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Reverse Osmosis System reclaims 86% Wastewater in Singapore

Man working on Jewel

Man working on JewelThe Facility

Singapore, a small island-state with few natural resources, currently imports about half of the country’s potable water supply from neighboring Malaysia and efforts are being made by the Singapore government to reduce dependence on imports. The increased success of recycling and reuse of waste water in Singapore is a key strategy to Singapore’s increased self reliant water supply.

Project Overview

The Jewel plant, one of the largest of its kind in the world today, will treat tertiary treated effluent, which is a combination of sewage and industrial waste, and purify it for reuse by industry. The system feed is supplied by the Jurong Industrial Waste Water System (JIWW). The project is the keystone behind the water portion of the Sembawang Utilities Terminal (SUT). SUT supplies water, steam, electricity, and other utilities to various industrial end users on Jurong Island. The high grade industrial water (HGIW) produced by the system will be sold to industrial end users at a lower price than imported potable water.

Scope of Service

Aquatech designed and built a plant that made 30,000 m³/day of HGIW. This system consisted of the following: Five primary Dual Media Filters’s each of 375 m³/hr and four secondary Dual Media Filters’s each of 500 m³/hr with all of the associated coagulant chemical dosing skids; six Reverse Osmosis trains each of 242 m³/hr feed and 210 m³/hr permeate operating at 86% recovery. Since start-up in January 2000, the Jewel Plant has performed reliably within the design specifications. The high recovery of 86% pioneered by this project is now considered an industry benchmark in tertiary effluent waste water reclamation.

Design Water Analysis

 singaporediagram
Process Flow Diagram
jeweldiagram