CN107512820A - The minimizing technology of antimony in a kind of dyeing waste water - Google Patents
The minimizing technology of antimony in a kind of dyeing waste water Download PDFInfo
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- CN107512820A CN107512820A CN201610423772.5A CN201610423772A CN107512820A CN 107512820 A CN107512820 A CN 107512820A CN 201610423772 A CN201610423772 A CN 201610423772A CN 107512820 A CN107512820 A CN 107512820A
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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
- C02F1/24—Treatment of water, waste water, or sewage by flotation
-
- 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
-
- 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
- C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
-
- 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
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/06—Controlling or monitoring parameters in water treatment pH
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/28—Anaerobic digestion processes
Abstract
The invention discloses a kind of minimizing technology of antimony in dyeing waste water, and excess acid, acid out processing are added to alkali decrement waste water and desized wastewater；Mixed after the adjusted pond processing of dyeing waste-water with the waste water after acid out processing, add polyiron sulfate, adjust pH value, be passed through flotation tank afterwards, reclaim scum silica frost；Liquid caustic soda is added into waste water, hydrolytic tank is passed through and acidification is hydrolyzed, collect waste gas, waste water continues to be passed through biochemistry pool；Enter second pond after biochemical treatment, the sludge reflux separated in second pond enters biochemistry pool, and the waste water of separation adds polyiron sulfate and adjusts pH value, is passed through three heavy ponds；Waste water through three heavy pond processing reaches emission request, is directly discharged to external environment or enters workshop recycling, sludge carries out burning disposal.This method separates high concentration stibium-containing wastewater, dual treatment, flocculant polyiron sulfate, and to antimony advantages of good adsorption effect, technique sets three heavy tank depths and removes antimony, and except antimony rate is up to 90%, while COD clearances are up to more than 90% in waste water.
Description
Technical field
The invention belongs to technical field of sewage, and in particular to metallic element in a kind of textile printing and dyeing wastewater
The minimizing technology of antimony.
Background technology
Antimony is both sexes rare metal, and antimony is present in various compound forms or with suspended state or with solubilised state
In water environment, research shows that antimony has chronic toxicity and carcinogenicity to biology and human body.Antimony pollution in environment
From artificial pollution and natural pollution, it is believed that the pollution mainly house refuse containing antimony, the powder of industrial operations
Dirt, waste water and waste residue etc.；Natural pollution refers mainly to be enriched with antimony area such as Near Antimony Mine Area, some hot springs and underground heat
The higher phenomenon of amount containing antimony of area surrounding environment caused by its special geological conditions.
Antimony is classified as top-priority pollution by EPA and European Union 1979 and 1976 respectively
Thing, the Japanese environmental sanitation Room are also classified as the pollutant of close attention.All antimony is formulated strictly countries in the world
Environmental standard.Germany's regulation human body is 23 μ gSb/d per per day suction antimony amount.European Union provides drinking water
The maximum acceptable concentration of middle antimony is 5 μ g/L.Japan is defined as 2 μ g/L.EPA is by drinking water
The MCLG (maximum contaminant level goal) and MCL (maximum of antimony
Contaminant level) value is set to 6 μ g/L.China《Water environment quality standard》
(GB3838-2002) and《Drinking Water hygienic practice》By antimony in (Ministry of Public Health, 2001)
Limit value be set to 5 μ g/L.《Water supply engineering plans specification》(GB50282-98) water factory's water outlet is provided
Middle antimony<10 μ g/L, while it further provides that antimony in drinking water source<50μg/L.
The polyester fiber of the whole world 90% adds antimony oxide, antimony acetate or second two in production at present
The catalyst that alcohol antimony reacts as fat polymerization.Antimony, which is remained, in dyeing course, in polyester fiber passes through alkali
The techniques such as decrement process, desizing, high temperature colouring are transferred in dyeing waste water.Environmental protection in April, 2015
Portion pair《Textile dyeing and finishing industrial water pollution thing discharge standard》(GB4287-2012) modification is made, is printed and dyed
Industry is taken over and the concentration of emission of in line waste water antimony is 100 μ g/L.The main source of antimony is in dyeing waste water
Polyester fiber Alkali reduction, refining are white, desizing, discharge in dyeing course, wherein decrement and desized wastewater
Middle total content is most, up to 1000 μ g/L, is about 200-300 μ g/L in dyeing waste-water.Not up to standard is useless
Water discharge seriously pollutes surface water and groundwater, and how to remove the antimony being deposited in dyeing waste water just turns into
Printing and dyeing enterprise urgent problem to be solved, at present textile industry still lack except the ideal method of antimony effect.
