Membrane treatment using ultrafiltration (UF) films with a molecular weight cut-off of 5000 Da could effectively remove colors from pulp mill and OCC mill effluents.

• 薄膜处理采用阻隔分子量5000之超过滤薄膜可由浆厂及工业纸厂废水中移除色质，滤液大体无色；部份色纸废水亦可以超过滤处理获得良好结果。