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The desalinated water quality from the low temperature distillation process is almost demineralized water with a remaining salinity of 10 ppm. Residual contaminants result from demister losses and depend on the treated feedwater as well as vapor velocities between evaporator and condenser.
A solvent whose solubility varies with temperature is added to saltwater. At room temperature the solvent draws water molecules away from the salt. The water-laden solvent is then heated, causing the solvent to release the now salt-free water. [164] It can desalinate extremely salty brine up to seven times as salty as the ocean.
As it flows back through the stages the water is now called brine, to distinguish it from the inlet water. In each stage, as the brine enters, its temperature is above the boiling point at the pressure of the stage, and a small fraction of the brine water boils ("flashes") to steam thereby reducing the temperature until an equilibrium is reached.
The desalinated water EMWD paid for would still get mixed into South Coast’s system, while imported water that would have gone to the South Coast would instead go to EMWD’s customers. [4] The subsurface intake (slant) wells at Doheny State Beach will be fully buried beneath the ocean floor to protect marine life. [5]
A potential difference is applied between both channels of flowing carbon slurries, the so-called flow electrodes, and water is desalinated. Since the carbon slurries flow, the electrodes do not saturate and therefore this cell design can be used for the desalination of water with high salt concentrations as well (e.g. sea water, with salt ...
The median cost of producing desalinated water is "in the neighborhood of $2,000 an acre-foot," he said. Michelle Peters, technical and compliance manager for Poseidon Water, walks in the reverse ...
The compression is mechanically powered by something such as a compression turbine. As vapor is generated, it is passed over to a heat exchanging condenser which returns the vapor to water. The resulting fresh water is moved to storage while the heat removed during condensation is transmitted to the remaining feedstock.
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