Advanced Sustainable Systems, Journal Year: 2025, Volume and Issue: unknown
Published: May 5, 2025
Abstract Municipal wastewater treatment philosophy shall shift from the conventional energy‐ and chemical‐intensive approach to a more circular, energy self‐sufficient system aligned with Sustainable Development Goals (SDGs) 7, 9, 11, 13. Direct membrane filtration (DMF) using ultrafiltration provides low‐energy alternative for recovering organics, which are utilized recovery through anaerobic digestion (AD). However, DMF faces challenges fouling elevated dissolved organics in permeate. To address these issues, this study implements biological contact tank pre‐treatment before DMF, short hydraulic retention time (HRT) of 60 min. This selectively removes 62% without compromising suspended or colloidal organic matter enhances permeate quality by 40% terms chemical oxygen demand (COD). The exhibits 1.84 times higher irreversible pore‐blocking resistance, foulant concentrations per unit area (up 2.54 times) enzymatic activity 3.04 times). recovered undergo AD, yielding methane up 336 ± 23 mL‐CH 4 /g‐VS, making net positive. Life cycle assessment (LCA) reveals that has lesser environmental impacts than 10 out 18 impact categories.
Language: Английский