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UV System WHAT IS UV DISINFECTION SYSTEM AND HOW DOES IT WORK? UV Disinfection System is an extremely effective way to combat microbial contamination in water. However, microbes have to be exposed to UV-C light in the proper amount in order to effectively disinfect the water. UV Disinfection Systems are used in many different applications ranging from the purification of drinking water in individual homes to disinfecting water supply of entire townships. UV treatment for water is recognized as the safer and more cost-effective way to disinfect water for industrial applications. UV sanitization is useful in almost any application where microbial free, safe and pure water is required; and where there is a chance of the water being contaminated before it reaches the final point of use. How Does UV Disinfection System Work? UV light disinfects by penetrating microorganisms and destroying their DNA. DNA plays an important role in organisms’ functions and reproduction hence destroying the DNA prevents the organism from being active and multiplying. This UV energy (wavelength of 240-280 nm) is also naturally found in sunlight in very small quantities. The same energy is produced in stronger intensities with help of high mercury discharge lamps, commonly known as UV lamps. No bacteria, viruses, molds or their spores can survive when exposed to the correct dose of UV light. Therefore UV is considered as the best solution for water sterilization. Industrial Applications of UV Disinfection System Ultraviolet disinfection system is not simply a lamp inside a pipe. The UV Reactor must be designed to ensure that all microbes receive sufficient exposure to the UV light (dose).Based on the hydraulic properties of water; the reactor needs to be optimized to guide the flow in a manner so as to maximize residence time and boost turbulence. Well designed UV systems are producing consistently exceptional results in the industrial applications. Few Examples : Food and Beverage – UV disinfection system can help to achieve quality of water as per specifications laid down by the FDA ( Food and Drug Administration ) Bio- Pharmaceutical – Water used in Pharmaceutical and healthcare products and for CIP (Cleaning in Place) must be free of chemicals like chlorine, ozone, and pathogens. Most pharmaceutical companies depend on UV systems for water disinfection. Cosmetics – Water that is free of microorganisms and toxins ensure quality and enhance the shelf life of cosmetics. UV Sterilization is the preferred choice for the cosmetic industry across the globe. Centralized Drinking Water – A UV system is an easy, affordable solution to ensure pure water in each and every tap of your home or office. Waste Water Disinfection and Reuse – To combat the problems of water scarcity and rising cost of fresh water, UV Disinfection can help by treating the waste water in the tertiary stage. UV systems that are specially designed for wastewater can thus disinfect wastewater so that the water can be reused for secondary purposes such as flushing and gardening. Swimming Pools – Traditionally, chlorine has been in use to ensure clean water in swimming pools. However, it is increasingly being known that with chemical disinfection, chemical reacts with many other organic matters to form hundreds of new chemicals which are harmful. While UV is recognized as safer and more cost effective way to disinfect swimming pools. Benefits of UV Disinfection System Natural – UV is nature’s way of purification. Environmentally Friendly – No Toxic by-products are formed during UV disinfection process Effective – All known microorganisms are susceptible to UV light Economical – Lowest operating cost amongst disinfection systems Safe& Chemical Free – No addition of chemicals hence no danger of overdosing Fast – It is In-contact purification therefore Instant Easy to Manage – Well designed systems like the Alfaa UV systems come with many advanced features like CFD (Computational Fluid Dynamics), high-efficiency electronic ballasts, and extremely precise UV intensity monitors which make them highly effective and hence easy to manage. Does a UV Disinfection System need periodic maintenance? There can be some cases where the water is not adequately pre-treated and turbidity levels are low. In such cases, routine inspection and cleaning can be carried out every 6 months. In the case of high turbidity and hardness, the cleaning frequency might need to be increased. Finally, the UV lamp has a limited life and must be replaced once it is exhausted. In the unlikely event of premature failure of the lamp, the monitoring circuit will provide the signal to advise replacement.
Green Water Concepts India Pvt Ltd has signed an agreement with Kottopadam Grama Panchayat for the supply, installation, and commissioning of UV water purifiers, 500LPH capacity. GWC has successfully installed 18 nos of UV water purifiers with auto cut off facility. The purifying units consists of 1. Sediment Filter - 5 micron, 20inch, with 20inch polypropylene cartridge 2. Carbon block filter (CTO, 20') 3. Sediment Filter - 1micron, 20inch, with PP Cartridge 4. Solenoid Valve 5. UV System 500LPH - alpha UV 6. Loft Tank, 150L capacity 7. SS Taps, for dispensing the water. The UV system will cut off when the loft tank is full. The school administrative already admired the quality of the job done.
