高海拔地区占地集约型污水处理厂改扩建工艺设计  

Reconstruction and Expansion Process Design of Intensive Sewage Treatment Plant in High Altitude Area

作　　者：高小波 李有凡 宋海东 陈志华 GAO Xiaobo;LI Youfan;SONG Haidong;CHEN Zhihua(China Municipal Engineering Northwest Design and Research Institute Co.,Ltd,Lanzhou 730000,China)

机构地区：[1]中国市政工程西北设计研究院有限公司,甘肃兰州730000

出　　处：《水处理技术》2024年第9期139-143,共5页Technology of Water Treatment

摘　　要：高海拔地区污水处理厂存在水温低、气压低、空气中含氧量低等技术难题。以昌都市污水处理厂为例,系统说明了改扩建项目的工艺设计,以期为同类工程的建设提供参考。污水处理厂所在城市海拔3200 m,现状污水厂集约化布置且可用场地面积非常有限,占地面积24.5亩。设计规模为1.5万m^(3)/d,其中扩建工程规模为0.6万m^(3)/d,升级改造工程规模为0.9万m^(3)/d;出水满足《城镇污水处理厂污染物排放标准》(GB 18918-2002)一级A标准;设计采用“MBBR+磁混凝沉淀”处理工艺,在4.51亩的建设用地范围内,设计了高度集成的组合建构筑物,完成扩建工程;在占地面积为19.99亩的现状厂区,完成升级改造工程。项目已达标运行12个月,出水水质优于排放标准,且冬季运行良好、稳定达标。Sewage treatment plants located in high-altitude areas face technical challenges such as low water temperatures,low air pressure and oxygen levels.The Changdu sewage treatment plant as a case,a systematic overview of the process design for its expansion project was provided to offer insights and recommendations for similar engineering initiatives.The Changdu sewage treatment plant is situated in a city with an altitude of 3200 m,which has a compact layout with a limited available land area of only 24.5 acres.The plant has a designed capacity of 15000 cubic meters per day,comprising a 6000 m^(3)/d expansion project and a 9000 m^(3)/d upgrade and renovation project.The effluent meets the Class A standard of the"Emission Standard of Pollutants for Municipal Wastewater Treatment Plant"(GB 18918-2002).The plant employs the"Moving Bed Biofilm Reactor(MBBR)and magnetic coagulation sedimentation"treatment process,and a highly integrated combination structure is designed within a construction area of 4.51 acres to complete the expansion project.The upgrade and renovation project is completed within the existing plant area of 19.99 acres.The plant has been in operation for 12 months,with the effluent quality surpassing the discharge standard.Moreover,it has achieved stable and efficient operation even during the winter months,thus meeting the desired quality requirements.

关 键 词：污水处理 改扩建 MBBR+磁混凝沉淀 

分 类 号：X703[环境科学与工程—环境工程]