污泥-生活垃圾混合填埋体降解产气过程

通过室内实验研究了不同污泥添加量条件下污泥-生活垃圾混合填埋体的产气过程，并建立了污泥-生活垃圾降解产气过程的动力学模型。研究结果表明，污泥-生活垃圾混合填埋体的产气过程分为三个阶段，即调整阶段、加速阶段和衰减阶段；随着污泥添加量的增加，累计产气量逐渐增大，但是当污泥添加量超过30%后，累计产气量逐渐减少；添加污泥后，产气过程的产甲烷阶段明显提前，并且降解产气中CH₄体积分数提高，缩短了填埋场达到稳定所需的时间；但是污泥对混合填埋体的降解速率的促进作用存在一定的范围，本实验中，污泥添加量为30%的混合填埋体的降解速率最快。

Gas generation process in sludge-municipal solid waste mixed landfill

The gas production process in sludge-municipal solid waste (MSW) mixture under different sludge addition conditions was studied through laboratory experiments, and a kinetic model of gas production process in the mixture degradation was established. Results show that the gas production process can be divided into three stages: adjustment stage, acceleration stage, and attenuation stage. With the increase in sludge amount, the cumulative gas production gradually increased, but when the sludge amount exceeded 30%, the cumulative gas production gradually decreased. With the addition of sludge, the methane production stage of the gas production process was significantly advanced, and the CH₄ content in the degradation gas production increased, which shortened the time required for the landfill to stabilize. However, there is a certain range for the amount of sludge that can be added. In the experiments, the mixture with 30% sludge amount exhibited the fastest degradation rate.