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以广州市供水安全体系中珠江航道备用水源为研究对象,在模拟西江水源遭受突发事件、切换使用备用水源的条件下,考察高速BAF作为其预处理工艺的应急能力。结果表明,高速BAF具有良好的抗冲击负荷能力:当原水氨氮≤4 mg/L时,切换水源12 h后预处理出水氨氮基本可降至1 mg/L以下,至24 h后基本可降至0.5 mg/L以下;切换水源后数小时内滤池中的亚硝酸菌和硝酸菌在生长速率和转化能力上已协调稳定,反应器内的硝化菌驯化效果良好;切换水源12 h后对CODMn的平均去除率为19.5%,对浊度的平均去除率为19.8%。
Taking the reserve water of the Pearl River waterway in Guangzhou water supply safety system as the research object, the high-speed BAF was investigated as the emergency response ability of the pretreatment process under the conditions of simulating the water source of Xijiang River and switching to the standby water source. The results show that the high speed BAF has a good impact load capacity: When the ammonia nitrogen in the raw water is less than 4 mg / L, the ammonia nitrogen in the pretreated effluent can be reduced to less than 1 mg / L after switching the water source for 12 h, and can be basically reduced to 24 h 0.5 mg / L; within a few hours after switching water, nitrite bacteria and nitrification bacteria in the filter pool were coordinated and stable in growth rate and conversion ability, and the domesticated nitrifying bacteria had a good domestication effect. After switching water sources for 12 h, CODMn The average removal rate was 19.5% and the average turbidity removal was 19.8%.