drinking water chlorination Articles
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The effect of chlorine and combined chlorine/UV treatment on coliphages in drinking water disinfection
Chlorine disinfection is a globally used method to ensure the safety of drinking water. However, it has not always been successful against viruses and, therefore, it is important to find new methods to disinfect water. Seventeen different coliphages were isolated from the treated municipal wastewater. These coliphages and MS2 were treated with different dosages of chlorine in drinking water, ...
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Inactivation of human adenovirus by sequential disinfection with an alternative UV technology and free chlorine
There has been growing concern over human exposure to adenoviruses through drinking water due to the extreme resistance of human adenoviruses to the traditional UV technology (low-pressure (LP) UV). As an effort to develop an effective treatment strategy against human adenoviruses in drinking water, we determined the effectiveness of sequential disinfection with an alternative UV technology ...
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Should We Be Concerned About Disinfection Byproducts?
Chlorinating water can lead to the formation of harmful compounds, but there are treatment alternatives Water utilities often chlorinate drinking water to kill pathogens that could pose a risk to human health. However, when chlorine is used to treat water, it can cause a chemical reaction with natural inorganic or organic compounds, which may be derived from decaying plants, algae, or animal ...
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Introducing ozone to water purification – Case Study
Traditionally, chlorine has been used to disinfect water for drinking. Unfortunately, chlorine produces carcinogenic by-products called trihalomethanes (THM’s) when it reacts with organic substances in surface waters. The recent adoption of the Surface Treatment Rules by the U.S. E.P.A. places strict limits on chlorine. Because ozone produces fewer disinfecting by-products, the EPA, along ...
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Shining a new light on de-chlorination - Case Study
In collaboration with a UK Utility company, atg UV constructed an independently reviewed de-chlorination test rig and trial at its Lancashire headquarters in January of this year. Barry Hopton of atg UV Technology discusses with WWT how portable UV systems can provide a more efficient and proven alternative to de-chlorination of drinking water. The Water Industry is Changing its ...
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Chlorine dioxide disinfectant benefits
What is chlorine dioxide? Chlorine dioxide (ClO2) is a highly effective, eco-friendly micro biocide that carries the US EPA, FDA and UK Government approvals for many of its uses. It is a selective oxidant that eliminates many pathogenic organisms including Legionella, Listeria, Salmonella, amoeba cysts, Giardia cysts, E. Coli, and Cryptosporidium. Importantly, CIO2 also destroys biofilms so ...
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Closed-vessel vs. open channel - Case Study
Ultraviolet disinfection is now a standard feature in most waste water treatment systems and has also been adopted by the drinking water community. UV Systems Are Fast Becoming the Treatment of Choice Ultraviolet disinfection is now a standard feature in most wastewater treatment systems. UV has also been adopted by the drinking water community, as a barrier against the ...
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Standard Chlorine of Delaware Remediation
By designing a 70-foot deep barrier wall, Black & Veatch was able to cut off contaminant source areas from a creek near New Castle, Delaware. The groundwater treatment system that Black & Veatch designed prevents site contamination from reaching the underlying drinking water aquifer. The Standard Chlorine of Delaware Site is a 65 acre area including an abandoned chlorobenzene ...
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Closed vessel or open channel UV disinfection systems
Ultra violet disinfection is now a standard feature in most waste water disinfection systems. UV has also been adopted by the drinking water community, as a barrier against the chlorine tolerant species such as Cryptosporidium and Giardia. The technology is widely favored due to its non- chemical nature, the fact that no subsequent de-chlorination process is required, and its ability to be ...
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