[沅 格 FRP products] Principle of septic tank
(Picture from the home of electromechanical)
The glass reinforced septic tank is a treatment facility for removing suspended organic matter in domestic sewage by using the principles of sedimentation and anaerobic fermentation, and belongs to the primary transitional life treatment structure.
Domestic sewage contains a large amount of feces, paper scraps, and pathogens. The suspended solids concentration is 100 ~ 350mg / L, and the organic matter concentration BOD5 is between 100 ~ 400mg / L. Among them, the suspended organic matter concentration BOD5 is 50 ~ 200mg / L. After the sewage enters the septic tank for 12 to 24 hours, 50% to 60% of suspended matter can be removed. The sedimented sludge undergoes anaerobic digestion for more than 3 months, and the organic matter in the sludge is decomposed into stable inorganic matter. The perishable raw sludge is converted into stable mature sludge, which changes the structure of the sludge and reduces The moisture content of the sludge. The sludge is regularly removed for transportation, landfilled or used as fertilizer.