VDA - Plumbing (Part 5)

A layer of sewage matter that rises to the surface of the sewage in a septic tank

• Scum

• Sludge

• Effluent

• Leach

Sediment that settles out of sewage, forming a semi-solid mass on the bottom of a septic tank

• Scum

• Sludge

• Effluent

• Leach

Liquid sewage that has been treated in a septic tank or a sewage treatment plant

• Scum

• Sludge

• Effluent

• Leach

To cause water or other liquid to percolate through something, so as to dissolve out soluble constituents

• Scum

• Sludge

• Effluent

• Leach

A covered pit for receiving the sewage from a house, having a perforated lining to allow the liquid portion of the sewage to leach into the ground while the sludge is retained in the pit to undergo decomposition

• Cesspool

• Seepage pit

• Septic tank

• Dosing chamber

No longer acceptable as a means of sewage disposal

• Cesspool

• Seepage pit

• Septic tank

• Dosing chamber

A pit that is lined with a perforated masonry or concrete wall to allow effluent collected from a septic tank to seep or leach into the surrounding soil, sometimes used as a substitute for a drainfield

• Cesspool

• Seepage pit

• Septic tank

• Dosing chamber

A covered watertight tank for receiving the discharge from a building sewer, separating out the solid organic matter, which is decomposed and purified by anaerobic bacteria, and allowing the clarified liquid to discharge for final disposal

• Cesspool

• Seepage pit

• Septic tank

• Dosing chamber

A chamber of a large septic tank employing siphonic action to automatically discharge a large volume of effluent when a predetermined quantity has accumulated

• Cesspool

• Seepage pit

• Septic tank

• Dosing chamber

A filter for cleansing water or purifying effluent, consisting of layers of coarse stone, coarse gravel, and sand becoming finer toward the top

• Sand filter

• Subsurface sand filter