Question

draw a septic tank and explain how it works ​

Answer 1

Answer:

The septic tank is a buried, water-tight container usually made of concrete, brick masonry, fiberglass or polyethylene.  Its job is to hold the wastewater long enough to allow solids to settle down to the bottom (forming sludge), while the oil and grease floats to the top (as scum). 3.

Explanation:

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Answer 2

Answer:

In the septic tank sewage from houses flows through drains and into

underground tanks made of cement and stones.The solid waste in the sewage settle down at the bottom. Angerbic bacteria in the tank decompose the solid waste. Wastewater then moves out of the perforated pipes into the soil and percolates into the soil. It then gets

filtered through the pores of the soil and joins the groundwater.