高效复合絮凝剂的研制与性能研究

Preparation of Efficient Complex Flucculant and Study on Its Characteristics

以酸洗废液和硅酸钠为原料,氯酸钾为氧化剂,加入少量的添加剂,制得高效无机高分子复合絮凝剂——聚合硫酸铁/聚硅酸复合絮凝剂。研究了其絮凝性能,考察了添加剂、聚铁与聚硅酸的混合比对其絮凝效果的影响以及该絮凝剂适用的pH范围。结果表明,使用该絮凝剂处理城市废水和长江水,絮体密实粗大,沉降速度快,余浊低。

Taking waste acid cleansing liquid and sodium silicate as raw material, and potassium chlorate as oxidant, and adding a few addition agent to prepare efficient complexflocculant——polyferric sulfate/polysilicic acid complexflocculant. Study on its flocculating characteristics, mixed ratio of polyferric sulfate, polysilicic acid and addition agent, its effect on flocculating efficiency and pH range of applying the flocculant have been conducted. The result showed that by using this flocculant to treat municipal sewage of River Yangtge water, the fluoccule were stout and big, speed of precipitation was fast and turbidity was lower.