process water disinfection Articles
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Optimization of operating parameters for efficient photocatalytic inactivation of
Escherichia coli based on a statistical design of experimentsIn this work, the individual and interaction effects of three key operating parameters of the photocatalytic disinfection process were evaluated and optimized using response surface methodology (RSM) for the first time. The chosen operating parameters were: reaction temperature, initial pH of the reaction mixture and TiO2 P-25 photocatalyst loading. Escherichia coli concentration, after 90 ...
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Risk assessment and water safety plan: case study in Beijing, China
Two typical rural water utilities in Beijing, China were chosen to describe the principles and applications of water safety plans (WSP), to provide a methodological guide for the actual application and improve the quality of rural drinking water quality, and to establish an appropriate method for WSP applied in rural water supply. Hazards and hazardous events were identified and risk assessment ...
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Cost Benefits of Process Water Disinfection via UV Light Sterilizer Technology
Water is a substance that has many unique properties unlike any other fluid in the world. It is certainly a vital component of the survival of organic life, but it is also extraordinarily useful in industrial, municipal, and commercial processes. Process water makes up a significant portion of water use in the commercial and industrial sectors and depending on the industry and site, can be used ...
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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 ...
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Does sunlight change the material and content of polyethylene terephthalate (PET) bottles?
ABSTRACTA simple water treatment process called SODIS (solar water disinfection) consists of filling polluted water in PET bottles that are exposed to sunlight for 5–6 hours. However, sunlight does not only destroy disease-causing microorganisms found in the water but also transforms the plastic material into photoproducts. Laboratory and field tests revealed that these photoproducts are ...
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Chemically modified chitosan polymers for bromate removal
Bromate is a harmful byproduct formed during drinking water disinfection processes. In this work, adsorption of bromate by natural chitosan and its chemically modified polymers has been investigated. Bromate adsorption was found between 22.73 mg/g and 43.48 mg/g. Adsorbents were analysed by Fourier transform infrared-ATR spectroscopy. It is suggested that chemical adsorption is the main ...
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Does sunlight change the material and content of polyethylene terephthalate (PET) bottles?
A simple water treatment process called SODIS (solar water disinfection) consists of filling polluted water in PET bottles that are exposed to sunlight for 5–6 hours. However, sunlight does not only destroy disease-causing microorganisms found in the water but also transforms the plastic material into photoproducts. Laboratory and field tests revealed that these photoproducts are generated at the ...
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JXCT Water Quality Detector
JXCT major in different kinds of water quality analyzer,water quality tester,water quality monitor , water quality instrument and water quality detector, it can detect water PH value, residual chlorine, turbidity, suspended solids, COD, BOD, conductivity, dissolved oxygen and other parameters to achieve “river and lake water”, “drinking water”, “domestic ...
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Photocatalytic and photoelectrochemical inactivation of
Escherichia coli andStaphylococcus aureus Water disinfection usually requires expensive chemicals or equipment. Chlorination is a common disinfection method, although it is not able to inactivate all pathogens. High concentrations of residual chlorine also cause an unpleasant taste and smell in drinking water. As an alternative, photocatalysis and photoelectrochemical treatment has a high disinfection potential in drinking water by ...
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Hypochlorous Acid Electrolyzed Water Disinfectant Machine: What Is Water Disinfection?
The process of water disinfection helps remove, deactivate or kill different types of pathogenic microorganisms. Typically, microorganisms are either deactivated or destroyed, which results in the termination of the reproduction or growth. If you don't drink water that is free of microorganisms, you may end up falling sick. Let's find out more about it. Sterilization is a common process used to ...
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Electrochemical inactivation of
Bacillus spores in drinking water using a quaternary oxide electrodeBacillus spores are resistant to disinfection methods and they represent a potential threat that requires improved methods to ensure water safety. Bacillus thuringiensis (BT) and B. anthracis Sterne (BA) spores were used to investigate the effectiveness of the electrochemical (EC) disinfection process. We tested the quaternary metal oxide (TiO2–Sb2O5–SnO2–RuO2) as the anode material in an EC cell ...
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Organophosphate Pesticide Degradation Under Drinking Water Treatment Conditions
Chlorpyrifos (CP) was used as a model compound to develop experimental methods and prototype modeling tools to forecast the fate of organophosphate (OP) pesticides under drinking water treatment conditions. CP was found to rapidly oxidize to chlorpyrifos oxon (CPO) in the presence of free chlorine. The primary oxidant is hypochlorous acid (HOCl); thus, oxidation is more rapid at lower pH (i.e., ...
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Advanced engineering for ATEX solutions
The process of disinfecting water with UV light is a proven technology for drinking and process water in many industries, however the high standards required by the offshore industry command these systems to be engineered way beyond the normal specification of many manufacturers. When a leading offshore contractor based in Malaysia required two high specification ATEX systems for operation in ...
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Lighting the way for UV disinfection - Case study
Pharmaceuticals manufacturing involves the handling of powders and volatile, flammable solvents such as iso-propanol. Consequently there is every opportunity for explosive atmospheres to form. Pharmaceuticals manufacturing involves the handling of powders and volatile, flammable solvents such as iso-propanol. Consequently, there is every opportunity for explosive atmospheres to form. ...
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Standardised UV disinfection skid packages for offshore potable water treatment - Case Study
In response to the DWI guidance, atg UV Technology have developed a range of standardised UV skid package solutions, specifically designed for the quick and easy replacement of non-conforming UV equipment. The process of disinfecting water with UV light is a proven technology, and has been widely used throughout the offshore petrochemical sector for crew drinking water supplies for over 30 ...
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Offshore water injection - Case Study
Client: PPCoN Location: North Sea Description: UV disinfection of seawater for offshore reservoir injection The process of disinfecting water with UV light is a proven technology for drinking and process water in many industries. It has now been applied with great success to the disinfection of seawater for use well injection water. atg UV Technology understanding of UV disinfection combined ...
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Replacing chlorine water treatment With Alstasan Silvox
Water Treatment, a chain of process carried out to purify water with different desired end results. These include physical as well as chemical means. Visible impurities can be removed through physical means like filtration, sedimentation and decantation but problem arises for invisible pathogenic organisms which can only be removed through chemical addition. Various advanced chemical technology ...
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UVT 101: UV Transmittance Monitoring for UV Disinfection
ABOUT UVT UV transmittance, UV transmission or UVT is a measurement of the amount of ultraviolet light (commonly at 254 nm due to its germicidal effect) that passes through a water sample compared to the amount of light that passes through a pure water sample. To measure UVT, ultraviolet light at 254 nm is passed through a 10 mm quartz cell containing the sample water. The intensity of attenuated ...
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When water suffers from high turbidity, Filtronics is the clear solution
Water loses its transparency and takes on a hazy appearance when it contains a large quantity of suspended solid particles. While even a moderate lack of clarity is noticeable to even casual observers, the average person would probably describe a sample of such water as “cloudy” or “murky.” The technical term – turbidity – is not widely known to laymen outside ...
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Effects of tap water processing on the concentration of disinfection by-products
Aim: This study examined the effects on disinfection by-product (DBP) concentrations of common household methods for processing drinking water.Methods: We investigated the effects of refrigerator storage, jug filtering, boiling in an electric kettle, and supply from an instant boiling water unit, with or without filtering, on four species of trihalomethanes (THMs) and nine species of haloacetic ...
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