| System Instrumentation |
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| Conductivity: |
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Digital product water quality monitor |
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| Pressure Gauges: |
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Feed water (plant entrance) glycerin filled |
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Feed water (media filter outlet) glycerin filled
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High pressure pump (entrance) glycerin filled |
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RO pressure (entrance) glycerin filled |
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RO pressure (outlet) glycerin filled |
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| Flow Meter: |
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Product discharge, digital |
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Brine recovery, digital (Recovery systems) |
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Brine discharge, digital (Recovery systems) |
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| Hour Meter: |
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Total running time |
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| Automatic Shut Off Functions |
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| High product salinity |
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| High RO pressure |
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| Low feed water pressure |
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| Low RO pressure |
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| Low brine recovery (Recovery systems) |
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| Low brine discharge (Recovery systems) |
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| High pump motor temperature |
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| Pre Filtration |
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| Back-washable pressurized Micro Z media filtration system |
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| Cartridge filtration, 5micron |
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| Chemical treatment and cleaning station |
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| Chemical injection system |
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| Membrane cleaning in place skid with polyethylene tank |
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| and a magnetic driven centrifugal pump |
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How the Energy Recovery System works
The pressurized brine, normally dumped in conventional desalination systems, is used to pressurize part of the incoming seawater.
The Desalination System’s energy recovery device facilitates pressure transfer from the high pressure brine reject stream to the low pressure seawater feed stream by putting the streams in direct, momentary contact.
The transfer occurs in the ducts of a rotor. The rotor is fit into a ceramic sleeve between two ceramic endcovers with precise clearances that, when filled with high pressure water, create an almost frictionless hydrodynamic bearing.
At any given instant, half of the rotor ducts are exposed to the high pressure stream and half the ducts are exposed to the low pressure stream. As the rotor turns, the ducts pass a sealing area that separates high and low pressure. Thus, the ducts that contain high pressure are separated from the adjacent ducts containing low pressure by the seal formed with the rotor’s ribs and the ceramic endcovers.
Seawater supplied by the supply pump flows into a duct on one side at low pressure. This flow expels brine from the duct on the other side. After the rotor turns past a sealing area, high pressure brine flows into the right side of the duct, pressurizing the seawater. Pressurized seawater then flows out to the booster pump. This pressure exchange process is repeated for each duct with every rotation of the rotor such that the ducts are continuously filling and discharging.
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