高盐高COD化工中间体生产废水处理工艺研究  

Study on the Treatment Technology of High Salt and COD Chemical Intermediate Production Wastewater

作　　者：王付杉 邢玉雷 吕宏卿 钟云龙 李露 WANG FU-shan;XING Yu-lei;LV Hong-qing;ZHONG Yun-long;LI Lu(Institute of Seawater Desalination and Multipurpose Utilization〈Tianjin〉,MNR,Tianjin 300192,China)

机构地区：[1]自然资源部天津海水淡化与综合利用研究所,天津300192

出　　处：《盐科学与化工》2022年第6期20-23,共4页Journal of Salt Science and Chemical Industry

基　　金：山东省重大科技创新工程项目(2019JZZY010805);天津市科技支撑计划重点项目(19YFZCSF00760)。

摘　　要：文章选择1-氰乙酰基-3-乙基脲化工中间体生产废水,根据其高盐高COD特征,提出“电渗析分离浓缩+高级氧化除COD+蒸发结晶脱盐”的处理工艺进行无害化处理,并进行实验研究以验证工艺可行性。实验结果表明,电渗析可以将废水含盐量降低90%,有效分离废水中无机盐和有机COD;高级氧化可以有效降解废水中70%以上的难降解有机物,满足后续可生化性要求;蒸发结晶过程稳定,结晶出盐状况良好,具备可行性。In this article,1-cyanoacetyl 3-ethylurea chemical intermediate production wastewater was selected.According to its characteristics of high salinity and COD,the treatment process of“electrodialysis separation and concentration+advanced oxidation COD removal+evaporative crystallization desalination”was put forward for harmless treatment,and experimental study was carried out to verify the feasibility of the process.The experimental results show that electrodialysis can reduce the salt content of wastewater by 90%,and effectively separate inorganic salts and organic COD from wastewater;Advanced oxidation can effectively degrade more than 70%of the refractory organic compounds in wastewater,and meet the requirements of subsequent biodegradability;The evaporative crystallization process is stable,and the crystallization of salt is in good condition and feasible.

关 键 词：高盐高COD 废水 电渗析 高级氧化 蒸发结晶 

分 类 号：X703.1[环境科学与工程—环境工程]