CN102817278A - Method for papermaking by coating wastewater - Google Patents
Method for papermaking by coating wastewater Download PDFInfo
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- CN102817278A CN102817278A CN2011101536489A CN201110153648A CN102817278A CN 102817278 A CN102817278 A CN 102817278A CN 2011101536489 A CN2011101536489 A CN 2011101536489A CN 201110153648 A CN201110153648 A CN 201110153648A CN 102817278 A CN102817278 A CN 102817278A
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Abstract
A method for papermaking by paint wastewater includes a step of collecting and filtering coating wastewater to obtain filtrate containing solid content. The solid content comprises latex, starch and pigment. The filtrate and filling are added to flocculation modifier after being mixed to promote the filling, the starch, the pigment and the latex to flocculate, and accordingly recycling liquid is obtained. In addition, the recycling liquid is mixed with pulp for papermaking.
Description
Technical field
The present invention relates to the technological process of treating papermaking method, particularly a kind of method of utilizing the coating waste-water that produces in the papermaking to carry out papermaking.
Background technology
Along with industrial expansion, water for industrial use and discharged waste water are also increasing.A large amount of chemical substances in the waste water of discharging are brought serious pollution to environment, destroy the ecological balance, also people's life and the growth of plant are caused great harm.Especially in paper technology, carry out the paper kind and change and be coated with, switch, when shutting down, need clean the pipeline that residues in coating machine and the coating in the groove bucket, so, produce a large amount of waste water that contains coating, be designated hereinafter simply as coating waste-water.
Coating waste-water can not directly discharge, and common a kind of method of handling this coating waste-water is that solid content is wherein separated, and is used for power plant's calcining or buries processing, remaining liquid qualified discharge.Though the pollution that this processing method can avoid direct waste discharge that rivers and lakes are brought,, still can be dispersed into pollutant atmosphere in the air through the solid content of calcination processing, the solid content of burying processing causes soil compaction more easily.This processing method not only processing cost is high, and can not realize the making full use of of paint ingredient or water in the coating waste-water, causes the serious wasting of resources.Generally speaking, this processing method is unfavorable for reducing production costs, and also is unfavorable for protecting environment.
Summary of the invention
Therefore, be necessary to provide a kind of cost low, the eco-friendly method of utilizing coating waste-water to carry out papermaking.
A kind of method of utilizing coating waste-water to carry out papermaking comprises step: collect and the filtration coating waste-water, obtain filtrating, said filtrating is contained and is contained thing admittedly, and the said thing that contains admittedly comprises latex, starch and pigment; Said filtrating is mixed and add flocculation modifier carry out modification with filler, assemble to promote filler, starch, pigment and flocculating latex, thereby form reuse liquid; And said reuse liquid mixed with paper pulp and manufacture paper with pulp.
The method of utilizing coating waste-water to carry out papermaking provided by the invention reclaims coating waste-water and is used for manufacturing paper with pulp of paper, the thinned water amount that can practice thrift paper making wet part greatly.Latex in the coating waste-water etc. contains admittedly and can combine to be reused with paper pulp, can further promote the gained strength of paper.
Description of drawings
Fig. 1 flow chart that utilizes coating waste-water to carry out the method for papermaking provided by the invention.
The specific embodiment
Below will combine accompanying drawing and embodiment, the method for utilizing coating waste-water to carry out papermaking provided by the invention will be elaborated.
The first step is collected and the filtration coating waste-water, obtains filtrating, and said filtrating is contained and contained thing admittedly, and the said thing that contains admittedly comprises latex, starch and pigment.
Said coating waste-water is embodied as the waste water that produces in the cleaning process from coating machine.The said thing that contains admittedly also possibly comprise additive.
Certainly, said coating waste-water also can be other waste water that produces from the processes such as coating material production, storage, conveying, coating.
Particularly, filter said coating waste-water and comprise and earlier screen out impurity further screens out impurity again with pressurized screen step with vibrating screen, wherein, vibrating screen mainly can screen out the impurity of big particle diameter, like the hard foreign matter etc.
In the resulting filtrating, solid content is 3% to 15%.In the present embodiment, solid content is about 5% in the filtrating.Said containing admittedly in the thing, the mass content of latex is 4% to 7%, and the mass content of starch is 2% to 5%, and the mass content of pigment is 70% to 80%, and the mass content of additive is 6% to 10%.
Certainly, after obtaining filtrating, can also in said filtrating, add bactericide, so that said filtrating is carried out sterilization processing.Adopt reduced form bactericide or oxidative bactericide all can.In the present embodiment, adopt the hypochlorous acid series bactericidal agent.
In addition, can also in said filtrating, add antifoaming agent, so that said filtrating is carried out defoaming treatment.In the present embodiment, the antifoaming agent that adopts BASF AG to provide.
