生态生物反应池/化学除磷用于污水厂提标改造

Application of Ecological Bioreactor / Chemical Phosphorus Removal to Upgrading and Reconstruction of a Wastewater Treatment Plant

广东某污水厂处理规模为30 000 m3/d,原出水水质执行《城镇污水处理厂污染物排放标准》(GB 18918—2002)一级B排放标准。提标改造工程对原有的两组氧化沟进行改造,建设生态生物反应池,强化了碳、氮以及臭气的脱除能力,并具有良好的景观效果。投加聚合氯化铝(PAC)作为化学除磷药剂,实现磷的深度去除。实施提标改造工程后,出水水质稳定达到《地表水环境质量标准》(GB 3838—2002)的Ⅲ类水质标准。

The treatment capacity of a wastewater treatment plant in Guangdong Province was 3 × 10^4 m^3/d. The original effluent quality met the first level B criteria specified in the Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant （ GB 18918 - 2002）. The original oxidation ditches were reconstructed into ecological bioreactors to enhance carbon, nitrogen and odor removal during the upgrading and reconstruction project. Po!yaluminum chloride （PAC） was dosed as a chemical for enhanced phosphorus removal. After the upgrading and reconstruction project, the effluent quality stably could meet the m criteria specified in the Environmental Quality Standards for Surface Water （GB 3838 -2002）.