Abstract
Ozone was selected in studying the variation of AOC in preoxidation process. AOC was increased by 86.9% with the increase of oxidant dosages after coagulation. The AOC was increased by 33.5% only in preoxidation before coagulation. More AOC-NOX, which represents carboxylic acids, was formed and constituted about 40% of AOC during O <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sub> preoxidation. The AOC/TOC ratio, which indicated assimilation ability of organic carbon, was increased from 8.2% to 16.7% in the preoxidations. The variation of TOC during O <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sub> preoxidation resulted from the variation of BDOC. The concentration of NBDOC changed little with the increase of oxidant dosages in the preoxidation processes. O <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sub> preoxidation exhibited better coagulation effect with the dosage less than 1.0 mg·L <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">-1</sup> .
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