The sequencing that is appreciated that above-mentioned sterilization processing and defoaming treatment is also unrestricted, also can disposablely in filtrating, add above-mentioned two kinds of reagent, carries out sterilization processing and defoaming treatment simultaneously.
Second step, said filtrating is mixed and add flocculation modifier carry out modification with filler, assemble to promote filler, starch, pigment and flocculating latex, thereby form reuse liquid.
In the present embodiment, said filler is about 19% solution for the calcium carbonate mass content.After the filtrating mixing, the calcium carbonate mass content is about 15%.
Said flocculation modifier can be molecular weight at 3,000,000 to 5,000,000 amphoteric macromolecule polymer, specifically can be embodied as polyacrylamide derivative.The consumption of said flocculation modifier is 1 kilogram of oven dry stock to 6 per ton kilogram oven dry stock per ton.In the present embodiment, the consumption of flocculation modifier is 2 kilograms of oven dry stocks per ton.
When utilizing said flocculation modifier that said filler and filtrating are carried out modification, it is electrical that flocculation modifier is given filler, starch, pigment and latex, impels filler, starch, pigment and flocculating latex to assemble.Because the particle of latex is less, the particle of filler, starch and pigment is bigger, and after flocculation was assembled, filler, starch and pigment were coated on around the latex.
In the 3rd step, said reuse liquid is mixed with paper pulp and manufactures paper with pulp.
Process of manufacturing paper with pulp said reuse liquid and mixing of paper pulp and general paper making process is roughly the same.Before said reuse liquid and mixing of paper pulp were manufactured paper with pulp, slurry also can experience wet end process steps such as defibrination.Because when manufacturing paper with pulp, except filler can combine with fiber in the slurrying, the latex in the reuse liquid, starch and pigment also can combine with the fiber in the paper pulp, can further promote the gained strength of paper.
The present invention reclaims coating waste-water and is used for manufacturing paper with pulp of paper, the thinned water amount that can practice thrift paper making wet part greatly.Latex in the coating waste-water etc. contains admittedly and can combine to be reused with paper pulp, can further promote the gained strength of paper.
It is understandable that, for the person of ordinary skill of the art, can make other various corresponding changes and distortion by technical conceive according to the present invention, and all these change the protection domain that all should belong to claim of the present invention with distortion.
Claims (11)
1. method of utilizing coating waste-water to carry out papermaking comprises step:
Collect and the filtration coating waste-water, obtain filtrating, said filtrating is contained and is contained thing admittedly, and the said thing that contains admittedly comprises latex, starch and pigment;
Said filtrating is mixed and add flocculation modifier carry out modification with filler, assemble to promote filler, starch, pigment and flocculating latex, thereby form reuse liquid; And
Said reuse liquid is mixed with paper pulp and manufactures paper with pulp.
2. the method for utilizing coating waste-water to carry out papermaking as claimed in claim 1 is characterized in that, the solid content of gained filtrating is 3% to 15%.
3. the method for utilizing coating waste-water to carry out papermaking as claimed in claim 1 is characterized in that, the solid content of gained filtrating is 5%.
4. the method for utilizing coating waste-water to carry out papermaking as claimed in claim 1 is characterized in that, filters said coating waste-water and comprises that elder generation screens out impurity further screens out impurity again with pressurized screen step with vibrating screen.
5. the method for utilizing coating waste-water to carry out papermaking as claimed in claim 1 is characterized in that, before obtaining the filtrating back, carrying out modification, also in said filtrating, adds bactericide, so that said filtrating is carried out sterilization processing.
6. the method for utilizing coating waste-water to carry out papermaking as claimed in claim 5 is characterized in that, said bactericide is the hypochlorous acid series bactericidal agent.
7. the method for utilizing coating waste-water to carry out papermaking as claimed in claim 5 is characterized in that, before obtaining the filtrating back, carrying out modification, also in said filtrating, adds antifoaming agent, so that said filtrating is carried out defoaming treatment.
8. the method for utilizing coating waste-water to carry out papermaking as claimed in claim 1 is characterized in that, the consumption of said flocculation modifier is 1 kilogram of oven dry stock to 6 per ton kilogram oven dry stock per ton.
9. the method for utilizing coating waste-water to carry out papermaking as claimed in claim 1 is characterized in that, the consumption of said flocculation modifier is 2 kilograms of oven dry stocks per ton.
10. the method for utilizing coating waste-water to carry out papermaking as claimed in claim 1 is characterized in that, said flocculation modifier is amphoteric macromolecule polymer, and the molecular weight of said amphoteric macromolecule polymer is 3,000,000 to 5,000,000.
