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| Coagulation-flocculation Treatment of Wastewater from Reconstituted Tobacco Sheet Manufacturing by Papermaking Process |
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| DOI：10.11980/j.issn.0254-508X.2012.02.009 |
| Key Words:papermaking-reconstituted tobacco slice wastewater coagulation-flocculation polyaluminium chloride polyferric sulfate polyacrylamide |
| Fund Project:国家重点基础研究发展计划（973计划，2010CB732205）。 |
| Author Name | Affiliation | | 王玉峰1,2,3 | 1.华南理工大学制浆造纸工程国家重点实验室,广东广州，510640；2.华南理工大学植物资源化学与化工联合实验室, 广东广州，510640；3.广东省东莞市质量监督检测中心国家纸制品质量监督检验中心,广东东莞，523080 | | 陈克复1,2 | 1.华南理工大学制浆造纸工程国家重点实验室,广东广州，510640；2.华南理工大学植物资源化学与化工联合实验室, 广东广州，510640 | | 莫立焕1,2 | 1.华南理工大学制浆造纸工程国家重点实验室,广东广州，510640；2.华南理工大学植物资源化学与化工联合实验室, 广东广州，510640 | | 周志明1,2 | 1.华南理工大学制浆造纸工程国家重点实验室,广东广州，510640；2.华南理工大学植物资源化学与化工联合实验室, 广东广州，510640 |
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| Abstract:The coagulation-flocculation method was used for the treatment of waste water from reconstituted tobacco sheet manufacturing by papermaking process. polyaluminum chloride (PAC) and polyferric sulfate (PFS) were used as coagulants, four kinds of polyacrylamide were used as coagulant aids. The effects of three factors, i.e. the dosage of coagulants, the dosage of coagulant aids and pH on the treatment efficiency were evaluated. The efficiencies of PAC and PFS on COD removal, ammonia nitrogen removal and suspended solids (SS) removal were similar, but the efficiency of PAC on color removal was obviously higher. Cationic polyacrylamide PAM4 with very high molecular weight and low charge density coupled with PAC was found to give the highest coagulation-flocculation efficiency. At the optimum pH of 6.5, the optimum PAC dosage of 500 mg/L, and the optimum PAM4 dosage of 5 mg/L, COD removal was found to be 70.8%, ammonia nitrogen removal was 84.8%, color removal was 72.3%, and SS removal was 98.5%. The PAC-PAM4 system did not result in residual aluminum production, contrarily, and removed most of aluminum in the effluent. UV absorption spectra of treated wastewater showed that organic matter had been significantly removed. |
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