中文关键词硝化污泥氨氮去除驯化高温生物强化 英文关键词nitrifying activated sludgeammonium nitrogen removalacclimationhigh temperaturebioaugmentation

作者	单位	E-mail
宋天伟	浙江清华长三角研究院生态环境研究所, 浙江省水质科学与技术重点实验室, 嘉兴 314006 浙江工业大学环境学院, 杭州 310014	243865281@qq.com
盛晓琳	浙江清华长三角研究院生态环境研究所, 浙江省水质科学与技术重点实验室, 嘉兴 314006
王家德	浙江工业大学环境学院, 杭州 310014
刘锐	浙江清华长三角研究院生态环境研究所, 浙江省水质科学与技术重点实验室, 嘉兴 314006	1393612924@qq.com
陈吕军	浙江清华长三角研究院生态环境研究所, 浙江省水质科学与技术重点实验室, 嘉兴 314006 清华大学环境学院, 北京 100084	chenlj@tsinghua.edu.cn

中文摘要 本文模拟夏季高温，考察了温度（30~45℃）和氨氮容积负荷对污水处理厂好氧池活性污泥硝化功能及微生物群落的影响，同时探讨中温富集硝化污泥高温驯化前后用于强化受高温冲击的生物处理系统的硝化效果.结果表明，在30~40℃水温下好氧池活性污泥的氨氮去除效果保持在90%以上，硝化菌含量也逐步升高至4.55%；当水温升至45℃时氨氮去除率和硝化菌含量均分别降至40%和1.97%.为快速恢复受夏季高温冲击的生物系统，将中温富集硝化污泥在40℃下驯化61 d后，获得硝化活性为（60±5） mg·（L·h）^-1的硝化污泥，考察中温富集硝化污泥驯化前后对受高温冲击的生物处理系统的强化效果，发现驯化后的中温富集硝化污泥只需投加5%（体积分数）即可提高10%的氨氮去除率，而未驯化的则需要投加10%（体积分数）.上述结果表明，中温富集硝化污泥经驯化后能更好地用于强化受高温冲击的生物处理系统的硝化功能. 英文摘要 The influence of temperature (30-45℃) and ammonia-nitrogen volume load on the nitrification function and microbial community of activated sludge in an aerobic tank of a sewage treatment plant were investigated under simulated high-temperature stress in the summer. Meanwhile, the bioaugmentation effectiveness of the middle-temperature-enriched nitrifying sludge (with or without acclimation) was evaluated in two biological treatment systems under high-temperature shock. The results showed that the ammonium-nitrogen (NH₄⁺-N) removal efficiency and the nitrifying bacteria content of the aerobic activated sludge at 30-40℃ were above 90% and up to 4.55% and decreased to 40% and 1.97% at 45℃, respectively. To quickly recover the nitrification function of the biological system under high-temperature shock in the summer, the middle-temperature-enriched nitrifying sludge was acclimated at 40℃ for 61 d and achieved (60±5) mg·(L·h)^-1 nitrification activity. Then, its bioaugmentation efficiency was compared with that of the middle-temperature-enriched nitrifying sludge. In the bioaugmentation test, 10% of NH₄⁺-N was removed in the reactor inoculated with 5% (volume fraction) of the acclimated nitrifying sludge, while the reactor needed inoculate with 10% (volume fraction) of the middle-temperature-enriched sludge to achieve the same removal efficiency. The results suggested that middle-temperature-enriched nitrifying sludge, after acclimating at 40℃, has a better enhancement effect under a high-temperature shocking load.

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