CN105174548A - Method for treating PVA containing desizing waste water - Google Patents
Method for treating PVA containing desizing waste water Download PDFInfo
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- CN105174548A CN105174548A CN201510624323.2A CN201510624323A CN105174548A CN 105174548 A CN105174548 A CN 105174548A CN 201510624323 A CN201510624323 A CN 201510624323A CN 105174548 A CN105174548 A CN 105174548A
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- pva
- waste water
- borax
- desizing waste
- desized wastewater
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- Separation Using Semi-Permeable Membranes (AREA)
- Filtering Materials (AREA)
- Biological Treatment Of Waste Water (AREA)
Abstract
The invention provides a method for treating PVA containing desizing waste water. The method is characterized by comprising the following steps that 1, borax is added to the PVA containing textile desizing waste water with the PVA concentration of 1,000 mg/L to 30,000 mg/L and the pH value of 6-9, and the concentration of the borax ranges from 0.8 g/L to 2 g/L; 2, after the borax is completely dissolved, a strong cationic auxiliary is added to the desizing waste water to generate PVA flocculent sediment; 3, the sediment is filtered out. The method is used for treating the PVA containing desizing waste water, the operation process is simple, the PVA removing speed is high, the PVA removing rate is high, subsequent sewage treatment, especially serialization treatment is rarely influenced, and the method is an ideal desizing waste water PVA removing process.
Description
Technical field
The invention provides a kind for the treatment of process containing PVA desized wastewater, belong to textile sewage processing technology field.
Background technology
Carried out a lot of research to the process containing PVA waste water both at home and abroad, treatment process is divided into two large classes substantially: physico-chemical process and biochemical process.Physico-chemical process mainly contains membrane sepn, saltouts, the technology such as oxidizing.Biochemical process often adopts activated sludge process, utilizes the metabolism of microorganism, by being separated the biological reinforcing technology of efficient PVA degradation bacteria, and degraded PVA.Biochemical process process PVA waste water, length consuming time of degrading, poor processing effect; Though embrane method is easy and simple to handle, consume energy low, fouling membrane is serious, and film imported component price is expensive; The running cost of high-level oxidation technology is too high, is difficult to industrially promote the use of; Though employing is saltoutd, absorption method can make resource rational utilization, but after saltouing, because salt content is very high in water, when entering biological treatment structures, can be directed at microorganism cells dehydration, biological activity declines, even completely lose, microbial film bulk comes off, and salt bleed can not be carried out a biological disposal upon separately, need first take measures to reduce salt density.
Summary of the invention
The invention provides and a kind ofly can overcome the excellent treatment process containing PVA desized wastewater of above-mentioned defect, technique effect.Its technical scheme is:
Containing the treatment process of PVA desized wastewater, it is characterized in that adopting following steps: 1) be 1000 ~ 30000mg/L containing PVA concentration, pH value is in the weaving desized wastewater of 6 ~ 9, add borax, make the concentration of borax be 0.8 ~ 2g/L; 2) after borax dissolves completely, add in strong cation auxiliary agent to desized wastewater and produce PVA flocks; 3) filtering-depositing.
Described a kind for the treatment of process containing PVA desized wastewater, step 2) in strong cation auxiliary agent be the one of polyurethane/cationic, cationic fixing agent.
Compared with prior art, tool has the following advantages in the present invention: operating procedure is simple, and remove PVA speed fast, PVA clearance is high, on follow-up sewage disposal particularly seriation process almost do not affect, be that a kind of desirable PVA removes technique.
Embodiment
Embodiment 1: strong cation auxiliary agent adopts solid content to be the cationic fixing agent of 30%.The steps include:
1) get 1 liter and contain the weaving desized wastewater that PVA concentration is 2542mg/L, pH value is 7.2, add 0.8g borax;
2) after borax dissolves completely, add 1.2g solid content be 30% cationic fixing agent FSN (production of Tianjin Hong Liyuan Trade Co., Ltd.) to desized wastewater, produce PVA flocks;
3) filtering-depositing.
After testing, after process, in desized wastewater, PVA content is 243mg/L, PVA clearance is 90.4%.
Embodiment 2: strong cation auxiliary agent adopt solid content be 50% polyurethane/cationic EPJ ?DA (Hangzhou Yinhu Chemical Co., Ltd's production).The steps include:
1) get 1 liter and contain the weaving desized wastewater that PVA concentration is 18425mg/L, pH value is 8, add 1.6g borax;
2) after borax dissolves completely, add 3.2g solid content be 50% polyurethane/cationic to desized wastewater, produce PVA flocks;
3) filtering-depositing.
