老龄垃圾填埋场渗滤液短程硝化试验研究
|
摘要
在A/O模式运行的SBR反应器中进行垃圾渗滤液短程硝化工艺的实现及稳定控制技术研究。结果表明,通过逐步提高进水中垃圾渗滤液比例,可使市政污水处理厂污泥快速适应垃圾渗滤液的水质,并实现稳定的短程硝化,亚硝氮积累率可高达95%以上;氨氮负荷是影响短程硝化系统快速启动的重要因素。在稳定的短程硝化系统中,曝气阶段后期溶解氧显著增加,但未对亚硝氮积累率产生影响;试验过程中水温变化在12～29℃范围内,垃圾渗滤液的短程硝化效果维持稳定,在低温条件下亦能保持对NOB的良好抑制作用。
Partial nitrification(PN) of aging landfill leachate was investigated in a SBR reactor operated in A/O mode. The results showed activated sludge for sewage treatment could adapt to the landfill leachate with raising the ratio of leachate in influent step by step, and stable partial nitrification was successfully achieved, with the nitrite accumulation ratio(NAR) above 95%. Influent ammonia load was a key factor for the start-up of nitrification. In stable partial nitrification stage, high dissolved oxygen emerged during the last period of aerating phase but had no effect on NAR. The PN system remained robust within the temperature range of 12～29 ℃. Nitrite oxidize bacterial(NOB) was suppressed even at low temperature.
Partial nitrification(PN) of aging landfill leachate was investigated in a SBR reactor operated in A/O mode. The results showed activated sludge for sewage treatment could adapt to the landfill leachate with raising the ratio of leachate in influent step by step, and stable partial nitrification was successfully achieved, with the nitrite accumulation ratio(NAR) above 95%. Influent ammonia load was a key factor for the start-up of nitrification. In stable partial nitrification stage, high dissolved oxygen emerged during the last period of aerating phase but had no effect on NAR. The PN system remained robust within the temperature range of 12～29 ℃. Nitrite oxidize bacterial(NOB) was suppressed even at low temperature.
引文
[1]范洁,张悦,郑兴灿.城市垃圾填埋场渗滤水的水质特征及其处理技术[D].中国土木工程学会水工业分会第四届理事会第一次会议论文集,2002.
[2]解庆林,李小霞,李艳红,等. SBR反应器内短程硝化系统快速启动及影响因素研究[J].环境科学与技术,2009,32(2):134-137.
[3]吴伟伟,王舜和,王建龙,等.短程硝化反应器的快速启动与运行特性[J].清华大学学报(自然科学版),2006,46(12):2077-2080.
[4]Ali, M., Okabe, S. Anammox-based technologies for nitrogen removal:Advances in process start-up and remaining issues[J]. Chemosphere,2015, 141:144-153.
[5]国家环保局.水和废水监测分析方法(第4版)[M].北京:中国环境科学出版社,2002.
[2]解庆林,李小霞,李艳红,等. SBR反应器内短程硝化系统快速启动及影响因素研究[J].环境科学与技术,2009,32(2):134-137.
[3]吴伟伟,王舜和,王建龙,等.短程硝化反应器的快速启动与运行特性[J].清华大学学报(自然科学版),2006,46(12):2077-2080.
[4]Ali, M., Okabe, S. Anammox-based technologies for nitrogen removal:Advances in process start-up and remaining issues[J]. Chemosphere,2015, 141:144-153.
[5]国家环保局.水和废水监测分析方法(第4版)[M].北京:中国环境科学出版社,2002.