chlorine water disinfection Articles
-
Purpose: To determine the ability of the Hanovia UVP 61 water disinfection system to
Disinfection of public swimming pools and water amenities is essential to maintain safe and attractive bathing conditions. The challenge today is to provide water conditions free of irritants and after effects and smell. Customers expect clear, odour free, high quality water. Chlorine disinfection is the most common means of providing such protection. However, chlorine chemistry is complex and ...
-
Quality and disinfection trials of consumption water in storage reservoirs for rural area in the Marrakech region (Assif El Mal)
Traditional reservoirs for water storage are important systems of water supply in rural areas of Morocco. These reservoirs are fed by rainwater and/or directly from rivers through open channels; the stored water is used without any treatment as drinking water by the surrounding population. The present study aimed to assess the physicochemical and bacteriological quality of stored water and the ...
-
A new method for efficient detection of Cryptosporidium RNA by real-time reverse transcription-PCR with surfactants
Cryptosporidium is one of the most common causes of waterborne diseases worldwide. Its oocysts possess a robust wall that is extremely resistant to the chlorine used for potable water disinfection. The current procedures of nucleic acid extraction and purification, such as the freeze–thaw (F/T) method and the commercial kits, are time consuming and expensive. To this end, a surfactant ...
-
Evaluation of ultrasound technology for the disinfection of process water and the prevention of biofilm formation in a pilot plant
In this study, we investigated the use of ultrasound for the disinfection of process water as an alternative for more traditional techniques, like chlorination and UV-irradiation. A pilot plant was constructed to mimic circulating process water in industrial environments. The disinfection efficiency of ultrasound was assessed and compared to UV-treatment and chlorination. In addition, the ...
-
Evaluating a composite cartridge for small system drinking water treatment
A pilot-scale evaluation was conducted at the U.S Environmental Protection Agency (EPA) Test & Evaluation (T&E) Facility in Cincinnati, Ohio, on a multi-layer, cartridge-based system that combines physical filtration with carbon adsorption and ultraviolet (UV) light disinfection to serve as a home-base water treatment security device against accidental or intentional contaminant events. The ...
-
Strontium adsorption and desorption reactions in model drinking water distribution systems
Divalent cationic strontium (Sr2+) adsorption to and desorption from iron corrosion products were examined in two model drinking water distribution systems (DWDS). One system was maintained with chlorine-disinfected drinking water and the other with the same water with secondary chloramine disinfection. Flow conditions simulated primary transmission lines (constant flow) and residential ...
-
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 ...
-
Sorbents with biocidal properties for disinfection of water for various purposes
Conventional methods for water disinfection, especially chlorination, have a lot of disadvantages and should be perfected or substituted with safer and more efficient methods. One of the possible solutions to this problem is the application of sorbents with high disinfection efficacy. In this study, the opportunity of producing sorbents with biocidal properties based on non-oxidizing biocides ...
-
The Process Behind Ozone Water Treatment Systems
“Many industries use ozone water treatment systems to purify and sanitize water. But do you ever wonder how these systems work? Our goal in this post is to explain how ozone is produced and how it is used to eliminate impurities and contaminants from water. Find out how ozone can be used to treat water in an innovative and efficient way.” ...
-
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 ...
-
Free and residual chlorine according to DIN EN ISO 7393-1
Metrohm is pleased to present an Application Bulletin describing the determination of free and total chlorine by iodometric titration. To disinfect water for human consumption, chlorine is added to the water in some countries. Because chlorine is highly toxic, organism like bacteria are killed and the onset of waterborne diseases like cholera is prevented. But chlorine is not only toxic to ...
By Metrohm AG
-
United States EPA Method 415.3
Abstract In order to ensure drinking water is safe for human consumption, water treatment plants often add disinfectants to drinking water. The disinfectants, such as chlorine, protect drinking water from pathogens, disease causing organisms, but can react with naturally occurring materials in the water to form byproducts that may be harmful for consumption. The United States Environmental ...
-
Your Tap Water is More Toxic than you Think
At a Glance A new study proves that while adding chlorine to water has kept water clearer of diseases such as cholera and typhoid fever, it can leave behind toxic byproducts. These byproducts may have the potential to harm an individual’s long term health. At this point we don't even know all the byproducts left in the water from the current treatment methods. Your tap water might ...
-
Tampa Switches to Chlorine for Water Treatment
Many Tampa residents received a notice in the mail a few days ago alerting them that the city is temporarily changing their disinfecting agent from chloramines to chlorine. The notice, which you can read in full below, claims that this procedure is merely routine maintenance and that the water will still be safe to drink. Citizens who aren’t familiar with water treatment methods may read ...
-
A new immunomagnetic bead separation–surfactant extraction treatment protocol for rapid and sensitive quantitative PCR detection of Cryptosporidium parvum DNA
The Cryptosporidium oocyst is encased in a robust wall that is extremely resistant to detrimental environmental factors such as chlorine used to disinfect potable water. Therefore, extracting oocyst DNA is not a trivial undertaking. Standard procedures used to extract DNA from oocysts, such as freeze–thaw (F/T) methods and DNA purification kits, are time-consuming and expensive and are ...
-
Biological wastewater treatment Dalian, China
To manage the demands set for the plant, a biological treatment with fixed bed was chosen. The water first undergoes pre-treatment by screening and grit/grease removal. Primary sedimentation is done in 4 tanks with lamellar sedimentation. The first step in the biological treatment consists of BOD, COD and SS removal in 12 Biofor filters. In these filters round expanded clay aggregates, ...
-
Removing 2,4-dichlorophenol from aqueous environments by heterogeneous catalytic ozonation using synthesized MgO nanoparticles
2,4-Dichlorophenol (2,4-DCP) is one of the seriously toxic chlorophenol compounds found in agricultural environments, in water disinfected by chlorine, and in outgoing effluents from the pulp and paper industries and paper manufacturing factories. This research studied the feasibility of using MgO nanoparticles (MgO-NPs) as a catalyst in the ozonation process for removing 2,4-DCP from aqueous ...
-
Effect of blending ratio on the formation of bromoform and bromate in blended water samples disinfected with chlorine or ozone
This study was carried out to assess the potential formation of bromoform and bromate in drinking water samples prepared by blending desalinated and brackish ground water when disinfected by chlorination or ozonation methods. The levels of bromoform and bromate were determined under various treatment conditions including blending ratios, disinfectant dosage, temperature, and reaction time. ...
-
Free radical destruction of haloacetamides in aqueous solution
Haloacetamides are disinfection byproducts (DBPs) formed through chlorine/chloramine disinfection processes in drinking waters and have been recently highlighted in the US national Reconnaissance Survey. These species occur at low concentrations, but have been determined to have high cytotoxicity and mutagenicity and therefore may represent a human health hazard. Advanced oxidation/reduction ...
-
Zetor - Protecting hot water from bacteria - Case Study
Bacteriological contamination was detected in the Zetor company during a regular analysis of warm non-potable water, used for sanitary facilities. How we solved the bacteria The sanitary facilities in Zetor use three junction exchange stations, each with a volume of 32 m3. As the first step, we conducted a brief study into sanitation of hot water mains and explored the possibilities of ...
Need help finding the right suppliers? Try XPRT Sourcing. Let the XPRTs do the work for you