# US 2017/0283280 A1 · Method for the desalination of supersaturated hot water > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2017/0283280 A1 - Document ID: US20170283280A1 - Status: Published application - Kind: A1 - Application number: 15/508,144 - Filed: 2015-09-02 - Published: 2017-10-05 - Earliest claimed: 2014-09-02 - Assignees: Degremont - Applicants: Degremont - Inventors: Loic DANIEL - Web page: https://patentgrep.com/patent/US20170283280A1 ## CPC - C02F 1/441: {by reverse osmosis} - B01D 61/025: {Reverse osmosis; Hyperfiltration} - C02F 5/00: Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents (softening using ion-exchange C02F1/42) - C02F 5/08: Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents - B01D 61/04: Feed pretreatment - B01D 2311/04: Specific process operations in the feed stream; Feed pretreatment - B01D 2311/06: Specific process operations in the permeate stream - B01D 2311/268: Water softening - C02F 5/025: {Hot-water softening devices} - C02F 2101/006: {Radioactive compounds} - C02F 2101/20: Heavy metals or heavy metal compounds - C02F 2101/203: {Iron or iron compound} - C02F 2101/206: {Manganese or manganese compounds} - C02F 2101/40: {containing sulfur} - C02F 2103/06: Contaminated groundwater or leachate - C02F 2103/08: Seawater, e.g. for desalination - Y02A 20/131: Reverse-osmosis - C02F: TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE (separation in general B01D; special arrangements on waterborne vessels of installations for treating water, waste water or sewage, e.g. for producing fresh water, B63J; adding materials to water to prevent corrosion C23F; treating radioactively-contaminated liquids G21F9/04; regeneration of reactants for recirculation into processes, see the relevant places for the processes) - B01D: SEPARATION (separating solids from solids by wet methods B03B, B03D; by pneumatic jigs or tables B03B; by other dry methods B07; magnetic or electrostatic separation of solid materials from solid materials or fluids, separation by high-voltage electric fields B03C; centrifuges, vortex apparatus B04; presses per se for squeezing-out liquid from liquid-containing material B30B9/02; treatment of water C02F, e.g. softening by ion-exchange C02F1/42; {arrangements of air intake cleaners in gas turbine plants F02C7/05} ; arrangements or mounting of filters in air-conditioning, air-humidification or ventilation F24F13/28) - Y02A: TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE ## Abstract A method for desalination of hot supersaturated water having a temperature of between 40° C. and 80°, includes contacting the hot water with a reverse osmosis membrane which is resistant to temperatures of between 40 and 80° C. without a prior cooling step. ## Claims ### Claim 1 Method for desalination of hot supersaturated water having a temperature of between 40° C. and 80° C., comprising contacting said hot water with a reverse osmosis membrane which is resistant to temperatures of between 40 and 80° C. without a prior cooling step. ### Claim 2 (depends on 1) Method according to claim 1, further comprising a step of cooling of the desalinated permeate from the reverse osmosis. ### Claim 3 (depends on 1) Method according to claim 1, further comprising, prior to the contacting of the hot water with the reverse osmosis membrane, a step of removing suspended matter or a step of adding a sequestrant, or both. ### Claim 4 (depends on 1) Method according to claim 1, wherein the hot water is pressurized before being contacted with the reverse osmosis membrane. ### Claim 5 (depends on 1) Method according to claim 1, wherein the hot supersaturated water comprises compounds selected from calcium, magnesium, sodium, potassium, carbonates, bicarbonates, chlorides, sulfates or a mixture thereof. ### Claim 6 (depends on 5) Method according to claim 5, wherein the hot supersaturated water comprises compounds selected from calcium, magnesium, sodium, potassium, carbonates, bicarbonates, chlorides, sulfates or a mixture thereof, with a total amount of at least 500 mg/l. ### Claim 7 (depends on 1) Method according to claim 1, wherein the hot supersaturated water further comprises compounds selected from iron, manganese, silica, sulfur or a mixture thereof. ### Claim 8 (depends on 2) Method according to claim 2, wherein the permeate is cooled to a temperature at least less than 45° C. and preferably less than 40° C. ### Claim 9 (depends on 1) Method according to claim 1, wherein the hot supersaturated water comprises radionuclides. ### Claim 10 (depends on 1) Method according to claim 1, wherein the permeate of said hot water is cooled following its osmosis membrane traversal. ### Claim 11 (depends on 2) Method according to claim 2, further comprising, prior to the contacting of the hot water with the reverse osmosis membrane, a step of removing suspended matter or a step of adding a sequestrant, or both. ### Claim 12 (depends on 2) Method according to claim 2, wherein the hot water is pressurized before being contacted with the reverse osmosis membrane. ### Claim 13 (depends on 3) Method according to claim 3, wherein the hot water is pressurized before being contacted with the reverse osmosis membrane. ### Claim 14 (depends on 2) Method according to claim 2, wherein the hot supersaturated water comprises compounds selected from calcium, magnesium, sodium, potassium, carbonates, bicarbonates, chlorides, sulfates or a mixture thereof. ### Claim 15 (depends on 3) Method according to claim 3, wherein the hot supersaturated water comprises compounds selected from calcium, magnesium, sodium, potassium, carbonates, bicarbonates, chlorides, sulfates or a mixture thereof. ### Claim 16 (depends on 4) Method according to claim 4, wherein the hot supersaturated water comprises compounds selected from calcium, magnesium, sodium, potassium, carbonates, bicarbonates, chlorides, sulfates or a mixture thereof. ### Claim 17 (depends on 2) Method according to claim 2, wherein the hot supersaturated water further comprises compounds selected from iron, manganese, silica, sulfur or a mixture thereof. ### Claim 18 (depends on 3) Method according to claim 3, wherein the hot supersaturated water further comprises compounds selected from iron, manganese, silica, sulfur or a mixture thereof. ### Claim 19 (depends on 4) Method according to claim 4, wherein the hot supersaturated water further comprises compounds selected from iron, manganese, silica, sulfur or a mixture thereof. ### Claim 20 (depends on 5) Method according to claim 5, wherein the hot supersaturated water further comprises compounds selected from iron, manganese, silica, sulfur or a mixture thereof.