bacteria and viruses in drinking water Articles
-
Why is water the first thing communities need?
Clean water is the essential first step towards eliminating poverty. Currently, over 1 billion people outside of the United States do not have access to clean water.[i] That’s 1,000,000,000 people without access to safe water. According to WHOlives’ research, “There are no examples of communities that have eliminated poverty without first solving their scarce and contaminated ...
-
Chlorine Theory & Measurement
Chlorine, dissolved in liquid is one of the most effective and economical semi-killers for the treatment of water to make it potable or safe to drink. Chlorine's powerful disinfectant qualities come from its ability to bond with and destroy the outer surfaces of bacteria and viruses. Drinking water chlorination is one of the most widely used methods to safeguard chinking water supplies. In ...
-
UV Experience for Inactivating Cryptosporidium in Surface Water Plants
The disinfection of pathogenic microbes in drinking water has been largely successful over the last century due to the use of chlorination. However, research conducted in the 1970's revealed that by-products formed during the chlorination process are potentially carcinogenic and that there is a direct correlation between the concentration of chlorination by-products and the probability of certain ...
-
Monitoring Water Quality in Groundwater Studies
Groundwater derives from fresh water, such as rain or melted snow. It seeps under the Earth’s surface level into the pores between rocks, sand and soil. The water can be stored in these pores for many years or released into a river or the sea when the storage area becomes saturated. Because groundwater can quickly become contaminated, groundwater studies must be carried out. This post will ...
-
Ozone disinfection: main parameters for process design in wastewater treatment and reuse
Wastewater disinfection by ozone was investigated at pilot and full scale on different wastewater effluents and two types of ozone reactors. It was demonstrated that water quality and, in particular, suspended solids and organic content strongly influence the required ozone dose for a given level of disinfection. The increase in contact time and residual ozone concentration did not improve the ...
-
Comparison of hollow-fiber ultrafiltration to the usepa viradel technique and usepa method 1623
Received for publication April 2, 2008. Hollow-fiber ultrafiltration (UF) is a technique that is increasingly viewed as an effective alternative for simultaneously recovering diverse microbes (e.g., viruses, bacteria, parasites) from large volumes of drinking water. The USEPA has organism-specific methods, including Method 1623 for Cryptosporidium and Giardia and the virus adsorption–elution ...
Need help finding the right suppliers? Try XPRT Sourcing. Let the XPRTs do the work for you