盐析-冰冻法预处理高浓度酚醛树脂废水  

Pretreatment of high concentration phenolic resin wastewater by salting out-freezing method

作　　者：秦微[1] 谢陈鑫[1] 王震[1] 钱光磊[1] 李肖琳[1] 赵慧[1] 

机构地区：[1]中海油天津化工研究设计院有限公司,天津300131

出　　处：《环境工程学报》2016年第12期7099-7102,共4页Chinese Journal of Environmental Engineering

摘　　要：对于COD值为131 200 mg·L^(-1),苯酚浓度值为45 600 mg·L^(-1),甲醛浓度值为1 500 mg·L^(-1)的酚醛树脂废水,通过显微镜观察得知以苯酚为主的有机组分以稳定乳化状态存在。采用盐析-冰冻法对酚醛树脂废水进行破乳处理的实验研究表明,添加35%Na Cl、在-7℃条件下进行冰冻处理后,废水COD值和苯酚浓度值、甲醛浓度值分别降至28 720、6 310和1 359 mg·L^(-1),去除率分别为78.11%、86.16%和9.40%,实验证明盐析-冰冻法预处理酚醛树脂废水可行。A phenolic resin wastewater,with chemical oxygen demand（ COD）,phenol concentration,and formaldehyde concentration of 131 200,45 600,and 1 500 mg·L^-1,respectively. Through microscopic observation,it was found that the phenol-based organic matter exists in a stable emulsion state. The experiment,which adopted a salting out-freezing method,showed that it was feasible to break the emulsion of the phenolic resin wastewater by adding 35% Na Cl and freezing the resulting solution at-7 ℃. Under these conditions,the wastewater＇s COD,phenol concentration,and formaldehyde concentration decreased to 1 359,6 310,and28 720 mg·L^-1,respectively,with removal rates of 78. 11%,86. 16%,and 9. 40%.

关 键 词：酚醛树脂废水 盐析 冰冻 预处理 

分 类 号：X703[环境科学与工程—环境工程]