An annular photobioreactor with ion-exchange-membrane for non-touch microalgae cultivation with wastewater

作者：Chang, Hai-Xing; Fu, Qian^*; Huang, Yun; Xia, Ao; Liao, Qiang; Zhu, Xun; Zheng, Ya-Ping; Sun, Chi-He

来源：Bioresource Technology, 2016, 219: 668-676.

DOI：10.1016/j.biortech.2016.08.032

• Ion-exchange-membrane
• Microalgae
• Nutrient removal
• Photobioreactor
• Wastewater treatment

To eliminate the negative impacts of pollutants in wastewater (such as suspended solids, excess N, P, heavy metals) on microalgae growth, an annular ion-exchange-membrane photobioreactor (IEM-PBR) was proposed in this study. The IEM-PBR could avoid direct mixing of algae cells with wastewater by separating them into two chambers. In the IEM-PBR, the nutrients (mainly N and P) in wastewater continuously permeated into microalgae cultures through the ion-exchange-membrane for microalgae growth, while the pollutants hardly permeated into microalgae cultures. Three types of representative wastewater were investigated to evaluate the performance of the IEM-PBR. When cultivated with wastewater containing excess nutrients, high turbidity and excess heavy metals, microalgae biomass concentrations were significantly improved from 2.34, 2.15 and 0 g L-1 in the traditional PBR to 4.24, 3.13 and 2.04 g L-1 in the IEM-PBR. Correspondingly, the removal efficiencies of N and P in wastewater were also greatly improved by using the IEM-PBR.

• 出版日期2016-11
• 单位重庆大学