Effect of preozonation on biological stability and organic matter removal from water

Journal of Shanghai Normal University (Natural Sciences)

ZHANG Hongzhuan¹  LIANG Xiaotian¹  ZHANG Xinhua¹  GAO Naiyun²  ZHANG Yongming³ 

[1] College of Civil Engineering，Shanghai Normal University;College of Environmental Science and Engineering，TongJi University;College of Life and Environmental Sciences，Shanghai Normal University;

关键词: ozone;    organic matter;    biological stability;    drinking water;    pretreatment;    water treatment;   

DOI  :  10.3969/J.ISSN.1000-5137.2014.06.015

来源: DOAJ

【 摘 要 】

Both preozonation and prechlorination processes were adopted before the conventional drinking water treatment process,and the raw water for each was taken from upstream of Huangpu River.The comparative pilot experiments were conducted at a scale of 1.0 m3·h-1 for each.CODMn,UV254,TOC,and AOC of the finished water were determined after the preozonation process,compared with those after the prechlorination process.The Effect of the preozonation process on organic material removal from water was studied.The biological stability of the finished water after the preozonation process was analyzed.The results show that when CODMn in raw water was 5.56~6.50 m3·L-1,CODMn removal efficiency and UV254 removal rate by pre-ozonation process increased by 2.5% and 6%,respectively,compared with those by pre-chlorination process.TOC removal efficiencies by both processes were not high.AOC in the finished water after the preozonation process was higher obviously than that after the prechlorination process.

【 授权许可】

Unknown