Title:
NOVEL FUNCTIONAL NANOFIBER BACK-WASHABLE PRECISE FILTER CARTRIDGE FILTERING APPARATUS AND METHOD
Document Type and Number:
WIPO Patent Application WO/2022/242051
Kind Code:
A1
Abstract:
The present invention relates to the technical field of nanofiltration pretreatment. Specifically disclosed are a novel functional nanofiber back-washable precise filter cartridge filtering apparatus and method. The apparatus comprises an intermediate water tank, an intermediate lifting pump, a functional nanofiber precise filtering apparatus, an air compressor, a bactericide, an alkali liquid, a backwashing pump, and produced water. The present invention can effectively alleviate the problems that a traditional precise safety filter is low in process operation efficiency and poor in treatment effect, and needs to be frequently replaced; the high permeability, good anti-pollution performance, and efficient antibacterial performance of a functional nanofiber membrane can effectively ensure that the relevant parameters of micro-organic polluted surface water pretreated by the functional nanofiber membrane can stably satisfy the water inlet requirement of a nanofiltration membrane after being subjected to the conventional treatment processes of a water plant, i.e., pre-sedimentation and flocculation/sand filtration and water output; in addition, compared with a traditional precise safety filter cartridge, a functional nanofiber back-washable filter cartridge apparatus has the advantages of being higher in filtering precision, lower in operation cost, and longer in service life.
Inventors:
ZHANG PINGYUN (CN)
ZHANG DONG (CN)
JIANG LEI (CN)
GU YUHONG (CN)
LIU HUIJIE (CN)
BIE HONGYU (CN)
HUANG LING (CN)
ZHANG DONG (CN)
JIANG LEI (CN)
GU YUHONG (CN)
LIU HUIJIE (CN)
BIE HONGYU (CN)
HUANG LING (CN)
Application Number:
PCT/CN2021/128902
Publication Date:
November 24, 2022
Filing Date:
November 05, 2021
Export Citation:
Assignee:
SHANGHAI NATIONAL ENGINEERING RES CENTER OF URBAN WATER RESOURCES CO LTD (CN)
International Classes:
B01D29/66; B01D65/06; B01D71/34; B01D71/36
Foreign References:
| CN113144715A | 2021-07-23 | |||
| CN111908663A | 2020-11-10 | |||
| CN111362446A | 2020-07-03 | |||
| CN110760994A | 2020-02-07 | |||
| CN103301753A | 2013-09-18 | |||
| CN111422951A | 2020-07-17 | |||
| CN102274695A | 2011-12-14 | |||
| US20030155308A1 | 2003-08-21 |
Attorney, Agent or Firm:
SHANGHAI WISE INTELLECTUAL PROPERTY FIRM (CN)
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