11. the method for utilizing coating waste-water to carry out papermaking as claimed in claim 10 is characterized in that, said flocculation modifier is polyacrylamide derivative.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110153648.9A CN102817278B (en) | 2011-06-09 | 2011-06-09 | Method for papermaking by coating wastewater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110153648.9A CN102817278B (en) | 2011-06-09 | 2011-06-09 | Method for papermaking by coating wastewater |
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| Publication Number | Publication Date |
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| CN102817278A true CN102817278A (en) | 2012-12-12 |
| CN102817278B CN102817278B (en) | 2014-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110153648.9A Expired - Fee Related CN102817278B (en) | 2011-06-09 | 2011-06-09 | Method for papermaking by coating wastewater |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103343480A (en) * | 2013-07-02 | 2013-10-09 | 金东纸业（江苏）股份有限公司 | Modified packing and preparation method thereof as well as papermaking technology adopting modified packing and paper |
| CN104074094A (en) * | 2014-06-18 | 2014-10-01 | 东莞玖龙纸业有限公司 | Coating wastewater recovery process and system |
| CN104230036A (en) * | 2013-06-11 | 2014-12-24 | 金东纸业（江苏）股份有限公司 | Recycling technology of paint wastewater |
| CN105735024A (en) * | 2016-02-22 | 2016-07-06 | 金东纸业（江苏）股份有限公司 | Treatment method for coating waste water and coating broke |
| CN107445220A (en) * | 2017-08-22 | 2017-12-08 | 山东华泰纸业股份有限公司 | A kind of comprehensive utilization technique of art paper coating waste-water |
| CN112374633A (en) * | 2020-09-08 | 2021-02-19 | 金东纸业（江苏）股份有限公司 | Method and system for recycling coating wastewater |
| CN114890573A (en) * | 2022-04-25 | 2022-08-12 | 维苏威铸造科技(江苏)有限公司 | Environment-friendly casting coating cleaning waste recycling process |
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|---|---|---|---|---|
| CN1146515A (en) * | 1995-09-27 | 1997-04-02 | 徐功明 | Non drainage quality-stabilizing regulating agent for paper-making and application thereof |
| CN100410192C (en) * | 2006-09-11 | 2008-08-13 | 金东纸业（江苏）股份有限公司 | Method for circulation utilizing coating waste-water |
| CN101367589A (en) * | 2008-08-29 | 2009-02-18 | 北京盖雅技术中心有限公司 | Reutilization process for painting and coating pigment pf paper mill |
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2011
- 2011-06-09 CN CN201110153648.9A patent/CN102817278B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1146515A (en) * | 1995-09-27 | 1997-04-02 | 徐功明 | Non drainage quality-stabilizing regulating agent for paper-making and application thereof |
| CN100410192C (en) * | 2006-09-11 | 2008-08-13 | 金东纸业（江苏）股份有限公司 | Method for circulation utilizing coating waste-water |
| CN101367589A (en) * | 2008-08-29 | 2009-02-18 | 北京盖雅技术中心有限公司 | Reutilization process for painting and coating pigment pf paper mill |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104230036A (en) * | 2013-06-11 | 2014-12-24 | 金东纸业（江苏）股份有限公司 | Recycling technology of paint wastewater |
| CN104230036B (en) * | 2013-06-11 | 2016-12-28 | 金东纸业（江苏）股份有限公司 | The recycling technique of coating waste-water |
| CN103343480A (en) * | 2013-07-02 | 2013-10-09 | 金东纸业（江苏）股份有限公司 | Modified packing and preparation method thereof as well as papermaking technology adopting modified packing and paper |
| CN103343480B (en) * | 2013-07-02 | 2016-06-01 | 金东纸业（江苏）股份有限公司 | Modified filler and its preparation method, apply its paper technology and paper |
| CN104074094A (en) * | 2014-06-18 | 2014-10-01 | 东莞玖龙纸业有限公司 | Coating wastewater recovery process and system |
| CN105735024A (en) * | 2016-02-22 | 2016-07-06 | 金东纸业（江苏）股份有限公司 | Treatment method for coating waste water and coating broke |
| CN105735024B (en) * | 2016-02-22 | 2018-01-09 | 金东纸业（江苏）股份有限公司 | The processing method of coating waste-water and coated broke |
| CN107445220A (en) * | 2017-08-22 | 2017-12-08 | 山东华泰纸业股份有限公司 | A kind of comprehensive utilization technique of art paper coating waste-water |
| CN107445220B (en) * | 2017-08-22 | 2020-10-02 | 山东华泰纸业股份有限公司 | Application of coated paper coating wastewater |
| CN112374633A (en) * | 2020-09-08 | 2021-02-19 | 金东纸业（江苏）股份有限公司 | Method and system for recycling coating wastewater |
| CN114890573A (en) * | 2022-04-25 | 2022-08-12 | 维苏威铸造科技(江苏)有限公司 | Environment-friendly casting coating cleaning waste recycling process |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102817278B (en) | 2014-12-24 |
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