College of Environmental Science and Engineering, Hunan University and Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, Hunan 410082, China; Guangdong Provincial Key Laboratory of Petrochemical Pollution Processes and Control, School of Environmental Science and Engineering, Guangdong University of Petrochemical Technology, Maoming, Guangdong 525000, China.
College of Environmental Science and Engineering, Hunan University and Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, Hunan 410082, China; Guangdong Provincial Key Laboratory of Petrochemical Pollution Processes and Control, School of Environmental Science and Engineering, Guangdong University of Petrochemical Technology, Maoming, Guangdong 525000, China; Hunan Provincial Environmental Protection Engineering Center for Organic Pollution Control of Urban Water and Wastewater, Changsha, Hunan 410001, China.
Bioresour Technol. 2020 Dec;318:123858. doi: 10.1016/j.biortech.2020.123858. Epub 2020 Jul 16.
Constructed wetlands for swine wastewater treatment have been one of the most exciting research topics. Usually hydrophytes based constructed wetlands could not adapt well to high concentration of ammonia nitrogen in swine wastewater, while microalgal and duckweed based constructed wetlands are promising for the nutrient removal. In this critical review, the important roles of microalgae and duckweeds played in wastewater treatment in constructed wetlands were first summarized. Performances including biomass growth, nutrient removal capacities and mechanisms of microalgal and duckweed based constructed wetlands were reviewed for swine wastewater treatment. Challenges for the applications of constructed wetlands including microalgal and duckweed based ones were discussed which includes a better understanding and utilization of synergistic effects among microalgae and duckweeds, difficulty and costs in harvesting biomass, applications in various field conditions including low temperatures, and selections of various types of microalgal and duckweed species. Future research needs were also proposed accordingly.
人工湿地处理猪废水一直是最令人兴奋的研究课题之一。通常基于水生植物的人工湿地难以适应猪废水中高浓度的氨氮，而基于微藻和浮萍的人工湿地在养分去除方面具有广阔的前景。在这篇重要综述中，首先总结了微藻和浮萍在人工湿地废水处理中的重要作用。综述了基于微藻和浮萍的人工湿地在处理猪废水时的生物量生长、养分去除能力和机制等性能。讨论了人工湿地（包括基于微藻和浮萍的人工湿地）应用中面临的挑战，包括更好地理解和利用微藻和浮萍之间的协同作用、生物量收获的难度和成本、在包括低温在内的各种现场条件下的应用，以及各种类型的微藻和浮萍的选择。并相应地提出了未来的研究需求。
