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利用新型臭氧-炭滤-消毒-砂滤组合净水工艺处理北江微污染原水,研究了上流式曝气生物活性炭滤池的启动情况。试验结果表明,上流式曝气生物活性炭滤池气水体积比为0.2:1,启动20 d后,对氨氮的去除率稳定在79%左右,滤池挂膜成功;采用两段式气水混合反冲洗方式,反冲洗周期3～5 d,可有效控制水头损失,维持滤池稳定运行。上流式曝气生物活性炭滤池启动完成后,试验系统最终出水CODMn、氨氮、亚硝氮、浊度均达到生活饮用水卫生标准(GB 5749-2006)和饮用净水水质标准(CJ 94-2005)。
A new type of ozone - carbon filter - disinfection - sand filtration combined water purification process Beijiang slightly polluted raw water to study the upflow aerated biological activated carbon filter start situation. The results showed that the volume ratio of gas to water in upflow biological aerated filter was 0.2: 1, and the removal rate of ammonia nitrogen stabilized at about 79% Backwash mode, backwash cycle 3 ~ 5 d, head loss can be effectively controlled to maintain the stable operation of the filter. After the upflow biological aerated filter activated, the final effluent CODMn, ammonia nitrogen, nitrite nitrogen and turbidity of the test system all reached the standard of sanitary drinking water (GB 5749-2006) and drinking water quality standard (CJ 94-2005 ).