餐厨垃圾醇基燃料渗透分离膜污染机理及控制研究

Study on Fouling Mechanism and Control of Membrane for Kithchen Waste Alcohol Based Fuel

渗透膜污染是制约膜应用的瓶颈,餐厨垃圾发酵废液成分复杂,呈酸性,有机物质浓度高,高氮磷,高盐度,有机成分以芳香蛋白质、糖类、溶解性微生物副产物为主,废液中含有极少量的类腐殖酸及类富里酸。本文从餐厨垃圾发酵废液主要成分出发,在蛋白质、糖类、溶解性微生物产物和腐殖酸几方面探讨了餐厨垃圾醇基燃料渗透分离膜的污染机理,并在机理的基础上,从膜改性、阻垢剂和膜清洗三方面总结了膜污染控制的方法。

Membrane fouling is one of the most serious obstacle to restrict its widespread application. The kitchen fermentation wastewater has complicated composition, it is acidic, and has high organic matter concentration, nitrogen, phosphorus and salinity. Its organic ingredients contain aromatic protein, carbohydrate, soluble microbial, small amount of humic acid and fulvic acid. The fouling mechanism from the main component of kitchen waste fermentation liquor includes protein, carbohydrates, soluble microbial products and humic acid was discussed. And the methods to control membrane fouling from membrane modification, scale inhibitor and membrane cleaning were summarized.