ITC Grand Maratha

One  of the prominent  Five star hotels in Mumbai,  the hotel had setup a Sewage Treatment Plant (STP) of around 600 KL/day capacity to treat the waste water generated from public areas, guest toilets and  kitchen.
Concerns:

  • STP of around 600 KL / day capacity to treat the waste water
  • The STP was commissioned but could not achieve the desired standards
  • The smell problem was severe and was traveling to lobby and became a nuisance and a prestige issue for ITC.
  • The water cost of the hotel was at  its peak in the absence of good quality water available from the STP and limited supply from the BMC. Thus the hotel was forced to go for tanker water, costing around Rs. 25-30 per KL.
  • The hotel was contemplating to discard and go for a new plant at one time

Water Balance and Costs (Previously)
Average water requirement : 500 – 700 KL / day
BMC source (@ Rs. 60 /KL) : 200 KL / day
Tanker Water (@Rs. 25 /KL) : 200 – 400 KL /day
Water Costs: Rs. 20,000 / day = Rs. 6.00 – 7.00 lacs /month & 70-80 lacs/annum
What we did:

  • System Evaluation of the plant design was carried out.
  • WAPP offered to give a technical backup for the design up gradation of the STP as the design had many shortcomings.
  • Also took the challenge of manning  the STP operation on 24 hrs basis to assure the desired results are achieved consistently without any conflicts.

Achievements:

  • ITC hotel's Grand Maratha hotel has achieved the lowest water cost among all hotels in Mumbai.
  • At present they are  achieving zero discharge.
  • The treated water had outlet parameters like BOD <20.
  • Treated water was smell free
  • Since then the hotel has started using the treated water for horticulture, cooling tower makeup and in public areas.
  • Increased consistency of the plant and the confidence on WAPP’s performance & commitment, the Hotel decided to use the water for FLUSHING on their own without any specific commitment from WAPP. They were successful which created a benchmark in itself.
  • Monthly water bills have reduced drastically as their all secondary water requirements are met by the present plant