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Title:
RESIN FOR REMOVING PHOSPHORUS FROM WATER BODY, AND PREPARATION METHOD THEREFOR AND APPLICATION THEREOF
Document Type and Number:
WIPO Patent Application WO/2022/135494
Kind Code:
A1
Abstract:
A resin for removing phosphorus from water body, and a preparation method therefor and an application thereof. The particle size of the resin is 0.5-0.8 mm; the resin has a porous structure, the specific surface area is 8-25 m2/g, and the pore size distribution is 3-15 nm; the wet apparent density is 0.68-0.74 g/cm3; the wet true density is 1.12-1.18 g/cm3; and the water content of the resin is 43-57% in percentage by weight. The resin is loaded with a functional group having a lanthanum-oxygen bond, so that the resin can selectively adsorb phosphate radicals in the water body. The resin can selectively remove phosphorus in the water body by using a mode of loading lanthanum on weak acid cation resin and utilizing high selectivity of the lanthanum-oxygen bond to phosphate radicals, is easy to resolve and low in synthesis cost, and can be repeatedly used. Phosphorus in eutrophicated water and waste water can be effectively removed, the content of phosphate radicals in the water body can be controlled within 20 ppm, the phosphorus removal cost of the water body is reduced, and the resin has great advantages compared with conventional disposable phosphorus adsorbents.

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Inventors:
LIU HENG (CN)
GAO WENJIN (CN)
LI SUIDANG (CN)
LIU QIONG (CN)
KOU XIAOKANG (CN)
Application Number:
PCT/CN2021/140580
Publication Date:
June 30, 2022
Filing Date:
December 22, 2021
Export Citation:
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Assignee:
SUNRESIN NEW MAT CO LTD (CN)
International Classes:
C02F1/42; C02F101/10
Foreign References:
CN112591851A2021-04-02
CN104138750A2014-11-12
CN105037601A2015-11-11
CN105214629A2016-01-06
CN106179537A2016-12-07
CN107057004A2017-08-18
CN110003376A2019-07-12
US4399235A1983-08-16
US5278193A1994-01-11
Other References:
See also references of EP 4190754A1
Attorney, Agent or Firm:
SUNSHINE INTELLECTUAL PROPERTY INTERNATIONAL CO., LTD. (CN)
Download PDF:
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