The content of the invention
The problem to be solved in the present invention is：A kind of minimizing technology of antimony in dyeing waste water is provided.
To solve the above problems, technical scheme provided by the invention is:The removal of antimony in a kind of dyeing waste water
Method, it comprises the following steps：
(1) alkali decrement waste water and desized wastewater add excess acid, adjust pH value, acid out processing；
(2) waste water after acid out processing mixes with dyeing waste-water in regulating reservoir, is added into composite waste
Polyiron sulfate, and pH value is adjusted, flotation tank is then passed to, reclaims scum silica frost；
(3) flotation tank processing is completed, and liquid caustic soda is added into waste water, hydrolytic tank is passed through and acidifying is hydrolyzed
Processing, waste gas is collected, waste water is continued to be passed through biochemistry pool；
(4) waste water after biochemistry pool is handled enters second pond, and the sludge reflux separated in second pond enters
Enter biochemistry pool, the waste water of separation adds polyiron sulfate, and adjusts pH value, then passes to three heavy ponds；
(5) waste water through three heavy ponds processing reaches emission request, is directly discharged to external environment or into car
Between recycle, sludge is filled or burning disposal.
Further, regulation pH value is 1.5~4 in step (1).
Further, regulation pH value is 3~6 in step (2).
Further, regulation pH value is 5~7 in step (4).
Further, it is preferred that regulation pH value is 2~3 in step (1).
Further, it is preferred that regulation pH value is 4.5~5.0 in step (2).
Further, it is preferred that regulation pH value is 6.2~6.5 in step (4).
Further, it is also added into polyacrylamide in composite waste in step (2).
Further, it is preferred that polyiron sulfate addition described in step (2) is composite waste quality
1‰-1.5‰。
Further, the waste water of separation is also added into polyacrylamide in step (4).
Further, polyiron sulfate addition is the 1.5 ‰ -3 ‰ of the wastewater quality of separation in step (4).
Further, it is preferred that it is sulfuric acid that acid is added in the step (1).
It is an advantage of the invention that:
1. the inventive method gives up Alkali reduction and the stibium-containing wastewater of desizing high concentration with dyeing low concentration containing antimony
Water is separated out to carry out dual treatment, with strong points, goes antimony efficiency high；Flocculant uses polyiron sulfate, its
There is higher adsorption-flocculation to act on Antimony in Waste Water；Antimony clearance reaches after acid out and air-flotation process
85%, this method further devises three heavy tank depth processing, and secondary addition polyiron sulfate flocculation adsorption is gone
Antimony, except antimony effect is good, clearance is up to 90%；This method also disposably eliminates COD in waste water simultaneously,
Clearance is up to more than 90%.
2. in traditional wastewater processing, the scum silica frost after acid out processing, need additional precipitation or airfloat equipment
The separation of sludge is carried out, the sludge corrosivity and viscosity are especially big, can be in sludge dewatering link to filter press
Cause to corrode, and the filter cloth of filter press is caused dirty stifled, this is that faced in traditional handicraft intractable is asked
Topic.Traditional thinking that the inventive method changes, sludge and waste water are together with dyeing waste-water after acid out processing
Air supporting after mixing, separation is completed in an air supporting or settling apparatus, technological process is shortened, reduces
Working strength, and cost is low, effect is good.
3. the equipment that this method is applied is the appliance arrangement of printing and dyeing mill or sewage treatment plant's routine,
It can be achieved by the reasonable setting to technological process, be easy to the popularization and application of this method, shop equipment is matched somebody with somebody
It is set to low.
Brief description of the drawings
Below in conjunction with the accompanying drawings and embodiment the invention will be further described
Fig. 1 is the minimizing technology process chart of antimony in dyeing waste water of the present invention.
