【摘要】 用硅酸钠为原料制备活性硅酸，然后进行改性处理。用改性后的活性硅酸（ＰＳＡ）进行除浊、脱色试验，并对工厂废水、天然水体水样进行处理。对影响处理效果的ｐＨ、ＰＳＡ用量等进行试验。结果表明：改性活性硅酸在除浊、脱色、去除ＳＳ和ＣＯＤ方面均有良好效果，使用中ｐＨ适应范围宽，药剂用量少，絮体沉降性能好，是很有开发价值的新型无机絮凝剂。更多还原

【Abstract】 Dissimilatory activated silicic acid was used as flocculant for removing turbidity and colour from printing anddyeing wastes and in purification of raw water.Dosage of the flocculants and pH of the sample,that effect on theresults of treatment,was studied.It could be deduced that dissimilatory activated silicic acid is very effective for removing turbidity,colour,SS,COD and heavy metal ion in water and wastewater treaqtment更多还原