【摘要】 聚合硫酸铝，聚合硫酸铁，以及更为复杂的聚合硫酸铝铁作混凝剂处理ＣＯＤ为３０００ｍｇ／Ｌ、ＳＳ为３００ｍｇ／Ｌ左右的印染废水的最佳工艺条件是：ｐＨ范围为７．０～９．５；搅拌速度为１８０ｒ／ｍｉｎ，一次处理混凝剂投加量为 ３００ｍｇ／Ｌ，沉降时间为 １５ｍｉｎ，ＣＯＤ去除率在８０％左右．若再经双层滤料柱进行过滤处理，效果更好，能达到排放标准．更多还原

【Abstract】 The best operational conditions of treating printing & dyeing wastewater with composite coagulant (PAS, PFS and PAFS) was studied. The initial COD and suspended substance (SS) was about 3 000 mg/L and 300 mg/L, the optimum dosage of coagulant was 300 mg/L and the pH was 7.0 ~9.5. COD and SS removal rate around 80% and 95%. If followed by double layer filtering media, the method could meet the requirements of the GB8978 - 1996 wastewater draining standards.更多还原