The raw water supplied by the state’s water company (PDAM) to Indonesia Tourism Development Corporation (ITDC, formally BTDC), hotel and resort area, in Nusa Dua has been deemed insufficient for irrigation, garden ponds and swimming pool purposes.
The ITDC management plans to build a seawater processing facility—using the seawater reverse osmosis (SWRO) technology—to make clean water. The decision was driven by the fact that ITDC requires 8000 m3 of water every day, while PDAM can only contribute around 40%.
“We’re currently doing a feasibility study,” said Wayan Karioka, ITDC’s Managing Director, on Wednesday (19/04), as quoted by Nusa Bali. “We’re still trying to figure out the cost and how much volume we can process. Due to the lack of water supply by PDAM many hotels here have already built their own SWRO.”
Karioka added that the project is only meant to cover the deficit, and the rest will still be supplied by PDAM. In terms of cost to build the SWRO, he revealed that the range is between IDR25billion to 30billion.
“The target is to complete the project by late this year or early next year. We also want to integrate the hotel-owned SWROs, but as of now it’s still being studied by our R&D division. We need to know for sure about the volume, feasibility, and its current condition.”
Besides developing SWRO, ITDC also has plans to install a wastewater treatment facility (IPAL) in Lagoon, Benoa. The facility is expected to produce quality water for irrigation purposes, which is why they’re going to add more bioreactor membranes, ozone pumps, as well as more air circulation and useful bacteria.
“We want to be able to produce an environmentally-friendly clean water from the wastewater facility,” Karioka said. “The water will be clear and odorless; we want to improve the water quality for irrigation. But we can’t drink it because the water will only be level 3 quality. The target is early July for the facility to be fully operational. We’ve had no problems so far; the required supply for irrigation is around 6000meter cubic per day, and that’s in line with the water processing volume produced in Lagoon.”
Lagoon’s IPAL repair had previously been mentioned by Ngurah Wirawan, Operational Director. The IPAL project’s contract started on December 9, 2016, with construction commencing from December 23, 2016 to June 21, 2017. The project will cost IDR12,1 billion.