CN104843957A - Method for comprehensively treating waste hydrochloric acid and alkaline sludge generated in steel wire rope processing process - Google Patents
Method for comprehensively treating waste hydrochloric acid and alkaline sludge generated in steel wire rope processing process Download PDFInfo
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- CN104843957A CN104843957A CN201510276802.XA CN201510276802A CN104843957A CN 104843957 A CN104843957 A CN 104843957A CN 201510276802 A CN201510276802 A CN 201510276802A CN 104843957 A CN104843957 A CN 104843957A
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- hydrochloric acid
- waste hydrochloric
- acid
- alkaline sludge
- wireline
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Abstract
The invention provides a method for comprehensively treating waste hydrochloric acid and alkaline sludge generated in the steel wire rope processing process. The waste hydrochloric acid generated in the steel wire rope processing process is added into the alkaline sludge generated in the steel wire rope processing process; then, the stirring is carried out, so that the sufficient reaction is taken, and a suspension with a small number of acid non-soluble substances is formed; when the PH value in the suspension is not changed, the stirring is stopped; then, the small amount of acid non-soluble substances in the suspension are filtered away, so that acid filter liquid containing various metal ions can be obtained; the PH value of the acid filter liquid is controlled to be in a range being 0 to 1. The mass ratio of the hydrochloric acid to the alkaline sludge is (1-8):1. The hydrochloric acid concentration in the waste hydrochloric acid is not lower than 5 percent, and the hydrochloric acid is added for regulation when the hydrochloric acid concentration in the waste hydrochloric acid is lower than 5 percent.
Description
Technical field
The present invention relates to industrial waste acid and administer field, particularly a kind of waste hydrochloric acid to generation in wireline processing and alkaline sludge carry out the method for comprehensive treating process.
Background technology
Wireline needs to carry out pickling to remove the oxide skin of metallic surface with hydrochloric acid in the course of processing, along with in pickle solution hydrochloric acid, the concentration of iron increases gradually, and the corresponding reduction of the acidity of hydrochloric acid, necessarily then must scrap when concentration of iron reaches, so generation waste hydrochloric acid, often produce one ton of wireline, by the waste hydrochloric acid of generation about 0.032 ton, the waste hydrochloric acid iron content, zinc, the plumbous plurality of impurities that are formed, affect it and directly utilize.Except pickling, also need in the wireline course of processing to carry out phosphatization, the operations such as zinc-plated and lead bath thermal treatment, through overpickling, phosphatization, wireline after the operations such as zinc-plated and lead bath thermal treatment must rinse with water, water after flushing just forms acid waste water, with calcium hydroxide to the process of acid waste water, sodium hydroxide or other alkaline matters neutralize, iron content can be formed in waste water after neutralization, zinc, the solid sediment of plumbous plurality of impurities, after filter press, obtain filter cake and the alkaline sludge of moisture about 80%, data shows, often produce one ton of wireline and can produce this alkaline sludge about 0.016 ton.Waste hydrochloric acid and alkaline sludge are because of containing metal and heavy metal compounds such as iron, zinc, lead, and belong to Hazardous wastes, need special disposal, how to process these Hazardous wastess is the difficult problem that manufacturing enterprise faces always.
At present, the process of manufacturing enterprise to waste hydrochloric acid and alkaline sludge is all adopt individual curing respectively, to the process of waste hydrochloric acid be generally strange land dispose, strange land is disposed and be there is risk of carriage, current disposal waste hydrochloric acid normally one-step calcinations, this method not only consumes energy greatly, and the iron oxide red obtained is leaded, and quality is not high.Also useful chemical method is made into molysite water clarifier, but can cause the transfer of heavy metal lead, zinc pollution when using.Landfill is generally adopted to alkaline sludge or through smelting in rotary kiln, landfill can pollute underground water, although the heavy metals such as the lead in mud, zinc can be extracted through smelting in rotary kiln, but mud is moisture reaches about 80%, Pb, Zn content is very low, energy consumption is high, and smelting also can produce containing heavy metal waste gas contaminate environment.
Summary of the invention
The object of the invention is to overcome the above-mentioned deficiency of prior art and provide a kind of waste hydrochloric acid to producing in wireline processing and alkaline sludge to carry out the method for comprehensive treating process.
Technical scheme of the present invention is: a kind of waste hydrochloric acid to generation in wireline processing and alkaline sludge carry out the method for comprehensive treating process, the waste hydrochloric acid produced in the wireline course of processing is joined in the alkaline sludge produced in the wireline course of processing, then stir, it is made fully to react the suspension formed containing a small amount of acid non-soluble substance, stop when the pH value in suspension no longer changes stirring, passed through a small amount of acid non-soluble substance filtered in suspension again, thus the acid filtrate obtained containing many kinds of metal ions, the pH value of acid filtrate controls in 0 ~ 1 scope.
The mass ratio of waste hydrochloric acid and alkaline sludge is 1 ~ 8:1,
Concentration of hydrochloric acid in described waste hydrochloric acid is not less than 5%, when the concentration of hydrochloric acid in waste hydrochloric acid lower than 5% time, add hydrochloric acid adjustment.
The present invention compared with prior art has following features:
1, method provided by the invention carries out treatment in situ, waste recycling to the waste hydrochloric acid produced in wireline processing and alkaline sludge, reduces processing cost, decreases environmental pollution.
2, the alkaline sludge of more difficult separation is become compare easy to handle acid filtrate, the easier separation, impurity removal of this acid filtrate, the acid filtrate after removal of impurities is fully utilized.
Below in conjunction with embodiment, the invention will be further described.
