Water and rainwater "dual mode"
After the "inevitable" Covid new champions league after the test of virus outbreak, a "dual mode" desalination plant in Singapore to complete the testing and debugging.Allegedly, under the condition of the corresponding Singapore keppel bay east pier desalination plants (KMEDP) is the world's first with seawater or freshwater water treatment at the same time base.
KMEDP began operating at the end of June, and according to the national water authority (PUB) for the construction of the building, ownership and operation (DBOO) agreement.A wholly owned subsidiary of the plant will be made by Keppel proceeds Marina East water run, nissan drinking water up to 137000 cubic meters.
Complicated setup
MCA head of Graeme Dr Pearce to Thames water in London's baker, desalination plants and Tampa bay water desalination plants, for example say, is the concept of "variable salinity seawater desalination.
Despite the precedent, but KMEDP can say is the first can change water for water treatment plants, rather than rely on natural phenomena such as tidal to change water.
"Although the double water system on the surface looks very simple, but its setting is complicated."
In Aquatech online interview, Graeme Dr Pearce said: "although the double water system on the surface looks very simple, but it is a complex device, the consequences can affect energy saving, complex, pump and control device."
It with the total dissolved solids (TDS) in the water, within the range of 40000 mg/L and lagoon water total dissolved solids (TDS) is in the range of 2000 mg/L.
"This means KMEDP has designed two kinds of completely different operation mode."Dr Graeme Pearce added: "ideally, it will have two sets of membrane system, design of changes to apply to water supply.
Energy conservation and environmental protection engineering design
By means of KMEDP adopts double water system: in dry weather processing pumping seawater;While under the rain weather, instead of to deal with the rain, water production, and achieve the effect of lower energy consumption.Keppel Infrastructure company engineers Aecom ellerbe becket said, compared with the typical desalination plants, so more energy efficient.
Engineering design including for water from sea water and reservoir water supply from the shuangliu chamber, by flocculation and dissolved air flotation preprocessing, ultrafiltration, reverse osmosis systems, after the final end of ultraviolet disinfection systems throughout the process.
In addition to water supply switch between seawater and fresh water, KMEDP also implements the other energy optimization function, including direct coupling and permeation separation.For the project with ultrafiltration (UF) membrane technology partners Pentair marina manufacturer, said KMEDP is Singapore's first USES the UF and RO coupled ultrafiltration, reverse osmosis water treatment method of large desalination plant.Save and decrease with the conventional RO reverse osmosis treatment tank and pump configuration, so as to realize the "significant cost, space and energy saving".
A "refined" water treatment plants
KMEDP due to its smooth design, with the surrounding environment and reasonable combination, so green is different from the "traditional water treatment plants and is recognized by the PUB.At the same time, factory from the start of the design into the environmental elements, including rainwater collection pool and rainwater management system, etc.
"Multiple land use", through the set processing facilities under the ground, through viewing gallery view.Keppel Infrastructure company says, it frees up nearly 20000 square meters for community activity open green roof space.PUB, chief executive of Ng Joo Hee, says a new project may be like the Marina Barrage dam, become a landmark building.
Ng Joo Hee said: "have the characteristics of KMEDP desalination plant lets a person long awaited: this is a seat in the center of the city of amphibious desalination plants, is also a beautiful buildings, and the surrounding park perfectly together, and open to the public."
Keppel proceeds On Tiong, CEO of the company, "said Dr Guan" due to reduce the use of human demand, during the outbreak to complete the final lap test and debugging actually brings us some inevitable challenges.And overcome these challenges, deliver the project on schedule and quickly put into operation is fully demonstrated Keppel corporation under the pressure of high strength and execution."
