Entries for the 'Water Treatment' Category

28

This series of 13 videos from Indigo Water Group walks through the procedures for solving common water or wastewater math problems. Viewers are able to learn how to solve problems in a step-wise process by following along with the video, which demonstrates and explains each step.

The playlist contains three unit conversion tutorials, five geometry tutorials, three dosing tutorials, one that calculates pump run time to reduce MLSS concentration, and one that calculates VSS loading rate to an anaerobic digester.

13

This year’s annual conference of the Association of State Drinking Water Administrators was held on October 23-22, 2014 in Albuquerque New Mexico. There were many interesting presentations on water emergencies, source water planning, and tools for operators as well as new ideas for the future of the drinking water industry. One presentation dug a little bit into the history of the drinking water industry and possibly one its greatest accomplishments, chlorinated disinfection.

Dr. Michael J. McGuire started off by presenting a history of the diseases and deaths that occurred due to contaminated water. He then goes to describe the dilemma of a contaminated water supply in Jersey City, New Jersey in the 1800s. The city contracted with a private water company so they could have a “…pure and wholesome” water supply. Driven by a court order, a Sanitary Advisor named Dr. John Rose Leal determined that some kind of disinfection needed to occur in order to achieve this goal. The disinfection he chose to use was chlorine, a chemical often used at the time in the laundry industry and to disinfect streets and homes after an infectious disease had passed through.

Before this time, using a chemical in water was unprecedented and frankly a little scary. Using the expertise of sanitary engineer George Warren Fuller, they designed a chlorination plant in 99 days. (The system set up as well as pictures of the actual plant can be found at the presentation link below.) The judge approved the design and the system was built. The use of the chemical by the city was a triumph and waterborne illness rates decreased.

The news of success in New Jersey soon spread across the country, and soon after, chlorine use as a disinfectant exploded in the United States. Deaths from typhoid and other diseases related to water contamination diminished to incredibly low levels.

This great accomplishment was a huge advancement for the drinking water industry and helped disinfection technology leap forward. Dr. John L. Leal died soon after his success in New Jersey and was barely recognized for his monumental discovery until 2013, when the New Jersey Section of AWWA and Dr. Michael J. McGuire organized efforts to create a monument in his name.

Dr. McGuire wrote a book on this discovery titled The Chlorine Revolution: Water Disinfection and the Fight to Save Lives. It can be found on Amazon. His conference presentation can be found at the link below as well as in our document database (Keyword: “chlorine revolution”)

 

09

RCAC, the western affiliate of the RCAP network, has partered with The California Endowment and the Pueblo Unido Community Development Corporation to launch an Indiegogo campaign. Indiegogo is a crowdfunding platform, similar to Kickstarter, that allows the public to contribute towards an initiative. Unlike Kickstarter, the funding model is not "all or nothing".

The Health Happens Here #Agua4All campaign would enhance access to safe drinking water in the Eastern Coachella Valley of California by connecting an existing arsenic treatment system to a community building. The campaign's promotional video explains how the initiative would help this community's 14,000 residents.

With this funding, RCAC will provide the infrastructure "from pipes to permits". Pueblo Unido has been active in helping communities across this economically-disadvantaged rural area address levels of arsenic that excess USEPA's standard. The California Endowment is using this effort as a pilot project and hopes to expand it statewide.

06

AWWA's Cross Connection Control Committee recently finalized two public service videos to illustrate cross connection control procedures and backflow prevention. The videos represent a knowledgeable reference to educate utilities and water professionals about the importance of proper selection and installation of backflow preventer and cross connection control devices.

Thanks to AWWA's Technical & Education Council for sharing these resources with us!

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