CN102815843B - Printing and dyeing wastewater decolorization treatment method - Google Patents

Printing and dyeing wastewater decolorization treatment method Download PDF

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CN102815843B
CN102815843B CN201210322887.7A CN201210322887A CN102815843B CN 102815843 B CN102815843 B CN 102815843B CN 201210322887 A CN201210322887 A CN 201210322887A CN 102815843 B CN102815843 B CN 102815843B
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tank
sewage
dyeing
treatment process
printing
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CN102815843A (en
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郑展望
胡志翔
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Zhe Jiang Shuangliang Sunda Environment Protection Co ltd
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ZHEJIANG SHANGDA ENVIRONMENTAL PROTECTION CO Ltd
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Abstract

The invention relates to printing and dyeing wastewater treatment and discloses a printing and dyeing wastewater decolorization treatment method. The method comprises the following specific steps: a. injecting printing and dyeing wastewater into a regulating tank for adsorption and decolorization treatment after the printing and dyeing wastewater passes through a fine screen and simultaneously injecting air into the regulating tank for aeration; b. injecting the wastewater subjected to adsorption treatment in the step a into a coagulative precipitation tank and throwing a coagulant into the coagulative precipitation tank for precipitation; c. injecting the wastewater subjected to precipitation treatment in the step b into an anaerobic hydrolysis tank and carrying out hydrolysis treatment under the anaerobic condition; d. injecting the wastewater subjected to hydrolysis treatment in the step c into an activated sludge aeration tank and injecting air into the activated sludge aeration tank to carry out aeration treatment under the aerobic condition; e. pumping the wastewater subjected to aeration treatment in the step d into a secondary precipitation tank for secondary precipitation; and f. discharging the effluent subjected to secondary precipitation in the step e to the outside. The method has the advantages of high decolorization efficiency, strong pertinency, low cost and high practical value.

