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以广州市供水安全体系中珠江航道备用水源作为对象,研究其在突发事故情况下,即西江水遭受突发事件切换使用备用水源时,高速给水曝气生物滤池(BAF)作为其生物预处理环节的联合常规处理的应急能力。结果表明,高速BAF联合常规处理具有良好的抗冲击负荷能力:切换水源48～72 h之后,预处理出水氨氮的质量浓度稳定在1～2 mg.L-1,最终砂滤池出水氨氮的质量浓度稳定≤0.5 mg.L-1;切换水源后数小时内滤池中的亚硝酸盐菌和硝酸盐菌在生长速率和转化能力上已协调稳定,反应器内硝化类细菌驯化效果良好;COD预处理平均去除率在45 h后稳定在15%～20%,砂滤池的最终出水在48 h之后<4 mg.L-1;浊度平均去除率稳定在29.9%。
Taking the reserve water of the Pearl River waterway in Guangzhou Water Supply Security System as an object, this paper studied the effect of high-speed feedwater aerated biological filter (BAF) as its biological pre-treatment Joint routine handling of emergency response capabilities. The results show that high-speed BAF combined with conventional treatment has a good impact load capacity: after 48 ~ 72 h of switching water source, the mass concentration of ammonia nitrogen in the pretreated effluent is stable at 1 ~ 2 mg.L-1, and the quality of ammonia nitrogen in the final sand filter effluent The concentration was stable ≤0.5 mg.L-1; the nitrite bacteria and nitrate bacteria in the filter within a few hours after switching water source were coordinated and stable in the growth rate and transformation ability, and the acclimation of nitrifying bacteria in the reactor was good; COD The average removal rate of pretreatment stabilized at 15% -20% after 45 h, the final effluent of sand filter was <4 mg.L-1 after 48 h, and the average removal rate of turbidity stabilized at 29.9%.