Stuart-Dahl Savannah, Martinez-Guerra Edith, Kokabian Bahareh, Gude Veera Gnaneswar, Smith Renotta, Brooks John
Department of Civil and Environmental Engineering Mississippi State University Starkville MS USA.
Engineer Research and Development Center (ERDC) US Army Corps of Engineers Vicksburg MS USA.
Eng Life Sci. 2019 Nov 25;20(3-4):54-66. doi: 10.1002/elsc.201900048. eCollection 2020 Mar.
In this research, low strength synthetic wastewaters with chemical oxygen demand less than 300 mg L were treated at different concentrations in a bioelectrochemical desalination process. A process optimization model was utilized to study the performance of the photosynthetic bioelectrochemical desalination process. The variables include substrate (chemical oxygen demand) concentration, total dissolved solids, and microalgae biomass concentration in the cathode chamber. Relationships between the chemical oxygen demand concentration, microalgae, and salt concentrations were evaluated. Power densities and potential energy benefits from microalgal biomass growth were discussed. The results from this study demonstrated the reliability and reproducibility of the photosynthetic microbial desalination process performance followed by a response surface methodology optimization. This study also confirms the suitability of bioelectrochemical desalination process for treating low substrate wastewaters such as agricultural wastewaters, anaerobic digester effluents, and septic tank effluents for net energy production and water desalination.
在本研究中，采用生物电化学脱盐工艺处理化学需氧量低于300 mg/L的低强度合成废水，处理浓度各不相同。利用一个工艺优化模型来研究光合生物电化学脱盐工艺的性能。变量包括阴极室中的底物（化学需氧量）浓度、总溶解固体以及微藻生物量浓度。评估了化学需氧量浓度、微藻和盐浓度之间的关系。讨论了微藻生物量生长产生的功率密度和潜在能量效益。本研究结果证明了光合微生物脱盐工艺性能的可靠性和可重复性，随后采用响应面法进行了优化。本研究还证实了生物电化学脱盐工艺适用于处理低底物废水，如农业废水、厌氧消化池出水和化粪池出水，以实现净能量生产和水脱盐。
