小型CAF气浮设备处理滇池含藻水的试验研究

采用自制的小型涡凹型气浮(CAF)设备处理滇池含藻水,结果表明,在气浮时间为1min,分离时间为6min的条件下,聚硅硫酸铁铝(PFASSI)用量为40mg/L时,对藻类和浊度的净化效率最大分别为801%和786%;在聚丙烯酰胺(PAM)的用量为2mg/L时,对藻类和浊度的净化效率分别为959%和932%。使用PFASSI(20mg/L)和PAM(1mg/L)的组合絮凝剂时,滇池含藻水的含藻量由557mg/L降到557mg/L,浊度由375度降到27度,二者的去除率分别为99%和928%。

Study on water with alga of Dianchi Lake treated by CAF equipment

In this paper, the test result of the water with alga of Dianchi Lake treated by a miniature CAF flotation equipment is introduced. When the consumption of PFASSI is 40 mg/L, the purification efficiency of alga and turbidity are 80.1% and 78.6%, respectively. When the consumption of PAM is 2 mg/L, the purification efficiency of alga and turbidity are 95.9% and 93.2%, respectively. When the combination flocculant is used (the consumptions of PFASSI and PAM are 20 mg/L and 1 mg/L, respectively) , the alga quantity and turbidity are from 557 mg/L to 5.57 mg/L and from 375 degree to 27 drgree, respectively , and the purification efficiencies of alga and turbidity are 99% and 92.8%, respectively. After being treated by the CAF cell, the alga and turbidity in the water of Dianchi lake are removed efficiently.