This pilot study was conducted to assess the utility of using a health insurance database for the automated detection of waterborne outbreaks of acute gastroenteritis (AGE). The weekly number of AGE cases for which the patient consulted a doctor (cAGE) was derived from this database for 1,543 towns in three French districts during the 2009–2012 period. The method we used is based on a spatial comparison of incidence rates and of their time trends between the target town and the district. Each municipality was tested, week by week, for the entire study period. Overall, 193 clusters were identified, 10% of the municipalities were involved in at least one cluster and less than 2% in several. We can infer that nationwide more than 1,000 clusters involving 30,000 cases of cAGE each year may be linked to tap water. The clusters discovered with this automated detection system will be reported to local operators for investigation of the situations at highest risk. This method will be compared with others before automated detection is implemented on a national level.
Five of the Best Cooling Tower Water Treatment Equipment Supply and Technology Companies
Here at SAMCO technologies, our custom-engineered, cutting-edge solutions for your cooling tower water treatment needs have been developed by helping our customers solve some of the most complex purity and separation issues globally for over 40 years. Because of our skilled engineers and overall expertise in cooling tower water treatment, we are confident that our solutions are some of the best in the industry. However, we also realize we might not be the best fit for everyone, and we feel that it’s...
Techniques for Oil in Water Analysis
The people responsible for conducting oil in water measurements understand thatthe measurement can be quite challenging. Wastewater from different sources cancontain many different types of hydrocarbons, each with different chemical make-ups.On top of the lack of chemical uniformity in different oils, there has been a largevariety of methods developed to quantify the oil in the wastewater. While none of thefollowing methods is perfect, each will have its own advantages and disadvantagesfor oil in water analysis.Oil...
It Began With A Little Red Wagon: Collecting Real Information To Make Critical Decisions
Tarrant Regional Water District (TRWD) and Pure Technologies U.S. (Pure) have a long history of working together to keep the water transmission mains in the Dallas-Fort Worth (DFW) area in good operating condition. The partnership began 17 years ago with mutual development of electromagnetic technology to inspect prestressed concrete cylinder pipe (PCCP). One of Pure’s first electromagnetic inspection prototypes was developed (with funding assistance from American Water Works Research Foundation [now Water...
A Practical Solution for Real Time Organic Monitoring
Monitoring organics continuously provides instantaneous water quality data that is vital for several of the most common water and wastewater treatment applications. Online organic water quality testing ensures that immediate action can be taken to establish proper treatment. real-time organic monitoring is invaluable for optimizing and controlling coagulant dosing; monitoring performance and condition of activated carbon filters; determining uV dose; indicating potential formation of disinfection byproducts...
Sea water treatment for shrimp farming - Case Study
Global demand for seafood remains high, yet farming shrimps in aquaculture is a tricky business. Disinfection and desalination systems significantly improve the water quality in the breeding tanks, thereby improving the shrimp survival rate. Task Aquaculture - a growth market Shrimps are a popular delicacy, especially in Europe and the USA. According to the Food and Agriculture Organization of the United Nations (FAO), approximately 3.5 million tons of "white" shrimps are now produced annually. China and...