A CN201210515999 A CN 201210515999A CN 103030198 A CN103030198 A CN 103030198A
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- coagulant
- decolorizing
- decoloration
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Abstract
The invention provides a preparation method of a dyeing wastewater decolorizing coagulant. According to the decolorizing coagulant, newly prepared polymerized aluminum sulfate is added in the hydrolytic polymerization process of iron ions in different valence states, and the synergistic action among different effective ingredients are utilized to generate excellent decolorizing effect and coagulating effect. The preparation method comprises the following steps: adding a certain proportion of ferrous sulfate into waste hydrochloric acid generated after washing steel tubes, adding a certain amount of polymerized aluminum sulfate, and finally adding an oxidizer to convert partial bivalent iron into trivalent iron, wherein the mass ratio of Fe<3+> to Fe<2+> is 2:1, and the aluminum oxide content in the solution is 1.5-2%. The product has the advantages of accessible raw materials, low cost and excellent effect.
Description
Technical field
The present invention relates to a kind of preparation method of decolor coagulant for waste water in dyeing industry, belong to the inorganic polymer chemical field.
Background technology
The decolor coagulant for waste water in dyeing industry that contains trivalent iron salt or ferrous salt of commonly using at present, mainly be ferrous sulfate, bodied ferric sulfate etc., processing to dyeing waste water, there is the decolouring narrow range, be not suitable with the changeable mal-condition of water quality, flat fluffy, the sedimentation speed of the precipitation that produces waits shortcoming slowly, such as the waste water almost not decolouring of bodied ferric sulfate to containing reactive dyestuffs, also easily uses the steeping in water for reconstitution Huang; And the ferrous sulfate consumption is large, and alumen ustum is little, is difficult for precipitation; Adopt the coagulating agent of dry technology for production preparation, temperature is higher, and energy consumption is large, has " three wastes " to produce.
Summary of the invention
The objective of the invention is to adopt pickling steel pipe waste liquid to produce a kind of decoloration coagulant agent, its wide ranges of decolouring, strong adaptability, production technique is simple, easy handling, production process environmental protection.
Embodiment
Most preferred embodiment of the present invention:
Embodiment 1: add hydrochloric acid pickling waste liquor 250ml (Fe in the 500ml beaker
2+%=8.1%, HCl%=5.61%), then add ferrous sulfate (ferrous massfraction is in 18%) 50g, then add polyaluminium sulfate (Al
2O
3%=10.0%, basicity 6%) 120g, the oxygenant of adding 20g under the agitation condition, when detection did not have free acid, gained liquid was finished product, is numbered QLTS.
QLTS is as shown in table 1 with coagulant polymeric ferric sulfate (PFS), polymeric bisgallic acid alumnium (PACS), the contrast of Tai-Ace S 150 (AS) decoloration performance commonly used.
Table 1QLTS and coagulating agent decolorizing effect commonly used are relatively
| Coagulating agent | QLTS | PFS(Fe％＝11.2％) | PACS(Al 2O 3％＝10％) | AS(Al 2O 3％＝8.2％) |
| Reactive Brilliant Red K-2BP | 98.2％ | 10.0％ | 16.7 | 10.2％ |
| The GR acid scarlet | 98.3％ | 163.7％ | 61.7 | 13.3％ |
| Threne dark blue VB | 95.0％ | 33.3％ | 99 | 26.85％ |
| Alkaline bright yellow | 99.3％ | 98.3％ | 95 | 96.7％ |
| Disperse Red | 99.5％ | 96.75 | 50 | 98.7％ |
Annotate: the data in the above form are percent of decolourization, and the dosage of coagulating agent is 50mg/L, and every kind of coagulating agent carries out the equal size dilution according to the content of effective constituent.
Claims (4)
1. the preparation method of a decolor coagulant for waste water in dyeing industry is characterized in that, coagulating agent is reddish-brown liquid, and adopting the spent pickle liquor of pipe mill or trombone slide factory is raw material, a certain amount of ferrous sulfate crystal in process of production, polyaluminium sulfate; Add at last an amount of oxygenant.So that Fe
3+/ Fe
2+Massfraction is than being=2: 1, and the middle alumina content of solution is 1.5%～2%.