Embodiment
Embodiment 1:In the present embodiment, the minimizing technology of antimony comprises the following steps in dyeing waste water：
(1) alkali decrement waste water and desized wastewater add excess sulfuric acid, and regulation pH value is 2, at acid out
Reason；Usual Alkali reduction and desized wastewater are in strong basicity, and COD accounts for dyeing waste water COD 50% or so, antimony
Content accounts for 70%.COD removes more than 90% in the step, and antimony removes 30% or so.
(2) waste water after acid out processing mixes with dyeing waste-water in regulating reservoir, is added into composite waste
Polyiron sulfate and polyacrylamide, bodied ferric sulfate addition is the 1.5 ‰ of wastewater quality, and adjusts PH
It is worth for 5.0, is passed through flotation tank afterwards, reclaims scum silica frost；COD clearances are up to 45% or so in the step,
Antimony clearance reaches 85% or so.
(3) flotation tank processing is completed, and liquid caustic soda is added into waste water, hydrolytic tank is passed through and acidifying is hydrolyzed
Processing, waste gas is collected, waste water is continued to be passed through biochemistry pool；
(4) waste water after biochemistry pool is handled enters second pond, and the sludge reflux separated in second pond enters
Enter biochemistry pool, repeat biochemical treatment, wherein the waste water separated adds polyiron sulfate and polyacrylamide,
Wherein polyiron sulfate addition is the 1.5 ‰ of separation wastewater quality, and adjusts pH value to 6.2, Ran Houtong
Enter three heavy ponds, carry out removing antimony advanced treating；
(5) waste water through three heavy ponds processing reaches emission request, is directly discharged to external environment or into car
Between recycle, sludge is filled or burning disposal.
Waste water after this method processing, its COD clearance are up to more than 90%, and antimony clearance is reachable
90%.COD concentration is stable low to 14 μ g/L in below 50mg/L, antimony content in usual processed waste water
Left and right, it is far below《Textile dyeing and finishing industrial water pollution thing discharge standard》(GB4287-2012) row of requirement
The μ g/L of limit value index 100 of metallic antimony in waste water are put, the waste water antimony content of the inventive method processing stably reaches
Mark, can be directly discharged to external environment.
Embodiment 2：In the present embodiment, the minimizing technology of antimony comprises the following steps in dyeing waste water：
(1) alkali decrement waste water and desized wastewater add excess sulfuric acid, and regulation pH value is 3, at acid out
Reason；Usual Alkali reduction and desized wastewater are generally in strong basicity, and COD accounts for dyeing waste water COD 50% or so,
Antimony content accounts for 70%.COD removes more than 90% in the step, and antimony removes 30% or so.
(2) waste water after acid out processing mixes with the dyeing waste-water in regulating reservoir, adds into composite waste
Enter polyiron sulfate and polyacrylamide, bodied ferric sulfate addition is the 1 ‰ of wastewater quality, and adjusts PH
It is worth for 4.5, is passed through flotation tank afterwards, reclaims scum silica frost；COD clearances are up to 45% or so in the step,
Antimony clearance reaches 85% or so.
(3) flotation tank processing is completed, and liquid caustic soda is added into waste water, hydrolytic tank is passed through and acidifying is hydrolyzed
Processing, waste gas is collected, waste water is continued to be passed through biochemistry pool；
(4) waste water after biochemistry pool is handled enters second pond, and the sludge reflux separated in second pond enters
Enter biochemistry pool, repeat biochemical treatment, wherein the waste water separated adds polyiron sulfate and polyacrylamide,
Wherein polyiron sulfate is the 3 ‰ of separation wastewater quality, and adjusts pH value to 6.5, then passes to three heavy ponds,
Carry out removing antimony advanced treating；
(5) waste water through three heavy ponds processing reaches emission request, is directly discharged to external environment or into car
Between recycle, sludge is filled or burning disposal.
Waste water after this method processing, its COD clearance is up to more than 90%, and antimony clearance is up to 90%.
COD concentration is in below 50mg/L, antimony content as little as 14 μ g/L or so in waste water.
Embodiment 3：In the present embodiment, the minimizing technology of antimony comprises the following steps in dyeing waste water：
(1) alkali decrement waste water and desized wastewater add excess sulfuric acid, and regulation pH value is 1.5, at acid out
Reason；Usual Alkali reduction and desized wastewater are generally in strong basicity, and COD accounts for dyeing waste water COD 50% or so,
Antimony content accounts for 70%.COD removes more than 90% in the step, and antimony removes 30% or so.
