Combining Coagulation Process with Biological Pretreatment for APMP effluents treatment
The moderate pollution load of APMP effluents provides a chance for a new treatment process--combination of biological pre-treatment and coagulation treatment.Biological pretreatment can reduce the pollution load and produce biomass at the same time.The removal of COD was 60.22％ and the yield of biomass was 7.12g/L at the optimized conditions treated by Aspergillus niger.And the removal of acid-soluble lignin and color were up to 60％ and 42.57％.The coagulation treatment was applied after bio-treatment by using alum and PAM as coagulation agent.The conditions of coagulation were optimized in this article.The optimized conditions were: Dosages of alum and PAM were 1000-1200mg/L and 2mg/L,pH is 5,stirring time is 30S at 300rpm,the temperature is 50℃.The coagulation removals of COD,color and turbidity were 83.80％,86.38％ and 98.33％.The removals of color were characterized by absorbance of 465nm,325nm,275nm and 254nm.
Biological Pretreatment APMP Effluents Coagulation Flocculation Aspergillus niger.
Tingzhi LIU Hongkai LI Weijiang DUAN Huiren HU
Tianjin University of Science & Technology,Tianjin Key Laboratory of Pulp & Paper,Tianjin,China,300457
国际会议
哈尔滨
英文
516-520
2010-07-24（万方平台首次上网日期，不代表论文的发表时间）