Effect of latex concentration in ABS resin wastewater on demulsification

被引：0

作者：

Luo M. ^{[1
,2
,3
]}

Song Y. ^{[2
,3
]}

Zheng S. ^{[2
,3
,4
]}

Zhou Y. ^{[2
,3
]}

He X. ^{[1
]}

机构：

[1] School of Chemical and Environmental Engineering, China University of Mining and Technology, Beijing

[2] Research Center of Water Pollution Control Technology, Chinese Research Academy of Environmental Sciences, Beijing

[3] State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing

[4] College of Water Sciences, Beijing Normal University, Beijing

来源：

Huagong Xuebao/CIESC Journal | 2016年 / 67卷 / 11期

关键词：

Colloid; Concentration; Demulsification; Dosage; Emulsions; Latex wastewater; Polymers;

D O I：

10.11949/j.issn.0438-1157.20160649

中图分类号：

学科分类号：

摘要：

The effect of latex concentration in ABS resin emulsion graft section wastewater on demulsification efficiency was investigated with PAC as demulsifier. The results indicated that there were optimized ranges of reagent dosage in different latex concentrations, as the undersize or oversize dosages could all lead to poor demulsification efficiency. When the latex COD concentration decreased from 13012 mg·L-1 to 192 mg·L-1, the optimized ranges of reagent dosage moved right, increasing from 6.1-10.8 mg·g-1 to 7.7-13.8 mg·g-1. The optimum COD removal efficiencies dropped from 99.30% to 91.24%. The optimum reagent dosages per latex COD unit increased by about 40%. The demulsification mechanism of latex wastewater by PAC was mainly adsorption-charge neutralization. With increase of PAC dosage, the colloid Zeta potential increased, and the latex could realize demulsification effectively in the range of -23-13 mV. © All Right Reserved.

引用

页码：4837 / 4842

页数：5

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