微藻-细菌的生物絮凝作用在促进微藻收获和去除废水中营养物质方面的作用。
Bioflocculation formation of microalgae-bacteria in enhancing microalgae harvesting and nutrient removal from wastewater effluent.
机构信息
University of Technology and Education, University of Danang, 48 Cao Thang St, 550000 Danang, Viet Nam.
Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet St, 10000 Hanoi, Viet Nam.
出版信息
Bioresour Technol. 2019 Jan;272:34-39. doi: 10.1016/j.biortech.2018.09.146. Epub 2018 Oct 2.
Microalgal bacterial flocs can be a promising approach for microalgae harvesting and wastewater treatment. The present study provides an insight on the bioflocs formation to enhance harvesting of Chlorella vulgaris and the removal of nutrients from seafood wastewater effluent. The results showed that the untreated seafood wastewater was the optimal culture medium for the cultivation and bioflocculation of C. vulgaris, with the flocculating activity of 92.0 ± 6.0%, total suspended solids removal of 93.0 ± 5.5%, and nutrient removal of 88.0 ± 2.2%. The bioflocs collected under this optimal condition contained dry matter of 107.2 ± 5.6 g·L and chlorophyll content of 25.5 ± 0.2 mg·L. The results were promising when compared to those obtained from the auto-flocculation process that induced by the addition of calcium chloride and pH adjustment. Additionally, bacteria present in the wastewater aided to promote the formation of bioflocculation process.
微藻细菌絮体是一种很有前途的微藻收获和废水处理方法。本研究深入了解生物絮体的形成，以增强小球藻的收获和从海鲜废水废水中去除营养物质。结果表明，未经处理的海鲜废水是小球藻培养和生物絮凝的最佳培养基，絮凝活性为 92.0±6.0%，总悬浮固体去除率为 93.0±5.5%，营养物质去除率为 88.0±2.2%。在最佳条件下收集的生物絮体含有 107.2±5.6 g·L 的干物质和 25.5±0.2 mg·L 的叶绿素含量。与通过添加氯化钙和调节 pH 值诱导的自絮凝过程相比，结果很有前景。此外，废水中存在的细菌有助于促进生物絮凝过程的形成。
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