净水技术2024，Vol.43Issue(z2)：83-89,215,8.DOI:10.15890/j.cnki.jsjs.2024.s2.012
磁介质混凝沉淀工艺在污水处理厂深度除磷改造中的应用
Application of Magnetic Medium Coagulation and Sedimentation Process for WWTP Phosphorus Deep Removal Reconstruction
皮家悦 1余舰波 1杨上1
作者信息
- 1. 中国市政工程中南设计研究总院有限公司,湖北武汉 430000
- 折叠
摘要
Abstract
A municipal wastewater treatment plant(WWTP)with a treatment capacity of 75 000 m3/d in Chongqing adopts the improved oxidation ditch and filter cloth filter treatment process.And the effluent stably meets the first class A criteria of Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant(GB 18918-2002).Due to facing the assessment of achieving stable water quality standards at state-controlled water sections,the project adds the magnetic media coagulation and sedimentation process under the condition of using the limited zone in the WWTP to improve the treatment efficiency.The operation results show that the overall effluent effect of the WWTP is improved.Under the condition of 90％coverage,the effluent TP mass concentration is 0.10 mg/L,SS mass concentration is 4 mg/L,CODCr mass concentration is 14 mg/L,BOD5 mass concentration is 2.3 mg/L,TN mass concentration is 11.2 mg/L,and ammonia nitrogen mass concentration is 0.30 mg/L,which stably meets the requirement of quasi class Ⅳ water quality discharge standard.The investment indicator for project is 468 yuan/m3.The operational chemical consumption is as follows:PAC(10％solution)dosage is 98 mg/L,PAM(anionic)dosage is 0.95 mg/L,and the magnetic coagulation dosage is 1.73 mg/L.The electricity consumption is 0.021 kW·h/m3.The direct operating cost of the magnetic medium coagulation and sedimentation process is 0.111 0 yuan/m3,with the main cost being chemical agent,accounting for 85.41％.关键词
磁介质/混凝沉淀/深度除磷/污水处理/提标改造Key words
magnetic medium/coagulation and sedimentation/deep phosphorus removal/wastewater treatment/upgrading transformation分类
建筑与水利引用本文复制引用
皮家悦,余舰波,杨上..磁介质混凝沉淀工艺在污水处理厂深度除磷改造中的应用[J].净水技术,2024,43(z2):83-89,215,8.
