Key Laboratory for Eco-efficient Polysilicate Materials, School of Environment and Energy, Peking University Shenzhen Graduate School, Guangdong 518055, China.
Key Laboratory for Heavy Metal Pollution Control and Reutilization, School of Environment and Energy, Peking University Shenzhen Graduate School, Guangdong 518055, China.
Bioresour Technol. 2014 Sep;168:92-6. doi: 10.1016/j.biortech.2014.03.036. Epub 2014 Mar 21.
The aim of this work was to study a hybrid bioreactor landfill technology for landfill methane production from municipal solid waste. Two laboratory-scale columns were operated for about ten months to simulate an anaerobic and a hybrid landfill bioreactor, respectively. Leachate was recirculated into each column but aeration was conducted in the hybrid bioreactor during the first stage. Results showed that leachate pH in the anaerobic bioreactor maintained below 6.5, while in the hybrid bioreactor quickly increased from 5.6 to 7.0 due to the aeration. The temporary aeration resulted in lowering COD and BOD5 in the leachate. The volume of methane collected from the hybrid bioreactor was 400 times greater than that of the anaerobic bioreactor. Also, the methane production rate of the hybrid bioreactor was improved within a short period of time. After about 10 months' operation, the total methane production in the hybrid bioreactor was 212 L (16 L/kgwaste).
本工作旨在研究一种混合生物反应器垃圾填埋场技术，用于从城市固体废物中生产垃圾填埋甲烷。两个实验室规模的柱体运行了大约十个月，分别模拟了一个厌氧和一个混合垃圾填埋场生物反应器。渗滤液被回灌到每个柱体中，但在第一阶段，混合生物反应器进行了曝气。结果表明，厌氧生物反应器中的渗滤液 pH 值保持在 6.5 以下，而混合生物反应器中的渗滤液由于曝气而迅速从 5.6 增加到 7.0。临时曝气导致渗滤液中的 COD 和 BOD5 降低。从混合生物反应器收集的甲烷体积是厌氧生物反应器的 400 倍。此外，混合生物反应器的甲烷产率在短时间内得到了提高。经过大约 10 个月的运行，混合生物反应器的总甲烷产量为 212 L（16 L/kg 废物）。
