摘要
为了减少药剂用量,采用单因素试验优选法初步确定煤泥水沉降絮凝剂和无机凝聚剂合理的用量范围,在此基础上确定絮凝剂和无机凝聚剂两个因素的具体水平;以煤泥水初始沉降速度和上清液透光率为考察指标,利用正交试验方法对絮凝剂和无机凝聚剂用量配比进行了优化。结果表明,分子量为1 200万的聚丙烯酰胺(PAM)用量为6.8 g/m3,CaCl2用量为350g/m3时,可以取得很好效果,上清液透光率可达97.70%,初始沉降速度达22.32 cm/min。
In order to save the dosage of coagulants and flocculants,the proper quantity of coagulants and flocculants for flocculation of coal dressing wastewater was determined by using single factor experiment.Based on the results of experiment,the levels of coagulants and flocculants were determined.The experiment was conducted by orthogonal experiment in order to obtain optimal ratio of coagulants and flocculants based on the light transmission of the supernatant liquid and initial settling velocity.The results indicated that the dosage of polyacrylamide（PAM）,whose molecular weight is 12 million,is 6.8 g/m3 and calcium chloride is 350 g/m3,after treating the coal dressing wastewater,the light transmission of the supernatant liquid was nearly 97.70% and initial settling velocity was 22.32cm/min.
出处
《安徽理工大学学报（自然科学版）》
CAS
2010年第4期52-56,共5页
Journal of Anhui University of Science and Technology:Natural Science
基金
安徽省教育厅自然科学重点资助项目(KJ2009A016)
淮南市科技计划基金资助项目(2010A03103)
关键词
正交试验
煤泥水
絮凝剂
凝聚剂
絮凝沉降
orthogonal experiment
coal dressing wastewater
coagulants
flocculants
flocculation setting
