上流式反硝化生物膜反应器中硝酸盐依赖型Fe(II)氧化去除硝酸盐
Nitrate removal by nitrate-dependent Fe(II) oxidation in an upflow denitrifying biofilm reactor.
作者信息
Zhou Jun, Wang Hongyu, Yang Kai, Sun Yuchong, Tian Jun
机构信息
School of Civil Engineering, Wuhan University, Wuhan 430072, China E-mail:
Northeast Electric Power Design Institute, Changchun 130000, China.
出版信息
Water Sci Technol. 2015;72(3):377-83. doi: 10.2166/wst.2015.211.
A continuous upflow biofilm reactor packed with ceramsite was constructed for nitrate removal under an anaerobic atmosphere without an organic carbon source. Denitrifying bacteria, Pseudomonas sp. W1, Pseudomonas sp. W2 and Microbacterium sp. W5, were added to the bioreactor as inocula. Nitrate concentration, nitrite accumulation and nitrogen removal efficiency in the effluent were investigated under various conditions set by several parameters including pH, hydraulic retention time (HRT), ratios of carbon to nitrogen (C/N) and temperature. The results illustrated that the maximum removal efficiency of nitrogen was 85.39%, under optimum reaction parameters, approximately pH 6.5-7, HRT = 48 hours and C/N = 13.1:1 at temperature of 30 °C, which were determined by experiment.
构建了一个填充陶粒的连续上流式生物膜反应器，用于在无氧气氛且无有机碳源的条件下去除硝酸盐。将反硝化细菌假单胞菌属W1、假单胞菌属W2和微杆菌属W5作为接种物添加到生物反应器中。在由pH、水力停留时间（HRT）、碳氮比（C/N）和温度等几个参数设定的各种条件下，研究了流出物中的硝酸盐浓度、亚硝酸盐积累和氮去除效率。结果表明，通过实验确定，在最佳反应参数下，即pH约为6.5 - 7、HRT = 48小时、C/N = 13.1:1且温度为30℃时，氮的最大去除效率为85.39%。
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