drinking water filtration Articles

  • Effects of recycling flocculation membrane filtration on drinking water treatment

    Recycling flocculation membrane filtration (RF-MF) and coagulation membrane filtration (C-MF) were investigated for removal of natural organic matter (NOM) from Luan river in this study. The effectiveness of recycling flocculation pretreatment on both NOM removal and membrane filtration were assessed under different concentrations of coagulant and reflux flocs. Under the conditions of coagulant ...


    By IWA Publishing

  • Use of anthropogenic gadolinium as a tracer for bank filtrate in drinking water wells

    Knowledge of the amount of bank filtrate in raw water is crucial for drinking water suppliers using water wells in close proximity to rivers, in particular if those rivers are strongly affected by anthropogenic activities, e.g. receiving effluents from waste water treatment plants. Analysis of organic micropollutants as tracer compounds is costly and time-consuming, and results may be biased by ...


    By IWA Publishing

  • Use of horizontal flow roughing filtration in drinking water treatment

    In order to evaluate the feasibility of implementation of horizontal-flow roughing filtration for drinking water treatment a pilot was designed and run at the bank of Zayandehroud river near the village of Chamkhalifeh. Pilot running was performed in summer 2003 (July, August and September), when the quality of river water was in relatively worst condition. The filter is comprised from three ...

  • The Future of Drinking Water

    Predicted future growth in population numbers and rising sea levels mean demand for drinking water will continue to increase just as the natural availability of freshwater decreases. It is likely that brackish groundwater will be an important source of drinking water in the future, but the current methods used to produce fresh water from this source are expensive in terms of their energy use and ...


    By Boode Waterwell Systems

  • Nan H2O filtration Drinking Water Production – Membrane Filtration Municipality of Lac - Bouchette

    Located in Lac-Saint-Jean, Quebec, Lac-Bouchette is a municipality of 1,400 inhabitants. For its supply in drinking water, the Roche Ltd Consulting Group recommended the municipality to call on H2O Innovation’s services. This, following a pilot study executed on the water of the Ouiatchouan lake that has been carried out from May till October 2003. The nanofiltration treatment system called ...


    By H2O Innovation

  • Mono solar water filtration system provides safe drinking water to the st francis hospital

    Background The St Francis Nyenga Hospital is located in Nyenga, Uganda, close to the town of Jinja where the Nile River makes its long journey to Egypt from Lake Victoria. The Sisters of St. Francis have operated the hospital since its foundation in 1932. St Francis Hospital offers medical services free of charge to the poor and needy through their interactive community health and ...


    By NOV Mono - Mono Pumps Ltd

  • Micronized CaCO3: a feasible alternative to limestone filtration for conditioning and (re)mineralization of drinking water?

    Worldwide limestone filtration is used in many treatment plants for the conditioning and (re)mineralization of drinking water to increase concentrations of Ca2+ and HCO3−, pH and saturation index, thereby improving the quality of the water regarding corrosion control, buffering and taste. Typical applications include (very) soft groundwater with (very) low alkalinity and desalinated water. In ...


    By IWA Publishing

  • “Ozone” and “GAC filtration” synergy for removal of emerging micropollutants in a drinking water treatment plant?

    Ozonation plays an essential role in water disinfection to inactivate viruses, bacteria and some parasites (Giardia). Ozone treatment rates to attain disinfection goals also result in oxidation reactions of emerging pollutants. Pharmaceuticals–except Ciprofloxacin–are very reactive to ozone: they are removed as early as the transfer compartment outlet even at an ozone treatment rate ...


    By IWA Publishing

  • A pilot plant study of the processes of filtration and adsorption of drinking water through granular activated carbons: a comparative study

    This study reports a procedure for the evaluation and comparison of the adsorption and filtration capacities of commercial activated carbons in the treatment of drinking water and the design and operation of a pilot plant to simulate the behavior of fast open filters made of granular activated carbon. The milestone of this experimental work was to determine the adsorption and filtration ...


    By IWA Publishing

  • City Water International explains The Basics of Water Filtration

    The Basics of Water Filtration Most of us know that filtered water is healthier than tap water because of its purity, but how does water filtration work? The basic principle is that filtered water has passed through a filter which removes contaminants through one of several methods, depending on the type of filter. Most water purification systems work in one of three ways ­ by running water ...


