continuous turbidity monitoring Articles
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Assessment of erosion and sedimentation dynamic in a combined sewer network using online turbidity monitoring
Eroded sewer sediments are a significant source of organic matter discharge by combined sewer overflows. Many authors have studied the erosion and sedimentation processes at the scale of a section of sewer pipe and over short time periods. The objective of this study was to assess these processes at the scale of an entire sewer network and over 1 month, to understand whether phenomena ...
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Turbidity Measurement - Not Only Nephelometric At 90°
This article was featured in Lab Asia - July/August 2008 Turbidity can be described only with limitations as a physical and technical measurement category. The unusual nature of the turbidity measurement in comparison to other parameters can be recognised already in its historical development: Initially a procedure was introduced by Jackson and Whipple around 1900 determining turbidity by means ...
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Dynamics of pollutant discharge in combined sewer systems during rain events: chance or determinism?
A large database of continuous flow and turbidity measurements cumulating data on hundreds of rain events and dry weather days from two sites in Paris (called Quais and Clichy) and one in Lyon (called Ecully) is presented. This database is used to characterize and compare the behaviour of the three sites at the inter-events scale. The analysis is probed through three various variables: total ...
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Organic Matter in Drinking Water: A Guide for Simple Online Monitoring
Control of dissolved organics has been one of the highest priority concerns for most water treatment plants for over 20 years. Organics monitoring is an even more critical issue today in the face of more stringent regulations and concerns around trace organics, emerging contaminants, and even counter-terrorism or water security. Despite the critical need, many plants still rely primarily on ...
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Seatac airport third runaway - Case Study
Active Treatment with 1% ChitoVan™ Chitosan Acetate The west side of Sea-Tac airport was widened by adding 11 million cubic yards of fill dirt to create the 3rd runway. Because the west side of the airport drains to Miller Creek, a protected NW stream, all of the construction stormwater had to be captured and treated prior to discharge. During the project over 5 billion gallons of water ...
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Optimize Chemical Dosage for Water Treatment with UV254
Drinking water plants that use surface water or groundwater under the influence of surface water are susceptible to high levels of organic matter in the raw water. Reduction of organic matter through coagulation/ sedimentation and filtration plays a critical role in lowering the potential for disinfection by-product formation (DBP) and minimizing operational problems. Organic matter in water ...
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