麦草Bio-CMP制浆废水高效处理技术  

Studies on Technology of Efficient Treatment of Wastewater from Bio-CMP Pulping of Wheat Straw

作　　者：路德胜 毕淑英 谢益民[1] LU Desheng;BI Shuying;XIE Yimin(Research Institute of Pulp&Paper Engineering,Hubei Univ.of Tech.,Wuhan 430068,China)

机构地区：[1]湖北工业大学制浆造纸研究院,湖北武汉430068

出　　处：《湖北工业大学学报》2022年第5期66-70,共5页Journal of Hubei University of Technology

基　　金：国家自然科学基金(21878070);湖北省高等学校优秀中青年科技创新团队计划项目(T201205)。

摘　　要：采用Al_(2)(SO_(4))_(3)和Ca(OH)_(2)组合絮凝体系联合曝气生物滤池(BAF)对麦草生物化学机械浆(Bio-CMP)制浆废水进行了处理。首先分析了其絮凝机理及影响絮凝效果的因素,结果表明:Al_(2)(SO_(4))_(3)和Ca(OH)_(2)用量分别为1 g/L和1.25 g/L,搅拌25 min,搅拌速率60 r/min,温度25℃,pH值7~8时,废水的絮凝处理效果最好。曝气生物滤池处理过程中,第7天时,固体菌S-1和液体菌L-1对废水的COD_(Cr)去除率最高,分别为74.6%和64.5%。经固体菌S-1处理后的废水COD_(Cr)为200 mg/L,达到了造纸厂废水回用的水平。The flocculation system of Al_(2)(SO_(4))_(3) and Ca(OH)_(2) was combined with biological aerated filter(BAF)to treat bio-CMP pulping wastewater from wheat straw.The flocculation mechanism and the factors related with the flocculation effect were investigated.The results showed that the optimal flocculation effect was obtained when the dosages of Al_(2)(SO_(4))_(3) and Ca(OH)_(2) were 1 g/L and 1.25 g/L respectively,with 25 min stirring time at 25℃,stirring rate of 60 r/min,and pH 7~8.In the process of biological aerated filter treatment,the COD_(Cr) removal rates of S-1 bacteria and L 1 bacteria to wastewater reached maxima on the 7th day,which were 74.6%and 64.5%,respectively.The COD_(Cr) of the effluent treated by S 1 bacteria was 200 mg/L,reaching the general reuse level for paper mill.

关 键 词：麦草 生物化机浆 制浆废水 絮凝 曝气生物滤池 

分 类 号：X793[环境科学与工程—环境工程]