Low temperature effects on nitrification and nitrifier community structure in V-ASP for decentralized wastewater treatment and its improvement by bio-augmentation
Low temperature effects on nitrification and nitrifier community structure in V-ASP for decentralized wastewater treatment and its improvement by bio-augmentation
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低温对分散式废水处理 V-ASP 中硝化作用和硝化菌群落结构的影响及其生物强化的改善
DOI：
10.1007/s11356-017-0927-9
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发表时间：
2018-03
影响因子：
5.8
通讯作者：
Zhao Ke
中科院分区：
文献类型：
--
作者：
Yuan Jiajia;Dong Wenyi;Sun Feiyun;Zhao Ke
植物活性污泥法是一种环境友好的分散式污水处理系统，具有美观、占地少等优点。然而，低温对V-ASP处理效果的影响及相关的改善方法，目前研究较少。通过与传统ASP的比较，从整体硝化性能、基质利用动力学、功能酶活性和微生物群落结构变化等方面，全面研究了低温对V-ASP硝化作用的影响。通过单次投加硝化菌富集生物量的生物强化方法，在实验室和生产性系统中提高硝化效率。实验结果表明，在30~15 ° C范围内，V-ASP系统的NH4 +-N去除率、NH4 +-N氧化率、亚硝酸盐氧化率和酶活性均随温度的降低而降低，且降低幅度小于ASP，表明V-ASP系统具有较强的耐低温性。当硝化菌直接投加量为1.6 mg/gSS污泥时，V-ASP的硝化效率从50%以下提高到90%以上，表明生物强化对V-ASP有效，其酶活性和微生物群落结构均得到改善。经过长期试验，进一步证实了生物强化技术在V-ASP系统中的可行性和有效性，对实际应用具有指导意义。
The vegetation-activated sludge process (V-ASP) has been proved to be an environment-friendly decentralized wastewater treatment system with extra esthetic function and less footprint. However, the effects of low temperature on the treatment performance of V-ASP and related improvement methods are rarely investigated, up to now. In this work, the effect of low temperature on nitrification in V-ASP was comprehensively investigated from overall nitrification performance, substrate utilization kinetics, functional enzymatic activities, and microbial community structure shift by comparison with conventional ASP. Bio-augmentation methods in terms of single-time nitrifier-enriched biomass dosage were employed to improve nitrification efficiency in bench- and full-scale systems. The experiment results demonstrated that the NH4+–N removal efficiency in V-ASP system decreased when the operational temperature decreased from 30 to 15 °C, and the decreasing extent was rather smaller compared to ASP, as well as ammonium and nitrite oxidation rates and enzymatic activities, which indicated the V-ASP system possesses high resistance to low temperature. With direct dosage of 1.6 mg nitrifier/gSS sludge, the nitrification efficiency in V-ASP was enhanced dramatically from below 50% to above 90%, implying that bio-augmentation was effective for V-ASP whose enzymatic activities and microbial communities were both also improved. The feasibility and effectiveness of bio-augmentation was further confirmed in a full-scale V-ASP system after a long-term experiment which is instructive for the practical application.
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影响因子：
6.9
作者：
Chunyan Xu;Hong-jun Han;Shengyong Jia;Qian Zhao
通讯作者：
Chunyan Xu;Hong-jun Han;Shengyong Jia;Qian Zhao
影响因子：
4.6
作者：
Wang D;Wang Q;Laloo A;Xu Y;Bond PL;Yuan Z
通讯作者：
Yuan Z
以反硝化厌氧甲烷氧化为核心的技术是污水处理厂可持续运行的解决方案吗？
影响因子：
11.4
作者：
Wang Dongbo;Wang Yali;Lian Yu;Zhao Jianwei;Chen Fei;Yang Qi;Zeng Guangming;Li Xiaoming;Wang Dongbo
通讯作者：
Wang Dongbo
影响因子：
17.3
作者：
Wang Yali;Wang Dongbo;Yang Qi;Zeng Guangming;Li Xiaoming
通讯作者：
Li Xiaoming
DOI：
10.2166/wst.2005.0395
发表时间：
2005-06
期刊：
Water science and technology : a journal of the International Association on Water Pollution Research
影响因子：
--
作者：
H. Dulkadiroglu;E. Cokgor;N. Artan;D. Orhon
通讯作者：
H. Dulkadiroglu;E. Cokgor;N. Artan;D. Orhon