	US 11,840,463 B2
	Device and method for advanced water treatment
Feiyue Qian, Jiangsu (CN); Shiqian Gao, Jiangsu (CN); and Junxia Wang, Jiangsu (CN)
Assigned to SUZHOU UNIVERSITY OF SCIENCE AND TECHNOLOGY, Jiangsu (CN)
Appl. No. 17/041,421
Filed by SUZHOU UNIVERSITY OF SCIENCE AND TECHNOLOGY, Jiangsu (CN)
PCT Filed Aug. 1, 2019, PCT No. PCT/CN2019/098806 § 371(c)(1), (2) Date Sep. 24, 2020, PCT Pub. No. WO2020/052361, PCT Pub. Date Mar. 19, 2020.
Claims priority of application No. 201811057301.2 (CN), filed on Sep. 11, 2018; and application No. 201811057303.1 (CN), filed on Sep. 11, 2018.
Prior Publication US 2021/0039968 A1, Feb. 11, 2021
Int. Cl. C02F 1/44 (2023.01); C02F 101/20 (2006.01); C02F 101/30 (2006.01)

CPC C02F 1/441 (2013.01) [C02F 1/442 (2013.01); C02F 2101/20 (2013.01); C02F 2101/30 (2013.01); C02F 2209/06 (2013.01); C02F 2303/16 (2013.01)]

9 Claims

1. An advanced water treatment device, comprising:

a plate-and-frame membrane module having a water inlet pipe and a water outlet pipe, the late-and-frame membrane module comprising:

a thrust plate disposed at a first end of the plate-and-frame membrane module;

a pressing plate disposed at a second end of the plate-and-frame membrane module, the second end opposing the first end;

a front partition plate directly adjacent to the thrust plate, located between the first end and the second end;

a rear partition plate directly adjacent to the pressing plate, located between the first end and the second end;

a plurality of filter plates located between the front partition plate and the rear partition plate;

a plurality of middle partition plates, which are different than the plurality of filter plates, located between the front partition plate and the rear partition plate;

wherein, between the front partition plate and the rear partition plate, the plurality of middle partition plates are disposed between two adjacent filter plates so that each filter plate is directly adjacent to a middle partition plate;

wherein a flow guide screen plate and an orifice plate are disposed between each filter plate and middle partition plate arranged between the front partition plate and the rear partition plate;

wherein the water outlet pipe extends through an upper portion of the front partition plate, an upper portion of the plurality of filter plates, an upper portion of the plurality of middle partition plates, and an upper portion of the rear partition plate;

wherein the water inlet pipe extends through a bottom portion of the front partition plate, a bottom portion of the plurality of filter plates, a bottom portion of the plurality of middle partition plates, and a bottom portion of the rear partition plate;

a raw water delivery system communicating with the water inlet pipe of the plate-and-frame membrane module

a clear water reservoir communicating with the water outlet pipe of the plate-and-frame membrane module; and

an oxidant dosing system communicating with the water inlet pipe of the plate-and-frame membrane module or the raw water delivery system;

wherein the plate-and-frame membrane module further comprises one or more carbon nanomaterial composite membranes, the one or more carbon nanomaterial composite membranes comprise carbon nanomaterial layers and base membrane layers supporting the carbon nanomaterial layers which are sequentially disposed between the water inlet pipe and the water outlet pipe, and raw materials of the carbon nanomaterial layers comprise mono-layer reduced graphene oxide and multiwalled carbon nanotubes, a mass ratio of the reduced graphene oxide to the multiwalled carbon nanotubes in the carbon nanomaterial layer is (2-4):1;

wherein a loading amount of the carbon nanomaterial layers on surfaces of the base membrane layers in each of the one or more carbon nanomaterial composite membranes is 8-32 g/m², the loading amount being a mass of the carbon nanomaterial layer supported on a surface of a base membrane layer per unit area;

wherein the raw water delivery system is used to store raw water to be treated, in the raw water to be treated, a concentration of organic micro-pollutants is below 0.5 mg/L, a total organic carbon concentration is less than 1 mg/L, there is no suspended matter, and pH is 6-9;

wherein the oxidant dosing system is used to store oxidant;

wherein a mixed liquid of the raw water to be treated and the oxidant zigzags in a microlayer structure of the one or more carbon nanomaterial composite membranes, and at the same time, a catalytic oxidation and a separation and retainment happen, thus the organic micro-pollutants in the raw water to be treated are effectively removed.