At the time, mechanical filtration ( or rapid sand filtration was just beginning to be understood as a treatment process.
12.
The first modern rapid sand filtration plant was designed and built by George W . Fuller in Little Falls, New Jersey.
13.
Recent studies show that sand filtration needs further improvements, but it is approaching optimization with its effectiveness at removing pathogens from water.
14.
The ?00, 000 project consists of a pool which is serviced by a sand filtration system and automatic chlorine level control computer.
15.
During his tenure at the water works, one of the first mechanical filtration ( or rapid sand filtration ) plants was built.
16.
The processes involved in removing the contaminants include physical processes such as settling and filtration, chemical processes such as disinfection and slow sand filtration.
17.
"The original treatment process was by slow sand filtration, flowing by gravity from the draw-off tower to the filter beds.
18.
The main operations performed by the treatment facilities are pre-clarification by flocculation with a coagulant, sand filtration and disinfection with ozone and chlorine.
19.
Rapid sand filtration has very little effect on taste and smell and dissolved impurities of drinking water, unless activated carbon is included in the filter medium.
20.
Sand filters are one of the most useful treatment processes as the filtering process ( especially with slow sand filtration ) combines within itself many of the purification functions.
