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"When domestic wastewater is treated, a solid by-product accumulates in the wastewater treatment plant and must be removed periodically to keep the plant operating properly. The collected material, called biosolids or more commonly "sewage sludge," is high in organic content, and contains moderate amounts of nutrients that are needed by plants.
A publicly owned treatment works (POTW) is a term used in the United States for a sewage treatment plant owned, and usually operated, by a government agency. In the U.S., POTWs are typically owned by local government agencies, and are usually designed to treat domestic sewage and not industrial wastewater .
Sewage treatment plant (a type of wastewater treatment plant) in La Crosse, Wisconsin. Wastewater treatment is a process which removes and eliminates contaminants from wastewater. It thus converts it into an effluent that can be returned to the water cycle. Once back in the water cycle, the effluent creates an acceptable impact on the environment.
Florida Governor Jeb Bush was a supporter, [14] and President George H. W. Bush received his teacher certification through an alternative program. [15] The Utah House Standing Committee introduced HB0110 and, although it did not pass, the American Board program was approved in November 2004 by the Utah State Board of Education. [16]
Florida (/ ˈ f l ɒr ɪ d ə / ⓘ FLORR-ih-də; Spanish: [floˈɾiða]) is a state in the Southeastern region of the United States.It borders the Gulf of Mexico to the west, Alabama to the northwest, Georgia to the north, the Atlantic Ocean to the east, and the Straits of Florida and Cuba to the south.
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High rate aerobic treatment processes like activated sludge plants, trickling filters, rotating discs, submerged aerated filters or membrane bioreactor plants require less space. The advantage of subsurface flow constructed wetlands compared to those technologies is their operational robustness which is particularly important in developing ...
Biological growth is attached to the surface of the disc and forms a slime layer. The discs contact the wastewater with the atmospheric air for oxidation as it rotates. The rotation helps to slough off excess solids. The disc system can be staged in series to obtain nearly any detention time or degree of removal required.