Wilsenach J, van Loosdrecht M
Department of Biochemical Engineering, Delft University of Technology, Julianalaan 67, 2628 BC, The Netherlands.
Water Sci Technol. 2003;48(1):103-10.
Wastewater treatment should not only be concerned with urban hygiene and environmental protection, but development of a sustainable society must also be considered. This implies a minimisation of the energy demand and potential recovery of finite minerals. Urine contains 80% of the nitrogen (N) and 45% of the phosphorus (P) in wastewater. Separate collection and treatment would improve effluent quality and save energy in centralised biological nutrient removal (BNR). BNR processes are not optimal to treat water with very low N concentration resulting from separate urine collection. Relying on nutrient removal through sludge production, methanation of the sludge, subsequent nutrient removal from the digestion effluent results in optimised and more sustainable wastewater treatment. This paper quantitatively evaluates this option and discusses the potential.
废水处理不仅应关注城市卫生和环境保护，还必须考虑可持续社会的发展。这意味着要将能源需求降至最低，并实现有限矿物质的潜在回收。尿液中含有废水中80%的氮（N）和45%的磷（P）。单独收集和处理将提高出水质量，并在集中式生物营养物去除（BNR）中节省能源。BNR工艺对于处理因单独收集尿液而导致氮浓度极低的水并非最佳选择。依靠通过污泥生产进行营养物去除、污泥的甲烷化，随后从消化液中去除营养物，可实现优化且更可持续的废水处理。本文对该方案进行了定量评估并探讨了其潜力。
