EXPERIMENTAL STUDY ON PRETREATMENT OF YELLOW RIVER MICRO-POLLUTED RAW WATER QUALITY BY SUBSURFACE CONSTRUCTED WETLANDS

摘要

With the fast development of industry and agriculture around the Yellow River valley in recent years, the water quality of Yellow River is becoming more and more deteriorated. The raw water was mainly micro-polluted by organism, nitrogen and phosphorus. Most of the water supply comes from Yellow River as the foundation in Ji'nan city of Shandong province. The present drinking water treatment techniques cannot be competent for the treatment of current water from Yellow River. So we need further pretreatment of raw water.