Dissolved methane in anaerobic effluent: Emission or recovery?
Xiaoyuan Zhang1, Jun Gu2, Shujuan Meng3, Yu Liu1,4()
1. Advanced Environmental Biotechnology Centre, Nanyang Environment & Water Research Institute, Nanyang Technological University, Singapore 637141, Singapore 2. Department of Environmental Science and Engineering, School of Energy and Environment, Southeast University, Nanjing 210096, China 3. School of Space and Environment, Beihang University, Beijing 100191, China 4. School of Civil and Environmental Engineering, Nanyang Technological University, Singapore 639798, Singapore
Various anaerobic processes have been explored for the energy-efficient treatment of municipal wastewater. However, dissolved methane in anaerobic effluent appears to be a barrier towards the energy and carbon neutrality of wastewater treatment. Although several dissolved methane recovery methods have been developed, their engineering feasibility and economic viability have not yet been assessed in a holistic manner. In this perspective, we thus intend to offer additional insights into the cost-benefit of dissolved methane recovery against its emission.
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