西北黄土塬地区集雨水的混凝沉淀优选试验研究

Experiment on the optimum conditions of coagulated deposition treatment for rainwater in the northwest Loess Plateau

文中主要对西北黄土塬地区集雨水进行了混凝沉淀优选实验。通过混凝形态学中絮凝体的分形维数确定适合西北黄土塬地区集雨水的混凝剂及其最佳投加量、最佳雨水的p H值和最佳慢速搅拌时间。实验结果表明：从混凝效果和经济角度分析,PAC为最适混凝剂,且其最佳投加量为30mg/L;在最佳混凝剂的最佳投加量下,原水p H值为6~8,搅拌时间为10min时处理效果最好。

Experiment for optimized the conditions of coagulated deposition treatment of rainwater for the north- west Loess Plateau was carried out by the Fractal dimension. The result showed that PAC is the optimum coagu- lant economically and effectively and the optimum quantity is 30mg/L; the optimum pH of the rainwater is 6 - 8 and the optimum agitation time is 10rain for 30mg/L of PAC.