Description

Dyeing sewage decoloration treatment process
Technical field
The present invention relates to dyeing and printing sewage processing, particularly a kind of dyeing sewage decoloration treatment process.
Background technology
Dyeing and printing sewage is the sewage that contains a large amount of dyestuffs that printing and dyeing mill produces in the dyeing course of processing.At present, the dyestuff 10-20% using in dyeing and printing process process can enter in waste water and discharge to the external world, and environment has been caused to very serious pollution.The water yield of the dyeing and printing sewage producing due to the printing dye operation of textile industry is larger, colourity is higher, complicated component, in waste water, contain fuel, slurry, auxiliary agent, acid, alkali, fiber impurity and various inorganic salt, wherein, amino-complex in dye structure and some metallic element thereof all have larger toxicity, can cause serious pollution to environment.
The decolouring of the dyestuffs such as the Methylene blue, magenta and the Victoria Green WPB that contain in existing dyeing and printing sewage is difficulty very.For these dyeing and printing sewages, existing dyeing and printing sewage treatment process can not be processed effectively to these dyeing and printing sewages.The discoloring agent that the existing dyeing and printing sewage treatment process of part is used is expensive, cannot adapt to existing dyeing and printing sewage processing.
Summary of the invention
The present invention is directed to existing dyeing and printing sewage treatment process decolorizing effect not good, the shortcoming that cost is higher, provides a kind of with low cost, the novel dyeing sewage decoloration treatment process of good decolorizing effect.
For achieving the above object, the present invention can take following technical proposals:
Dyeing sewage decoloration treatment process, the sewage disposal device using comprises equalizing tank, coagulative precipitation tank, anaerobic fixed film reactor, active sludge aeration tank, second pond; Described dyeing sewage decoloration treatment process comprises following concrete steps:
A. by dyeing and printing sewage by after fine fack, inject equalizing tank and carry out adsorption bleaching processing, carry out aeration to injecting air in equalizing tank simultaneously;
B. the sewage after adsorption treatment in step a is injected to coagulative precipitation tank, precipitate to dropping into coagulating agent in coagulative precipitation tank;
C. the sewage after precipitation process in step b is injected to anaerobic fixed film reactor, processing is under anaerobic hydrolyzed;
D. the sewage after hydrolysis treatment in step c is injected to active sludge aeration tank, carry out the Air Exposure under aerobic condition to injecting air in active sludge aeration tank;
E. the sewage after Air Exposure in steps d is passed into second pond and carry out secondary sedimentation;
F. in step e, the water outlet after secondary sedimentation is discharged to the external world;
Wherein, in step a, carry out the weight proportion of each composition in sorbing material that adsorption bleaching processing uses as follows:
Water-soluble binder 5-10%;
Wood sawdust 0-30%;
The mixture 10-15% of Pericarppium arachidis hypogaeae and corn cob;
Orange peel 0-5%;
Pomelo's skin 0-28%;
Yellow paper pulp 6-10%;
Discoloring agent 6-9%;
Aeration tank mud 1-4%;
Coal ash 0-30%.
As preferably, in described sorbing material, the weight proportion of each composition is:
Water-soluble binder 10%;
Wood sawdust 30%;
The mixture 13% of Pericarppium arachidis hypogaeae and corn cob;
Orange peel 5%;
Pomelo's skin 25%;
Yellow paper pulp 8%;
Discoloring agent 7%;
Aeration tank mud 2%.
As preferably, described sorbing material is the spherical sorbing material of diameter 50-70mm.
As preferably, the equalizing tank pond face of every 12m × 8m is thrown in 4000-5000 spherical sorbing material.
As preferably, the temperature of described equalizing tank is 15-38 DEG C, and pH value is adjusted to 5-6.
As preferably, be 14-16 days the duration of service of described sorbing material, the sorbing material centrifuge dehydration after use and dry after can recycle.
As preferably, in described dyeing and printing sewage, contain Methylene blue, magenta, Victoria Green WPB.
As preferably, the coagulating agent using in step b is PAM or PAC or iron(ic) chloride.
As preferably, the mud in described second pond is back to active sludge aeration tank by anaerobic fixed film reactor.
As preferably, the mud in described equalizing tank, coagulative precipitation tank and second pond after precipitation is cake outward transport processed after sheet frame dehydration.
The present invention, owing to having adopted above technical scheme, has significant technique effect:
Can remove targetedly the dyestuffs such as Methylene blue, magenta and Victoria Green WPB in sewage, decolorizing efficiency is high, is 92.3-94.71% to the percent of decolourization of Methylene blue, and the percent of decolourization of magenta is exceeded to 97.72%, percent of decolourization to Victoria Green WPB exceedes 96.84%, and overall percent of decolourization can reach 97.17%.With low cost, sewage cost per ton is about 0.08 yuan.
In the sorbing material using, contain aeration tank mud, can utilize fully the mud producing in active sludge aeration tank, reduced required sludge quantity to be processed of later stage, reduced sludge treatment expense.
Brief description of the drawings
