CN1532148A - Method for recovering coagulant from aluminium containing mud - Google Patents
Method for recovering coagulant from aluminium containing mud Download PDFInfo
- Publication number
- CN1532148A CN1532148A CNA031130739A CN03113073A CN1532148A CN 1532148 A CN1532148 A CN 1532148A CN A031130739 A CNA031130739 A CN A031130739A CN 03113073 A CN03113073 A CN 03113073A CN 1532148 A CN1532148 A CN 1532148A
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- China
- Prior art keywords
- aluminium
- mud
- coagulant
- containing sludge
- flocculation agent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The present invention relates to method of recovering coagulant from aluminum-containing mud and features that after aluminum-containing mud is set inside reactor, concentrated sulfuric acid is added while controlling pH value in 3-5 to obtain through reaction the mixture of mud, aluminum salt solution, etc. and the mixture is solid-liquid separated to obtain coagulant liquid. The coagulant is used for processing sewage in the next time, and solid mud is denatured and deposited to reduce volume and water content for easy burning treatment.
Description
Technical field
The present invention relates in a kind of sewage treatment process, from aluminium-containing sludge, reclaim the method for flocculation agent.
Background technology
In the prior art, municipal effluent and dyeing waste are owing to are influenced by various factors, the organism that obtains degrading through the anaerobic-aerobic biochemical treatment accounts for about 50%, all the other can not biochemical treatment organism physico-chemical process commonly used handle, the general aluminium salt that uses is (as aluminum chloride, Tai-Ace S 150, aluminium chlorohydroxide, basic aluminium sulphate) makes flocculation agent, tiny dispersive colloidal sol particulate is by the hydrolysate performance cohesion of aluminium salt in the sewage, the final product of aluminium salt hydrolysis exists with insoluble aluminum hydroxide precipitate, generate small flco, the colloidal impurity that can adsorb and bond, volume is swept them and is separated from water together.Separated object is called aluminium-containing sludge, and its amount is about 5% of a processed sewage quantity, adds polyacrylamide in being gelationus aluminium-containing sludge, after flocculation press filtration operation, sludge volume dwindles 85%, and water content can be transported outward landfill or burning disposal 65%～90%.Aluminium hydroxide in the mud is abandoned together, and will add polyacrylamide, has increased the cost of handling.
Summary of the invention
The object of the invention provides a kind of method that reclaims flocculation agent from aluminium-containing sludge, by adding acid the aluminium hydroxide in the mud is changed into aluminium salt, can recycle as flocculation agent once more.
Technical scheme of the present invention is: a kind of method that reclaims flocculation agent from aluminium-containing sludge, aluminium-containing sludge is positioned in the reactive tank, in aluminium-containing sludge, add the vitriol oil, the add-on of the described vitriol oil is by detecting pH value control, pH value is controlled between 3～5, the mixture that generates behind the stirring reaction comprises mud, aluminum salt solution at least, and the liquid that mixture is carried out obtaining after the solid-liquid separation is flocculation agent.
The present invention compared with prior art has following advantage:
By adding the vitriol oil, can make the reaction of the vitriol oil and aluminium hydroxide generate basic aluminium sulphate and Tai-Ace S 150, they are all water-soluble, therefore the flocculation agent after the solid-liquid separation can be used for next sewage disposal, and solid mud can modification, and after aluminium hydroxide was separated from mud, mud became argillaceous by original glue, the dewatering plate junction phenomena can take place in mud under the tart condition, form fine particulate, free settling, the sludge volume after the sedimentation dwindles, moisture content reduces, and is convenient to burn processing.
Embodiment
A kind of method that from aluminium-containing sludge, reclaims flocculation agent, aluminium-containing sludge is positioned in the reactive tank, in aluminium-containing sludge, add the vitriol oil, the add-on of the described vitriol oil is by detecting pH value control, pH value is controlled between 3～5, the mixture that generates behind the stirring reaction comprises mud, aluminum salt solution at least, and the liquid that mixture is carried out obtaining after the solid-liquid separation is flocculation agent, and this flocculation agent can be used as the usefulness of managing sewage next time down.Solid part is a clay, and the concentration of the described vitriol oil is more than 92%.
Claims (2)
1, a kind of method that from aluminium-containing sludge, reclaims flocculation agent, it is characterized in that: aluminium-containing sludge is positioned in the reactive tank, in aluminium-containing sludge, add the vitriol oil, the add-on of the described vitriol oil is by detecting pH value control, pH value is controlled between 3～5, the mixture that generates behind the stirring reaction comprises mud, aluminum salt solution at least, and the liquid that mixture is carried out obtaining after the solid-liquid separation is flocculation agent.
