Long-term performance evaluation of down-flow hanging sponge reactor regarding nitrification in a full-scale experiment in India
Long-term performance evaluation of down-flow hanging sponge reactor regarding nitrification in a full-scale experiment in India
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印度全规模实验中硝化下流式悬挂海绵反应器的长期性能评估
DOI：
10.1016/j.biortech.2016.01.005
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发表时间：
2016
影响因子：
11.4
通讯作者：
Hideki Harada
中科院分区：
文献类型：
--
作者：
Takashi Onodera;Tsutomu Okubo;Shigeki Uemura;Takashi Yamaguchi;Akiyoshi Ohashi;Hideki Harada
对首个工业规模的下流式悬挂海绵（DHS）反应器应用于城市污水上流式厌氧污泥床（UASB）反应器出水的后处理进行了评价，重点考察了反应器的硝化性能。在印度，全尺寸DHS反应器在水力停留时间为1.5 h的条件下成功运行了1800多天。DHS反应器产生的废水中铵态氮含量为6 mg L− 1，去除率为79%。DHS反应器的总氮去除率为65%。DHS反应器的高工艺性能得到了其独特特性的支持：（1）在没有强制通风的情况下，DHS流出物中的溶解氧高达5.4 mg L− 1，（2）在23-46 gVSS Lsponge−1范围内的密集保留污泥，以及（3）用于硝化的52 mgN gVSS−1day− 1的足够污泥活性。全尺寸实验证明，DHS反应器对发展中国家具有实用性。
The first full-scale down-flow hanging sponge (DHS) reactor applied to post-treatment of effluent from an upflow anaerobic sludge blanket (UASB) reactor for the treatment of municipal sewage was evaluated, with emphasis on nitrification. The full-scale DHS reactor was successfully operated at a hydraulic retention time of 1.5 h for over 1800 days in India. The DHS reactor produced effluent with 6 mg L−1ammonium nitrogen, corresponding to 79% removal efficiency. The total nitrogen removal by the DHS reactor was 65%. The high process performance of the DHS reactor was supported by its distinctive characteristics of (1) high dissolved oxygen of 5.4 mg L−1in the DHS effluent without forced ventilation, (2) dense retained sludge in the range of 23–46 gVSS Lsponge−1, and (3) adequate sludge activity of 52 mgN gVSS−1day−1for nitrification. The full-scale experiment has proven that the DHS reactor has practical applicability to developing countries.