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Abstract：
Sewage sludge (SS) is a by-product of wastewater treatment plant (WWTP) operation. Due to fast rates of urbanization and industrialization, and rapid population growth, the world community faces a serious challenge associated with its disposal. There is an urgent need to explore low cost, energy efficient, and sustainable solutions for the treatment, management, and future utilization of SS. Thermal conversion of SS is considered the most promising alternative for sustainable SS management. Among three main thermochemical processes, it seems that gasification (GAS) of SS has the most advantages. The aim of this paper is a presentation of the gasification process as a sustainable method of SS management that takes into account the idea of a circular economy (CE). Gaseous fuel production, phosphorus recovery potential, and solid adsorbent production during the gasification process are analyzed and discussed. Result of this study shows that the lower heating value (LHV) of the gas from SS GAS process is up to 5 MJ/m3n and it can be effectively utilize in an internal combustion engines. The analysis proved that solid fraction after the SS GAS process can be treated as a valuable phosphorus source and perspective adsorbent materials. The amount of P2O5 in this material was equal to 22.06%. It is similar to natural phosphate rocks (28.05%). The maximum of the adsorption capacity of the phenol was comparable with commercial activated carbon (CAC): 42.22 mg/g for solid fraction after SS GAS and 49.72 mg/g for CAC. Graphical abstract.
摘要：
污水污泥(SS)是污水处理厂(WWTP)运行的副产品。由于城市化和工业化的快速发展，人口快速增长，国际社会面临着与处置有关的严峻挑战。迫切需要探索低成本，节能,以及治疗的可持续解决方案，管理,以及未来对SS的利用。SS的热转换被认为是可持续SS管理的最有希望的替代方案。在三个主要的热化学过程中，似乎SS的气化（GAS）具有最大的优势。本文的目的是介绍气化过程作为一种可持续的SS管理方法，该方法考虑了循环经济（CE）的思想。气体燃料生产，磷回收潜力，并对气化过程中固体吸附剂的生产进行了分析和讨论。这项研究的结果表明，低热值（LHV）的气体从SSGAS过程高达5MJ/m3n，它可以有效地利用在内燃机。分析证明，SSGAS工艺后的固体部分可以作为有价值的磷源和透视吸附材料。该材料中P2O5的量等于22.06%。它类似于天然磷矿（28.05％）。苯酚的最大吸附容量与商业活性炭（CAC）相当：SSGAS后的固体分数为42.22mg/g，CAC为49.72mg/g。图形抽象。