ENERGIZING NEW DESALINATION TECHNOLOGIES Sponsored by Initiatives seek to make water treatment options more cost- and energy-efficient. By Alanna Maya Desalination can be used to treat seawater, brackish water, and contaminated water for use in municipal water supplies or to reclaim contaminated water, making it an ideal solution for areas where fresh water resources are limited. But with energy accounting for anywhere from one-third to more than half of a plant’s operating costs, professional organizations and researchers are looking at ways to reduce energy consumption. Finding a more energy-efficient way toward desalination could mean an unlimited supply of freshwater resources in the future. SPONSORED CONTENT BY Evoqua Delivering Worry-Free Water (TM) For today's industrial producers, water and wastewater are critical considerations but they are not necessarily core to their businesses. Being able to rely on a trusted expert gives manufacturers peace of mind, allowing them to focus on their key business objectives. We spoke with Mitch Summerfield, vice president and general manager of light industry technologies for Evoqua Water Technologies, about what it takes to be a leader in water and wastewater services for the industrial sector. Brought To You By According to a joint statement by the American Membrane Technology Association (AMTA) and the Bureau of Reclamation, “The need to reduce the cost, energy usage and environmental impacts in advanced water treatment and desalination [requires] a focus on innovation of new systems or optimization of existing technology.” To this end, the two organizations are offering four awards of more than $11, 000 each for development of “novel approaches or processes to desalinate water in a way that reduces primary energy use.” Other agencies are also seeking out ways to foster innovation in this area. Illinois mechanical science and engineering professor Kyle Smith and his co-­authors have shown that a new battery-like water desalination device could help provide fresh water to a variety of regions efficiently and economically. Photo by L. Brian Stauffer. Illinois mechanical science and engineering professor Kyle Smith and his co-­authors have shown that a new battery-like water desalination device could help provide fresh water to a variety of regions efficiently and economically. Photo by L. Brian Stauffer. Recently, the U.S. Department of Energy (DOE) announced $15 million in congressionally-directed funding for solar desalination technologies. The Solar Energy Technologies Office will award between $500, 000 and $5 million to 7 to 10 projects that explore early-stage technologies with the prospect of significantly reducing the cost of desalination through solar thermal energy. “By integrating solar technology with desalination, we can dramatically lower the cost of creating clean water, ” said Charlie Gay, Solar Energy Technologies Office director, in a press release. According to the DOE, solar power, either in the form of electricity or thermal power, has the potential to dramatically reduce the cost of desalination. With electricity costs accounting for up to half of the operating expenses for desalination projects, this is in important area of research. Another is in the area of concentrate management. The Kay Bailey Hutchison Desalination Plant recently entered into a utility partnership with Enviro Water Minerals to expand upon its desalination capacity and treatment for brine concentrate. Photo courtesy El Paso Water. The Kay Bailey Hutchison Desalination Plant recently entered into a utility partnership with Enviro Water Minerals to expand upon its desalination capacity and treatment for brine concentrate. Photo courtesy El Paso Water. A DECADE OF INNOVATION Since opening in 2007, the Kay Bailey Hutchison (KBH) Desalination Plant in El Paso, Texas, has become a model for places around the globe facing serious water supply challenges. The plant has produced 17 billion gallons of water since beginning operations. Recently, water sector leaders and researchers gathered to celebrate the desalination plant on its 10th anniversary. “Given the vast brackish groundwater resources, desalination has become an important part of the puzzle that will ensure we have a vital water future for this community, including for our kids, grandchildren and anybody that wants to live here in the future, ” said John Balliew, president and CEO of El Paso Water. A new utility partnership between El Paso Water and Enviro Water Minerals (EWM) will result in what is being called “the first full-recovery desalination facility.” It includes a new, neighboring facility that will take the plant’s brine concentrate — which would otherwise go through a deep well injection process — and turn the salts and minerals into industrial-grade commercial products. EWM will then sell fresh drinking water back to the utility at a rate of 2 million gallons per day at full capacity. The Texas Coalition for Affordable Power released a report this summer on the declining costs of energy in Texas and credited a competitive market, use of wind, solar and nuclear power, and the price of natural gas as major factors. At the KBH plant’s anniversary celebration, Paul Choules, president of the Texas Desalination Association, spoke about taking advantage of the lower costs of energy in Texas. “The reality is in the state of Texas we should be able to desalinate cheaper than anywhere in the world, and one of the major reasons for that is the cost of energy, ” Choules said. Guy Carpenter, president of the national WateReuse Association, said that for inland desalination applications, brine management