The control of dissolved methane (CH₄) and hydrogen sulfide (H₂S) emissions in anaerobic effluents is essential for minimizing the environmental implications of greenhouse gases, odor, and carbon footprint, as well as for preventing energy loss in the form of unrecovered dissolved methane. This study assessed the feasibility of a vacuum degasifier for the removal of CH₄ and H₂S from staged anaerobic fluidized membrane bioreactor (SAF-MBR) effluent. The optimization results showed that the efficiency of the nozzle fitted degasifiers were superior to the media packed ones. In three-stage vacuum degasifiers at a −0.8 bar vacuum pressure, H₂S removal was mostly pH dependent and 88% removal efficiency was achieved with an initial concentration of 13.6 mg/L. Methane removal was dependent primarily on the number of degasifier units, and approximately 94% efficiency was achieved in a three-stage degasifier. Energy balance analysis showed that energy production exceeded the system energy requirements with 0.05–0.07 kWh/m³ of surplus energy. These results provide deep insights into this new technology for simultaneous removal of dissolved CH₄ and H₂S, which can be referred for potential future applications.

控制厌氧废水中溶解的甲烷（CH ₄）和硫化氢（H ₂ S）排放对于最大限度地减少温室气体，气味和碳足迹的环境影响以及防止未回收形式的能量损失至关重要溶解的甲烷。这项研究评估了真空脱气机从分阶段厌氧流化膜生物反应器（SAF-MBR）废水中去除CH ₄和H ₂ S的可行性。优化结果表明，装有喷嘴的脱气机的效率优于填料的脱气机。在三级真空脱气机中，真空压力为-0.8 bar，H ₂S的去除主要取决于pH，初始浓度为13.6 mg / L时，去除率达到88％。甲烷的去除主要取决于脱气器的数量，三级脱气器的效率约为94％。能量平衡分析表明，能量生产超出系统能量需求，剩余能量为0.05–0.07 kWh / m ³。这些结果为这种同时去除溶解的CH ₄和H ₂ S的新技术提供了深刻的见识，可为将来的潜在应用提供参考。