关键词: 煤化工, 膜处理, 预处理

Abstract: Zero sewage discharge is imperative in coal chemical industry. Membrane treatment process is a mature one in zero discharge of coal chemical wastewater. However, membrane fouling is a relatively main factor which restricts the application of membrane treatment process. Reasonable selection of pretreatment for membrane treatment is an effective way to reduce membrane fouling. Taking a coal chemical recycling water treatment as an example, this paper analyzes the pretreatment process of double membrane (ultrafiltration + reverse osmosis) and discusses the selection of membrane pretreatment process.

Key words: coal chemical industry, membrane treatment, pretreatment