Cosenza Alida, Gulhan Hazal, Maida Carmelo Massimo, Mannina Giorgio
Engineering Department - Palermo University, Viale delle Scienze, Ed. 8, 90128 Palermo, Italy.
Engineering Department - Palermo University, Viale delle Scienze, Ed. 8, 90128 Palermo, Italy; Environmental Engineering Department, Civil Engineering Faculty, Istanbul Technical University, Ayazaga Campus, Maslak, 34469 Istanbul, Turkey.
Bioresour Technol. 2022 Nov;363:127929. doi: 10.1016/j.biortech.2022.127929. Epub 2022 Sep 10.
The study aims to recover nitrogen from wastewater by employing ultrafiltration membrane in water reuse for agriculture purpose. To such aim, a new reclaimed water quality index (RWQI) is proposed and applied including an innovative protocol for its assessment. Specifically, the influence of filtration and backwashing times for an ultrafiltration system aimed to nutrient recovery has been analyzed. The final goal was to pin down the trade-off between operation costs and effluent quality. Results show that backwashing time play a crucial role in reducing the operation costs; indeed, low values (i.e., 0.5 min) lead to an increase in the number of required chemical cleanings and consequently operation costs (namely, up to 0.042 €/m). The compromise among effluent quality and operation costs has been obtained for 7 min and 1 min, filtration and backwashing, respectively.
该研究旨在通过采用超滤膜从废水中回收氮，用于农业用水再利用。为此，提出并应用了一种新的再生水水质指标（RWQI），包括一种创新的评估方案。具体而言，分析了旨在实现养分回收的超滤系统的过滤和反洗时间的影响。最终目标是确定运营成本与出水水质之间的权衡。结果表明，反洗时间在降低运营成本方面起着关键作用；实际上，低值（即0.5分钟）会导致所需化学清洗次数增加，从而增加运营成本（即高达0.042欧元/立方米）。分别在过滤7分钟和反洗1分钟时实现了出水水质与运营成本之间的折衷。
