Engineering Commons^™

Choice Of Sewage Sludge Thermochemical Disposal Methods From Multi‐ Perspective Analysis, Dezhen Chen, Min Yang, Yuyan Hu

Life Cycle Assessment and Other Assessment Tools for Waste Management and Resource Optimization

Thermochemical conversion disposal methods for sewage sludge usually include incineration, gasification and pyrolysis. Incineration technology is relatively mature and the incineration ash can be potentially used for phosphorus (P) recovery. Gasification can be used to recover syngas which is convenient to be used for power & heat generation. While through pyrolysis, syngas of high quality, tar and char can be recovered. To make a proper choice from them, these techniques are compared from perspective of technology maturity, investment, operation cost, environmental impact and acceptability of the public. Technology maturity is evaluated by comparing industrial applications. Investment and operation cost are …