2, the method that reclaims flocculation agent from aluminium-containing sludge according to claim 1, it is characterized in that: the concentration of the described vitriol oil is more than 92%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA031130739A CN1532148A (en) | 2003-03-25 | 2003-03-25 | Method for recovering coagulant from aluminium containing mud |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA031130739A CN1532148A (en) | 2003-03-25 | 2003-03-25 | Method for recovering coagulant from aluminium containing mud |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1532148A true CN1532148A (en) | 2004-09-29 |
Family
ID=34283714
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA031130739A Pending CN1532148A (en) | 2003-03-25 | 2003-03-25 | Method for recovering coagulant from aluminium containing mud |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1532148A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101979350A (en) * | 2010-11-01 | 2011-02-23 | 江苏宜净环保有限公司 | Physical and chemical sludge recycling and reducing method |
| CN102557367A (en) * | 2012-02-02 | 2012-07-11 | 南京大学 | Method for recycling and safely disposing aluminum-salt containing coagulated sludge |
| CN104944550A (en) * | 2015-06-10 | 2015-09-30 | 上海丰信环保科技有限公司 | Special flocculant synthesized by high-aluminium sludge in petrochemical industry and used for printing and dyeing wastewater reuse reverse osmosis membrane |
| CN106237980A (en) * | 2016-08-31 | 2016-12-21 | 广东慧信环保有限公司 | A kind of strong effective decoloring agent and preparation method thereof |
| CN108840534A (en) * | 2018-06-29 | 2018-11-20 | 浙江湖州金洁水务股份有限公司 | The method of aluminium processing enterprise waste sludge comprehensive utilization production water treatment agent aluminum sulfate |
| CN108892218A (en) * | 2018-07-27 | 2018-11-27 | 浙江湖州金洁水务股份有限公司 | A kind of sewage treatment process and system of low energy consumption |
| CN113044867A (en) * | 2019-12-27 | 2021-06-29 | 叶高浓 | Method for producing aluminum sulfate by using recovered waste |
-
2003
- 2003-03-25 CN CNA031130739A patent/CN1532148A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101979350A (en) * | 2010-11-01 | 2011-02-23 | 江苏宜净环保有限公司 | Physical and chemical sludge recycling and reducing method |
| CN101979350B (en) * | 2010-11-01 | 2012-07-11 | 江苏宜净环保有限公司 | Physical and chemical sludge recycling and reducing method |
| CN102557367A (en) * | 2012-02-02 | 2012-07-11 | 南京大学 | Method for recycling and safely disposing aluminum-salt containing coagulated sludge |
| CN102557367B (en) * | 2012-02-02 | 2013-07-03 | 南京大学 | Method for recycling and safely disposing aluminum-salt containing coagulated sludge |
| CN104944550A (en) * | 2015-06-10 | 2015-09-30 | 上海丰信环保科技有限公司 | Special flocculant synthesized by high-aluminium sludge in petrochemical industry and used for printing and dyeing wastewater reuse reverse osmosis membrane |
| CN104944550B (en) * | 2015-06-10 | 2017-01-25 | 上海丰信环保科技有限公司 | Special flocculant synthesized by high-aluminium sludge in petrochemical industry and used for printing and dyeing wastewater reuse reverse osmosis membrane |
| CN106237980A (en) * | 2016-08-31 | 2016-12-21 | 广东慧信环保有限公司 | A kind of strong effective decoloring agent and preparation method thereof |
| CN108840534A (en) * | 2018-06-29 | 2018-11-20 | 浙江湖州金洁水务股份有限公司 | The method of aluminium processing enterprise waste sludge comprehensive utilization production water treatment agent aluminum sulfate |
| CN108840534B (en) * | 2018-06-29 | 2019-04-12 | 浙江湖州金洁水务股份有限公司 | The method of aluminium processing enterprise waste sludge comprehensive utilization production water treatment agent aluminum sulfate |
| CN108892218A (en) * | 2018-07-27 | 2018-11-27 | 浙江湖州金洁水务股份有限公司 | A kind of sewage treatment process and system of low energy consumption |
| CN108892218B (en) * | 2018-07-27 | 2021-03-02 | 浙江湖州金洁水务股份有限公司 | Low-energy-consumption sewage treatment process and system |
| CN113044867A (en) * | 2019-12-27 | 2021-06-29 | 叶高浓 | Method for producing aluminum sulfate by using recovered waste |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |