摘要：

以微波预处理污泥为底物，厌氧消化污泥为接种物，构建单室无膜微生物电解池（MEC）进行批式实验，考察外加电压对系统运行性能的影响。结果表明：在外加电压为0~1.2 V的范围内，系统甲烷产量、溶解性有机物（SCOD）去除率及挥发性悬浮物（VSS）去除率均随电压的升高而升高，最大值分别为286 mL、85.1%和59.6%，比0 V电压组分别提高了89.4%、56.9%和39.9%。更高的外加电压（1.6 V）则对微生物代谢活性产生抑制作用，导致系统运行性能下降。

关键词: 微波, 微生物电解池, 污泥, 外加电压

Abstract:

The single-chamber membrane-free microbial electrolysis cell(MEC) was constructed for batch experiment using microwave pretreated sludge and anaerobic digested sludge as substrate and inoculum, respectively. Different voltages were applied to investigate its influence on the running performance of MECs. The results showed that when the applied voltages in the range of 0 to 1.2 V, methane production, SCOD removal rate and VSS removal rate were increased gradually with improved voltage. The maximum methane production, SCOD removal rate and VSS removal rate were determined to be 286 mL, 85.1% and 59.6%. Compared with 0 V voltage group, they increased by 89.4%, 56.9%, and 39.9%, respectively. However, higher applied voltage(1.6 V) could inhibit the activities of anaerobic microorganisms, which resulted in the decrease of system running performance.

Key words: microwave, microbial electrolysis cell, sludge, applied voltage

中图分类号: 

• X703