Question

how does a septic tank function

Answer 1

Septic systems are underground wastewater treatment structures, commonly used in rural areas without centralized sewer systems. They use a combination of nature and proven technology to treat wastewater from household plumbing produced by bathrooms, kitchen drains, and laundry.

A typical septic system consists of a septic tank and a drainfield, or soil absorption field.

The septic tank digests organic matter and separates floatable matter (e.g., oils and grease) and solids from the wastewater. Soil-based systems discharge the liquid (known as effluent) from the septic tank into a series of perforated pipes buried in a leach field, leaching chambers, or other special units designed to slowly release the effluent into the soil or surface water.

Alternative systems use pumps or gravity to help septic tank effluent trickle through sand, organic matter (e.g., peat and sawdust), constructed wetlands, or other media to remove or neutralize pollutants like disease-causing pathogens, nitrogen, phosphorus, and other contaminants. Some alternative systems are designed to evaporate wastewater or disinfect it before it is discharged to the soil or surface waters.

Answer 2

Answer:

Ans- 1.) Septic tank of the size 2m× 2m × 4m is dug up on the land available

near by the house.

2.) The septic tank is filled with 15 to 20 CM thick layer of grit made from

broken bricks.

3. ) Pipe is laid to wastewater from the toilet ,Kitchen sink and wash basin in

the house to the septic tank .Another pipe is laid connecting the toilet seat

outlet to the septic tank.

4.) At the top of the septic tank an outlet pipe is provided to carry over flowing

water from the tank to the nearby kitchen garden or disposal train.

5.) In the due course, microbes developed into the the solid waste going into

the septic tank which clean and remove the sludge from time to time.