CN104310631A - Treatment method of acid red dyeing wastewater - Google Patents
Treatment method of acid red dyeing wastewater Download PDFInfo
- Publication number
- CN104310631A CN104310631A CN201410516861.5A CN201410516861A CN104310631A CN 104310631 A CN104310631 A CN 104310631A CN 201410516861 A CN201410516861 A CN 201410516861A CN 104310631 A CN104310631 A CN 104310631A
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- CN
- China
- Prior art keywords
- treatment
- waste water
- red dyeing
- dyeing waste
- hydrogen peroxide
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- 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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Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/722—Oxidation by peroxides
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/30—Nature of the water, waste water, sewage or sludge to be treated from the textile industry
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
Abstract
The invention relates to a treatment method of acid red dyeing wastewater, belonging to the field of wastewater treatment methods. The treatment method comprises the following steps: filtering wastewater through a coarse grid, regulating the pH value to 8.5-9.5 with a sodium hydroxide solution, adding a polyaluminum sulfate flocculant, quickly stirring for 10 minutes, carrying out flocculating settling for 4-6 hours, adding pretreated fly ash into the wastewater subjected flocculating treatment, stirring at the rotation speed of 180 r/min for 3 hours, standing for 1 hour, filtering, regulating the pH value of the dyeing wastewater subjected to flocculation and fly ash treatment to 5.0, adding hydrogen peroxide and ferrous sulfate, and stirring to react for 1 hour, wherein the supernate is the discharged water which reaches the standard. In the treatment method, the acid red dyeing wastewater is pretreated by the polyaluminum sulfate flocculant, adsorbed by the fly ash and oxidized by the hydrogen peroxide and ferrous sulfate, so the treatment effect is obvious, the COD (chemical oxygen demand) removal ratio is higher than 97%, the chroma removal ratio is up to higher than 99%, and the treated discharged water satisfies the requirement of discharge after reaching the standard; and the method has the advantages of stable treatment effect and simple technique, is economical and reasonable, and can be widely popularized and applied.
Description
Technical field
The present invention relates to a kind for the treatment of process of Xylene Red dyeing waste water, belong to method of wastewater treatment field.
Background technology
The quantity discharged of current China waste water from dyestuff is quite large, the waste water from dyestuff of discharge has the comparatively large and feature of difficult degradation of colourity, COD, and severe contamination environment, having to pass through process up to standard could discharge, but it is up to standard to adopt common water treatment method to be difficult to.
Flyash is the trade waste of fuel-burning power plant and various coal firing boiler, not only take a large amount of arable lands, return air, water body causes pollution, flyash is a kind of high dispersing, particle diameter is 1-50 μm, primarily of the fine particle aggregate of silica glass ball composition, there is larger specific surface area, thus there is good adsorptive power.
Therefore, study a kind for the treatment of effect treatment process that is good, that run the Xylene Red dyeing waste water simple, cost is low and there is very high ecnomics and enviroment benefit.
Summary of the invention
The present invention aims to provide the treatment process that a kind for the treatment of effect is good, run the Xylene Red dyeing waste water simple, cost is low.
The treatment process of Xylene Red dyeing waste water of the present invention, comprises the following steps:
By waste water after coarse grid filters, regulate pH value to 8.5-9.5 with sodium hydroxide solution, add polyaluminum sulfate aluminium flocculating agent, after rapid stirring 10min, 4-6h after flocculating settling, to the waste water after flocculation treatment, add the flyash that pre-treatment is good, after stirring 3h with the rotating speed of 180r/min, leave standstill 1h, filter, by the dyeing waste water adjustment PH to 5.0 flocculated and after flyash process, add hydrogen peroxide and ferrous sulfate, stirring reaction 1h, supernatant liquor is the draining of process up to standard.
Preferably, polyaluminium sulfate flocculant usage of the present invention is 0.5g/L.
Preferred, the flyash consumption that pre-treatment of the present invention is good is 1.0g/L.
Preferred further, hydrogen peroxide use of the present invention is 100mg/L and ferrous sulfate consumption is 10mmol/L.
Further preferred, of the present invention is soak flyash pretreatment process with 20% sodium hydroxide solution, and boils 30min, is washed till neutrality, dries 2h after placing a night, for subsequent use.
In method of the present invention, Xylene Red dyeing waste water being processed, a large number of experiments show that the treatment effect of the Xylene Red waste water when adding 500mg/L polyaluminum sulfate aluminium flocculating agent in waste water is best, when flyash consumption is 1.0g, chroma removal rate rises mild, and chroma removal rate reaches 47.2%, and for making the mud of generation few as much as possible, the dosage of flyash is advisable with 1.0g/L, increase COD along with hydrogen peroxide use removes and takes the lead in increasing, then occur declining, increase again again, because when the concentration of hydrogen peroxide is lower, the concentration of hydrogen peroxide increases, the OH amount produced increases, when the excessive concentration of hydrogen peroxide, excessive hydrogen peroxide does not only produce more free radical by decomposing, reacting at the very start ferrous ion rapid oxidation iron ion on the contrary, both hydrogen peroxide was consumed, inhibit again the generation of OH, and its reductibility of excessive hydrogen peroxide adds the COD value of water outlet to a certain extent, when the concentration of hydrogen peroxide increases again, a large amount of iron ions forms ironic hydroxide, under the synergy of ironic hydroxide, COD clearance increases again, when concentration of hydrogen peroxide is 100mg/L, treatment effect is best, ferrous ion is the prerequisite that catalysis produces free radical, without under ferrous ion condition, hydrogen peroxide is difficult to decompose generation free radical, and when the concentration of ferrous ion is too low, generation and the speed of generation of free radical are all very little, degradation process is suppressed, when ferrous ion is excessive, its reduction hydrogen peroxide and autoxidation is iron ion consumes while medicament, adds effluent color dilution, therefore, ferrous ion concentration is advisable with 10mmol/L.
