Effects of High Salinity on the Removal of Pollutants in Wastewater by Aerobic Granular Sludge

Abstract:

The aerobic granular sludge (AGS) was used to remove pollutants (COD, NH₃-N, TN and TP) in wastewater under different salinity in a sequencing batch reactor (SBR). The results show that: the salinity has a significant impact on the removal of COD and TN, and the removal rate declines to 60% and 56% respectively when the water salinity rises from 5g/L to15g/L. The NH₃-N removal is not much affected by the salinity, and the average removal rate is 75%. TP removal rate changes little at low-salted environment (the salinity less than 10g/L), however, the rate declines heavily when the salinity gets more than 10g/L, 70% in 10g/L and 57% in 15g/L.

• Periodical: Advanced Materials Research (Volumes 955-959)
• Pages: 339-342
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.955-959.339
• Online since: June 2014
• Authors: Xin Gang Wang*, Bing Lin, Yu Bin Tang, Hai Feng Chen
• Keywords: Aerobic Granular Sludge, Salinity, Sequencing Batch Reactor

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