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Last Updated: December 1, 2022

 
At Amrita we have various methods to ensure sustainable water extraction and their constant monitoring. Some of them are as provided below:

  1. Aquifer recharge with rainwater harvesting:
    1. We have extensive rainwater harvesting facilities with capacity of around 20 million liters with more than 6 0 million liters of water harvested in the last year. 
    2. The rain water catchment over the hostel buildings is carried by downpipes to the aquifers leading to bore wells located in the vicinity.
  2. Overhead reservoir management: We have provided water meter facilities for each of the bore wells to monitor water usage.
      1. Overhead reservoir management:
      2. Water tanks have been automated to prevent overflow with 24X7 monitoring of water levels and pump On/OFF
      3. Water tanks have been automated to prevent overflow with 24X7 monitoring of water levels and pump On/OFF
  4. Optimized distribution:
    1. We have proximity sensor based taps at our wash areas to prevent unnecessary water loss
    2. We ensure water pressure is kept optimal in pipelines  in order to reduce water loss using pressure reducing valves as mandated by IS 9739 (1981)
  5. Re-usage of water from STP:
    1. Our STPs have been automated and monitored continuously using remote sensing technologies, which resulted in increased efficiency of STPs.
    2. Around 85% of fresh water is recycled in 3 steps.
    3. All hostels’ flush tanks are connected with recycled water.
    4. We use modern dual syphon flush tanks at toilets for judicious water usage
  6. Garden is maintained only with recycled water.
  7. We use water from different sources such as water authority pipelines, borewells, rivers, lakes etc. so as to reduce dependence on one particular source for water.
  8. We have provided water meter facilities for each of the bore wells to monitor water usage.
  9. IoT enabled water distribution projects implemented at off-campus satellite centers helped reduce water consumption by 50%  in villages including Gudipavacheru in  Andhra Pradesh, Guptapada in Orissa, Ransai near Mumbai in Maharashtra, Harirampura in Orrissa, Komalikkudi in Kerala.

Rain Water Harvesting at Amrita

Rainwater harvesting conserves water as a valuable source and stops it from running off wastefully as sewerage water. It provides water during the dry season. It also recharges the aquifers or reservoirs of water below the surface of the earth, thus raising the level of underground water table. Water is conserved by installing different types of rainwater harvesting pits and specially designed pipes & fittings.

Coimbatore Bengaluru Mysuru Amritapuri Kochi
Coimbatore

Rain Water Harvesting at Coimbatore campus

  1. The rainwater from the roads/pavements is led through the roadside drains running near the buildings and recharges the ground through recharge pits constructed near non- yielding/ abandoned bore wells.
  2. The terrace water from buildings is collected in sumps, tanks, pits, etc. and are used for washing and cleaning purposes after suitable pre-treatment. It can be recycled again and can be used for gardening and toilet flushing.
  3. The treatment system consists of sand, gravel, and boulders. This will reduce the drawl of groundwater especially on rainy days

Amrita Vishwa Vidyapeetham have rainwater harvesting in all the campuses, rain water is collected and redirected to a deep pit. The accumulated water is used for longer-term storage, and for reuse on-site.

Table 1 The location of rainwater harvesting structure in includes
Sl.No. Location
1. Vyasamaharshi Bhavanam Connected to sump with pumping arrangements.
2. Nachiketha Bhavanam Connected to sump with pumping arrangements.
3. Yagnavalkia Bhavanam (Half part) Connected to sump with pumping arrangements.
4. YB Annex Connected to sump with pumping arrangements.
5. Aerospace Lab & Mig shed Connected to sump with pumping arrangements
6. Civil Lab Connected to sump with pumping arrangements.
7. Auditorium Geo membrane tank with pumping arrangements.
8. ASB Building Connected to sump with pumping arrangements
9. Academic block 3 Geo membrane tank with pumping arrangements
10. Academic Block 2 Connected to sump with pumping arrangements.
11. Library (half part) Connected to sump with pumping arrangements.
12. Gouthama Bhavanam (half part) Connected to sump with pumping arrangements.
13. M.Tech block Connected to Pit.
14. 1st year mess hall (near YB) Connected to sump with pumping arrangements.
15. Staff quarters (park side) Connected to sump with pumping arrangements.

Pond at Amrita Vishwa Vidhyapeetham, Coimbatore campus
Bengaluru

Rain Water Harvesting at Bengaluru campus

Rainwater harvesting is the collection and storage of rainwater for reuse, rather than allowing it to runoff and get wasted. These stored waters are used for various purposes like groundwater recharge, gardening, flushing etc. We have :

  • Harvesting of Surface Runoff rainwater
  • Harvesting Rooftop Rainwater

Recharge

  • Groundwater aquifers are recharged by various kinds of structures to ensure percolation of rainwater in the ground instead of draining away from the surface.
  • Recharge pits: We have about 39 recharge pits all around the campus. Pit dimension: Diameter 1 m and Depth=3 m. (Ref diagram PHE-01 and 02)
  • Recharging of bore wells near Girls Hostel and Boys Hostels (A, B and C Blocks) from Roof top Rainwater.
  • Roof top rain water from Academic Blocks is also used for recharging pits.
  • Roof top rain water from Guest House and Staff Quarters is used to recharge pits which are near them.
  • Runoff rain water is also used to recharge pits near west side of the college campus and near Amrita furniture workshop.

Storage Tanks

  • Rainwater collected from the roof of the Boys’ Hostel Mathura Block building is diverted to two storage tanks having a capacity of 40 KL and 90 KL.
  • Another storage tank behind STP unit has a capacity of 40 KL
Mysuru

Rain Water Harvesting at Mysuru campus

Rainwater harvesting at Amrita Vishwa Vidhyapeetham, Mysuru Campus
Amritapuri

Rain Water Harvesting at Amritapuri campus

At Amritapuri campus, four rainwater harvesting tanks located at different locations as mentioned below. The tank capacity along with the tank size are also attached

  1. At Girls Hostel near mess hall we have a tank of capacity 190108 Litres, Size in meters (9.84 Length x 6.44 breadth x 3 Height).
  2. At Biotech Campus premises – Rear side of biotech main building – We have a tank of capacity – 288000 Litres, Size in meters (18 Length x 8 Breadth x 2 Height)
  3. At Engineering college campus premises – We have a tank of capacity 988000 Litres,Size in meters (38 Length x 13 Breadth x 2 Height)
  4. At Boys Hostel near STP – We have a tank of capacity 429660 Litres,Size in meters (21 Length x 13.64 breadth x 1.5 Height)
Kochi

Rain Water Harvesting at Kochi campus

In Kochi campus has a system in place which can go a long way in mitigating the depleting groundwater levels and fluctuating climate conditions. This was of particular significance during the recent monsoons that wreaked havoc in the state. It helped in curtailing flooding of the campus to a certain extent. The rain water is harvested from the rooftops of the buildings on campus. The flow are of the main hospital building is 17000 sqm. The downpipes carry to a common pipe which is then diverted by a single pipe to the two ponds having a capacity of 65 lakh litre capacity each situated on the Island. The storm water that falls on the paved and unpaved grounds is collected into rain pits placed all around. There are 42 rain pits of varying dimensions covered by metal bars. These directly pass deep into the underground facilitating ground water recharge directly.

Rain Water Harvesting -Roof Top, Kochi Campus

Pipes carry water to Ponds, Kochi Campus
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