%0 Journal Article
%T Removal of organic pollutants in secondary effluents by modified TiO2 pumice photocatalyst<br>改性TiO2/浮石光催化去除二级出水中有机物
%A Chen Miaoyin
%A Zhao Ling
%A Yin Pinghe
%A Zhou Tiehai
%A <br>陈淼银
%A 赵玲
%A 尹平河
%A 周铁海
%J 环境工程学报
%D 2012
%I 
%X In order to reuse the secondary effluents,the removal of organic pollutants in secondary effluents by modified TiO2 pumice photocatalyst was investigated.Under the optimum conditions,the reduction rate of TOC was 49.0%,and the UV254 was 76.5% in photocatalytic process.In this process,the BDOC/DOC increased from 0.21 to 0.56 and the macromolecular organics of water were broken down into low molecules which improved the effluents’ bio-degradability.Negative ion in water inhibited the organic pollutant’ removal rate.The process of TiO2/UV/O3 was much more efficient than TiO2/UV in removing TOC,which the removed rate reached to 75.0%.The both processes possessed synergetic action on organics’ removal.The photocatalytic activity decreased with the increasing of repeated use.After been used for ten times,the reduction rate decreased to 16.7%.The activity of used photocatalyst could resume 95% by certain regeneration method.The TiO2 catalyst kept effective during the continual use of 15 times.
%K photocatalysis
%K TiO2 pumice
%K secondary effluents
%K ozonation
%K regeneration<br>光催化
%K TiO2/浮石
%K 二级出水
%K 臭氧氧化
%K 再生
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=92E6F4267FD4CBCB51B1E49E014D8054&jid=3567BD61129AA59043F5DE01F8815DB5&aid=078384E9FE9084EA042FB82E99F09B91&yid=99E9153A83D4CB11&vid=B31275AF3241DB2D&iid=5D311CA918CA9A03&sid=F5D0A1CC082636E5&eid=9389FC0666CA3EC2&journal_id=1673-9108&journal_name=环境工程学报&referenced_num=0&reference_num=0