摘要
东营市某污水处理厂一期工程建设规模为6.0万m^3/d,采用“预处理+多模式AAO生化+中间提升+深度处理+消毒”工艺。建成后两年,水量不足,2015年10月开始调试运行,进水水质BOD5偏低、碳源不足;地下水中的高浓度Cl^-入渗进入以及冬季供暖地源热泵尾水排入污水管网,非采暖季Cl^-浓度为1 000~2 000 mg/L,采暖季Cl^-浓度为4 000~5 000 mg/L,个别时段超过6 000 mg/L。实际运行中通过完善管网、投加碳源、培养驯化微生物适应高浓度Cl^-环境、选用增加缺氧池HRT的传统AAO模式运行、冬季提高污泥浓度运行等措施,处理后出水水质达到《城镇污水处理厂污染物排放标准》(GB 18918—2002)中一级A标准。
The construction scale of the first phase of Dongying Wastewater Treatment Plant ( WWTP) is 60 000 m^3/d with the process of "pretreatment + multi-mode AAO biochemical process + intermediate lifting + advanced treatment + disinfection". Due to the insufficient inflow water, the commissioning operation began in October 2015. The influent water quality is low in BOD5 and the carbon source is insufficient. The concentration of Cl^- infiltration in the groundwater is high and the heating in winter are discharged into sewage pipe due to groundwater heat pump tail water. In the non-heating seasons, Cl^- concentration is about 1 000 ~2 000 mg/L and in the heating season is about 4 000~5 000 mg/L,but the individual time period is over 6 000 mg/L. In actual operation,measures such as improving the pipe network, adding carbon source, cultivating domesticated microorganisms are adapt to high-concentration Cl^- environment, selecting traditional AAO mode operation to increase HRT in anoxic tank, and increasing sludge concentration in winter are used to make effluent quality reach the first grade A standard in the Discharge Standard of Pollutants for Municipal Sewage Treatment Plants 18918-2002).
作者
黄开
HUANG Kai(Shanghai Municipal Engineering Design Institute <Group> Co., Ltd., Shanghai 200092)
出处
《净水技术》
CAS
2019年第7期27-32,46,共7页
Water Purification Technology
关键词
污水处理厂
高浓度Cl^-
培养驯化
多模式AAO
wastewater treatment plant (WWTP)
high concentration Cl^- cultivation and domestication
multi-mode AAO