Fig. 1 is the schematic flow sheet of dyeing sewage decoloration treatment process of the present invention.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail.
The water-soluble binder using in following examples is the weight ratio gelatine that is 1:2 and the mixture of carpenter's glue.The carpenter's glue using also can be replaced by white glue with vinyl.
The PAM using refers to polyacrylamide, and PAC is polymerize aluminum chloride.
The discoloring agent using is the BWD-01 high-efficiency decolorant purchased from Lan Bo chemical company.
The aeration tank mud that contains microorganism using is taken from active sludge aeration tank 4.The present invention carries out on improved basis existing activated sludge process, the improvement of carrying out for the dyeing and printing sewage that contains Methylene blue, magenta, Victoria Green WPB.While using Wastewater Treated by Activated Sludge Process dyeing and printing sewage, in aeration tank, can produce corresponding mud, these mud are pulled out from aeration tank, both can be used for described sorbing material; In addition, in the process of dyeing sewage decoloration treatment process of the present invention, also can be in active sludge aeration tank 4 kinds produce mud, these mud also can be for the preparation of described sorbing material.
Embodiment 1
Dyeing sewage decoloration treatment process, as shown in Figure 1, the sewage disposal device using comprises equalizing tank 1, coagulative precipitation tank 2, anaerobic fixed film reactor 3, active sludge aeration tank 4, second pond 5; Described dyeing sewage decoloration treatment process comprises following concrete steps:
A. the dyeing and printing sewage that contains Methylene blue, magenta, Victoria Green WPB is passed through after fine fack 6, inject equalizing tank 1 and carry out adsorption bleaching processing, when adsorption bleaching, use special sorbing material, in described sorbing material, contain water-soluble binder, it is the spherical of 50-70mm that sorbing material is made to diameter.The equalizing tank that is every 12m × 8m to the number of the sorbing material of throwing in equalizing tank 11 pond face is thrown in 4000-5000 above-mentioned spherical sorbing material, simultaneously carry out aeration to injecting air in equalizing tank 1, in order to ensure adsorption effect, while using above-mentioned sorbing material, the temperature that should keep equalizing tank 1 is 15-38 DEG C, pH value is adjusted to 5-6, be 14-16 days the duration of service of described sorbing material, use and after 14-16 days need sorbing material to salvage from equalizing tank 1, after carrying out centrifuge dehydration and drying, above-mentioned sorbing material can recycle;
B. the sewage after adsorption treatment in step a is injected to coagulative precipitation tank 2, precipitate to dropping into the coagulating agent such as PAM or PAC or iron(ic) chloride in coagulative precipitation tank 2;
C. the sewage after precipitation process in step b is injected to anaerobic fixed film reactor 3, processing is under anaerobic hydrolyzed;
D. the sewage after hydrolysis treatment in step c is injected to active sludge aeration tank 4, carry out the Air Exposure under aerobic condition to injecting air in active sludge aeration tank 4;
E. the sewage after Air Exposure in steps d is passed into second pond 5 and carry out secondary sedimentation, the mud in described second pond 5 is back to active sludge aeration tank 4 by anaerobic fixed film reactor 3, and the continuous circulation of above-mentioned sludge reflux process is carried out repeatedly;
F. in step e, the water outlet after secondary sedimentation has reached relevant emission standards, can discharge to the external world;
Wherein, in step a, carry out the weight proportion of each composition in sorbing material that adsorption treatment uses as follows:
Water-soluble binder 5-10%;
Wood sawdust 0-30%;
The mixture 10-15% of Pericarppium arachidis hypogaeae and corn cob;
Orange peel 0-5%;
Pomelo's skin 0-28%;
Yellow paper pulp 6-10%;
Discoloring agent 6-9%;
Aeration tank mud 1-4%;
Coal ash 0-30%.
By the cake outward transport processed after sheet frame dehydration of the mud after precipitation in described equalizing tank 1, coagulative precipitation tank 2 and second pond 5.
Simultaneous test
Now dyeing sewage decoloration treatment process described in embodiment 1 and existing dyeing sewage decoloration method are contrasted, result is as shown in the table:
Figure 2012103228877100002DEST_PATH_IMAGE001
* be the percent of decolourization of gained after employing prior art processing dyeing and printing sewage.
Percent of decolourization in upper table is respectively the percent of decolourization that dyeing and printing sewage uses Methylene blue after the countless decoloration treatment methods of printing and dyeing of the present invention, magenta, Victoria Green WPB, and the contained overall percent of decolourization of upper table is the pigment removal of above-mentioned dyeing and printing sewage entirety after decolouring is processed.As can be known from the above table, dyeing sewage decoloration treatment process of the present invention compared to existing technology, is that percent of decolourization or the overall percent of decolourization of specific pigment all has higher lifting.
In a word, the foregoing is only preferred embodiment of the present invention, all equalizations of doing according to the present patent application the scope of the claims change and modify, and all should belong to the covering scope of patent of the present invention.

