# US 8,771,522 B2 · Method and apparatus for treating organic matter-containing water > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,771,522 B2 - Document ID: US8771522B2 - Status: Granted - Kind: B2 - Application number: 12/737,554 - Filed: 2009-07-27 - Published: 2011-07-28 - Granted: 2014-07-08 - Earliest claimed: 2008-07-28 - Assignees: Kurita Water Industries Ltd. - Applicants: Hiroto Tokoshima - Inventors: Hiroto Tokoshima - Web page: https://patentgrep.com/patent/US8771522B2 ## CPC - C02F 1/725: {by catalytic oxidation} - B01D 19/0031: {by filtration} - B01J 35/45: Nanoparticles - B01D 2311/13: Use of sweep gas - B01J 23/42: Platinum - B01J 35/23: in a colloidal state - B01J 37/16: Reducing - C02F 1/20: by degassing, i.e. liberation of dissolved gases (degasification of liquids in general B01D19/00; arrangement of degassing apparatus in boiler feed supply F22D) - C02F 1/70: by reduction {(C02F1/4676 takes precedence)} - C02F 1/727: {using pure oxygen or oxygen rich gas} - C02F 2001/422: {using anionic exchangers} - C02F 2001/425: {using cation exchangers} - C02F 2101/30: Organic compounds - C02F 2103/04: for obtaining ultra-pure water - C02F 2305/08: Nanoparticles or nanotubes - 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) - B01J: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS ## Abstract Raw water is made to pass through a raw water supply pipe by opening on-off valves, and by closing on-off valves. Oxygen is supplied to the raw water in the raw water supply pipe by opening an on-off valve of an oxygen supply pipe. The resulting raw water containing organic matter and oxygen passes through the raw water supply pipe and enters a catalyst-packed column, thereby contacting a platinum-group metal catalyst onto which hydrogen is adsorbed. This causes the organic matter in the raw water to contact the platinum-group metal catalyst under the presence of dissolved oxygen and hydrogen which is adsorbed onto the metal catalyst. Accordingly, the organic matter in the water to be treated can be easily removed at high efficiency and with low energy consumption. ## Claims ### Claim 1 A method for treating organic-matter-containing water, comprising: supplying water containing organic matter and dissolved oxygen to a catalyst-packed column comprising a platinum-group metal catalyst having hydrogen adsorbed thereon; contacting the water with the platinum-group metal catalyst with the hydrogen adsorbed thereon, thereby removing the organic matter; shutting off the supplying of the water to the catalyst packed column; and supplying the hydrogen to the catalyst-packed column after the shutting off the supplying of the water, wherein the supplying of the hydrogen to the catalyst-packed column and the contacting of the water with the platinum-group metal catalyst are performed alternately. ### Claim 2 (depends on 1) The method for treating organic-matter-containing water according to claim 1, further comprising using a plurality of reaction containers that contain the platinum-group metal catalyst, wherein when one of the reaction containers is used for the platinum-group metal catalyst to adsorb the hydrogen thereon, another one of the reaction containers is used for the removing of the organic matter. ### Claim 3 (depends on 1) The method for treating organic-matter-containing water according to claim 1, wherein the platinum-group metal catalyst includes microparticles of a platinum-group metal. ### Claim 4 (depends on 3) The method for treating organic-matter-containing water according to claim 3, wherein the microparticles of the platinum-group metal catalyst are supported on a supporting member. ### Claim 5 (depends on 1) The method for treating organic-matter-containing water according to claim 1, wherein a concentration of the dissolved oxygen in the water is in a range between 1 ppb and 100 ppb. ### Claim 6 (depends on 1) The method for treating organic-matter-containing water according to claim 1, further comprising contacting the water with at least one of an anion exchange resin and a cation exchange resin after the contacting of the water with the platinum-group metal catalyst. ### Claim 7 (depends on 6) The method for treating organic-matter-containing water according to claim 6, further comprising deaerating the water after passing through the catalyst-packed column, thereby obtaining deaerated water, and contacting the deaerated water with at least one of the anion exchange resin and the cation exchange resin. ### Claim 8 (depends on 1) The method for treating organic-matter-containing water according to claim 1, wherein the water to be treated is water to be treated for production of ultrapure water. ### Claim 9 An apparatus for treating organic-matter-containing water, comprising: a plurality of reaction containers each containing a platinum-group metal catalyst having hydrogen adsorbed thereon; a water-supplying pipe configured to supply water containing organic matter and dissolved oxygen to the reaction containers so that the water contacts with the platinum-group metal catalyst; a hydrogen-supplying pipe configured to supply the hydrogen to the reaction containers; a switch configured to switch between supply of the water to the reaction containers from the water-supplying pipe and supply of the hydrogen to the reaction containers from the hydrogen-supplying pipe, and shut off the supply of the water to the plurality of reaction containers, wherein the switch switches sequentially between the reaction container in which adsorbing of the hydrogen on the platinum-group metal catalyst is carried out by the supply of the hydrogen, and another reaction container other than the reaction container in which the adsorbing of the hydrogen is carried out after the supply of the hydrogen to the reaction container, said water containing organic matter being supplied to the reaction container and another reaction container alternately. ### Claim 10 (depends on 9) The apparatus for treating organic-matter-containing water according to claim 9, further comprising an ion exchange unit having at least one of an anion exchange resin and a cation exchange resin onto which treated water ejected from the reaction container is fed. ### Claim 11 (depends on 10) The apparatus for treating organic-matter-containing water according to claim 10, further comprising a deaeration module into which the treated water ejected from the reaction container is fed, wherein deaerated water from the deaeration module is fed into the ion exchange unit. ### Claim 12 (depends on 1) The method for treating organic-matter-containing water according to claim 1, further comprising supplying oxygen to the water before the supplying of the water to the catalyst-packed column when a concentration of the dissolved oxygen in the water does not reach a predetermined value. ### Claim 13 (depends on 12) The method for treating organic-matter-containing water according to claim 12, wherein the predetermined value is 1 ppb. ### Claim 14 (depends on 12) The method for treating organic-matter-containing water according to claim 12, further comprising calculating a difference between a concentration of the dissolved oxygen in the water being supplied to the catalyst-packed column and a concentration of the dissolved oxygen in the water being discharged from the catalyst-packed column, thereby obtaining the predetermined value. ### Claim 15 (depends on 9) The apparatus for treating organic-matter-containing water according to claim 9, further comprising a plurality of connecting pipes connecting the water-supplying pipe and the hydrogen-supplying pipe with the plurality of reaction containers, wherein the switch comprises a plurality of valves configured to open and close the plurality of connecting pipes. ### Claim 16 (depends on 9) The apparatus for treating organic-matter-containing water according to claim 9, further comprising an oxygen-supplying pipe configured to supply oxygen to the water before the supply of the water to the catalyst-packed column. ### Claim 17 (depends on 16) The apparatus for treating organic-matter-containing water according to claim 16, wherein the oxygen is supplied to the water when the concentration of the dissolved oxygen in the water does not reach a predetermined value. ### Claim 18 (depends on 17) The apparatus for treating organic-matter-containing water according to claim 17, wherein the predetermined value is 1 ppb.