湿式氧化预处理对共代谢生物处理二甲基亚砜废水影响探究  

Effect of Wet Oxidation Pretreatment on Co-metabolism Biological Treatment of DMSO Wastewater

作　　者：陆志豪 谈娟娟 傅小飞 周成谦 庄思逸 LU Zhi-hao;TAN Juan-juan;FU Xiao-fei;ZHOU Cheng-qian;ZHUANG Si-yi(Jiangsu Lason Chemical Environmental Protection Co.,Ltd.,Yixing 214200,China)

机构地区：[1]江苏蓝必盛化工环保股份有限公司,江苏宜兴214200

出　　处：《精细化工中间体》2023年第6期67-73,共7页Fine Chemical Intermediates

摘　　要：对比了一步好氧共代谢生化工艺、厌氧-好氧共代谢生化工艺以及湿式氧化+好氧共代谢生化组合工艺对中高浓度二甲基亚砜(DMSO)模拟废水的处理效果,小试结果表明:3000 mg/L DMSO模拟废水(TOC为931 mg/L),仅通过共代谢生物处理,生化出水TOC最低为760 mg/L,且在生化出水中GC-MS图谱能检测出明显的DMSO特征峰;当DMSO模拟废水采用湿式过氧化氢氧化预处理,一方面使废水中的DMSO矿化率达到45%,另一方面废水中的特征污染物已转变为DMSO,组合工艺处理的最终出水TOC低至55~60 mg/L,DMSO的矿化率大大提升;当DMSO模拟废水的浓度提升至5000 mg/L(TOC为1464 mg/L)时,组合工艺处理的最终出水TOC为170 mg/L。研究结果表明,湿式过氧化氢氧化预处理对提升DMSO模拟废水处理效果具有显著的促进作用。A small-scale experimental study was conducted to compare the treatment effects of one-step aerobic co-metabolism biochemical process,anaerobic-aerobic co-metabolism biochemical process and wet oxidation+aerobic co-metabolism biochemical combined process on medium and high concentration DMSO simulated wastewater.The experimental results showed that the lowest TOC of biochemical effluent was 760 mg/L,and the DMSO Characteristic peaks could be detected in the GC-MS spectrum of biochemical effluent only through cometabolic biological treatment for 3000 mg/L DMSO simulated wastewater(TOC was 931 mg/L).When the DMSO simulated wastewater was pretreated with wet hydrogen peroxide oxidation,on the one hand,the mineralization rate of dimethyl sulfoxide in the wastewater reached 45%,on the other hand,the characteristic pollutants in the wastewater had been transformed into dimethyl sulfone.The final effluent TOC treated by the combined process was as low as 55~60 mg/L,and the mineralization rate of DMSO was greatly improved.When the concentration of DMSO simulated wastewater was increased to 5000 mg/L(TOC is 1464 mg/L),the final treated effluent TOC of the combined process treatment was 170 mg/L.The results showed that wet hydrogen peroxide oxidation pretreatment could greatly promote the efficiency of DMSO simulated wastewater treatment.

关 键 词：湿式氧化 过氧化氢 共代谢 二甲基亚砜 

分 类 号：X703.1[环境科学与工程—环境工程]