Anaerobic baffled reactor coupled with membrane bioreactor treating tannery wastewater

Case Studies in Chemical and Environmental Engineering

Xuan-Thanh Bui¹  Quang-Huy Hoang²  Thanh-Tin Nguyen²  Phuong-Thao Nguyen²  Thi-Kim-Quyen Vo²  Trong B. Dang²  Cong-Sac Tran²  Kim-Qui Nguyen²  Linh-Thy Le² 

[1] School of Earth Sciences and Environmental Engineering, Gwangju Institute of Science and Technology, 123 Cheomdangwagi-ro, Buk-gu, Gwangju, 61005, Republic of Korea;Key Laboratory of Advanced Waste Treatment Technology, Ho Chi Minh City University of Technology (HCMUT), Vietnam National University Ho Chi Minh (VNU-HCM), Linh Trung Ward, Thu Duc City, Ho Chi Minh City, Viet Nam;

关键词: Anaerobic baffled reactor;    Membrane filtration;    Tannery wastewater;    Membrane fouling;   

DOI  :  

来源: DOAJ

【 摘 要 】

Tannery wastewater contains high levels of the organic, inorganic, nitrogenous compound, suspended solids, dissolved solids, and other contaminants (Sulfide, chromium). Anaerobic Baffled Reactor-Membrane Bioreactor (ABR-MBR) system has been introduced as a promising technology for domestic wastewater treatment thanks to its sufficient organic treatment and low energy requirement. This work aimed to evaluate the performance and fouling behavior of the ABR-MBR system for tannery wastewater treatment during 60 d of operation. The ABR system was operated at an organic loading rate (OLR) of 3 kgCOD/m3. d while a low flux of 0.75 LMH was retained in the MBR. The results showed that the total COD removal was 89 ± 1% while the NH4+- N removal ranged from 28 to 33%. The fouling rate of MBR was from 5.14 to 6.18 kPa/d. The fouling degree became severe and this fact could be due to some matters: i) wastewater containing high salinity concentration (around 14,600 mg/L), ii) operation at high MLSS in MBR (over 10,000 mg/L), iii) and a short period of aeration time (1–3 min run: 7–9 min relaxation). Overall findings highlighted that the proposed ABR-MBR process could favor minimizing organic matter significantly.

【 授权许可】

Unknown