微电压强化热水解污泥厌氧消化产甲烷速率研究  

Study on methane production rate of thermal hydrolysis sludge enhanced by micro-voltage

作　　者：李伟[1] 杨黎俊 王佳伟[1] 齐利格娃 姚宏[2] 蔡伟伟 Li Wei;Yang Lijun;Wang Jiawei;Qi Ligewa;Yao Hong;Cai Weiwei(Beijing Drainge Group Technology Research and Development Center,Beijing Watewater Resourceful Engineering Technology Research Center,Beijing 100024,China;School of Civil Engineering,Beijing Jiaotong University,Beijing 100144,China)

机构地区：[1]北京城市排水集团有限责任公司科技研发中心,北京市污水资源化工程技术研究中心,北京100124 [2]北京交通大学土木建筑工程学院,北京100044

出　　处：《给水排水》2021年第12期30-34,53,共6页Water & Wastewater Engineering

基　　金：国家自然科学基金(51908030)。

摘　　要：分别采用碳纤维和不锈钢作为阴阳极加入到厌氧消化装置,在有微电压驱动条件下,能够显著性提高热水解厌氧消化的产甲烷速率,在有外加0.8 V电压条件下,电流稳定在4 mA左右,最大产甲烷速率比空白组高1.78倍,比未加电压的对照组高1.39倍。在放大的试验中,进一步研究了外加电压对产甲烷速率的影响,电流值范围1.5~3.5 mA,产甲烷速率最高为0.18 mL/(d·mL反应体积)。结果显示外部微电压可提高厌氧消化产甲烷的速率,厌氧消化过程中碳氢化合物的浓度是影响微电压性能的关键因素。As the anode carbon and stainless steel were used respectively to join the anaerobic digestion device in the voltage driving conditions, can significantly improve the thermal hydrolysis anaerobic digestion rate of methane production, under the condition of a plus 0.8 V voltage, electric current stable at around 4 mA. The maximum methane-producing rate was 1.78 times higher than the blank group, 1.39 times higher than that in the control group without voltage. In the amplified experiment, the effect of applied voltage on methane production rate was further studied. The current value ranged from 1.5 to 3.5 mA, and the methane production rate was up to 0.18 mL/(d ·mL reaction volume).The results show that the external micro-voltage can improve the rate of methane production during anaerobic digestion, but the concentration of hydrocarbons is still a key factor affecting the performance of micro-voltage.

关 键 词：污泥 厌氧消化 甲烷 微电压 热水解 

分 类 号：TU992[建筑科学—市政工程] X703[环境科学与工程—环境工程]