Treatment of textile wastewater in a single-step moving bed-membrane bioreactor: Comparison with conventional membrane bioreactor in terms of performance and membrane fouling
Water and Environment Journal, cilt.38, sa.3, ss.465-480, 2024 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 38 Sayı: 3
- Basım Tarihi: 2024
- Doi Numarası: 10.1111/wej.12942
- Dergi Adı: Water and Environment Journal
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Agricultural & Environmental Science Database, Applied Science & Technology Source, Aqualine, Aquatic Science & Fisheries Abstracts (ASFA), CAB Abstracts, Compendex, Computer & Applied Sciences, Environment Index, Geobase, Greenfile, INSPEC, Pollution Abstracts, Veterinary Science Database
- Sayfa Sayıları: ss.465-480
- Anahtar Kelimeler: membrane fouling, moving-bed membrane bioreactor, textile wastewater, traditional membrane bioreactor, treatment performance
- Yıldız Teknik Üniversitesi Adresli: Evet
Özet
Membrane bioreactor (MBR) is a promising technology for the treatment of municipal and industrial wastewater, including highly contaminated textile wastewater. However, membrane fouling remains a critical challenge due to reduced flux. This study investigates the efficacy of a moving bed MBR (MB-MBR) technology for textile wastewater treatment, focusing on chemical oxygen demand (COD) removal, and its impact on mitigating membrane fouling. In a 50-day study, a conventional MBR (R1) was compared with an MB-MBR (R2) augmented with free-floating biocarriers (accounting for 20% of the reactor volume). Both systems used flat sheet ceramic membrane modules. The results indicate that the MB-MBR achieved superior performance, with COD and colour removal of 89% and 81%, respectively, compared with 87% and 73% in the conventional MBR. Importantly, the introduction of biocarriers eliminated the need for offline physical membrane cleaning in the MB-MBR. The free-floating biocarriers lowered transmembrane pressure, reduced capillary suction time and reduced fouling through their scouring action.