沼渣
环境科学
制浆造纸工业
营养物
磷
化学
环境化学
厌氧消化
工程类
有机化学
甲烷
作者
Longzao Luo,Xiaoai Lin,Miao Li,Xing Liao,Bangxi Zhang,Yujie Hu,Yufeng Wang,Yan Huang,Changsheng Peng
标识
DOI:10.1080/09593330.2022.2026485
摘要
Microalgae show great potential for nutrient removal from piggery digestate. However, full-strength piggery digestate have been found to severely inhibit microalgal growth. In this study, microalgae were coupled into the electric field (EF)system to form an electric field-microalgae system (EFMS). The effects of EF characteristics and environmental conditions on the growth of Desmodesmus sp. CHX1 and the removal of nitrogen and phosphorus in EFMS were explored. The results indicated that the optimal EF parameters for forming a fine EFMS were electrode of Zn (anode)/graphite (cathode), electric frequency of three times per day (10 min/time) and voltage of 12 V. The suitable light intensity and microalgae inoculation concentration for the EFMS were 180 μmol photons/(m2·s) and 0.2 g/L, respectively. Ammonium nitrogen and total phosphorus removal efficiencies were 65.38% and 96.16% in the piggery digestate by EFMS under optimal conditions. These results indicate that EFMS is a promising technology for nutrient removal from piggery digestate.
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