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ASP effluent and MBR effluent were tested to assess the effect of organics composition on DOM removal. MBR effluent had lower DOC and DON concentrations (Table 1). It also had lower DOC and DON contents in both BP and HS fractions (Table 2).

Table 2

Comparison of DOC and DON composition in ASP and MBR effluents

 DOC, ppb
DON, ppb
% DOC
% DON
BPHSBBLMWBPHSBBLMW
ASP 894.06 2,636.88 1,438.93 1,596.03 192.66 161.12 73.23 41.11 
14% 40% 22% 24% 41% 34% 16% 9% 
MBR 258.32 1,950.81 1,337.38 1,508.72 16.60 114.73 90.17 43.20 
5% 39% 26% 30% 6% 43% 34% 16% 
 DOC, ppb
DON, ppb
% DOC
% DON
BPHSBBLMWBPHSBBLMW
ASP 894.06 2,636.88 1,438.93 1,596.03 192.66 161.12 73.23 41.11 
14% 40% 22% 24% 41% 34% 16% 9% 
MBR 258.32 1,950.81 1,337.38 1,508.72 16.60 114.73 90.17 43.20 
5% 39% 26% 30% 6% 43% 34% 16% 

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