摘要
以海河流域某工业园区采用UCT(悬浮填料)工艺的高排放标准污水处理厂为例,结合生产运行实际,对诊断的运行问题进行了分析,并对其精细化优化运行措施进行了研究,结果表明:通过优化碳源投加点(由缺氧池1改至"厌氧池"),在硝化液DO为6.89mg/L和内回流比200%下,系统脱氮效能强化约5mg/L;通过将厌氧池改为消氧区并按AO脱氮工艺运行,可控制硝化液高浓度DO导致的进水碳源损耗,在内回流比200%和硝化液DO为3~4mg/L下,系统脱氮效能平均强化2.14mg/L,可节省碳源乙酸钠溶液投加成本7.1万元/月,节省运行电费2.4万元/月;通过基于进水磷酸盐浓度确定化学协同除磷药剂投加量,在99%进水磷酸盐不超过1.18mg/L和PAC溶液投加量20mg/L下,二级出水磷酸盐通常不超过0.24mg/L,与优化前相比,化学协同除磷药剂投加量降低120mg/L,节省投加成本8.6万元/月;通过提升二沉池集水槽液位控制跌水充氧作用,低温季节反硝化滤池单元碳源投加量可降低约7mg/LCOD,投加成本可节省约7.1万元/月。
Taking the high emission standard WWTP using UCT process with suspended filler added to aerobic tank in an industrial park in Haihe Basin as an example,combining with actual operation,operational problems based on diagnosis were analyzed respectively,and its refinement optimization operation measures were studied respectively,the results showed that:by optimizing carbon source addition point which is changed to anaerobic tank from the 1 st anoxic tank,nitrogen removal capacity of the process was advanced by 5 mg/L with DO of nitrifying solution of6.89 mg/L and internal reflux ratio of 200%;By using AO nitrogen removal process with anaerobic tank as DO removal zone,the loss of carbon source in influent caused by high concentration DO in nitrifying solution can be controled,nitrogen removal capacity of the process was advanced by 2.14 mg/L average with DO of nitrifying solution of 3 mg/L to 4 mg/L and internal reflux ratio of 200%,addition cost of carbon source and operation electric charge can be saved by 71 thousand yuan per month and 24 thousand yuan per month respectively;By determining dosage of chemical synergistic phosphorus removal agent basis on influent phosphate concentration,phosphate of secondary effluent is no more than 0.24 mg/L with influent phosphate of 99%no more than1.18 mg/L and PAC solution dosage of 120 mg/L,dosage of chemical synergistic phosphorus removal agent reduced by 120 mg/L and its addition cost saved by 86 thousand yuan per month;By controling waterfall aeration by lifting water level of sump of secondary clarifier,carbon source dosage of denitrification filter unit in low temperature seasons can reduce by 7 mg/L COD,and its addition cost can saved by 71 thousand yuan per month.
作者
杨敏
郭兴芳
孙永利
郑兴灿
李劢
熊会斌
申世峰
吴凡松
Yang Min;Guo Xingfang;Sun Yongli;Zheng Xingcan;Li Mai;Xiong Huibin;Shen Shifeng;Wu Fansong(North China Municipal Engineering Design&Research Instit te Co.,Ltd.,Tianjin 300074,China)
出处
《给水排水》
CSCD
北大核心
2020年第2期57-62,共6页
Water & Wastewater Engineering
基金
国家水体污染控制与治理科技重大专项（2017ZX07107-003）
关键词
问题诊断
碳源投加点优化
消氧区
协同除磷药剂投加优化
跌水充氧控制
Problem diagnosis
Carbon source addition point optimization
Biological DO removal zone
Chemical synergistic phosphorus removal agent addition optimization
Control of waterfall aeration