In treatment process of the present invention, for Xylene Red dyeing waste water, adopt the pre-treatment of polyaluminum sulfate aluminium flocculating agent, then use Powder ash adsorption, hydrogen peroxide+ferrous sulfate oxidation processes, treatment effect is obvious, and COD clearance reaches more than 97%, and chroma removal rate reaches more than 99%, draining after process meets qualified discharge requirement, and treatment effect is stable, economical rationality, technique is simple, can extensively promote the use of.
Embodiment
Embodiment one:
By waste water after coarse grid filters, regulate pH value to 8.5-9.5 with sodium hydroxide solution, add 0.10g/L polyaluminum sulfate aluminium flocculating agent, after rapid stirring 10min, 4-6h after flocculating settling, to the waste water after flocculation treatment, add flyash 1.0g/L, after stirring 3h with the rotating speed of 180r/min, leave standstill 1h, filter, by the dyeing waste water adjustment PH to 5.0 flocculated and after flyash process, add hydrogen peroxide 100mg/L and ferrous sulfate 10mmol/L, stirring reaction 1h, supernatant liquor is the draining of process up to standard.
Embodiment two: treatment effect
Use the treatment process of Xylene Red dyeing waste water of the present invention, process certain Xylene Red dyeing waste water, treatment effect as shown in Table-1.
From table-1, the COD clearance for the treatment of process of the present invention to Xylene Red dyeing waste water reaches more than 97%, and chroma removal rate reaches more than 99%, and the draining after process meets qualified discharge requirement.
Claims (5)
1. the treatment process of Xylene Red dyeing waste water, comprises the following steps:
By waste water after coarse grid filters, regulate pH value to 8.5-9.5 with sodium hydroxide solution, add polyaluminum sulfate aluminium flocculating agent, after rapid stirring 10min, 4-6h after flocculating settling, to the waste water after flocculation treatment, add the flyash that pre-treatment is good, after stirring 3h with the rotating speed of 180r/min, leave standstill 1h, filter, by the dyeing waste water adjustment PH to 5.0 flocculated and after flyash process, add hydrogen peroxide and ferrous sulfate, stirring reaction 1h, supernatant liquor is the draining of process up to standard.
2. the treatment process of Xylene Red dyeing waste water as claimed in claim 1, is characterized in that described polyaluminium sulfate flocculant usage is 0.5g/L.
3. the treatment process of Xylene Red dyeing waste water as claimed in claim 1, good flyash consumption is 1.0g/L to it is characterized in that described pre-treatment.
4. the treatment process of Xylene Red dyeing waste water as claimed in claim 1, is characterized in that described hydrogen peroxide use be 100mg/L and ferrous sulfate consumption is 10mmol/L.
5. the treatment process of Xylene Red dyeing waste water as claimed in claim 1, it is characterized in that described by flyash pretreatment process for soaking with 20% sodium hydroxide solution, and boil 30min, be washed till neutrality after placing a night, oven dry 2h, for subsequent use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410516861.5A CN104310631A (en) | 2014-09-30 | 2014-09-30 | Treatment method of acid red dyeing wastewater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410516861.5A CN104310631A (en) | 2014-09-30 | 2014-09-30 | Treatment method of acid red dyeing wastewater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104310631A true CN104310631A (en) | 2015-01-28 |
Family
ID=52365984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410516861.5A Pending CN104310631A (en) | 2014-09-30 | 2014-09-30 | Treatment method of acid red dyeing wastewater |
Country Status (1)
| Country | Link |
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| CN (1) | CN104310631A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105858951A (en) * | 2016-04-13 | 2016-08-17 | 东莞市联洲知识产权运营管理有限公司 | Efficient treating method for printing and dyeing wastewater |
| CN107913663A (en) * | 2017-11-03 | 2018-04-17 | 广东省资源综合利用研究所 | A kind of method that COD in beneficiation wastewater is removed using flyash |
| CN110642461A (en) * | 2019-09-23 | 2020-01-03 | 西南科技大学 | Alkali-activated leather-immobilized bacillus pumilus/H2O2Method for purifying printing and dyeing wastewater |
-
2014
- 2014-09-30 CN CN201410516861.5A patent/CN104310631A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105858951A (en) * | 2016-04-13 | 2016-08-17 | 东莞市联洲知识产权运营管理有限公司 | Efficient treating method for printing and dyeing wastewater |
| CN105858951B (en) * | 2016-04-13 | 2019-03-01 | 佛山市南海区今易德纺织有限公司 | A kind of high-efficient treatment method of dyeing waste water |
| CN107913663A (en) * | 2017-11-03 | 2018-04-17 | 广东省资源综合利用研究所 | A kind of method that COD in beneficiation wastewater is removed using flyash |
| CN110642461A (en) * | 2019-09-23 | 2020-01-03 | 西南科技大学 | Alkali-activated leather-immobilized bacillus pumilus/H2O2Method for purifying printing and dyeing wastewater |
| CN110642461B (en) * | 2019-09-23 | 2021-11-02 | 西南科技大学 | Alkali-activated leather-immobilized bacillus pumilus/H2O2Method for purifying printing and dyeing wastewater |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150128 |