评估常规、臭氧和UV/H2O2去除新出现的污染物和THM-FPs

IF 2 Q3 Environmental Science

Water Quality Research Journal of Canada Pub Date : 2015-05-01 DOI:10.2166/WQRJC.2014.018

Devendra Borikar, M. Mohseni, S. Jasim

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引用次数: 18

摘要

虽然药物和个人护理产品(PPCPs)以及内分泌干扰化合物(EDCs)和三卤甲烷对人类的潜在风险很小或未经证实，但建议去除这些与废水有关的污染物，以增加公众的信心和接受度，作为预防原则，因此在饮用水处理过程中消除或减少它们是有必要的。采用臭氧和紫外线/过氧化氢(UV/H2O2)双列中试常规处理装置，对三种不同的原水源进行了实验研究。三卤甲烷生成势(THM-FPs)降低8-52%。在大多数实验条件下，臭氧可以降低THM-FPs，而UV/H2O2可以提高THM-FPs。常规处理对PPCPs和EDCs的去除率较差，而臭氧+常规处理的去除率较好。常规+ UV/H2O2处理也能有效去除废水。然而，传统的+ UV/H2O2处理对PPCPs和EDCs的去除效果较低，可能是由于有机物、碳酸氢盐、碳酸盐和颗粒等清除剂的存在。

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Evaluations of conventional, ozone and UV/H2O2 for removal of emerging contaminants and THM-FPs

Although potential risk of pharmaceuticals and personal care products (PPCPs) and endocrine disrupting compounds (EDCs) and trihalomethanes to humans is small or unconfirmed, it is advisable to remove these wastewater-related contaminants to increase public confidence and acceptance as a precautionary principle and consequently their elimination or reduction during drinking water treatment is warranted. Experiments were conducted using the dual train pilot-scale conventional treatment plant with ozone and ultraviolet/hydrogen peroxide (UV/H2O2) with three different raw water sources. Reductions of trihalomethanes-formation potentials (THM-FPs) were 8–52%. Ozone was found to decrease THM-FPs while UV/H2O2 was found to increase THM-FPs in most of the experiments under experimental conditions. Conventional treatment poorly removed the selected PPCPs and EDCs while ozone + conventional treatment provided excellent removal. Conventional + UV/H2O2 treatment also demonstrated effective removal. However, removal of PPCPs and EDCs by conventional + UV/H2O2 treatment provided lower efficacy for Sites B and C, likely due to the presence of scavengers such as organics, bicarbonates, carbonates and particles.

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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.