中国造纸学报2024，Vol.39Issue(1)：38-46,9.DOI:10.11981/j.issn.1000-6842.2024.01.38
絮凝沉淀与生物曝气滤池结合处理杨木心材生物化学机械法制浆废水
Study on the Treatment of Wastewater from Bio-CMP Process of Poplar Heartwood by Flocculation Combined with Biological Aeration Filter
摘要
Abstract
In this study,poplar heart-wood were pretreated with the white-rot fungus Trametes sp.48424.The integrated wastewater generat-ed during chemical-mechanical pulping was treated by combining flocculation and precipitation with a biological aeration filter(BAF),to study the effect of wastewater reuse on biochemical-mechanical pulping and BAF,and to explore the feasibility of reuse of treated wastewater.The results showed that the use of white-rot fungus pretreatment technology could offset the CODCr produced by adding NaOH of 2％(relative to raw material oven dry weight).The maximum removal rate of CODCr after treatment was 49.9％.the maximum removal rate of CODCr treated by BAF was up to 91.8％.The effluent CODCr was reduced to 39.8 mg/L,which met the standards for reuse and discharge of pulping wastewa-ter.Wastewater reuse would reduce the overall efficiency of the BAF,and the treated wastewater was reused in the pulping system,which would also result in a certain impact on the paper performance.After reuse once,the effluent CODCr rised to 76.3 mg/L,so the treated waste-water could only be reused once.关键词
白腐菌/生物化学机械浆/絮凝沉淀法/生物曝气滤池/废水回用Key words
white-rot fungus/biochemical-mechanical pulp/flocculation/BAF/wastewater reuse分类
轻工纺织引用本文复制引用
牛虎军,谢益民,罗文琪,周安乡,薛超..絮凝沉淀与生物曝气滤池结合处理杨木心材生物化学机械法制浆废水[J].中国造纸学报,2024,39(1):38-46,9.基金项目
国家自然科学基金项目(21878070) （21878070）
湖北省高等学校优秀中青年科技创新团队计划项目(T201205). （T201205）