2. the preparation method of decoloration coagulant agent according to claim 1 is characterized in that, adds a certain amount of ferrous sulfate crystal, adjust acid pickle of acid washing itself with the ferrous acid mass ratio be 2: 1.
3. the preparation method of decoloration coagulant agent according to claim 1 is characterized in that, in the polyaluminium sulfate of adding, alumina content is 10～12%, basicity 2～20%.The quality of alumina mark of the amount that adds in the decoloration coagulant agent solution is advisable as 1.5～2%.
4. the preparation method of decoloration coagulant agent according to claim 1, the oxygenant that uses is the strong oxidizing property materials such as sodium chlorate, Potcrate, hydrogen peroxide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105159994A CN103030198A (en) | 2012-11-29 | 2012-11-29 | Preparation method of dyeing wastewater decolorizing coagulant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105159994A CN103030198A (en) | 2012-11-29 | 2012-11-29 | Preparation method of dyeing wastewater decolorizing coagulant |
Publications (1)
| Publication Number | Publication Date |
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| CN103030198A true CN103030198A (en) | 2013-04-10 |
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| CN2012105159994A Pending CN103030198A (en) | 2012-11-29 | 2012-11-29 | Preparation method of dyeing wastewater decolorizing coagulant |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104402102A (en) * | 2014-12-09 | 2015-03-11 | 浙江省环境保护科学设计研究院 | Enhanced pre-treatment coagulant for printing and dyeing wastewater and preparation method of enhanced pre-treatment coagulant |
| CN108911094A (en) * | 2018-07-12 | 2018-11-30 | 宝武集团环境资源科技有限公司 | A kind of preparation method of iron series composite water purifying agent |
Citations (4)
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|---|---|---|---|---|
| CN1101011A (en) * | 1993-10-27 | 1995-04-05 | 北京市新技术应用研究所 | Production method for polymerization iron sulfate water-purifying agent |
| CN1266819A (en) * | 1999-03-11 | 2000-09-20 | 中国科学院生态环境研究中心 | Flocculant of polyiron chloride prepared from waste hydrochloric acid as pickling liquid of iron and steel and its preparing process |
| CN102344192A (en) * | 2010-12-13 | 2012-02-08 | 新疆德蓝股份有限公司 | Preparation method of special-purposed coagulant used for treating printing and dyeing waste water |
| CN102372308A (en) * | 2010-08-12 | 2012-03-14 | 北京万水净水剂有限公司 | Process for producing polymeric aluminum ferric chloride coagulating agent by using pickling waste water containing iron |
-
2012
- 2012-11-29 CN CN2012105159994A patent/CN103030198A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1101011A (en) * | 1993-10-27 | 1995-04-05 | 北京市新技术应用研究所 | Production method for polymerization iron sulfate water-purifying agent |
| CN1266819A (en) * | 1999-03-11 | 2000-09-20 | 中国科学院生态环境研究中心 | Flocculant of polyiron chloride prepared from waste hydrochloric acid as pickling liquid of iron and steel and its preparing process |
| CN102372308A (en) * | 2010-08-12 | 2012-03-14 | 北京万水净水剂有限公司 | Process for producing polymeric aluminum ferric chloride coagulating agent by using pickling waste water containing iron |
| CN102344192A (en) * | 2010-12-13 | 2012-02-08 | 新疆德蓝股份有限公司 | Preparation method of special-purposed coagulant used for treating printing and dyeing waste water |
Non-Patent Citations (1)
| Title |
|---|
| 莫炳禄等: "聚合硫酸铁和聚合硫酸铝的配伍和性能研究", 《环境保护科学》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104402102A (en) * | 2014-12-09 | 2015-03-11 | 浙江省环境保护科学设计研究院 | Enhanced pre-treatment coagulant for printing and dyeing wastewater and preparation method of enhanced pre-treatment coagulant |
| CN108911094A (en) * | 2018-07-12 | 2018-11-30 | 宝武集团环境资源科技有限公司 | A kind of preparation method of iron series composite water purifying agent |
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Application publication date: 20130410 |