HR: 0830h
AN: H21D-0878    [PDF]
TI: Prevention of Pollution or Salinity Expansion in the Aquifers by Stream of Compressed Air Through the Well
AU: * Boger, M
EM: boger@shani.net
AF: Dr. Michael Boger, 12 Haarava St., Herzelya, 46309 Israel
AB: Stream of compressed air through the well between polluted (or sea) water and fresh water creates the "hydraulic wall" that prevents mixing of them. Steady influx of air to saturated soil produces the pressure gradient from the well and replaces the water by air. Interfaces increase between air and water. After stopping the compression process the conductivity of the soil will decline because the pores are blocked by the air. It is very welcome phenomenon in the interfaces area that prevent on one hand the lost of the fresh water to the sea and decreases the sea water movement into the aquifer on the other hand. Upper streaming the air through unsaturated zone declines the water and pollution vertically down-seepage and defends the fresh water against pollution. Approximately obtained shape of air-water interface, for quasi steady-state stream, is an inverted cone. The necessary pressure to initial the air stream in the deep layers of the aquifer is about tens percent higher than static water pressure in the well in these layers. Key words: Prevention of pollution, compressed air
DE: 1829 Groundwater hydrology
DE: 1832 Groundwater transport
DE: 1842 Irrigation
SC: Hydrology [H]
MN: 2003 Fall Meeting