CN103523954A - Treatment method of active black dye wastewater - Google Patents
Treatment method of active black dye wastewater Download PDFInfo
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- CN103523954A CN103523954A CN201310475216.9A CN201310475216A CN103523954A CN 103523954 A CN103523954 A CN 103523954A CN 201310475216 A CN201310475216 A CN 201310475216A CN 103523954 A CN103523954 A CN 103523954A
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- Prior art keywords
- treatment method
- wastewater
- black dye
- active black
- stirring
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- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention relates to a wastewater treatment method, and discloses a treatment method of active black dye wastewater. The treatment method comprises the following steps: first adjusting the active black dye wastewater to be alkaline, then adding 0.6-2.0g / L of CaO powder with stirring, adding 1.2g / L of MgSO4.7H2O after the CaO powder is fully dissolved and dispersed evenly, stirring for a certain time, standing for solution layering, and then taking a supernatant. By using the treatment method, the wastewater decolorization rate reaches 99%, the COD removal rate reaches 95%, COD is reduced to less than 25mg / L, and meets first-class water quality requirements of the '' national integrated wastewater discharge standard''. The raw materials of CaO and MgSO4.7H20 are cheap and easy to get, so that the wastewater treatment cost is reduced greatly, and the treatment method has broad application prospects in industrial wastewater treatment.
Description
Technical field
The present invention relates to a kind for the treatment of process of waste water.
Background technology
It is the hot issue of chemical industry wastewater treatment that dyeing waste water is processed always.In numerous decoloring dye waste water treatment processs, flocculence is used widely because its investment cost is low, equipment takes up an area less, treatment capacity is large, percent of decolourization is high.Conventional flocculation agent has ferrous sulfate, iron trichloride, Tai-Ace S 150, polymerize aluminum chloride (PAC) and bodied ferric sulfate (PES) etc.Aluminium salt, Ferric Salt Flocculants are to hydrophobic dye decolorizing effect
Better, but acidity, reactive dyestuffs etc. are contained to azo bond and a plurality of sulfonic acid group water-soluble dye decolorizing effect is poor.Zhang Xianqiu etc. are to adopting magnesium iron composite flocculation agent treatment of dyeing and printing to be studied, and result shows that its COD clearance is not high.
Summary of the invention
The present invention aims to provide a kind ofly can effectively decolour and remove the method for the processing reactive black dye waste water of COD waste water.
The method of processing reactive black dye waste water of the present invention, comprising:
First reactive black dye waste water is adjusted to alkalescence, then adds while stirring 0.6-2.0 g/L CaO powder, until dissolving completely after being uniformly dispersed, add 1.2 g/L MgSO
47H
20, stir and standingly after certain hour after solution layering, to get supernatant liquid.
Use after method of the present invention, decolorization rate of wastewater reaches 99%, COD clearance and reaches 95%, COD and be down to below 25mg/L, reaches country's " integrated wastewater discharge standard " class water quality requirement.And CaO, MgSO
4, 7H
20 raw material is all cheap and easy to get, and cost for wastewater treatment is reduced greatly, in Industrial Wastewater Treatment, has broad application prospects.
Embodiment
Get reactive black dye waste water 100 mL, add NaOH to adjust pH to 13, under magnetic agitation, add 0.2 g CaO powder to dissolve completely after being uniformly dispersed and add 0.12 g MgSO until it
47H
20, stir and standingly after 30 minutes after solution layering, get supernatant liquid, on ultraviolet spectrophotometer, measure its absorbancy under 600 nm, according to the change calculations percent of decolourization of absorbancy, with potassium dichromate process, measure solution C OD, and according to the change calculations COD clearance of COD.
Recording percent of decolourization is that 99.3%, COD clearance is 95.1%.
Claims (1)
1. process a method for reactive black dye waste water, it is characterized in that comprising:
First reactive black dye waste water is adjusted to alkalescence, then adds while stirring 0.6-2.0 g/L CaO powder, until dissolving completely after being uniformly dispersed, add 1.2 g/L MgSO
47H
20, stir and standingly after certain hour after solution layering, to get supernatant liquid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310475216.9A CN103523954A (en) | 2013-10-13 | 2013-10-13 | Treatment method of active black dye wastewater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310475216.9A CN103523954A (en) | 2013-10-13 | 2013-10-13 | Treatment method of active black dye wastewater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103523954A true CN103523954A (en) | 2014-01-22 |
Family
ID=49926374
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310475216.9A Pending CN103523954A (en) | 2013-10-13 | 2013-10-13 | Treatment method of active black dye wastewater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103523954A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104291494A (en) * | 2014-10-29 | 2015-01-21 | 山东华亚环保科技有限公司 | Treatment process for textile wastewater |
| CN104724853A (en) * | 2015-03-08 | 2015-06-24 | 益阳市富晖制衣有限公司 | Clothing dyeing wastewater treatment process |
-
2013
- 2013-10-13 CN CN201310475216.9A patent/CN103523954A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104291494A (en) * | 2014-10-29 | 2015-01-21 | 山东华亚环保科技有限公司 | Treatment process for textile wastewater |
| CN104724853A (en) * | 2015-03-08 | 2015-06-24 | 益阳市富晖制衣有限公司 | Clothing dyeing wastewater treatment process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140122 |