is the chief barrier nationwide. He said utilities will continue to have to deal with the expensive options for removal, such as evaporation, thermal brine concentration and deep well injection. Enviro Water Minerals’ concentration system processes the diluted chemicals manufactured in the desalination plant. Photo courtesy El Paso Water. Enviro Water Minerals’ concentration system processes the diluted chemicals manufactured in the desalination plant. Photo courtesy El Paso Water. In a statement, Barbara Martin, director of engineering and Technical Services for the American Water Works Association, said innovations at El Paso Water could bring about more widespread use of desalination in the industry. El Paso Water can “provide a blueprint for utilities to follow and hopefully increase the use of desalination technology in the future, ” Martin said. Economically Desirable and Energy Efficient Engineers at the University of Illinois have developed a saltwater desalination process that is potentially cheaper than reverse osmosis and borrows from battery technology. “As demand for diminishing clean water sources increases, the need for desalination of lower-salinity brackish water from inland and industrial sources will increase, ” Illinois mechanical science and engineering professor Kyle Smith and his co-authors said. Previously, Smith and his team used theoretical modeling to show that technology used in sodium-ion batteries may efficiently desalinate seawater. Their theory states that by using electrodes that contain sodium and chloride ions, salt is drawn out and held in a chamber separate from the purified water. “In our new study, we constructed and experimented with a battery-like device that uses electrodes made from a different material. That material can remove from brackish water not only sodium ions but also potassium, calcium, magnesium and others, ” Smith said in a statement. “This is important because salt and brackish waters do not contain just sodium chloride. It is often in a mix with other salts like potassium, calcium and mangnesium chloride.” The new material is a chemical analog to the compound Prussian blue — the intense pigment used in ink for blueprints. It works by taking and holding positively charged ions like sodium within its crystal structure, Smith said. “The competition between the rate of diffusion of the positively charged ion within the crystal structure and the volume at which the ions can be stored creates a trap-like structure, ” Smith said. “They go in easily but can’t get out.” There are other materials that can secure positive ions, but the Prussian blue analog has an additional benefit: it is potentially very cheap to source. “To make a technology like this economically feasible, it needs to be cheap and, ideally, have some value-added benefit, ” Smith said. “By showing that our device works well with lower-salinity waters, the door for use with inland brackish waters and possibly industrial wastewater has opened.” Smith and his co-authors show that the amount of salt removal is sufficient to demonstrate their concept using brackish water. However, further research is needed to determine how the removal of salts from higher-salinity seawater and wastewater will impact that energy efficiency. WW Alanna Maya is Assistant Editor for WaterWorld and Industrial WaterWorld Magazines. Email her at
Green Water Concepts India Pvt ltd has signed an agreementin February 2018 with Govt. Engineering College, Kozhikode for the supply and installation of 3 units of water dispensers with hot, cold and normal. The salient features of the supplied water purifier are 1. Stainless Steel Storage Tanks, total capacity - 80L 2. Cartridge Filters in SS housing 3. UV & Ozone system for disinfection of water 4. Auto cut off features 5. Dry run protection of UV lamp The units were installed in the month of February.
Is Iron In Drinking Water A Public Health Risk? It’s long been thought that the presence of iron in drinking water is a cosmetic problem rather than a public health concern. But some scientists are now saying that while the iron itself might not be hazardous to your health, what it does to your drinking water is. Dr. Marc Edwards is a professor at Virginia Tech and world-renowned expert on lead corrosion. He found dangerous levels of lead in Flint’s water system last summer after a local resident and activist reached out to ask for help. His research says that high iron in water can remove disinfectants like chlorine, allowing harmful bacteria to grow. This includes bacteria like legionella, which causes Legionnaire’s Disease. Legionnaire’s disease is a lung infection caused by breathing in contaminated water droplets. The disease also causes high fever and diarrhea and it can be fatal. The Centers for Disease Control estimates as few as two per cent of legionella cases ever get reported, so it’s tough to know the true impact on public health. Edwards believes that there may have been an increase in rates Legionnaire’s disease in the Flint area based on the number of cases health officials have reported, but no direct link has been made to the city’s water supply. “Regular testing can help to protect your water system and the people who rely on you to provide safe drinking water, ” says Pat Whalen, President & CEO of microbial monitoring firm LuminUltra. “Detecting elevated microbial growth levels in real-time can mean the difference between early prevention and putting consumers at risk.” Whalen adds that LuminUltra Water (QGA™) test kit enables microbial data to be generated in a short amount of time from many points in a water treatment or distribution system.