LIUJian-lin,XIEJie,CHENJia-hao.Application of Membrane Fenton/BAC/BAF Integrated Process in Advanced Reverse Osmosis Brine Treatment[J].China Water & Wastewater,2023,39(6):108-112.
Application of Membrane Fenton/BAC/BAF Integrated Process in Advanced Reverse Osmosis Brine Treatment
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第39卷
Number:
第6期
Page:
108-112
Column:
Date of publication:
2023-03-17
- Keywords:
- reverse osmosis brine; membrane Fenton; BAC; BAF
- Abstract:
- A newly invented integrated wastewater treatment process comprised of membrane Fenton/BAC/(or) BAF was adopted to treat the concentrated brine from the reverse osmosis in water reclamation system. The brine was characterized as containing high concentration organics, high color , high salinity and poor biodegradability, which was often found difficult to treat using conventional technologies. The novel process was experimented in a textile industrial wastewater treatment and recycling plant. Pilot-scale test results showed that membrane Fenton exhibited remarkable performance on COD removal. In addition, the biodegradability of effluent was significantly improved in line with the dosage of Fenton reagents. As a result, the downstream BAF or BAC could completely degrade more biodegradable organics including organic-nitrogen in membrane Fenton effluent, and the removal efficiency of TN very much depends on the amount of biodegradable COD in membrane Fenton effluent. The combined process of membrane Fenton/BAC/BAF had the advantages such as excellent removal of wide range of pollutants, low treatment cost, stable operation and resilience to load fluctuation. The RO brine treatment produced excellent final effluent quality, for example, COD, TP, TN and NH3-N were reduced to 20-40 mg/L, less than 0.1 mg/L, 5-9 mg/L and less than 0.5 mg/L, with removal efficiencies up to 86.0%, 97.9%, 69.3% and 90.5%, respectively.
Last Update:
2023-03-17