摘要
长沙某污水厂现状执行一级A排放标准,提标扩建总规模45×10^(4)m^(3)/d,其中一期工程由现状规模20×10^(4)m^(3)/d提标扩容至25×10^(4)m^(3)/d,二期提标工程规模10×10^(4)m^(3)/d,三期扩建工程规模10×10^(4)m^(3)/d。提标扩建后出水水质达到《湖南省城镇污水处理厂主要水污染物排放标准》(DB 43/T 1546—2018)一级标准。提标工程将一期现状MSBR池改造为AAO-MBBR+澄清池,将二期现状曝气生物滤池改造为双填料滤池,实现原位提标,三期扩建工程采用MBR+紫外消毒工艺。该工程预留有3×10^(4)m^(3)/d污水再生回用设施,尾水排放浏阳河。实际运行表明,系统出水水质完全达到了设计标准。
The current effluent discharge standard of a sewage treatment plant in Changsha is the first level A discharge standard, and the total scale will reach 45×10^(4)m^(3)/d after the expansion and upgrading. The phase Ⅰ project is expanded from the current scale of 20×10^(4)m^(3)/d to 25×10^(4)m^(3)/d, and those of the phases Ⅱ and Ⅲ are 10×10^(4)m^(3)/d and 10×10^(4)m^(3)/d, respectively. The effluent quality needs to meet the first level criteria specified in Discharge Standard of Major Pollutants for Municipal Wastewater Treatment Plant(DB 43/T 1546-2018) after the expansion and upgrading. The current MSBR tank of phase Ⅰ was transformed into AAO-MBBR and clarifier. The current biological aerated filter was transformed into double packing media filter in phase Ⅱ to realize the in-situ upgrading. The process of MBR and UV disinfection was adopted in the expansion project of phase Ⅲ. In addition, the sewage recycling facilities with scale of 3×10^(4)m^(3)/d were reserved, and tail water was discharged into Liuyang River. The actual operation indicated that the effluent quality of the system completely met the design standard.
作者
刘影
LIU Ying(Hunan Architectural Design Institute Limited Company,Changsha 410012,China)
出处
《中国给水排水》
CAS
CSCD
北大核心
2021年第18期63-69,共7页
China Water & Wastewater
关键词
提标扩建
双填料滤池
MBBR
MBR
expansion and upgrading
double packing media filter
MBBR
MBR
