Water Purification Model: Using Sand, Gravel, And Grit?Find Out How!

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India is facing a scarcity of water in several areas being drought-stricken. Since rivers and dams are running out of potable water, many places are relying on underground reserves of drinking water.

Groundwater refers to all subsurface water; these are geologic formations that acquire water through seepage of rainwater or a nearby rivulet. This water can consist of algae, zooplankton, suspended dirt, particles of "floc" formed by coagulation pre-treatment, etc.

The process of natural groundwater purification:

Step 1: Source water

The water is stored in a tank from where it is sent for treatment. This tanker needs to be elevated at a height. This should be in order to ensure the water has sufficient flow to accelerate the cleaning process.

Step 2: Gravel

The water goes to the Gravel that helps to clean the water from impurities. Here the water seeps through the finer grains of gravel thus leaving behind any large particles of dirt.

Step 3: Sand

The second layer filter is sand. Sand has finer particles that filter clean water thoroughly. This layer removes the impurities like dust.

Step 4: Charcoal

Each particle, or granule, of carbon provides a large surface area, or pore structure, allowing contaminants the maximum possible exposure to the active sites within the filter media. This allows the charcoal to purify water in the 3rd stage.

Advantages Of Water Purification:

This process helps to purify water with organic materials that do not have any reactions due to chemicals. The water purification simply happens without electricity as the water passes through different stages and ends up getting purified.

The groundwater is treated free of algae and dirt, made odor-free and made potable for consumption

Water-Filteration Research Projects in India:

Reduction of Contamination from Water Using Slow Sand Filter

https://www.irjet.net/archives/V5/i5/IRJET-V5I515.pdf

DEVELOPMENT OF LOW-COST WATER PURIFICATION TECHNIQUE

http://ethesis.nitrkl.ac.in/4843/1/109CE0059.pdf

Water Quality Improvement Using Different Low-Cost Filter Materials

http://ethesis.nitrkl.ac.in/5697/1/E-76.pdf

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