摘要
评估了自制的Fe-Mn/Al2O_(3)(FMA)臭氧催化剂的催化性能,探究了不同质量浓度的NaCl、Na_(2)SO_(4)、NaNO_(3)和NaHCO_(3)对纯臭氧体系和FMA催化臭氧氧化体系处理对氯苯酚的影响。结果表明:与纯臭氧体系相比,FMA催化臭氧氧化体系对含有NaCl、Na_(2)SO_(4)和NaNO_(3)对氯苯酚废水的去除效果提升了8%~20%,但对含有NaHCO_(3)的废水去除效果提升不明显。随着NaCl质量浓度从0(去除率41.3%)到10000 mg/L(去除率63.1%),纯臭氧体系和催化臭氧氧化体系都受到极大的抑制,去除率分别降低到12.0%和32.4%。当NaHCO_(3)的质量浓度从0到1000 mg/L时,纯臭氧体系和FMA催化臭氧氧化体系去除污染物质的效果都被一定程度地提升,尤其是纯臭氧体系提升了22.5%,随着质量浓度从1000 mg/L到10000 mg/L,由于CO_(3)^(2-)和HCO_(3)-对·OH的猝灭都被一定程度地抑制。对于Na_(2)SO_(4)和NaNO_(3),对臭氧化对氯苯酚的去除效果影响不大。
This study evaluated the catalytic performance of the self-made Fe-Mn/Al_(2)O_(3)(FMA)ozone catalyst,and explored the effects of different concentrations of NaCl,Na_(2)SO_(4),NaNO_(3),and NaHCO_(3) on the treatment of pure ozone system and FMA catalytic ozonation system on chlorophenol.The results showed that the FMA catalytic ozonation system improved the removal effect of p-chlorophenol wastewater containing NaCl,Na_(2)SO_(4),and NaNO_(3) by 8%~20%compared to the pure ozonation system.But the removal effect of wastewater containing NaHCO_(3) was not significantly improved.With increasing the NaCl concentration from 0(removal efficiency of 41.3%)to 10000 mg/L(removal efficiency of 63.1%),the pure ozonation system and catalytic ozonation system were greatly inhibited,and the removal efficiency was reduced to 12.0%and 32.4%,respectively.When the concentration of NaHCO_(3) was increased from 0 to 1000 mg/L,both the pure ozonation system and the FMA catalytic ozonation system could partly improve the removal effect of pollutants,especially the pure ozonation system increased by 22.5%.The concentration of NaHCO_(3) was increased from 1000 mg/L to 10000 mg/L,the quenching of•OH was partly suppressed by CO_(3)^(2-)and HCO_(3)-.For Na_(2)SO_(4) and NaNO_(3),there was no significant effect on the removal of chlorophenol by ozonation.
作者
吴雅琴
熊威
邹方远
李想
杨波
张新
WU Yaqin;XIONG Wei;ZOU Fangyuan;LI Xiang;YANG Bo;ZHANG Xin(Hangzhou Water Treatment Technology Development Center,Hangzhou 310012,China)
出处
《水处理技术》
CAS
CSCD
北大核心
2022年第1期108-111,117,共5页
Technology of Water Treatment
基金
杭州市重大科技创新(20182013A02)
浙江省重点研发计划(2021C04002)
浙江省海水淡化技术研究重点实验室(2012E10001)。
关键词
纯臭氧氧化
催化臭氧氧化
钠盐
对氯苯酚
pure ozonation
catalytic ozonation
sodium salt
p-chlorophenol
