BALLASTING SYSTEM FOR ON-SITE SEWAGE TREATMENT AND DISPOSAL SYSTEM

摘要

A ballasting system for an on-site sewage treatment and disposal system forareas having aground water level above a minimum depth below grade. A perimeter barrier isarranged around aselected subterraneal volume within a ground area. The perimeter barrier has acircumference and aclosed end closest to atmosphere. A pump having a gas intake and a dischargeside whichdischarges gas at a pressure greater than atmospheric pressure is alsoprovided. The discharge sideof the pump is in fluid communication with the selected subterraneal volume tolower the groundwater level within the perimeter barrier to a level at or below the minimumdepth below grade. Aflexible membrane is located adjacent the perimeter barrier end and within theground area. Theflexible membrane extends over substantially the entire circumference of theperimeter barrier. Aplurality of ballasting beams is located above the flexible membrane andwithin the ground area.Each of the beams extends across the circumference of the perimeter barrier.Each end of the beamsis anchored within the ground area by an anchor.