Showing results for: microbial contamination Articles
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Microbiologically-Influenced Corrosion: Matching the Right Tool to the Job
Microbiologically-Influenced Corrosion (MIC, for short) is now a well-documented phenomenon, and is estimated to cost the United States economy nearly $150 billion annually (Source: Liang Research Group, Colorado School of Mines). This being no small amount of money, there is significant interest and awareness regarding the causes of MIC and strategies that can be used to mitigate its impact. ...
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Dilurit® CaR-System: Improvement in deposit control
Learn more about Kurita´s developed and patented Dilurit® CaR-System - the innovative improvement in deposit control: https://www.slideshare.net/KuritaGlobal/dilurit-carsystem-improvement-in-deposit-control Dilurit® CaR-System is a mild oxidizing biocide in combination with a booster agent. A broad spectrum of efficacy, a long-lasting success and a good compatibility with other ...
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Sugar Syrup Disinfection – Spain and New Zealand
Hanovia Sugar Syrup UV Systems Background Liquid Sweeteners are produced from sugar beet, sugar cane, corn, starch and artificial substances. These sweeteners are added to final products throughout the Beverage and Food industries, and therefore must be treated to comply with all global regulations for product hygiene. The common methods used for ensuring microbiological quality of ...
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Microbiological contamination of water pans in Baringo County
Water pans constitute the main source of rural water supply in Baringo County. This study sought to assess the spatial-temporal variation of total coliforms, Escherichia coli, Fecal streptococcus and Salmonella species in the water pans. A sanitary survey was conducted to observe the potential sources of microbial contamination on the water pans. Water was sampled from one protected and five ...
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Environmental health aspects of drinking water-borne outbreak due to karst flooding: case study
Climate change may increase the incidence of waterborne diseases due to extreme rainfall events, and consequent microbiological contamination of the water source and supply. As a result of the complexity of the pathways from the surface to the consumer, it is difficult to detect an association between rainfall and human disease. The water supply of a Hungarian city, Miskolc (174,000 inhabitant), ...
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Why Wait Until Tomorrow To Know Today`s Water Quality?
As water management continues to move to the forefront of worldwide resource concerns, better information is required to facilitate effective decision making. Not only does the information have to better, it also has to be obtained faster and from multiple locations. When public health is at stake, the results must come quickly. Heterotrophic Plate Counts and other culture-based tests have ...
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Modelling removal of microbiological contaminants along a series of constructed wetlands
The rate of removal of microbial pollutants along a series of constructed wetlands for treating wastewater in Covenant University, Ota, Nigeria were monitored from inlet to the discharge point into river Atuara and at 300 m upstream and downstream. The microbiological test results analysed were those of most probable number (MPN) of coliforms ( Escherichia coli ), coliform counts in cfu/100 ...
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DelAgua Kit Case Study - Comet-ME Testing in South Mount Hebron Region
Comet-ME is an Israeli-Palestinian NGO providing sustainable off-grid energy and water services to rural Palestinian communities in the South Mount Hebron region of the occupied Palestinian territories. The local Palestinian communities are not connected to the water grid and people depend on seasonal rainfall for their water supply, harvesting the rainwater in cisterns. Come-ME's water ...
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PVC-piping promotes growth of
Ralstonia pickettii in dialysis water treatment facilitiesBiofilms forming inside dialysis water treatment systems are one of the main sources of microbiological contamination. Among the bacteria found in biofilms, Ralstonia pickettii is frequently encountered in dialysis water treatment systems and has been shown to develop extreme oligotrophic talents. In Austria, R. pickettii was exclusively detected in high numbers in dialysis water treatment ...
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Creation of innovative experimental prototypes to meet health safety challenges in thermal spas
It is essential to preserve the quality of natural mineral water from its origin to the points of use, so as to ensure sanitary safety for patients within the thermal spas. The complexity of water systems may lead to issues linked to microbiological and physico-chemical contaminations which are necessary to be solved in order to keep the installations in compliance with the regulations in ...
