Discribe the step involved in getting clarified water from wastewater?
Answers
Answer:
The steps involved in getting clarified water from wastewater are as follows:
1. Wastewater is passed through bar screens to remove large objects like rags, sticks, cans, plastic, packets, and napkins.
2. Water then goes to a grit and sand removal tank where sand grit and pebbles settle down.
3. The water is placed in a large tank where solid impurities, like faeces, settle down and are removed with a scraper which is called sludge. Floatable solids like oils and grease are removed with a skimmer.
Water, thus form after passing from the above process is called clarified water.
Answer:
The steps involved in getting clarified water from wastewater are as follows:
(i)Use an aerator to bubble air through the wastewater. A mechanical stirrer or a mixer can also be used in place of the aerator. This helps in reducing bad odour of the wastewater.
(ii)Then, the water is filtered through the layers of sand, fine gravel, and medium gravel. Filtration makes the wastewater clean from various types of pollutants. The water is filtered continuously until it becomes clear.
(iii)Then any disinfectant such as chlorine tablet is added to the filtrate and stirred to obtain completely clear water.