普通小球藻
光合反应器
化学需氧量
生物炼制
废水
制浆造纸工业
背景(考古学)
污水处理
生物量(生态学)
生化需氧量
环境科学
有机质
环境工程
生物
生物燃料
生物技术
藻类
农学
植物
生态学
工程类
古生物学
作者
Ruly Terán Hilares,Kiara A. García Bustos,Fabio Patricio Sanchez Vera,Gilberto de Jesús Colina Andrade,David A. Pacheco Tanaka
标识
DOI:10.1016/j.biortech.2021.125284
摘要
Poultry slaughterhouse wastewater (PSW) contains high organic matter and nutrients requiring thus a special treatment before its final disposal. In this work, acid precipitation (H2SO4) followed by microalgae “Chlorella vulgaris” cultivation both in batch and continuous processes was studied as an alternative method for PSW treatment. By reducing the pH value of PSW from 6 to 7 to 4, about 80% of the total chemical oxygen demand (CODT) was removed as sludge. In the supernatant, the COD residual was efficiently removed (83%) by microalgae in the batch process, using an internal-loop concentric tube photobioreactor (4.5 L). Moreover, in continuous process, after 89 h, the COD value resulted lower than 200 mg L-1 and 1.2 g L-1 of microalgae in the output line. The proposed PSW treatment method is promising from economic and environmental viewpoints, since the microalgal biomass can be valued in a biorefinery context.
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