环境保护科学2025，Vol.51Issue(1)：68-78,11.DOI:10.16803/j.cnki.issn.1004-6216.202406026
基于Box-Behnken响应曲面法的混凝处理污水处理厂尾水工艺参数优化
Optimization of process parameters for coagulation treatment of sewage treatment plant tailwater based on Box-Behnken response surface methodology
摘要
Abstract
The recycling of reclaimed water is an effective way to solve the shortage of water resources in our country,and the tail water of sewage treatment plant is an important source of reclaimed water.Taking the tail water of a municipal sewage treatment plant in Qufu,Shandong Province as the treatment object,the removal effects of 6 kinds of coagulants on ammonia nitrogen(NH4+-N),total nitrogen(TN),total phosphorus(TP)and chemical oxygen demand(COD)in the tail water of a sewage treatment plant were compared.The results showed that when polyferric sulfate(PFS)was used as coagulant,the effluent concentration not only met the landscape environmental water reuse standard but also the unit water treatment cost was lowest.The effects of dosage of coagulant PFS,pH,dosage of coagulant aid polyacrylamide(PMA)and rapid stirring time on the tailwater effect of coagulant treatment wastewater treatment plant were investigated by single factor experiment.The dominant experimental conditions were PFS dosage of 40 mg/L,pH 6.0,PAM dosage of 1.5 mg/L.The rapid mixing time is 15 min.Based on the experimental design principle of Box-Behnken response surface methodology,the response surface model was established,and the model was fit well.The interaction effects of PFS dosage,PAM dosage and rapid stirring time on coagulation effect were investigated.The results showed that the interaction between PFS dosage and PAM dosage was obvious for NH4+-N removal rate.In terms of TN removal rate,the interaction between PAM dosage and rapid stirring time was obvious.Three-dimensional fluorescence spectrum and region integral method showed that the maximum fluorescence intensity of dissolved organic matter decreased significantly after coagulation treatment,and coagulation had a better degradation effect on organic matter in the tail water of sewage treatment plant.关键词
再生水/污水处理厂尾水/混凝/Box-Behnken/响应曲面法Key words
reclaimed water/sewage treatment plant tailwater/coagulation/Box-Behnken/response surface methodology分类
环境科学引用本文复制引用
黎佳茜,刘雪瑜,阿蓉,王栋友,张娟娟,刘明亮..基于Box-Behnken响应曲面法的混凝处理污水处理厂尾水工艺参数优化[J].环境保护科学,2025,51(1):68-78,11.基金项目
国家自然科学基金(22106173) （22106173）
生态环境部预算项目(102144220260000009095) （102144220260000009095）
