Effect of Synthetic Wastewater by Electrochemical Pretreatment on Chlorella vulgaris Growth and Nutrients Removal

Abstract:

Electrochemical processing combined with the system of microalgae Chlorella vulgaris was used to treat the synthetic organic wastewater in this paper. The effect of wastewater concentration on the biomass growth and nutrients removal was investigated. Three levels of the wastewater concentrations were ranked as Low, Mid and High, respectively. After 2 h of electrolysis pretreatment and 10 d of microalgae cultivation, TOC, NH₄-N, and TP concentrations in the group Low were reduced by 83.7%, 99.3% and 95.0%, respectively. The Chlorella vulgaris in the groups Mid and High without electrolysis pretreatment did not survive longer than 24 h, whereas it grown well in the wastewater pretreated by electrolysis. The dry weight (DW) of Chlorella vulgaris in the group Low with electrolysis pretreatment was increased from 0.048 g/l to 1.087 g/l by 10 d cultivation. Results indicate that electrolysis pretreatment for wastewater can provide appropriate conditions for the subsequent biological treatment and efficiently promote the biomass growth of Chlorella vulgaris.

• Periodical: Advanced Materials Research (Volume 666)
• Pages: 33-42
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.666.33
• Online since: February 2013
• Authors: Meng Zi Wang, Zhi Wei Zhu, Wei Cao, Hong De Zhou, Yu Wu, Bao Ming Li, Yuan Hui Zhang
• Keywords: Chlorella vulgaris, Electrochemical Pretreatment, Nutrient Removal, Wastewater Treatment

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