摘要
盐城城东污水处理厂原设计采用AAO工艺,出水水质执行《城镇污水处理厂污染物排放标准》(GB 18918—2002)中的一级B标准,提标改造工程要求出水水质执行一级A标准。通过生物处理系统的仿真模拟分析,把3座AAO生物反应池改造为MBBR池,以实现充分硝化、反硝化;采用磁混凝澄清池去除TP及SS;对全厂散发臭气的构筑物采用玻璃钢加盖,除臭采用土壤法。工程总投资约7 000万元,单位经营成本增加0. 22元/m^3。工程投运后取得了较好的处理效果,MBBR+磁混凝工艺辅以土壤除臭技术对我国污水厂提标改造工程具有较好的借鉴意义。
The AAO process was adopted in ~ancheng Chengdong wastewater treatment plant in original design plan, and the effluent water quality was required to meet the first level B standard in the Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant （ GB 18918 - 2002 ）. In order to meet the first level A standard, the upgrading and renovation project was conducted. In this project, three AAO bioreaction tanks were transformed into MBBR tanks to achieve high efficiencies of nitrification and denitrification according to the simulation and analysis of biological treatment system. Meanwhile, TP and SS were removed by magnetic coagulation clarifier. The smelly structures of the whole plant were cov- ered with fiberglass, and the ＂soil method＂ was adopted for deodorization. The total investment of the project was about 70 million yuan and the operating cost increased by 0.22 yuan/m3. In conclusion, an excellent treatment performance has been achieved after operation, and the MBBR ＋ magnetic coagula- tion process combined with soil deodorization, would be a good technology for the upgrading and renova- tion project of wastewater treatment plant in China.
作者
熊建英
XIONG Jian-ying(Shanghai Municipal Engineering Design Institute 〈 Group 〉 Co.Ltd.,Shanghai 200092,China)
出处
《中国给水排水》
CAS
CSCD
北大核心
2018年第20期50-55,共6页
China Water & Wastewater
关键词
提标改造
MBBR
磁混凝
upgrading
moving bed biofilm reactor
magnetic coagulation
