Qingdao Solid Waste Pollution Control and Recycling Engineering Research Center, School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao 266520, China; School of Ecological and Environmental Sciences, East China Normal University, 200241 Shanghai, China; College of Environmental Science and Engineering, Hunan University, Changsha 410082, China.
Qingdao Solid Waste Pollution Control and Recycling Engineering Research Center, School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao 266520, China.
Bioresour Technol. 2023 Feb;370:128534. doi: 10.1016/j.biortech.2022.128534. Epub 2022 Dec 24.
This work investigated the effect of calcium hypochlorite (CH) coupled aged refuse (AR) treatment on the enhanced hydrogen generation from sludge anaerobic dark fermentation (SADF). The enhanced mechanism was systematically revealed through sludge disintegration, organic matter biotransformation, and microbial community characteristics, etc. The experimental data showed that CH coupled AR increased the hydrogen yield to 18.1 mL/g, significantly higher than that in the AR or CH group alone. Mechanistic analysis showed that CH-coupled AR significantly promoted sludge disintegration and hydrolysis processes, providing sufficient material for hydrogen-producing bacteria. Microbiological analysis showed that CH-coupled AR increased the relative abundance of responsible hydrogen-producing microorganisms. In addition, CH-coupled AR was very effective in reducing phosphate content in the fermentation liquid and fecal coliforms in the digestate, thus facilitating the subsequent treatment of fermentation broth and digestate. CH coupled AR is an alternative strategy to increase hydrogen production from sludge.
本研究考察了次氯酸钙（CH）与陈腐垃圾（AR）耦合处理对污泥厌氧暗发酵（SADF）强化产氢的影响。通过污泥破解、有机质生物转化和微生物群落特征等方面，系统揭示了强化机制。实验数据表明，CH 与 AR 耦合提高了氢气产率至 18.1 mL/g，明显高于 AR 或 CH 单独处理组。机理分析表明，CH 与 AR 耦合显著促进了污泥的破解和水解过程，为产氢菌提供了充足的物质基础。微生物分析表明，CH 与 AR 耦合增加了负责产氢微生物的相对丰度。此外，CH 与 AR 耦合还能有效降低发酵液中的磷酸盐含量和粪大肠菌群数量，从而有利于后续发酵液和消化液的处理。CH 与 AR 耦合是提高污泥产氢的一种替代策略。