    By City Water International

  • Drinking Water Aesthetics Improve with Ozone Treatment

    High quality water sources for municipal use are dwindling, forcing utilities to seek alternate water sources. Many times, aesthetics are the only problem preventing the use of these alternate water sources for potable purposes. Although typically used as a disinfectant, ozone offers municipal water purveyors the benefits of being the strongest commercially available oxidizing agent (Table 1). ...

  • Removing Chloramines from Drinking Water Supplies

    Historically, most public water supplies have been treated with chlorine to satisfy the standards set by the Safe Drinking Water Act of 1974. Since being established, there is reason to believe that the standards may be too lenient on the allowable contaminant levels in our drinking water. For instance, chlorine and other disinfectants react with organic matter creating ...


    By General Carbon Corp.

  • Case study Madagascar - independent drinking water solution

    Client ADES Solaire, Switzerland (NGO) Location ADES Centre in St. Augustin, Madagascar Introduction The island Madagascar is suffering from a high rate of poverty. Most of the people have no access to clean drinking water. In 2009 ADES and its supporters established a pilot project for the use of renewable energy for ...


    By Trunz Water Systems AG

  • Treating Taste & Odor and Disinfecting Drinking Water with UV

    Cornwall is a city of nearly 60,000 people in Ontario, Canada. It is located on the St. Lawrence River, approximately 1,700 km from the Atlantic Ocean and 2,000 km from Lake Ontario. The city draws its drinking water from the St. Lawrence, a reliable and generally good-quality source. However, in the late summer and early fall, dying algae from algae blooms during the warmest months often ...

  • Improving the biological stability of drinking water by ion exchange

    To guarantee a good water quality at the consumer’s tap, natural organic matter (NOM) should be (partly) removed during drinking water treatment. The objective of this research is to measure the effect of NOM removal by ion exchange on the biological stability of drinking water. Experiments were performed in two lanes of the pilot plant of Weesperkarspel in the Netherlands. The lanes consisted of ...


    By IWA Publishing

  • VSEP treats well and surface water to provide ultra clean drinking water

    New Logic Research manufactures a proprietary vibrating membrane filtration system that is uniquely suited for treatment of commercial and domestic drinking water. The use of a vibrating membrane mechanism to avoid membrane fouling is new and is just the kind of improvement needed to make the use of membrane filtration an effective and economical treatment solution for drinking water. New Logic ...


    By New Logic Research, Inc.

  • Water recovery system reduces soft drink manufacturers water waste by 35%

    The filtration and water treatment specialist Puresep provide leading soft drinks manufacturer with a state of the art system to reduce their water usage Puresep were contacted to look at ways the soft drinks manufacturer could reduce the amount of rinse water sent to drain – in order to help them achieve their water reduction targets Following an onsite review of the current rinse ...


    By Water Active Ltd

  • Converting rain into drinking water: quality issues and technological advances

    With growing pressures on water supplies worldwide, rainwater harvesting is increasingly seen as a viable option to provide drinking water to an ever expanding population, particularly in developing countries. However, rooftop runoff is not without quality issues. Microbiological and chemical contamination have been detected in several studies, well above local and international guidelines, ...


    By IWA Publishing

  • Drinking water treatment, AFM replaces sand in sand filters

    Drinking Water Treatment by AFM, 30% - 80 improvement in sand filter performance Cryptosporidium problem and THM's eliminated. All sand filter will suffer to some degree from bacterial fouling. The alginates excreted by the bacteria cause coagulation of the sand grains which in turn leads to wormhole channeling of water through the filter bed. The worm holes provide a conduit for the ...


    By Dryden Aqua Ltd

  • Pilot study and modeling for salinity reduction in drinking water in Berjand

    The salinity of the ground water in Berjand, the capital of the province of South Khoorasan in Iran, has been a matter of concern since the ground water is the only source of drinking water in the city. Firstly, the authors studied the effects of both nano-filtration (NF) and reverse osmosis (RO) for the reduction of total dissolved solids (TDS) in the north and the south of the city. Secondly, ...


    By IWA Publishing

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