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Effect of Membranes on Refractory Dissolved Organic Nitrogen
A 500‐day comparative study with a novel membrane bioreactor (NMBR), anaerobic‐anoxic‐aerobic (A2/O) process, and University of Cape Town‐adapted MBR (UMBR) investigated the effect of membrane on effluent dissolved organic nitrogen (efDON) using synthetic (SWW) and municipal wastewater (MWW). The runs, comparing an NMBR and A2/O process, indicated 0.3 mg/L lower efDON in the former than the latter. However, NMBR and UMBR achieved similar efDON quality, with an average of 0.8 mg/L, and the DON reduction by membrane averaged 0.4 mg/L, while the A2/O efDON was slightly higher than DON in the aeration tank, by 0.08 mg/L, on average. The efDON during the MWW run increased by as much as 0.8 mg/L compared with the SWW run. The efDON is a component of a protein found in soluble microbial products, and it followed a cyclical temporal pattern during the runs. Membrane fouling propensity increased the efDON. This study presents evidence that membranes are effective in reducing efDON.
Effect of Membranes on Refractory Dissolved Organic Nitrogen
A 500‐day comparative study with a novel membrane bioreactor (NMBR), anaerobic‐anoxic‐aerobic (A2/O) process, and University of Cape Town‐adapted MBR (UMBR) investigated the effect of membrane on effluent dissolved organic nitrogen (efDON) using synthetic (SWW) and municipal wastewater (MWW). The runs, comparing an NMBR and A2/O process, indicated 0.3 mg/L lower efDON in the former than the latter. However, NMBR and UMBR achieved similar efDON quality, with an average of 0.8 mg/L, and the DON reduction by membrane averaged 0.4 mg/L, while the A2/O efDON was slightly higher than DON in the aeration tank, by 0.08 mg/L, on average. The efDON during the MWW run increased by as much as 0.8 mg/L compared with the SWW run. The efDON is a component of a protein found in soluble microbial products, and it followed a cyclical temporal pattern during the runs. Membrane fouling propensity increased the efDON. This study presents evidence that membranes are effective in reducing efDON.
Effect of Membranes on Refractory Dissolved Organic Nitrogen
Kim, MinGu (author) / Nakhla, George (author)
Water Environment Research ; 82 ; 281-288
2010-03-01
8 pages
Article (Journal)
Electronic Resource
English
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