CN1663917A - Flocculant for purification of printing and dyeing wastewater - Google Patents
Flocculant for purification of printing and dyeing wastewater Download PDFInfo
- Publication number
- CN1663917A CN1663917A CN 200410016720 CN200410016720A CN1663917A CN 1663917 A CN1663917 A CN 1663917A CN 200410016720 CN200410016720 CN 200410016720 CN 200410016720 A CN200410016720 A CN 200410016720A CN 1663917 A CN1663917 A CN 1663917A
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- China
- Prior art keywords
- printing
- double salt
- purification
- flocculant
- dyeing wastewater
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Abstract
Disclosed is a flocculant for purification of printing and dyeing wastewater wherein the constituents include ferric sulfate (FeSO4), double salt and polyacrylamide. The flocculant has good effect for removing pollution components in various kinds of printing and dyeing wastewater, with the decolourization ratio of over 95% and the CoDcr clearance over 75%.
Description
Technical field
The present invention relates to a kind of treatment agent that is used to purify liquid waste, relate in particular to a kind of purification printing and dying industry wastewater flocculating agent.
Background technology
Dyeing waste water is a kind of trade effluent of serious environment pollution, and for this reason, existing many technology are used for treatment of dyeing and printing.At present, the flocculation agent that is used for treatment of dyeing wastewater is of a great variety, and as inorganic flocculating agents such as aluminum chloride, Tai-Ace S 150, ferrous sulfate, still, this class inorganic flocculating agent is big to decolorization of dyeing weak effect, sludge quantity, and treatment effect is undesirable.Therefore the urgent hope of dyeing can provide a kind of new flocculation agent.
Summary of the invention
The technical issues that need to address of the present invention are to disclose a kind of purification printing and dying industry wastewater flocculating agent, to overcome the minority defective that prior art exists, satisfy the needs of dyeing development.
The component of flocculation agent of the present invention and weight ratio are:
Ferrous sulfate (FeSO
4): double salt: polyacrylamide (PAM)
＝400～1200∶6～40∶1；
Preferred ratio is: ferrous sulfate: double salt: polyacrylamide=600: 20: 1.
Said double salt is a kind of ferrosilicoaluminum double salt, and its chemical general formula is: Al
3(SO
4)
2FeCl
2Na
2SiO
3(mixture of Tai-Ace S 150 iron protochloride water glass) is to make by 300 ℃～350 ℃ roastings.Main effect: fade, accelerate flocculation rate.
The said flocculation agent of the present invention can adopt mechanically mixing to form, and can adopt conventional method to make particulate state.
The present invention compared with prior art has following obvious advantage:
Preparation technology is simple, the starting material convenient sources, cost is low, and is effective, and sludge settling speed is fast, COD and chroma removal rate height, use range is wide, and is not only obvious to various treatment of dyeing wastewater effects, and can be applied to the purification of other trade effluents, can make the decolorizing printing and dyeing waste water rate greater than 95%, the CoDcr clearance is greater than 75%.Therefore, the present invention has great application value aspect the purifying treatment of dyeing waste water and other trade effluents.
Embodiment
Provide detail of the present invention below by description to examples of implementation.
Embodiment 1～6
Preparation method: with ferrous sulfate, double salt Al
3(SO
4)
2FeCl
2Na
2SiO
3And polyacrylamide places agitation vat to stir the mixture evenly according to the proportioning of following table, promptly obtains flocculation agent of the present invention.
Get the flocculation agent that drops into 9kg embodiment 1 in 15 tons of dyeing waste waters altogether, throw in that back waste water decolours rapidly, flocculation, sedimentation phenomenon.Adopt (GB601 chemical reagent, the titrimetry preparation of standardized solution; The preparation of standardized solution of GB602 chemical reagent, impurity determination; The preparation of standardized solution is done in GB603 chemical reagent, test determination; GB 692 pH value measuring methods) standard is carried out sampling analysis to it, and the result is as follows:
| Sequence number | The medicament title | The alumen ustum size | Settling time | COD clearance % | Chroma removal rate % |
| FeSO 4: PAM: double salt | |||||
| ????1 | ????400∶20∶1 | Bigger | ??10min | ????75.7 | ??81.4 |
| ????2 | ????600∶20∶1 | Bigger | ??7min | ????80.5 | ??95.0 |
| ????3 | ????800∶20∶1 | Bigger | ??9min | ????76.3 | ??83.6 |
| ????4 | ????600∶40∶1 | Bigger | ??8min | ????72.9 | ??86.1 |
| ????5 | ????600∶20∶3 | Bigger | ??8min | ????74.4 | ??82.7 |
| ????6 | ????600∶20∶0.5 | Bigger | ??8min | ????75.2 | ??81.9 |
Wherein: the chemical general formula of double salt is Al
3(SO
4)
2FeCl
2Na
2SiO
3
By table 1 as seen, flocculation agent preparation technology of the present invention is simple, the starting material convenient sources, and cost is low, and is effective, and sludge settling speed is fast, and COD and chroma removal rate height have the wide industrial application prospect.
Claims (3)
1. one kind purifies printing and dying industry wastewater flocculating agent, it is characterized in that component and weight ratio are:
Ferrous sulfate: double salt: polyacrylamide
＝400～1200∶6～40∶1；
Said double salt is ferrosilicoaluminum double salt.
2. purification printing and dying industry wastewater flocculating agent according to claim 1 is characterized in that, component and weight ratio are: ferrous sulfate: double salt: polyacrylamide=600: 20: 1.
3. purification printing and dying industry wastewater flocculating agent according to claim 1 and 2 is characterized in that the general structure of said ferrosilicoaluminum double salt is as follows: Al
3(SO
4)
2FeCl
2Na
2SiO
3
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410016720 CN1281516C (en) | 2004-03-04 | 2004-03-04 | Flocculant for purification of printing and dyeing wastewater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410016720 CN1281516C (en) | 2004-03-04 | 2004-03-04 | Flocculant for purification of printing and dyeing wastewater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1663917A true CN1663917A (en) | 2005-09-07 |
| CN1281516C CN1281516C (en) | 2006-10-25 |
Family
ID=35035258
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410016720 Expired - Fee Related CN1281516C (en) | 2004-03-04 | 2004-03-04 | Flocculant for purification of printing and dyeing wastewater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1281516C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100386267C (en) * | 2005-10-28 | 2008-05-07 | 上海工程技术大学 | High efficiency composite flocculant, its preparation method and application |
| CN101148282B (en) * | 2007-08-31 | 2012-09-26 | 乐昌市银星化工有限公司 | Waste acid modified discoloring agent |
| CN105948214A (en) * | 2016-06-28 | 2016-09-21 | 海安县中丽化工材料有限公司 | Decolorizing flocculant for printing and dyeing wastewater and preparation method of decolorizing flocculant |
-
2004
- 2004-03-04 CN CN 200410016720 patent/CN1281516C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100386267C (en) * | 2005-10-28 | 2008-05-07 | 上海工程技术大学 | High efficiency composite flocculant, its preparation method and application |
| CN101148282B (en) * | 2007-08-31 | 2012-09-26 | 乐昌市银星化工有限公司 | Waste acid modified discoloring agent |
| CN105948214A (en) * | 2016-06-28 | 2016-09-21 | 海安县中丽化工材料有限公司 | Decolorizing flocculant for printing and dyeing wastewater and preparation method of decolorizing flocculant |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1281516C (en) | 2006-10-25 |
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|---|---|---|---|
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20061025 |