用电厂粉煤灰处理中药废水  

Wastewater Treatment of Chinese Traditional Medicine Plant by Power Plant Fly-ash

作　　者：张晓文[1,2] 杜欣[1] 李启成[1] 周耀辉[1] 林琼[1] 

机构地区：[1]南华大学城市建设学院,湖南衡阳421001 [2]湖南大学化学化工学院,湖南长沙410082

出　　处：《环境科技》2009年第1期27-29,共3页Environmental Science and Technology

基　　金：衡阳市科技计划项目(2005KG01-020)

摘　　要：针对耒阳电厂粉煤灰和中药厂排出废水的特点,考查了粉煤灰的投加量、颗粒度、改性剂、搅拌吸附时间和pH值等因素对处理效果的影响。用改性后的粉煤灰进行了L9(34)正交实验,根据实验结果,确定了适合的条件为:每升废水中投加粉煤灰90g,在pH值=7.5时搅拌45min,沉淀35min。在此实验条件下,CODCr,色度,浊度的去除率分别为84.2%,83.2%,79.2%。Several effect factors, such as the dosing quantity, fly-ash granularity, modified reagent, stirring time and pH have been investigated on the treatment efficiency according to the feature of fly-ash from Leiyang power plant and the chinese traditional medicine plant effluent. We have got the optimal conditions of dosing quantity of 90 g/L modified fly-ash, stirring time of 45 minutes, at pH=7.5 and 35 minutes sedimentation by L9 （34）orthogonal experiments. The removed rate of CODCr, colourity degree and turbidity degree are 84.2%, 83.2% and 79.2% respectively.

关 键 词：粉煤灰 中药废水 改性 CODCR 

分 类 号：X7[环境科学与工程—环境工程]