化工环保2025，Vol.45Issue(4)：503-509,7.DOI:10.3969/j.issn.1006-1878.2025.04.007
响应性淀粉基絮凝剂的合成及其对染料废水的处理
Synthesis of responsive starch-based flocculant and recycling of salt-containing dye wastewater
摘要
Abstract
A starch-based flocculant with pH and salt response characteristics was synthesized by grafting 2-chloro-4,6-diamino-1,3,5-triazine(CAT)to starch,and it was used to remove the reactive dye K-2BP from solution.Effects of pH,flocculant dosage,salt content,and settling time on the flocculation effect were investigated systematically,and the feasibility of recycling decolorized wastewater into the dyeing process was discussed.The experimental results indicate that this flocculant exhibits ultra-salt responsiveness.Obvious phase separation is observed in the solution environment of pH 1.5 and 0.5 g/L Na2SO4.When the flocculant dosage is 0.40 g/L,and sedimentation time reachs 5 min,the removal rate of K-2BP is 97.0%in the operating environment with 200 mg/L reactive dye K-2BP and pH 1.3.The consumption of inorganic salt and fresh water can be reduced by reusing the saline wastewater after decolorization treatment in the dyeing process.In summary,this flocculant has a promising future in the decolorization treatment of high salt wastewater,with the advantages of low residual rate and strong anti-re-stabilization ability,leading to consistent effectiveness regardless of salinity.关键词
盐响应/自清洁/淀粉基絮凝剂/染料废水Key words
salt response/self-cleaning/starch-based flocculant/dye wastewater分类
资源环境引用本文复制引用
王圣欣,何丽,王荣杰,顾猛,史玉琳..响应性淀粉基絮凝剂的合成及其对染料废水的处理[J].化工环保,2025,45(4):503-509,7.基金项目
第七师胡杨河市石河子大学创新合作"揭榜挂帅"项目(QS2023001) （QS2023001）
"天山英才"培养计划项目(2023TSYCJU0006). （2023TSYCJU0006）
