Septic systems

Septic systems process sewage by: Sedimentation, which is the separation of the solids from the Liquids which occurs in the tank itself. Decomposition which is the liquefaction of the sewage it requires It requires the aid of bacteria and takes place in two processes. Aerobic requires oxygen Anaerobic which does not require oxygen Purification: This takes place in the absorption field.

Parts of a septic system: House sewer: 4-6 inch line with a slope of 2 feet, 1 foot minimum, per 100 Feet of run Below frost line of soil Septic tank: Can be made out of metal, concrete, plastic, or fiberglass. Should be big enough to hold sewage for 70 hours before releasing. 750 gallon minimum and you should add 150 gallons for every Bedroom in the dwelling. At least 30 feet downhill from the house, in a straight line with the House. Sewage entering the tank should be directed down into the tank, and Liquid leaving the tank should have no solids in it.

Sewer outlet should be 4 to 6 inch pipe that are water tight connected to The drain field. Absorption field: Must be located 200 feet away from water sources. Located away from wet areas. Located where there is NO flooding possible. Drain lines are usually parallel 10 feet away from each other. Lengths of fields depends upon the absorption rate of the soil.

Care and maintaince: Do NOT use excessive chemicals in drain water as it may kill the Bacteria in the tank. Do NOT use too much soap when washing as it may cause excessive Foaming in the tank. Not separating solid and liquid. Do not allow excessive grease to flow down the drain as it may cause The tank to fill up quickly Do NOT forget where the tank is located, or plant trees near the tank Or absorption field. Do install a grease trap Do pump the tank when the sludge reaches about a foot deep in the Tank. Have it inspected occasionally(more than once every thirty years)