以浒苔发酵液为碳源的新型海水养殖废水脱氮工艺
Novel nitrogen removal process in marine aquaculture wastewater treatment using Enteromorpha ferment liquid as carbon.
作者信息
Yu Yiming, Chen Guanghui, Yu Deshuang, Qiu Yanling, Li Songjie, Guo Enhui
机构信息
School of Environmental Science and Engineering, Qingdao University, Qingdao 266071, PR China.
School of Environmental Science and Engineering, Qingdao University, Qingdao 266071, PR China; Carbon Neutrality and Eco-Environmental Technology Innovation Center of Qingdao, PR China.
出版信息
Bioresour Technol. 2023 Jun;377:128913. doi: 10.1016/j.biortech.2023.128913. Epub 2023 Mar 17.
The process performance of partial denitrification of a novel anaerobic fermentation integrated fixed-film activated sludge (IFAS-AFPD) of Enteromorpha was studied. The response surface method was used to determine the optimal reaction conditions, and the operation experiment was carried out under the optimal conditions. The results showed that the nitrogen removal effect was the best when the salinity was 12.2 g•L, the Carbon-Nitrogen ratio (C/N) was 4, the pH was 8.5, and the Nitrite Accumulation Rate, Nitrate Removal Rate, Chemical Oxygen Demand Utilization Rate could reach 77%, 89% and 51%. Experimental results have shown that the NAR of the Enteromorpha ferment liquid system could be maintained at about 74%, which was noteworthy higher than that of the sodium acetate (CHCOONa) system at 42%; Microbial community analysis showed that Enteromorpha ferment liquid was more beneficial to the growth of Bacteroidetes than CHCOONa.
研究了新型浒苔厌氧发酵一体化固定膜活性污泥（IFAS-AFPD）部分反硝化的工艺性能。采用响应面法确定最佳反应条件，并在最佳条件下进行运行实验。结果表明，当盐度为12.2 g•L、碳氮比（C/N）为4、pH为8.5时，脱氮效果最佳，亚硝酸盐积累率、硝酸盐去除率、化学需氧量利用率分别可达77%、89%和51%。实验结果表明，浒苔发酵液系统的亚硝酸盐积累率可维持在74%左右，显著高于乙酸钠（CHCOONa）系统的42%；微生物群落分析表明，浒苔发酵液比CHCOONa更有利于拟杆菌的生长。
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