Embodiment
Embodiment one, a kind of waste hydrochloric acid to generation in wireline processing and alkaline sludge carry out the method for comprehensive treating process, the waste hydrochloric acid produced in the wireline course of processing is joined in the alkaline sludge produced in the wireline course of processing, then stir, it is made fully to react the suspension formed containing a small amount of acid non-soluble substance, stop when the pH value in suspension no longer changes stirring, passed through a small amount of acid non-soluble substance filtered in suspension again, thus the acid filtrate obtained containing many kinds of metal ions, the pH value of acid filtrate is 0.65.
The mass ratio of waste hydrochloric acid and alkaline sludge is 4.5:1.
Concentration of hydrochloric acid in described waste hydrochloric acid is 9%, when the concentration of hydrochloric acid in waste hydrochloric acid lower than 9% time, add hydrochloric acid adjustment.
Embodiment two, a kind of waste hydrochloric acid to generation in wireline processing and alkaline sludge carry out the method for comprehensive treating process, the waste hydrochloric acid produced in the wireline course of processing is joined in the alkaline sludge produced in the wireline course of processing, then stir, it is made fully to react the suspension formed containing a small amount of acid non-soluble substance, stop when the pH value in suspension no longer changes stirring, passed through a small amount of acid non-soluble substance filtered in suspension again, thus the acid filtrate obtained containing many kinds of metal ions, the pH value of acid filtrate is 0.98.
The mass ratio of waste hydrochloric acid and alkaline sludge is 2:1.
Concentration of hydrochloric acid in described waste hydrochloric acid is 18%, when the concentration of hydrochloric acid in waste hydrochloric acid lower than 18% time, add hydrochloric acid adjustment.
Embodiment three, a kind of waste hydrochloric acid to generation in wireline processing and alkaline sludge carry out the method for comprehensive treating process, the waste hydrochloric acid produced in the wireline course of processing is joined in the alkaline sludge produced in the wireline course of processing, then stir, it is made fully to react the suspension formed containing a small amount of acid non-soluble substance, stop when the pH value in suspension no longer changes stirring, passed through a small amount of acid non-soluble substance filtered in suspension again, thus the acid filtrate obtained containing many kinds of metal ions, the pH value of acid filtrate is 0.59.
The mass ratio of waste hydrochloric acid and alkaline sludge is 3:1.
Concentration of hydrochloric acid in described waste hydrochloric acid is 14%, when the concentration of hydrochloric acid in waste hydrochloric acid lower than 14% time, add hydrochloric acid adjustment.
Claims (3)
1. one kind is carried out the method for comprehensive treating process to the waste hydrochloric acid produced in wireline processing and alkaline sludge, it is characterized in that: the waste hydrochloric acid produced in the wireline course of processing is joined in the alkaline sludge produced in the wireline course of processing, then stir, it is made fully to react the suspension formed containing a small amount of acid non-soluble substance, stop when the pH value in suspension no longer changes stirring, passed through a small amount of acid non-soluble substance filtered in suspension again, thus the acid filtrate obtained containing many kinds of metal ions, the pH value of acid filtrate controls in 0 ~ 1 scope.
2. a kind of waste hydrochloric acid to generation in wireline processing according to claim 1 and alkaline sludge carry out the method for comprehensive treating process, it is characterized in that: the mass ratio of waste hydrochloric acid and alkaline sludge is 1 ~ 8:1.
3. a kind of waste hydrochloric acid to generation in wireline processing according to claim 1 and 2 and alkaline sludge carry out the method for comprehensive treating process, it is characterized in that: the concentration of hydrochloric acid in described waste hydrochloric acid is not less than 5%, when the concentration of hydrochloric acid in waste hydrochloric acid lower than 5% time, add hydrochloric acid adjustment.
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| CN201510276802.XA CN104843957A (en) | 2015-05-27 | 2015-05-27 | Method for comprehensively treating waste hydrochloric acid and alkaline sludge generated in steel wire rope processing process |
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| CN201510276802.XA CN104843957A (en) | 2015-05-27 | 2015-05-27 | Method for comprehensively treating waste hydrochloric acid and alkaline sludge generated in steel wire rope processing process |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105271436A (en) * | 2015-10-19 | 2016-01-27 | 刘阳生 | Method for preparing polyferric chloride flocculant by using steel wire rope sludge and waste salt |
| CN106186445A (en) * | 2016-08-30 | 2016-12-07 | 环境保护部南京环境科学研究所 | A kind of steel wire rope acid-washing waste acid and containing high zinc, lead mud disposal system and technique altogether |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101428914A (en) * | 2007-11-07 | 2009-05-13 | 周新华 | High-activity processing method for waste liquor of cation exchange resin elution in lemon acid purification process |
| CN101618929A (en) * | 2008-11-04 | 2010-01-06 | 刘文治 | Method of treating alkaline sludge containing heavy metal as resources |
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2015
- 2015-05-27 CN CN201510276802.XA patent/CN104843957A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101428914A (en) * | 2007-11-07 | 2009-05-13 | 周新华 | High-activity processing method for waste liquor of cation exchange resin elution in lemon acid purification process |
| CN101618929A (en) * | 2008-11-04 | 2010-01-06 | 刘文治 | Method of treating alkaline sludge containing heavy metal as resources |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105271436A (en) * | 2015-10-19 | 2016-01-27 | 刘阳生 | Method for preparing polyferric chloride flocculant by using steel wire rope sludge and waste salt |
| CN106186445A (en) * | 2016-08-30 | 2016-12-07 | 环境保护部南京环境科学研究所 | A kind of steel wire rope acid-washing waste acid and containing high zinc, lead mud disposal system and technique altogether |
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Application publication date: 20150819 |