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A septic tank is an underground chamber made of concrete, fiberglass, or plastic through which domestic wastewater flows for basic sewage treatment. [2] Settling and anaerobic digestion processes reduce solids and organics, but the treatment efficiency is only moderate (referred to as "primary treatment"). [2]
Septic tank and drain field microorganisms have very limited capability for catabolizing petroleum products and chlorinated solvents, and cannot remove dissolved metals; however, some may be absorbed into septic tank sludge or drain field soils, and concentrations may be diluted by other groundwater in the vicinity of the drain field. Cleaning ...
Feb. 9—For the last few years, Mower County has been seeking a path toward improving how it conducts inspections for septic systems within the county. They are now zeroing in on that goal as it ...
Effluent sewer systems, also called septic tank effluent drainage (STED) or solids-free sewer (SFS) systems, have septic tanks that collect sewage from residences and businesses, and the effluent that comes out of the tank is sent to either a centralized sewage treatment plant or a distributed treatment system for further treatment. Most of the ...
Effluent sewer systems, also called septic tank effluent gravity (STEG), solids-free sewer (SFS), or septic tank effluent drainage (STED) systems, have septic tanks that collect sewage from residences and businesses, and the liquid fraction of sewage that comes out of the tank is conveyed to a downstream receiving body such as either a ...
A report by World Bank, International Labour Organization, WaterAid and WHO from 2019 defines "sanitation workers" to include toilet cleaners and caretakers in domestic, public, and institutional settings; those who empty pits from pit latrines and vaults of septic tanks and other fecal sludge handlers; those who clean sewers and manholes; and those who work at sewage treatment plants and ...
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