![]() ![]() May negatively affect soil and groundwater properties Primary treatment is required to prevent clogging Not all parts and materials may be locally available Requires expert design and construction Relatively low capital costs low operating costs Low maintenance requirements if operating without mechanical equipment Has a long lifespan (depending on conditions) Can be used for the combined treatment and disposal of effluent The collection technology which precedes the leach field (e.g., Septic Tank, S.9) should be equipped with a sewer connection so that if, or when, the leach field needs to be replaced, the changeover can be done with minimal disruption. It will not interfere with a future sewer connection. A leach field should be laid out such that To prevent contamination, a leach field should be located at least 30 m away from any drinking water source. The trenches should be dug no longer than 20 m in length and at least 1 to 2 m apart. The pipe should be placed at least 15 cm beneath the surface to prevent effluent from surfacing. A final layer of sand and/or topsoil covers the fabric and fills the trench to the ground level. A layer of geotextile fabric is placed on the rock layer to prevent small particles from plugging the pipe. The bottom of each trench is filled with about 15 cm of clean rock and a perforated distribution pipe is laid on top. Each trench is 0.3 to 1.5 m deep and 0.3 to 1 m wide. ![]()
0 Comments
Leave a Reply. |