US 11,851,354 B2
Process for the treatment of waste water
Kaushik Basak, Singapore (SG); Arian Van Mourik, Amsterdam (NL); Nishith Verma, Kanpur U.P. (IN); and Ashish Yadav, Kanpur U.P. (IN)
Assigned to SHELL USA, INC., Houston, TX (US)
Appl. No. 16/765,712
Filed by SHELL OIL COMPANY, Houston, TX (US)
PCT Filed Nov. 20, 2018, PCT No. PCT/EP2018/081851
§ 371(c)(1), (2) Date May 20, 2020,
PCT Pub. No. WO2019/101710, PCT Pub. Date May 31, 2019.
Claims priority of application No. 201741042021 (IN), filed on Nov. 23, 2017.
Prior Publication US 2020/0308030 A1, Oct. 1, 2020
Int. Cl. C02F 1/72 (2023.01); C02F 103/36 (2006.01); B01J 21/18 (2006.01); B01J 35/00 (2006.01); C02F 1/74 (2023.01)
CPC C02F 1/725 (2013.01) [B01J 21/18 (2013.01); B01J 35/0013 (2013.01); C02F 1/727 (2013.01); C02F 1/74 (2013.01); C02F 2103/36 (2013.01); C02F 2301/046 (2013.01); C02F 2305/08 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A process for treating wastewater comprising subjecting the wastewater to a catalytic wet oxidation treatment comprising:
feeding a stream comprising the wastewater to a reactor, wherein the wastewater is from an industrial process for producing propylene oxide containing hydrocarbons and salts;
subjecting the stream comprising the wastewater to an oxidation treatment in the presence of oxygen and a catalyst resulting in a treated stream;
sending the treated stream to a separator wherein the treated stream is separated into a gas stream and a liquid stream; and
recycling part of the liquid stream to the reactor.