title: Removal of nutrients from undiluted anaerobically treated piggery wastewater by improved microalgae.
abstract: This study aimed at improving the adaptability and biodegradability of tested microalgae in undiluted anaerobic fermentation slurry of piggery wastewater. For that, a two-stage method based on UV irradiation followed by gradual domestication was developed. The distinctness of this method was the elimination of a screening procedure and just needed the UV-irradiated cells with appropriate survival to be subjected to gradual domestication. The microalgae treated with the method not only grew well in undiluted slurry, but achieved outstanding removal efficiencies in total nitrogen (TN) and total phosphorus (TP). Large-scale application was conducted in an open raceway pond, and the concentrations of TN and TP after treatment were 43.80mg/L (removal rate of 89.5%) and 5.83mg/L (removal rate of 85.3%) respectively, which greatly excelled the Chinese discharge standards for livestock and poultry wastewater. The strategy is therefore a promising method for microalgae to purify piggery slurry containing high nutrient contents.
authors.affiliation: College of Life Sciences, Fujian Normal University, Fuzhou 350117, China; Engineering Research Center of Industrial Microbiology of Ministry of Education, Fujian Normal University, Fuzhou 350117, China; Center of Fujian Modern Fermentation Technology and Engineering, Fuzhou 350117, China. Electronic address: mingziw@fjnu.edu.cn.
authors.forename: Mingzi
authors.initials: M
authors.lastname: Wang
authors.affiliation: College of Life Sciences, Fujian Normal University, Fuzhou 350117, China; Fuzhou Clean Biotech Co., Ltd., Fuzhou 350117, China.
authors.forename: Yi
authors.initials: Y
authors.lastname: Yang
authors.affiliation: College of Life Sciences, Fujian Normal University, Fuzhou 350117, China.
authors.forename: Zhihong
authors.initials: Z
authors.lastname: Chen
authors.affiliation: College of Life Sciences, Fujian Normal University, Fuzhou 350117, China.
authors.forename: Yanzhen
authors.initials: Y
authors.lastname: Chen
authors.affiliation: College of Life Sciences, Fujian Normal University, Fuzhou 350117, China.
authors.forename: Yangmin
authors.initials: Y
authors.lastname: Wen
authors.affiliation: College of Life Sciences, Fujian Normal University, Fuzhou 350117, China; Engineering Research Center of Industrial Microbiology of Ministry of Education, Fujian Normal University, Fuzhou 350117, China; Center of Fujian Modern Fermentation Technology and Engineering, Fuzhou 350117, China.
authors.forename: Bilian
authors.initials: B
authors.lastname: Chen
mesh_terms: D000693:Anaerobiosis; D000818:Animals; D001673:Biodegradation, Environmental; D008372:Manure; D058086:Microalgae / Q000378:metabolism* / Q000528:radiation effects; D009584:Nitrogen / Q000302:isolation & purification / Q000378:metabolism; D010758:Phosphorus / Q000302:isolation & purification / Q000378:metabolism; D013552:Swine; D014466:Ultraviolet Rays; D014865:Waste Disposal, Fluid / Q000379:methods*; D062065:Wastewater / Q000737:chemistry
chemical_list: D008372:Manure; D009584:Nitrogen; D010758:Phosphorus; D062065:Wastewater
keywords: Large-scale application; Microalgae; Nitrogen; Phosphorus; Piggery slurry