全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...

制药废水微波辅助类芬顿预处理技术的影响因子优化

Keywords: 微波辅助类芬顿,预处理,制药废水

Full-Text   Cite this paper   Add to My Lib

Abstract:

以硫酸铁为催化剂、过氧化氢为初始氧化剂,利用微波辅助类芬顿技术处理制药废水,可在反应体系中产生酸性微环境,由此产生的羟基自由基和高铁配合物对体系中的有机污染物进行氧化分解,同时伴有铁盐的絮凝作用.在本研究中,1)通过影响因子优化研究,发现以下规律:当微波功率为中高水平(539W),1L废水过氧化氢投加量为5mL、硫酸铁投加量为1.5g,反应时间为6min时,作为预处理工艺,COD去除率是最经济合理的,并且废水中的毒性物质去除效果良好.2)本研究通过分级反应(共2级),即由于第1级的反应时间不同而得到不同状态絮体,然后进行相同条件的第2级反应.研究发现,当催化剂絮体初始形态从第1级反应为2min的状态开始,该条件下第2级反应的处理效果最佳;而由第1级反应超过3min时絮体开始的第2级反应处理效果最差.3)通过氧化还原电位(oxidationreductionpotential,ORP)研究微波辅助类芬顿反应进程,可看出:反应时间为6min时,氧化作用已经趋于停止;如果反应时间大于6min,建议只能从改善絮凝效果的角度提高COD去除率.4)将该技术与传统芬顿/类芬顿技术进行了对比,其显著提高了处理效果.

References

[1]  乌锡康,金青萍.有机水污染治理技术[M].上海:华东化工学院出版社,1989.
[2]  王剑虹,严莲荷,周申范,等.微波技术在环境保护领域中的应用[J].工业水处理,2003,23(4):18-22.WANG Jian-hong,YAN Lian-he,ZHOU Shen-fan,et al.Application of the microwave technology to the environmental protection[J].Industrial Water Treatment,2003,23(4):18-22.(in Chinese)
[3]  吴慧英,施周,陈积义,等.活性炭-微波辐射法去除苯酚的机理研究[J].环境工程学报,2009,3(1):67-71.WU Hui-ying,SHI Zhou,CHEN Ji-yi,et al.Study on mechanism of removal of phenol by activated carbonmicrowave irradiation[J].Journal of Environmental Engineering,2009,3(1):67-71.(in Chinese)
[4]  张德莉,黄应平,罗光富,等.Fenton及Photo-Fenton反应研究进展[J].环境化学,2006,25(2):121-127.ZHANG De-li,HUANG Ying-ping,LUO Guang-fu,et al.Research process of Fenton and Photo-Fenton reaction[J].Environmental Chemistry,2006,25(2):121-127.(in Chinese)
[5]  马万红,籍宏伟,李静,等.活化H2O2和分子氧的光催化氧化反应[J].科学通报,2004,49(18):1821-1829.MA Wan-hong,JI Hong-wei,LI Jing,et al.Activation of hydrogen peroxide and dioxygen for photocatalytic oxidation reaction[J].Science Bulletin,2004,49(18):1821-1829.(in Chinese)
[6]  WINTERBOUM C C.Toxicity of iron and hydrogen peroxide:the Fenton reaction[J].Toxicology Lettters,1995,82:969-974.
[7]  MUNOZ M M,DE PEDRO Z M,CASAS J A,et al.Assessment of the generation of chlorinated byproducts upon Fenton-like oxidation of chlorophenols at different conditions[J].Journal of Hazardous Materials,2011,190(1):993-1000.
[8]  苏荣军,王鹏,车春波,等.Fenton法深度处理中药废水的研究[J].西安建筑大学学报:自然科学版,2009,41(4):575-579.SU Rong-jun,WANG Peng,CHE Chun-bo,et al.Study on further treatment of Chinese medicine wastewater with Fenton method[J].Journal of Xi'an University of Architecture and Technology:Natural Science Edition,2009,41(4):575-579.(in Chinese)
[9]  HSUEH C L,HUANG Y H,WANG C C,et al.Degradation of azo dyes using low iron concentration of Fenton and Fenton-like system[J].Chemosphere,2005,58(10):1409-1414.
[10]  TANG H X,WERNER S.The coagulating behaviors of Fe(Ⅲ)polymeric species-Ⅰ[J].Water Research,1987,21(1):115-121.
[11]  TANG H X,WERNERr S.The coagulating behaviors of Fe(Ⅲ)polymeric species-Ⅱ[J].Water Research,1987,21(1):123-128.
[12]  YANG Y,WANG P,LIU Y.Species distribution of ferric hydrolysates in microwavc enhanced Fenton-like process and possible mechanism[J].Journal of Hazardous Materials,2010,178(1):293-297.
[13]  高迎新,张昱,杨敏.Fenton反应中氧化还原电势的变化规律[J].环境化学,2004,23(2):135-139.GAO Ying-xin,ZHANG Yu,YANG Min.Characteristics of ORP in Fenton's reaction[J].Environmental Chemistry,2004,23(2):135-139.(in Chinese)
[14]  汪昆平,杨林,王春艳,等.Fenton氧化体系·OH、ORP、H2O2和Fe2+变化特征[J].水处理技术,2011,37(12):36-41.WANG Kun-ping,YANG Lin,WANG Chun-yan,et al.·OH,ORP,H2O2,and Fe2+variation characteristics of Fenton's oxidation system[J].Water Treatment Technology,2011,37(12):36-41.(in Chinese)
[15]  赵云,王丽萍,何士龙,等.Fenton试剂氧化对硝基酚中氧化还原电位的变化[J].环境污染与防治,2011(4):58-61.ZHAO Yun,WANG Li-ping,HE Shi-long,et al.Variation of ORP during p-nitrophenol degradation by Fenton oxidation process[J].Environmental Pollution&Control,2011(4):58-61.(in Chinese)

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133