ABS树脂废水胶乳浓度对破乳的影响

doi:10.11949/j.issn.0438-1157.20160649

化工学报 ›› 2016, Vol. 67 ›› Issue (11): 4837-4842.DOI: 10.11949/j.issn.0438-1157.20160649

ABS树脂废水胶乳浓度对破乳的影响

罗梦^1,2,3, 宋玉栋^2,3, 郑盛之^2,3,4, 周岳溪^2,3, 何绪文¹

1 中国矿业大学(北京)化学与环境工程学院, 北京 100083;
2 中国环境科学研究院水污染控制技术研究中心, 北京 100012;
3 中国环境科学研究院环境基准与风险评估国家重点实验室, 北京 100012;
4 北京师范大学水科学研究院, 北京 100875

收稿日期:2016-05-11 修回日期:2016-07-25 出版日期:2016-11-05 发布日期:2016-11-05
通讯作者: 周岳溪,zhouyuexi@263.net
基金资助:
国家水体污染控制与治理科技重大专项资助项目（2012ZX07201-005）。

Effect of latex concentration in ABS resin wastewater on demulsification

LUO Meng^1,2,3, SONG Yudong^2,3, ZHENG Shengzhi^2,3,4, ZHOU Yuexi^2,3, HE Xuwen¹

1 School of Chemical and Environmental Engineering, China University of Mining and Technology, Beijing 100083, China;
2 Research Center of Water Pollution Control Technology, Chinese Research Academy of Environmental Sciences, Beijing 100012, China;
3 State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China;
4 College of Water Sciences, Beijing Normal University, Beijing 100875, China

Received:2016-05-11 Revised:2016-07-25 Online:2016-11-05 Published:2016-11-05

摘要/Abstract

摘要：

以ABS树脂接枝聚合工段废水为研究对象，聚合氯化铝（PAC）为破乳剂，考察了胶乳浓度对破乳效果的影响。结果表明，不同胶乳浓度下均存在优化的药剂投加量区间，投加量过小或过大均会造成破乳效果不佳。随着胶乳COD浓度由13012 mg·L^-1下降至192 mg·L^-1，单位胶乳COD的优化药剂投加量由6.1~10.8 mg·g^-1增加至7.7~13.8 mg·g^-1，区间向右移动，最佳COD去除率由99.30%下降至91.24%。稀释前后最优单位胶乳COD的药剂投加量提高了40%左右。PAC对ABS树脂废水胶乳的破乳机理以吸附-电性中和为主，随着PAC投加量的增加，胶粒Zeta电位逐渐升高，Zeta电位在-23~13 mV范围内，胶乳可有效破乳。

关键词: 胶乳废水, 破乳, 浓度, 投加量, 聚合物, 胶体, 乳液

Abstract:

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.

Key words: latex wastewater, demulsification, concentration, dosage, polymers, colloid, emulsions

中图分类号:

X783.2

罗梦, 宋玉栋, 郑盛之, 周岳溪, 何绪文. ABS树脂废水胶乳浓度对破乳的影响[J]. 化工学报, 2016, 67(11): 4837-4842.

LUO Meng, SONG Yudong, ZHENG Shengzhi, ZHOU Yuexi, HE Xuwen. Effect of latex concentration in ABS resin wastewater on demulsification[J]. CIESC Journal, 2016, 67(11): 4837-4842.

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ABS树脂废水胶乳浓度对破乳的影响

Effect of latex concentration in ABS resin wastewater on demulsification

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