太阳能/TiO2/Fe2+/H2O2协同降解医院废水

IF 2 Q3 Environmental Science

Water Quality Research Journal of Canada Pub Date : 2014-08-01 DOI:10.2166/WQRJC.2014.026

S. A. Kumar, G. Lekshmi, Rajesh Banu Jeyakumar, I. Yeom

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引用次数: 18

摘要

研究了多相和均相光催化联合降解医院废水的方法。评价了太阳能/ tio2 / h2o2、太阳能/ fe2 + / h2o2和太阳能/ tio2 / fe2 + / h2o2 -三种工艺。由于均相和非均相光催化反应的协同作用，太阳能/ tio2 / fe2 + / h2o2工艺的效率有所提高。该组合通过减少分离操作的反应时间提高了光处理效率，降低了处理成本。使化学需氧量(COD)降低99%以上的最佳条件为pH 7、0.5 g/L Fe 2+、0.2 g/L tio2和1.35 g/L h2o2。出水COD和总悬浮物浓度分别为20和30 mg/L，满足排放标准要求。

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Synergistic degradation of hospital wastewater by solar/TiO2/Fe2+/H2O2 process

Combined heterogeneous and homogenous photo-catalytic degradation of hospital wastewater was investigated. Three processes – solar/TiO 2 /H 2 O 2 , solar/Fe 2+ /H 2 O 2 and solar/TiO 2 /Fe 2+ /H 2 O 2 – were evaluated. The solar/TiO 2 /Fe 2+ /H 2 O 2 process displayed increased efficiency due to the synergetic effect of homogeneous and heterogeneous photo-catalytic reaction. The combination increased the photo process efficiency by decreasing the reaction time of the separate operations and decreased the cost of treatment. The optimal conditions enabling over 99% reduction of chemical oxygen demand (COD) were pH 7, 0.5 g/L Fe 2+ , 0.2 g/L TiO 2 and 1.35 g/L H 2 O 2 . The effluent COD and total suspended solids concentrations were 20 and 30 mg/L, respectively, which met the discharge standard requirements.

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来源期刊

Water Quality Research Journal of Canada WATER RESOURCES-

CiteScore

1.70

自引率

0.00%

发文量

审稿时长

>12 weeks

期刊介绍： The Water Quality Research Journal publishes peer-reviewed, scholarly articles on the following general subject areas: Impact of current and emerging contaminants on aquatic ecosystems Aquatic ecology (ecohydrology and ecohydraulics, invasive species, biodiversity, and aquatic species at risk) Conservation and protection of aquatic environments Responsible resource development and water quality (mining, forestry, hydropower, oil and gas) Drinking water, wastewater and stormwater treatment technologies and strategies Impacts and solutions of diffuse pollution (urban and agricultural run-off) on water quality Industrial water quality Used water: Reuse and resource recovery Groundwater quality (management, remediation, fracking, legacy contaminants) Assessment of surface and subsurface water quality Regulations, economics, strategies and policies related to water quality Social science issues in relation to water quality Water quality in remote areas Water quality in cold climates The Water Quality Research Journal is a quarterly publication. It is a forum for original research dealing with the aquatic environment, and should report new and significant findings that advance the understanding of the field. Critical review articles are especially encouraged.