After testing, after process, in desized wastewater, PVA content is 2416mg/L, PVA clearance is 86.8%.
Embodiment 3: strong cation auxiliary agent employing solid content is the cationic fixing agent FA ?R (production of Zibo Lu Rui Fine Chemical Co., Ltd) of 50%.The steps include:
1) get 1 liter and contain the weaving desized wastewater that PVA concentration is 30000mg/L, pH value is 6.5, add 2.0g borax;
2) after borax dissolves completely, add 4.5g solid content be 50% cationic fixing agent to desized wastewater, produce PVA flocks;
3) filtering-depositing.
After testing, after process, in desized wastewater, PVA content is 2543mg/L, PVA clearance is 91.52%.
Embodiment 4: strong cation auxiliary agent employing solid content is the polyurethane/cationic (bio tech ltd produced in Zhejiang Xin Hai days) of 20%.The steps include:
1) get 1 liter and contain the weaving desized wastewater that PVA concentration is 1000mg/L, pH value is 6.8, add 0.8g borax;
2) after borax dissolves completely, add 0.9g solid content be 20% polyurethane/cationic to desized wastewater, produce PVA flocks;
3) filtering-depositing.
After testing, after process, in desized wastewater, PVA content is 98mg/L, PVA clearance is 90.2%.
Claims (2)
1., containing the treatment process of PVA desized wastewater, it is characterized in that adopting following steps: 1) be 1000 ~ 30000mg/L containing PVA concentration, pH value is in the weaving desized wastewater of 6 ~ 9, add borax, make the concentration of borax be 0.8 ~ 2g/L; 2) after borax dissolves completely, add in strong cation auxiliary agent to desized wastewater and produce PVA flocks; 3) filtering-depositing.
2. the treatment process containing PVA desized wastewater according to claim 1, is characterized in that: step 2) in strong cation auxiliary agent be the one of polyurethane/cationic, cationic fixing agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510624323.2A CN105174548A (en) | 2015-09-25 | 2015-09-25 | Method for treating PVA containing desizing waste water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510624323.2A CN105174548A (en) | 2015-09-25 | 2015-09-25 | Method for treating PVA containing desizing waste water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105174548A true CN105174548A (en) | 2015-12-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510624323.2A Pending CN105174548A (en) | 2015-09-25 | 2015-09-25 | Method for treating PVA containing desizing waste water |
Country Status (1)
| Country | Link |
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| CN (1) | CN105174548A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105540796A (en) * | 2016-01-21 | 2016-05-04 | 苏州印丝特纺织数码科技有限公司 | PVA wastewater treating agent for spinning sizing and preparation method thereof |
| CN111099758A (en) * | 2018-10-25 | 2020-05-05 | 中国石油化工股份有限公司 | Polyvinyl alcohol wastewater treatment system and method |
| CN111661907A (en) * | 2020-07-16 | 2020-09-15 | 河北和悦环保科技有限公司 | Treatment method of PVA wastewater from papermaking |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102363543A (en) * | 2011-09-15 | 2012-02-29 | 桐乡市健民过滤材料有限公司 | Method for processing wastewater with high content polyvinyl alcohol |
| CN102659267A (en) * | 2012-05-25 | 2012-09-12 | 广东溢达纺织有限公司 | Removing method of PVA (polyvinyl acetate) in desizing wastewater and device |
-
2015
- 2015-09-25 CN CN201510624323.2A patent/CN105174548A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102363543A (en) * | 2011-09-15 | 2012-02-29 | 桐乡市健民过滤材料有限公司 | Method for processing wastewater with high content polyvinyl alcohol |
| CN102659267A (en) * | 2012-05-25 | 2012-09-12 | 广东溢达纺织有限公司 | Removing method of PVA (polyvinyl acetate) in desizing wastewater and device |
Non-Patent Citations (2)
| Title |
|---|
| 刘明华: "《水处理化学品》", 31 January 2010, 化学工业出版社 * |
| 胡岳华: "《矿物浮选》", 31 March 2014, 中南大学出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105540796A (en) * | 2016-01-21 | 2016-05-04 | 苏州印丝特纺织数码科技有限公司 | PVA wastewater treating agent for spinning sizing and preparation method thereof |
| CN111099758A (en) * | 2018-10-25 | 2020-05-05 | 中国石油化工股份有限公司 | Polyvinyl alcohol wastewater treatment system and method |
| CN111661907A (en) * | 2020-07-16 | 2020-09-15 | 河北和悦环保科技有限公司 | Treatment method of PVA wastewater from papermaking |
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Application publication date: 20151223 |
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| RJ01 | Rejection of invention patent application after publication |