Stoica Alina, Sandberg Maria, Holby Ola
Department for Energy, Environmental and Building Technology, Karlstad University, 651 88 Karlstad, Sweden.
Bioresour Technol. 2009 Jul;100(14):3497-505. doi: 10.1016/j.biortech.2009.02.041.
This paper presents an inclusive approach with focus on energy use and recovery in wastewater management, including wastewater treatment (WWT) and sludge handling. Process data from three Swedish mills and a mathematical model were used to evaluate seven sludge handling strategies. The results indicate that excess energy use in WWT processes counters the potential energy recovery in the sludge handling systems. Energy use in WWT processes is recommended to aim for sufficient effluent treatment, not for sludge reduction. Increased secondary sludge production is favourable from an energy point of view provided it is used as a substrate for heat, biogas or electricity production.
本文提出了一种全面的方法，重点关注废水管理中的能源使用和回收，包括废水处理（WWT）和污泥处理。利用来自瑞典三家工厂的过程数据和一个数学模型来评估七种污泥处理策略。结果表明，废水处理过程中的过量能源使用抵消了污泥处理系统中的潜在能源回收。建议废水处理过程中的能源使用目标是实现足够的污水处理，而不是污泥减量。从能源角度来看，增加二次污泥产量是有利的，前提是将其用作生产热量、沼气或电力的底物。