(2) waste water after acid out processing mixes with the dyeing waste-water in regulating reservoir, adds into composite waste
Enter polyiron sulfate and polyacrylamide, bodied ferric sulfate addition is the 1.2 ‰ of wastewater quality, and is adjusted
PH value is 3, is passed through flotation tank afterwards, reclaims scum silica frost；
(3) flotation tank processing is completed, and liquid caustic soda is added into waste water, hydrolytic tank is passed through and acidifying is hydrolyzed
Processing, waste gas is collected, waste water is continued to be passed through biochemistry pool；
(4) waste water after biochemistry pool is handled enters second pond, and the sludge reflux separated in second pond enters
Enter biochemistry pool, repeat biochemical treatment, wherein the waste water separated adds polyiron sulfate and polyacrylamide,
Wherein polyiron sulfate addition is the 2.0 ‰ of the wastewater quality of separation, and adjusts pH value to 7, Ran Houtong
Enter three heavy ponds, carry out removing antimony advanced treating；
(5) waste water through three heavy ponds processing reaches emission request, is directly discharged to external environment or into car
Between recycle, sludge is filled or burning disposal.
The waste water of this method processing, its COD clearance are up to 90%, and antimony content is far below《Weaving dye
Whole industrial water pollution thing discharge standard》(GB4287-2012) limit value of metallic antimony in waste discharge is required
The μ g/L of index 100, the waste water antimony content stably reaching standard of the inventive method processing, can be directly discharged to outer shroud
Border.
Embodiment 4：In the present embodiment, the minimizing technology of antimony comprises the following steps in dyeing waste water：
(1) alkali decrement waste water and desized wastewater add excess sulfuric acid, and regulation pH value is 4, at acid out
Reason；Usual Alkali reduction and desized wastewater are generally in strong basicity, and COD accounts for dyeing waste water COD 50% or so,
Antimony content accounts for 70%.COD removes more than 90% in the step, and antimony removes 30% or so.
(2) waste water after acid out processing mixes with the dyeing waste-water in regulating reservoir, into composite waste
Polyiron sulfate and polyacrylamide are added, bodied ferric sulfate addition is the 1.5 ‰ of wastewater quality, and is adjusted
It is 6 to save pH value, is passed through flotation tank afterwards, reclaims scum silica frost；
(3) flotation tank processing is completed, and liquid caustic soda is added into waste water, hydrolytic tank is passed through and acidifying is hydrolyzed
Processing, waste gas is collected, waste water is continued to be passed through biochemistry pool；
(4) waste water after biochemistry pool is handled enters second pond, and the sludge reflux separated in second pond enters
Enter biochemistry pool, repeat biochemical treatment, wherein the waste water separated adds polyiron sulfate and polyacrylamide,
Wherein polyiron sulfate addition is the 3 ‰ of the wastewater quality of separation, and adjusts pH value to 5, is then passed to
Three heavy ponds, carry out removing antimony advanced treating；
(5) waste water through three heavy ponds processing reaches emission request, is directly discharged to external environment or into car
Between recycle, sludge is filled or burning disposal.
The waste water of this method processing, its COD clearance are up to 90%, and antimony content is far below《Weaving dye
Whole industrial water pollution thing discharge standard》(GB4287-2012) limit value of metallic antimony in waste discharge is required
The μ g/L of index 100, the waste water antimony content stably reaching standard of the inventive method processing, can be directly discharged to outer shroud
Border.
The foregoing examples are merely illustrative of the technical concept and features of the invention, its object is to allow be familiar with this skill
The people of art is can to understand present disclosure and implement according to this, and the protection of the present invention can not be limited with this
Scope.All equivalent transformations done according to spirit of the invention or modification, it should all cover the present invention's
Within protection domain.
