I.d.e. Technologies Ltd.

Ide Water Technologies Ltd.

Tomer Efrat

Alex Drak

Roi Zaken

Boris Liberman

Herman Weiss

Itamar Hite

A reverse osmosis desalination system for treating feed water, the feed water containing minerals, the system comprising a reverse osmosis unit comprising a first reverse osmosis stage () and a second reverse osmosis stage (), each of the reverse osmosis stages () having a feed water input, a product water outlet and a brine outlet, and a fluidized bed crystallizer (), configured to remove minerals from the water, wherein the fluidized bed crystallizer () receives brine from the first reverse osmosis stage () and passes treated water to the feed water input of the second reverse osmosis stage ().

Reverse osmosis system with fluidized bed crystallizer

A system for cleaning feed water of variable quality, the system comprising an inlet for selectively delivering feed water to one or other of at least two feed chambers, each feed chamber having a delivery pipe for delivering feed water to a reverse osmosis or nanofiltration; a pump to deliver the feed water from one of the chambers through its associated delivery pipe to the reverse osmosis or nanofiltration to create a concentrated feed stream and a product water stream; return pipes for selectively returning the concentrated feed stream to one or other of the at least two feed chambers; a product water outlet for removal of the product water; and means for switching the delivery of the concentrated feed stream between the selectable return pipes upon detection of a predetermined reduction in efficiency within one or another of the feed chambers.

Reverse osmosis or nanofiltration process for cleaning water

A pumping apparatus for a water treatment plant, the pumping apparatus comprising a gas supply, at least one gas turbineconnected to the gas supply, the at least one gas turbine connected to drive at least one primary pumpthrough a reduction gear trainand clutch, a waste heat boilerhaving a feed water input, the waste heat boiler having an exhaust gas inputto receive exhaust gas from the at least one gas turbineand generate steam from the feed water, the waste heat boiler having an steam output, the apparatus further comprising at least one steam turbine, the at least one steam turbine connected to drive at least one secondary pump, the at least one steam turbine being connected to the steam outputof the waste heat boiler, the at least one steam turbinefurther having an exhaust steam output, the apparatus further comprising a condensing apparatusto receive steam from the exhaust steam output and generate a feed water stream at a feed water output, the feed water outlet being connected to the feed water input of the waste heat boiler

Water treatment plant

A system for cleaning feed water of variable quality, the system comprising an inlet for selectively delivering feed water (FW) to one or other of at least two feed chambers (), each feed chamber having a delivery pipe () for delivering feed water to a reverse osmosis or nanofiltration (); a pump () to deliver the feed water from one of the chambers () through its associated delivery pipe () to the reverse osmosis or nanofiltration () to create a concentrated feed stream and a product water stream (PW); return pipes (R,R) for selectively returning the concentrated feed stream to one or other of the at least two feed chambers (); a product water outlet for removal of the product water (PW); and means for switching the delivery of the concentrated feed stream between the selectable return pipes (R,R) upon detection of a predetermined reduction in the efficiency of the RO or NF process within one or other of the feed chambers (). The pressure of the concentrated feed stream is reduced to atmospheric pressure prior to its delivery back to the chamber and the feed stream passes through a desaturation unit ().

A method and system for cleaning a multistage evaporator, the evaporator having a normal operational mode and a cleaning mode and having at least two groups of effects (), each group having one or more effects. In a normal operational mode, input vapor is introduced to a first group of effects (), the first group comprising the hottest effects, and then vapor is delivered from the first group to a second group of effects (), and optionally, from the second group of effects to a third group of effects () and so on depending on the total number of effects. Upon detection of a predetermined level of scale formation in the first group of effects, the evaporator is switched to a cleaning mode wherein the first group of effects () is physically separated from the other groups of effects and the input vapor is re-directed into the second group of effects (). A cleaning agent is introduced into the physically separated first group of effects () until a predetermined level of cleanliness is achieved.

Cleaning a multi-effect evaporator

A water treatment system comprising a mechanical vapour compression apparatus (), the mechanical vapour apparatus having a evaporation/condensation vessel () and a recirculation circuit () whereby recirculated water is pumped from an outlet () of the evaporation/condensation vessel (A) to an inlet (B) of the evaporation/condensation vessel (A), wherein the recirculation circuit () comprises a fluidized bed crystallizer (), and at least part of the recirculated brine is passed through the fluidized bed crystallizer () to remove dissolved minerals therefrom.

Water treatment system using mechanical vapour compression

A thermal desalination system, comprising a multi-effect evaporator comprising a plurality of effects, configured to produce product water and brine and a fluidized bed crystallizer, configured to remove dissolved minerals and/or solids from the water, wherein the fluidized bed crystallizer is disposed between at least two effects of the multi-effect evaporator.

Thermal desalination system with multi-effect evaporator and fluidized bed crystallizer

A method of cleaning an evaporator that includes at least one heat transfer element for the evaporation of water, comprising forming a sacrificial layer of a first material on a surface of the heat transfer element (); evaporating water that includes a second material to deposit the second material on top of the sacrificial layer (); and cleaning the evaporator by removing both the sacrificial layer formed on the heat transfer element and the second layer formed on top of the sacrificial layer; wherein the first material is more easily removed from the heat transfer element than the second material ().

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Kadima, Israel

Tomer Efrat