Sewage treatment plant

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    Though most developed countries treat sewage, treatment levels do not generally remove nutrients from the wastewater that is discharged. One exception is the state of Maryland (U.S.) where all major sewage treatment plants are required to upgrade to enhanced nutrient removal technologies that will remove most of the nutrients from the wastewater.
    Photo Credit: Chesapeake Bay Program

    cyberbourik, MaggieVil, prentissdarden, and 1 other people added this photo to their favorites.

    1. Discover5TV 29 months ago | reply

      Thank you for sharing! I used your photo in this video

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