摘要
颗粒活性炭(GAC)既可以作为吸附剂,又能作为催化剂。研究利用GAC、过氧化氢(H2O)2、紫外(UV)三者联合深度处理二级出水。采用连续流反应器,对比了GAC/H2O2/UV联合体系与GAC、UV、H2O2、GAC/UV、GAC/H2O2、UV/H2O2条件下溶解性有机物的降解效果,并重点探讨GAC对H2O2的催化作用、UV对H2O2的分解作用在联合体系中的贡献。结果表明,GAC/H2O2/UV联合连续降解效果明显高于其它条件下的降解效果;停留时间越长,降解率越高;虽GAC可催化H2O2,但UV/H2O2在联合体系中起关键作用;GAC/H2O2/UV联合体系能减少出水中H2O2的剩余量。
The granular activated carbon(GAC) is used not only as adsorbent,but also as catalyst.The study aims to research the treatment of secondary effluent by GAC,hydrogen peroxide(H2O2) and ultraviolet(UV).The degradation of the dissolved organic matter in secondary effluent by GAC,UV,H2O2,GAC/UV,GAC/H2O2,UV/H2O2 or GAC/H2O2/UV is contrasted.The contribution in GAC/H2O2/UV system between the catalysis of H2O2 by GAC and the decomposition of H2O2 by UV is focused to discuss.The results show that the degradation efficiency by GAC/H2O2/UV is significantly higher than that by others.Degradation rate increases with the retention time.Though GAC can catalyze H2O2,the decomposing of H2O2 by UV to produce.OH plays the most important role.The residual hydrogen peroxide in effluent is decreased after degradation by GAC/H2O2/UV.
出处
《环境科学与技术》
CAS
CSCD
北大核心
2013年第S1期150-154,196,共6页
Environmental Science & Technology
基金
国家自然科学基金(21107101)
中国海洋大学:中央高校基本科研业务费青年教师科研专项基金项目(201113005)
关键词
紫外
过氧化氢
活性炭
二级出水
化学需氧量
UV
peroxide hydrogen
activated carbon
secondary effluent
chemical oxygen demand
