How a Septic Tank Works | Long Island Cesspool & Septic Services | www.NYSeptic.com
How a Septic Tank Works The septic tank is defined as “A tank in which waste matter is decomposed through bacterial action.” Today’s septic tank is a watertight box usually made of precast concrete, concrete blocks, or reinforced fiberglass. A septic tank is a small, on-site treatment and disposal system buried in the ground. the septic system has two main parts, one - the septic tank and two - the soil absorption area. When waste water from your home enters the septic tank this is what happens: 1. Organic solid waste floats to the surface and forms a layer of what is commonly called “scum.” Bacteria in the septic tank biologically digest and convert this material to liquid. 2. Inorganic solid materials and the by-products of bacterial digestions sink to the bottom of the tank and form a layer commonly known as “sludge.” 3. There’s only clear water between the scum and sludge layers. It is this clear water – And only this clear water – that should overflow ...
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