Name: Sanitation at Public Places
Uploaded: 2019-07-19
Duration: 3 min 34 s
Description: We are aware that basic sanitation in our surroundings is a key necessity for healthy living. But, how can we maintain sanitation, and what are its true impl...

Question

Explain alternative methods of sewage disposal.

Accepted Answer

Some alternative methods of sewage disposal are septic tanks, biogas plants, and vermi-composting toilets.

Septic tanks: Low-cost septic tanks, also known as onsite disposal systems, are encouraged in semi-urban areas to manage waste. Household wastewater is allowed to flow into an underground septic tank using this method. Inside the tank, the sludge settles to the bottom and the lighter waste floats to the surface. Bacteria found in sewage aid in the partial decomposition of solid waste. The liquid waste is then allowed to drain from the tank via pipes and into the ground, where it mixes with the soil below.

Biogas plants: Setting up a biogas plant is one method of waste disposal that is common in India, particularly in villages and small towns. In this method, human and animal excreta flow through covered drains into biogas plants. Microorganisms decompose the waste and produce biogas. This biogas is then used to generate electricity.

Vermi-composting toilets: In India, vermicomposting toilets have been developed as an alternative method of waste disposal. It is based on a novel design that employs earthworms to convert human excreta into compost. There is minimal use of water, and it is a safe and sanitary method of processing human waste.

Explain alternative methods of sewage disposal.

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