Screening of algal based on temperature and nutrient fluctuation tolerance and its community nitrogen and phosphorus removal rate
ZENG Jie1,2, LIU Yu-ping1,2, FENG Jie1,2, ZHANG Qi-qi1,2, QIAN Lei1,2,3, LIU Jing1,2,4
1. State Environmental Protection Key Laboratory of Synergetic Control and Joint Remediation for Soil & Water Pollution(SEKL-SW), Chengdu University of Technology, Chengdu 610059, China; 2. College of Environment and Ecology, Chengdu University of Technology, Chengdu 610059, China; 3. Sichuan Academy of Environmental Sciences, Chengdu 610041, China; 4. State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu 610059, China
Abstract：Aiming at screening out the dominant algae species which can adapt to different temperatures and nutritional conditions, exploring the sewage treatment effect of microalgae community formed by their mixed culture, under the laboratory conditions, Chlorella sp., Scendesmus obliquus, Nitzschia sp., Chlamydomonas reinhardti and Cyclotella sp. were selected, at three different temperatures of 10, 20 and 30℃ and three different nutritional conditions, with TN and TP concentrations of 8.40 and 1.97 mg/L, 12.97 and 5.70mg/L, 60.22 mg/L and 18.19mg/L respectively. Three dominant algal species featuring good tolerance as well as removal of nitrogen and phosphorus at different temperatures and nutrients were screened. The dominant algal species were further selected for algal community collocation. Based on the removal effect and stability of nitrogen and phosphorus pollutants in artificial waste-water by different algal communities, the dominant algal communities were determined. The results showed that at three different temperatures, the growth condition of Cyclotella sp. and Nitzschia sp. was stable and the removal rate of nitrogen and phosphorus was generally over 80%; In three different nutritional conditions, only the growth rate and removal rate of nitrogen and phosphorus of Scendesmus obliquus was higher. To sum up, the environmental tolerance and removal rate of Scendesmus obliquus, Nitzschia sp. and Cyclotella sp. were better. The above three algae were combined with each other. The removal rate of TN and TP was about 80% and 90% by the community combination of Nitzschia sp. and Cyclotella sp., there was no abnormal changes; The growth of the communities of Scendesmus obliquus, Nitzschia sp. And Cyclotella sp.was stable.
曾劼, 刘雨萍, 冯杰, 张琪琪, 钱磊, 刘静. 温度与营养盐耐受藻种筛选及其群落氮磷去除研究[J]. 中国环境科学, 2021, 41(4): 1564-1575.
ZENG Jie, LIU Yu-ping, FENG Jie, ZHANG Qi-qi, QIAN Lei, LIU Jing. Screening of algal based on temperature and nutrient fluctuation tolerance and its community nitrogen and phosphorus removal rate. CHINA ENVIRONMENTAL SCIENCECE, 2021, 41(4): 1564-1575.
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