Reverse Osmosis Process

 bali_pecatuBali Pecatu Graha

Located in the resort island of Bali, this 300 hectare luxury estate, complete with a 36-hole Golf course, requires a freshwater supply of 3,000 m3/day for it’s Convention Centre, Hotels, Luxury apartments and watering of the Golf Course.

The only reliable source of water is seawater. Using a Beach Well Intake, after passing through a Pretreatment facility, seawater is processed in a Reverse Osmosis Desalination Plant (GE SWRO) with a capacity of 2 x 1,500 m3/day. The TDS (Total Dissolved Solids) of the product water is < 200 ppm.


Pantai Mutiara

This complex of luxury apartments in north Jakarta utilizes water from a nearby lake which is the collection point of a number of small rivers. Besides having a high organic content, the TDS (Total Dissolved Solids) in the water is between 2,000 – 4,000 ppm.

Envitech’s Water Treatment system begins with a physico-chemical process (coagulation, flocculation, clarification) followed by removal of organic material using Ultrafiltration membranes. In order to bring down the TDS to a level suitable for drinking and domestic use, the water is then passed through a Brackish Water Reverse Osmosis system (GE BWRO). The final TDS of the water is < 400 ppm and is suitable for domestic consumption.