Claims (9)

1. a dyeing sewage decoloration treatment process, is characterized in that, the sewage disposal device using comprises equalizing tank (1), coagulative precipitation tank (2), anaerobic fixed film reactor (3), active sludge aeration tank (4), second pond (5); Described dyeing sewage decoloration treatment process comprises following concrete steps:
A. dyeing and printing sewage is passed through after fine fack (6), inject equalizing tank (1) and carry out adsorption bleaching processing, carry out aeration to the middle air that injects of equalizing tank (1) simultaneously;
B. the sewage after adsorption treatment in step a is injected to coagulative precipitation tank (2), precipitate to the middle coagulating agent that drops into of coagulative precipitation tank (2);
C. the sewage after precipitation process in step b is injected to anaerobic fixed film reactor (3), processing is under anaerobic hydrolyzed;
D. the sewage after hydrolysis treatment in step c is injected to active sludge aeration tank (4), carry out the Air Exposure under aerobic condition to active sludge aeration tank (4) middle air that injects;
E. the sewage after Air Exposure in steps d is passed into second pond (5) and carry out secondary sedimentation;
F. in step e, the water outlet after secondary sedimentation is discharged to the external world;
Wherein, in step a, carry out the weight proportion of each composition in sorbing material that adsorption bleaching processing uses as follows:
Water-soluble binder 5-10%;
Wood sawdust 0-30%;
The mixture 10-15% of Pericarppium arachidis hypogaeae and corn cob;
Orange peel 0-5%;
Pomelo's skin 0-28%;
Yellow paper pulp 6-10%;
Discoloring agent 6-9%;
Aeration tank mud 1-4%;
Coal ash 0-30%;
In sorbing material, contain water-soluble binder, it is the spherical of 50-70mm that sorbing material is made to diameter.
2. dyeing sewage decoloration treatment process according to claim 1, is characterized in that, in described sorbing material, the weight proportion of each composition is:
Water-soluble binder 10%;
Wood sawdust 30%;
The mixture 13% of Pericarppium arachidis hypogaeae and corn cob;
Orange peel 5%;
Pomelo's skin 25%;
Yellow paper pulp 8%;
Discoloring agent 7%;
Aeration tank mud 2%.
3. dyeing sewage decoloration treatment process according to claim 1, is characterized in that, equalizing tank (1) the pond face of every 12m × 8m is thrown in 4000-5000 spherical sorbing material.
4. dyeing sewage decoloration treatment process according to claim 1, is characterized in that, the temperature of described equalizing tank (1) is 15-38 DEG C, and pH value is adjusted to 5-6.
5. dyeing sewage decoloration treatment process according to claim 1, is characterized in that, be 14-16 days the duration of service of described sorbing material, the sorbing material centrifuge dehydration after use and dry after recycle.
6. dyeing sewage decoloration treatment process according to claim 1, is characterized in that, contains Methylene blue, magenta, Victoria Green WPB in described dyeing and printing sewage.
7. dyeing sewage decoloration treatment process according to claim 1, is characterized in that, the coagulating agent using in step b is PAM or PAC or iron(ic) chloride.
8. dyeing sewage decoloration treatment process according to claim 1, is characterized in that, the mud in described second pond (5) is back to active sludge aeration tank (4) by anaerobic fixed film reactor (3).
9. dyeing sewage decoloration treatment process according to claim 8, is characterized in that, the mud in described equalizing tank (1), coagulative precipitation tank (2) and second pond (5) after precipitation is cake outward transport processed after sheet frame dehydration.
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CN103435221B (en) * 2013-08-16 2015-01-14 韩山师范学院 Integrated high-concentration ceramic printing wastewater treatment process
CN103523988A (en) * 2013-09-27 2014-01-22 昆山培新服装有限公司 Printing and dyeing wastewater treatment process
CN103964646B (en) * 2014-05-21 2015-08-19 南京大学 The method of a kind of anaerobic-aerobic-microbial flocculation intensive treatment waste water
CN104944680B (en) * 2015-05-20 2017-09-19 绍兴市力德助剂有限公司 A kind of handling process of printing and dyeing assistant sewage
CN104926033A (en) * 2015-06-11 2015-09-23 常熟新锦江印染有限公司 Efficient treatment method for printing and dyeing wastewater
CN105601029B (en) * 2015-12-17 2018-06-15 福建凤竹纺织科技股份有限公司 A kind for the treatment of process of dyeing waste water
CN105645672A (en) * 2015-12-31 2016-06-08 安徽省绿巨人环境技术有限公司 Device and method for treating alkaline wastewater
CN106630396A (en) * 2016-11-23 2017-05-10 武汉轻工大学 Simple process for treating wastewater containing various dyes
CN107365019A (en) * 2017-07-27 2017-11-21 张家港市双盈印染有限公司 A kind of processing method of cycling and reutilization dyeing and printing sewage
CN109231570A (en) * 2018-10-25 2019-01-18 刘慧� A kind of sewage treatment process of food and cultivation industry
CN109534547B (en) * 2018-12-14 2021-08-31 绍兴布泰纺织印染有限公司 Printing and dyeing wastewater treatment process
CN109879539A (en) * 2019-03-19 2019-06-14 绍兴金牡印染有限公司 A kind of waste water of basic printing and dyeing circular regeneration processing method
CN110697990A (en) * 2019-10-28 2020-01-17 深圳德蓝生态环境有限公司 Method for purifying sewage and reducing suspended matters in water body
CN111777280A (en) * 2020-07-20 2020-10-16 南通艾爽纺织有限公司 Sewage treatment process for printing and dyeing processing

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Address after: 310000 Xihu District, Hangzhou, Wen Wen Road No. 164, Hangzhou Institute of Commerce,, two

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