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Closed circuit Water Treatment Chemicals
The problems encountered in closed circuit systems are like those in open systems – corrosion, suspended solids, scale, and microbiological contamination. However, there are differences between the systems which require us to treat them in different ways. The fixed volume, low make-up of a closed system allows us to dose water treatment products at much higher levels than is possible in ...
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Influence of solar water disinfection on immunity against cholera – a review
Cholera remains a problem in developing countries. This is attributed to the unavailability of proper water treatment, sanitary infrastructure and poor hygiene. As a consequence, countries facing cholera outbreaks rely on interventions such as the use of oral rehydration therapy and antibiotics to save lives. In addition to vaccination, the provision of chlorine tablets and hygiene ...
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Effectiveness of silver and copper infused ceramic drinking water filters in reducing microbiological contaminants
A series of bench-scale experiments were conducted on ceramic filters with various amounts of silver and/or copper nanoparticles fired-in during the manufacturing process. The experiments were designed to determine the efficacy of the filters on the removal of pathogens from drinking water. Escherichia coli and MS2 were employed as non-pathogenic surrogates for pathogenic organisms. ...
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Biological aspects of slow sand filtration: past, present and future
For over 200 years, slow sand filtration (SSF) has been an effective means of treating water for the control of microbiological contaminants in both small and large community water supplies. However, such systems lost popularity to rapid sand filters mainly due to smaller land requirements and less sensitivity to water quality variations. SSF is still a particularly attractive process because its ...
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Project - Treatment of Raw Water from Lake Constance
Sipplinger Berg Waterworks The Lake Constance Water Supply Authority extracts more than 130 million m³ of water every year from locations 60 m below the lake’s surface. EVERZIT® N plays an essential part in ensuring clear and pure supply from Europe’s biggest drinking water reservoir to some four million consumers in surrounding areas. The Sipplinger Berg treatment plant, an ...
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Modeling and evaluation of compliance to water quality regulations in bathing areas on the Daoulas catchment and estuary (France)
The microbiological quality of waters in estuaries determines their acceptability for recreational uses. Microbiological contamination often results from urban wastewater discharges or non-point source pollution (manure spreading), and can cause bathing zones to be closed. European regulations (EC/7/2006) have proposed standards (500 E. coli/100 ml) for the acceptability areas for bathing. In ...
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Microbiological quality of bottled water brands sold in retail outlets in New Zealand
The microbiological quality of bottled water has been studied over the past 30 years as bottled water can contain pathogens. The aim of this study was to determine if retailed bottled water in New Zealand complied with the Australia and New Zealand Food Standards (ANZFS) Code (2002) and the New Zealand Microbiological Reference Criteria (1995). Thirty-eight domestic and imported bottled water ...
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Quality and suitability of harvested rainwater for drinking in Bangladesh
Several programs have been undertaken during the last few years to install rooftop rainwater harvesting systems as an alternative drinking water supply source both in the coastal and arsenic affected areas in Bangladesh. In this study, quality of the harvested rainwater used for drinking water supply was assessed. A total of 308 harvested rainwater samples were collected from the different ...
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Feasibility assessment of surface water disinfection by ultrafiltration
Ultrafiltration (UF) has been presented as an alternative to chemical disinfection to obtain safe drinking water, for its ability to remove microbiological contamination. Hollow-fiber UF membranes are designed as an effective barrier to microorganisms, for their high manufacturing integrity and for the ‘potting’ method adopted to seal fibers to the feeding/extraction manifold. ...
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Impact of a natural coagulant pretreatment for colour removal on solar water disinfection (SODIS)
Solar water disinfection (SODIS) is the process of treating microbiologically contaminated water in clear plastic bottles through exposure to sunlight. One of the major limiting factors of this treatment is source water quality. This work investigates the impact of source water colour on SODIS efficiency and evaluates a natural coagulant for colour removal. The ability of Moringa oleifera seed ...
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