Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science & Engineering, Shandong University, Qingdao 266237, China.
Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science & Engineering, Shandong University, Qingdao 266237, China; Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Sydney, NSW 2007, Australia.
Bioresour Technol. 2020 Jul;308:123320. doi: 10.1016/j.biortech.2020.123320. Epub 2020 Apr 6.
Non-suspended microalgae cultivation technology coupled with wastewater purification has received more scientific attention in recent decades. Since the non-suspended microalgae cultivation is quite different from the suspended ones, the following issues are compared in this study such as advantages and disadvantages, pollutant removal mechanisms and regulations, influential factors, and microalgae biomass accumulation. The analysis aims to support the further application of this technology. The median removal rates of COD, TN, TP, NH-N and NO-N were 91.6%, 78.2%, 87.5%, 93.2% and 81.7%, respectively, by non-suspended microalgae under the TN & TP load rates up to 150 mg·L·d. The main pathway for TN & TP removal is microalgae cell absorbance. Light intensity, pollutant composition and microalgae metabolic types are the major factors that influence pollutant removal and the lipid content of microalgae. Meanwhile the mechanism concerning how macro-outer conditions influence the micro-environment and further growth of non-suspended microalgae requires more investigation.
近几十年来，非悬浮微藻培养技术与废水净化相结合受到了更多的科学关注。由于非悬浮微藻培养与悬浮微藻培养有很大的不同，因此本研究比较了它们的优缺点、污染物去除机制和规律、影响因素以及微藻生物质积累等方面。分析的目的是为这项技术的进一步应用提供支持。在 TN 和 TP 负荷分别高达 150 mg·L·d 的条件下，非悬浮微藻对 COD、TN、TP、NH-N 和 NO-N 的去除率中位数分别为 91.6%、78.2%、87.5%、93.2%和 81.7%。TN 和 TP 的主要去除途径是微藻细胞吸收。光照强度、污染物成分和微藻代谢类型是影响污染物去除和微藻中脂质含量的主要因素。同时，宏观外部条件如何影响非悬浮微藻的微环境和进一步生长的机制还需要进一步研究。
