| 摘要 |
The invention most fundamentally is a leaching system substantially consisti ng of subsystems of liquid permeable conduit, serial or parallel interconnected fo r the serial or parallel flow of fluid being processed. Fluid flow is within subsystems and between subsystems from one level to another level. I.e., the subsystems of which the system is comprised are located at different depths one above the other within a "leach bed" or within the volu me designed to process the leached fluid. The leaching system has at least two (2) leaching subsystems wherein each of the leaching subsystems is planarly located at a different depth within the leaching field having the leaching system installed therein. The leaching subsystems are fluid flow connected, using tubing, such that fluid being leached either flows; (1.) sequentially or serially through one of the subsystems and then sequentially or serially through another of the subsystems and subsequently through yet another subsystem until the last of the subsystems; or (2.) the fluid being leached is divided such that the divided portions flow in a parallel paths or substantially simultaneously through one of the subsystems and then subsequently through t he remaining subsystems either simultaneously or sequentially and in either sequential fl ow or parallel flow within the components of the subsystems. The system permits a greater densit y of bacteria within a leaching area. The multi-level system allows a straightforward installation of a leaching system in small or irregularly shaped areas where installation of effective single level systems would be difficult or impossible.
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