公开(公告)号：US11007504B2

公开(公告)日：2021-05-18

申请号：US15572080

申请日：2016-05-05

Applicant: Gruppo Zilio S.p.A.

Inventor： Daniele Ragazzon

IPC: B01J20/06 ,  C02F1/28 ,  B01J20/28 ,  C01G49/02 ,  B01J20/30 ,  C02F101/20 ,  C02F101/10

Abstract: A method for producing an iron-containing filter material for water treatment includes the steps of reacting a trivalent iron compound and a base inside a vessel until the trivalent iron is completely neutralized, to obtain an iron hydroxide and a salt consisting of the anion of the trivalent iron compound and the cation of the base; feeding the iron hydroxide and the salt into ceramic membranes to wash the iron hydroxide from the salt in cross-flow; feeding the iron hydroxide suspension to a membrane filter press where part of the water is removed, to obtain a panel having a moisture content of less than 77% by weight; inserting the panel into containers; and positioning the containers inside a refrigeration chamber operating at atmospheric pressure and at temperatures less than 0° C. for a time between 24 and 240 hours.

公开(公告)号：US20180133683A1

公开(公告)日：2018-05-17

申请号：US15572080

申请日：2016-05-05

Applicant: Gruppo Zilio S.p.A.

Inventor： Daniele Ragazzon

IPC: B01J20/06 ,  B01J20/30 ,  C02F1/28

CPC classification number: B01J20/06 ,  B01J20/28016 ,  B01J20/3035 ,  B01J20/3071 ,  B01J20/3085 ,  C01G49/02 ,  C02F1/281 ,  C02F2101/103 ,  C02F2101/20

Abstract: A method for producing an iron-containing filter material for water treatment includes the steps of reacting a trivalent iron compound and a base inside a vessel until the trivalent iron is completely neutralized, to obtain an iron hydroxide and a salt consisting of the anion of the trivalent iron compound and the cation of the base; feeding the iron hydroxide and the salt into ceramic membranes to wash the iron hydroxide from the salt in cross-flow; feeding the iron hydroxide suspension to a membrane filter press where part of the water is removed, to obtain a panel having a moisture content of less than 77% by weight; inserting the panel into containers; and positioning the containers inside a refrigeration chamber operating at atmospheric pressure and at temperatures less than 0° C. for a time between 24 and 240 hours.