Claims (8)
1. the minimizing technology of antimony in a kind of dyeing waste water, it is characterised in that comprise the following steps：
(1) alkali decrement waste water and desized wastewater add excess acid, adjust pH value, carry out acid out processing；
(2) waste water after acid out processing mixes with dyeing waste-water in regulating reservoir, is added into composite waste
Polyiron sulfate, and pH value is adjusted, flotation tank is then passed to, reclaims scum silica frost；
(3) flotation tank processing is completed, and liquid caustic soda is added into waste water, hydrolytic tank is passed through and acidifying is hydrolyzed
Processing, waste gas is collected, waste water is continued to be passed through biochemistry pool；
(4) waste water enters second pond after biochemistry pool is handled, and the sludge reflux separated in second pond enters
Biochemistry pool, the waste water of separation adds polyiron sulfate, and adjusts pH value, subsequently into three heavy ponds；
(5) waste water through three heavy ponds processing reaches emission request, is directly discharged to external environment or into car
Between recycle, sludge is filled or burning disposal.
2. the minimizing technology of antimony in a kind of dyeing waste water according to claim 1, it is characterised in that
Regulation pH value is 1.5~4 in the step (1)；Regulation pH value is 3~6 in the step (2)；
Regulation pH value is 5~7 in the step (4).
3. the minimizing technology of antimony, its feature in a kind of dyeing waste water according to claim 1 or 2
It is, regulation pH value is 2~3 in the step (1)；Regulation pH value is in the step (2)
4.5~5.0；Regulation pH value is 6.2~6.5 in the step (4).
4. the minimizing technology of antimony in a kind of dyeing waste water according to claim 1, it is characterised in that
In the step (2) polyacrylamide is also added into composite waste.
5. the minimizing technology of antimony in a kind of dyeing waste water according to claim 1, it is characterised in that
Polyiron sulfate addition described in step (2) is the 1 ‰ -1.5 ‰ of composite waste quality.
6. the minimizing technology of antimony in a kind of dyeing waste water according to claim 1, it is characterised in that
The waste water of separation is also added into polyacrylamide in the step (4).
7. the minimizing technology of antimony in a kind of dyeing waste water according to claim 1, it is characterised in that
Polyiron sulfate addition is the 1.5 ‰ -3 ‰ of the wastewater quality of separation in the step (4).
8. the minimizing technology of antimony in a kind of dyeing waste water according to claim 1, it is characterised in that
It is sulfuric acid that acid is added in the step (1).
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| CN201610423772.5A CN107512820B (en) | 2016-06-16 | 2016-06-16 | Method for removing antimony in printing and dyeing wastewater |
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| CN201610423772.5A CN107512820B (en) | 2016-06-16 | 2016-06-16 | Method for removing antimony in printing and dyeing wastewater |
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Cited By (4)
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| CN108751611A (en) * | 2018-07-13 | 2018-11-06 | 苏州新工环境工程技术有限公司 | Efficient printing and dyeing wastewater treatment system and its processing method |
| CN108946873A (en) * | 2018-06-19 | 2018-12-07 | 苏州新能环境技术股份有限公司 | A kind of technique that embrane method processing alkali decrement waste water realizes lye reuse and antimony removal |
| CN109052731A (en) * | 2018-09-14 | 2018-12-21 | 杭州开源环保工程有限公司 | A method of efficiently removing antimony from dyeing waste water |
| CN109970278A (en) * | 2019-04-10 | 2019-07-05 | 浙江大学 | A kind of high-efficiency and economic removes the method and apparatus of antimony in dyeing waste water |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108946873A (en) * | 2018-06-19 | 2018-12-07 | 苏州新能环境技术股份有限公司 | A kind of technique that embrane method processing alkali decrement waste water realizes lye reuse and antimony removal |
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| CN108751611B (en) * | 2018-07-13 | 2024-04-12 | 苏州新工环境工程技术有限公司 | Efficient printing and dyeing wastewater treatment system and treatment method thereof |
| CN109052731A (en) * | 2018-09-14 | 2018-12-21 | 杭州开源环保工程有限公司 | A method of efficiently removing antimony from dyeing waste water |
| CN109052731B (en) * | 2018-09-14 | 2021-11-26 | 杭州开源环保工程有限公司 | Method for efficiently removing antimony from printing and dyeing wastewater |
| CN109970278A (en) * | 2019-04-10 | 2019-07-05 | 浙江大学 | A kind of high-efficiency and economic removes the method and apparatus of antimony in dyeing waste water |
| CN109970278B (en) * | 2019-04-10 | 2020-11-03 | 浙江大学 | Method and equipment for efficiently and economically removing antimony in printing and dyeing wastewater |
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| CN107512820B (en) | 2020-11-03 |
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