Video: Singapore studying feasibility of sixth Water Desalination Plant. (CNA)
Points from the video:
- 1) Plant may be fully underground.
- 2) Study will take about 10 months
- 3) Plant to treat both seawater and fresh water
- 4) Assess technical feasibility and economic viability of design
- 5) Possibly located in Southwest to support industries, and be more energy efficient - currently 2.5 to 3.5 kWh, possibly with 20-30% energy savings.
As at 2022, the 5 desalination plants with a capacity to provide 190 mgd, and 5 NEWater plants providing 170 mgd for a total of 360 mgd. Singapore draws 250 mgd from Johor under the 1962 agreement, and there is the local catchment (reservoir) water, which can make up for any shortfall or emergencies or contingencies. Our current usage is about 430 mgd.
Working backwards, we would draw 250 mgd from Johor because that is the cheapest, least energy intensive, and most environmentally conservative to use, which leaves a "shortfall" of 180 mgd. if each of the 3 taps remaining take 60 mgd each.
Excluding the 250 mgd from Johor, using just the 3 remaining taps, Desalination and NEWater (with 5 plants each) would provide 360 mgd, while we need 430 mgd. The shortfall to be covered by local catchment would be 70 mgd. The sixth plant proposed would reduce that to about 40 mgd (most plants provide about 30 mgd.)
Of course, Singapore would prefer to get water from Johor at a reasonable price, but Johor may have plans for their water resources in the future.
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