Gravel Guy

Wm Konoval & Sons

Construction Co. Ltd.

 

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Replacing Old Beds    

Conventional Septic Beds

Typical Raised Leaching Bed
A septic system is made up of a septic tank and a septic bed (also known as a weeping bed, tile bed, leach field, disposal field or just field). 

Waste water from the house flows into the septic tank. The purpose of the tank is to hold the water long enough so that the solids can settle out. 

About 50% of the solids decompose in the tank. The sediment settles out on the bottom of the tank as sludge. Lighter particles form a scum at the top. This process leaves a middle layer of partially clarified water. An outlet baffle in the tank is positioned to allow only this middle water layer to flow out of the tank and into the septic bed. Both the sludge and the scum stay inside the tank.

The liquid waste contains contaminants such as nitrates, phosphorus, disease causing bacteria and viruses, dissolved metals, detergents and solvents. The septic bed acts as a leaching field. 

The phosphorus and dissolved metals is partially bound by the soil. Nitrates and nutrients are consumed by naturally occurring bacteria. Bacteria and viruses are filtered by the soil or die off. This works only if the septic system was properly designed and is properly maintained. 

Proper setbacks from the water must be respected.  Bylaws and regulations are set so that the impacts on our environment is negligible.

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Last modified: April 17, 2010