
膜技术在化工废水处理中的应用
Application of membrane technology in chemical wastewater treatment
Song Weijie、Hang Xiaofeng and Wan Yinhua
针对化工生产过程中产生的含有多种可回收成分(多元醇、多元酸、酯类、无机盐)的废水,分别设计和开发了汽提-膜分离-精馏耦合、多级膜浓缩、渗透汽化-精馏等集成工艺。通过膜集成过程与化工生产过程的结合,可以有效地降低废水中的化学需氧量(COD),并实现废水中可回收成分的资源化利用,降低化工废水处理的综合成本,对化工产业的可持续发展具有积极意义。
Several processes by integrating with membrane systems such as stripping-membrane-distillation, multiple stage membrane concentration, pervaporation- distillation, etc. were designed and developed to treat chemical wastewater containing valuable components(e.g., polyol, polybasic acid, ester, inorganic salt). The combination of the integrated processes with the chemical production processes can effectively reduce COD in the treated wastewater and realize the recovery of the valuable components in chemical wastewater, and consequently decrease the cost of wastewater treatment. Therefore, application of these processes could be helpful for the sustainable development of chemical industry.
integrated membrane technology / chemical wastewater / resource recovery / water reuse[收稿日期] 2014-09-25
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