Wastewater Treatment

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    Fish stories

    Endocrine disrupting chemicals (EDCs), which have been detected at trace concentrations in waters around the world, interfere with hormonal processes and alter the way organisms reproduce and develop.

     
  • Judge Approves Use of Biosolids

    Overturning an earlier ban, a U.S. District Court has granted the city of Los Angeles and other agencies, businesses, and farmers the right to use biosolids for crop fertilization, landscaping, and other applications.

     
  • Samples used to fight crime

    When residents are doing something they shouldn't—namely, illicit substances like crystal methamphetamine and cocaine—your influent shows it.

     
  • A conduit to cleanliness

    Chicago's Metropolitan Water Reclamation District (MWRD) is one of a handful of U.S. treatment districts that doesn't disinfect its wastewater before discharging into local fresh water sources--and environmental groups aren't happy about it.

     
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    From sludge to fuel

    Five Los Angeles-area sanitation districts have signed on with Atlanta-based EnerTech Environmental, a developer of renewable energy technologies, to convert their biosolids into a renewable fuel, called E-Fuel.

     
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    Sales Job

    Convincing residents to go into debt to replace a perfectly good septic system was a challenge that both Bullhead City and Lake Havasu City approached aggressively.

     
  • Lead by Example

    Engineers designed the 0.3 mgd Greater Bayfield Wastewater Treatment Plant (GBWWTP) with one goal in mind: to showcase environmentally friendly technologies as a state demonstration plant.

     
  • Holiday cheer shows up in sewage

    According to University of Washington researchers, those snickerdoodles you scarfed down during the holidays could have an impact on the water system.

     
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    From moo juice to mojo

    Milk: it does a body good. And, thanks to new ultra-clean electricity generation technology, it'll help out a California wastewater plant, too.

     
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    Tight squeeze

    Membrane filtration isn't just for big cities. Two small water districts are using the decade-old technology to combat discharge requirements and prepare for growth.

     
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    Screenings become a piece of cake

    The Meriden, Conn., Water Pollution Control Facility has reduced organic content and waste volume with the Screenings Washer Monster, a device that grinds, washes, compacts, and dewaters bar screenings. Since installing the device, the facility has eliminated odor, handling of screenings, and...

     
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    Durham county takes the LEED

    Durham County's Triangle Wastewater Treatment Plant in North Carolina, the nation's only LEED-certified (Leadership in Energy and Environmental Design) waste-water administration building, has set a new standard in public works.

     
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    Soap ingredient mucks up agriculture

    According to a recent study, an ingredient in antibacterial hand soap remains in municipal sludge after waste-water treatment and accumulates in crop fertilizer.

     
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    Down to a Science

    Future permit limits are a genuine concern for those in wastewater treatment—especially total nitrogen (TN) limits. Most forecasters predict TN limits will be cut from the current 5 to 10 mg/L range down to somewhere around 3 mg/L. However, TN removal is not new; development of treatment systems...

     
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    Keeping control from a distance

    With the right instrumentation and controls, a sewer plant can be operated effectively from a remote location, as the Board of Water and Sewer Commissioners of the city of Mobile, Ala., has demonstrated at one of its facilities. The Wright Smith wastewater treatment facility, a trickling filter...

     
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    Project converts grease to energy

     
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    Vacuums save time, money

    Albuquerque, N.M., evokes images of spectacular western panoramas, desert sunsets, and Native American culture. This natural beauty was put in jeopardy in the late 1980s. Population in the unincorporated areas of Bernalillo County had been growing steadily for years.

     
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    Ohio builds membrane bioreactor plant

     
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    Upgrading to Class A anaerobic digestion

    More utilities are looking at producing Class A biosolids from municipal wastewater sludges as a way to reduce their regulatory requirements and improve their program's image with the public. The question is, what is the best way to convert an existing Class B biosolids digestion system into a...

     
 
 
 
 

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