聚铁与聚铝联用处理草浆造纸中段废水的研究  

Study on the Treatment of Wastewater from Straw Pulping Process by Using both PFS and PAC

作　　者：杨宇[1] 刘锐 朱勇强[3] 刘德永[1] 易玉林[1] 丁国际[1] 

机构地区：[1]上海大学环境与化学工程学院,上海200072 [2]浙江清华长三角研究院生态环境研究所,浙江嘉兴314006 [3]上海上大玲珀化工科技有限公司,上海200072

出　　处：《中北大学学报（自然科学版）》2011年第4期490-495,共6页Journal of North University of China(Natural Science Edition)

基　　金：上海市重点学科第3期建设项目(S30109);浙江省省长基金资助项目(2007C18002)

摘　　要：针对草浆造纸中段废水的特性,提出了联合使用混凝剂聚合硫酸铁(聚铁)和聚合氯化铝(聚铝)的处理工艺.结果表明:与单独使用聚铁或聚铝相比,聚铁和聚铝联用可提高对COD、浊度和色度的净化效果.投加助凝剂聚丙烯酰胺明显加大了絮体沉降速度,在一定的程度上减少了絮体发生量.聚铁、聚铝和聚丙烯酰胺联用工艺在最佳的工艺条件下对浊度、色度和COD分别为107 NTU和3570倍和1550 mg·L-1的原水的处理率分别达到了97.3%,96.6%和82.1%.Based on characteristic of wastewater from straw pulping process,the process of treating the wastewater by using both polyferric sulphate（PFS） and polyaluminum chloride（PAC） as coagulant was sugested.The results show that the removal rates of COD,turbidity and color are increased by using both PFS and PAC,compared with by using single PFS or PAC.It is clear that using polyacrylamide（PAM）as flocculant when using PFS and PAC can speed up settling rate and reduce the volume of floc to a certain.The wastewater with 107 NTU of turbidity,3 570 dilution ration of color and 1 550 mg·L-1 of COD was treated by using PFS,PAC and PAM under the optimal process condition,and the removal rates of turbidity,color and COD reached 97.3%,96.6% and 82.1% respectively.

关 键 词：造纸中段废水 絮凝 聚合硫酸铁 聚合氯化铝 聚丙烯酰胺 

分 类 号：X703.5[环境科学与工程—环境工程]