郑州某大型污水处理厂运行经验及工艺调控分析  

A large-scale wastewater treatment plant operation experience and process control analysis in Zhengzhou

作　　者：王荣红 范小龙 毛迪 易海明 王宁 马园园 张得位 WANG Ronghong;FAN Xiaolong;MAO Di;YI Haiming;WANG Ning;MA Yuanyuan;ZHANG Dewei(Zhengzhou Sewage Purifying Co.,Ltd.,Zhengzhou 450044,China)

机构地区：[1]郑州市污水净化有限公司,河南郑州450044

出　　处：《工业水处理》2024年第2期201-206,共6页Industrial Water Treatment

摘　　要：污水厂超负荷下稳定运行一直是研究者关注的热点,高效脱氮除磷是稳定运行过程中的难点。郑州某污水处理厂采用前置预缺氧改良A^(2)/O工艺,处理水量是设计值的1.2~1.8倍,进水BOD_(5)/COD、BOD_(5)/TN、BOD_(5)/TP范围分别为0.19~0.88、1.38~7.21、13.12~89.17,采用多点进水、提高内回流比、精确曝气等运行方式,分析了污水全流程中氮磷的变化。结果表明,当进水均匀分配在预缺氧、厌氧、缺氧工段,内回流比为400%,好氧池DO质量浓度为0.5 mg/L以下时,COD、TN、TP去除率达到90.4%、83%、98.55%,优于《城镇污水处理厂污染物排放标准》(GB 18918—2002)一级A排放标准,部分指标达到《地表水质量标准》(GB 3838—2002)Ⅲ类标准。Stable operation of wastewater plants under overload has been a hot spot of concern for researchers,and efficient nitrogen and phosphorus removal is a difficult point in the process of stable operation.A wastewater treatment plant in Zhengzhou uses a pre-anoxic modified A^(2)/O process,treating 1.2-1.8 times the design value,with influent BOD_(5)/COD,BOD_(5)/TN and BOD_(5)/TP ranges of 0.19-0.88,1.38-7.21 and 13.12-89.17 respectively,and uses multi-point distribution of influent,increased internal reflux ratio,precise aeration and other operation methods.The variation of nitrogen and phosphorus in the whole wastewater process was analyzed.The results showed that the removal rates of COD,TN and TP reached 90.4%,83% and 98.55%,which were better than the ClassⅠA discharge standard of the Pollutant Discharge Standard for Urban Wastewater Treatment Plants(GB 18918—2002),when the influent water was evenly distributed in the pre-anoxic,anaerobic and anoxic sections,the internal return ratio was 400% and the DO concentration in the aerobic tank was below 0.5 mg/L.Some indicators reached Surface Water Quality Standard(GB 3838—2002)Class Ⅲ standard.

关 键 词：超负荷 脱氮除磷 污水处理 

分 类 号：TU992[建筑科学—市政工程]