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Planting-type hydroxyapatite filter particles based on planting method for defluoridation water treatment and preparation method thereof

A hydroxyapatite and water treatment technology, applied in water/sewage treatment, water/sludge/sewage treatment, ion-exchanged water/sewage treatment, etc. The problem of high cost, to achieve the effect of simple equipment, improved processing efficiency and low operating cost

Active Publication Date: 2018-02-09
JIANGSU YONGGUAN WATER & WASTERWATER EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method still has the following obvious deficiencies: first, the aluminum ion content in aluminum-based water treatment materials is within the standard range, but still higher than non-aluminum-based water treatment materials, and there is a risk of excessive aluminum ions; The process and equipment for processing materials are relatively complicated, and they have to go through processes such as filtration, coagulation, and precipitation. The problem of reduced effectiveness

Method used

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  • Planting-type hydroxyapatite filter particles based on planting method for defluoridation water treatment and preparation method thereof
  • Planting-type hydroxyapatite filter particles based on planting method for defluoridation water treatment and preparation method thereof
  • Planting-type hydroxyapatite filter particles based on planting method for defluoridation water treatment and preparation method thereof

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preparation example Construction

[0032] combine figure 1 , figure 2 and image 3, a method for preparing planted hydroxyapatite filter grains based on the planting method for defluoridation water treatment proposed by the present invention is characterized in that the method is based on the self-filtration in the structure of the planted hydroxyapatite filter grains From the inner core to the outer surface of the grain, it is divided into the inner core planting layer 1, the transitional planting layer 2 and the outer planting layer 3 in order according to the increase of the hydroxyl content, and the chemical bonding between the adjacent two layers; wherein: the inner core planting layer 1 The main body is the hydroxyl migration material body of the planting type hydroxyapatite filter grain; the main body of the transition planting layer 2 is the hydroxyl exchange material body of the planting type hydroxyapatite filter grain; the main body of the outer planting layer 3 is the planting type The milk stone...

Embodiment 1

[0058] (1) The main body of the core planting layer 1 of the planting type hydroxyapatite filter grain is the hydroxyl migration material body, according to the component content of the hydroxyl migration material body in wt %: 35 parts of hydroxyapatite powder, 40 parts of attapulgite powder , 13 parts of bentonite powder, 9 parts of oxalic acid powder and 3 parts of carboxymethyl cellulose; through a 140 mesh sieve, the thickness of the inner core planting layer 1 is controlled to be 0.5mm during the molding process;

[0059](2) The main body of the transitional planting layer 2 of the planting type hydroxyapatite filter grain is the hydroxyl exchange material body, according to the component content of the hydroxyl exchange material body in wt %: 50 parts of hydroxyapatite powder, 34 parts of attapulgite powder , 12 parts of malonic acid powder and 4 parts of water glass; through a 140 mesh sieve, the thickness of the transitional planting layer 2 is controlled to be 0.3mm d...

Embodiment 2

[0064] (1) The main body of the core planting layer 1 of the planting type hydroxyapatite filter grain is the hydroxyl migration material body, according to the component content of the hydroxyl migration material body in wt %: 50 parts of hydroxyapatite powder, 36 parts of attapulgite powder , 10 parts of bentonite powder, 3 parts of glutaric acid powder and 1 part of water glass; through a 270 mesh sieve, the thickness of the inner core planting layer 1 is controlled to be 1.5mm during the molding process;

[0065] (2) The main body of the transitional planting layer 2 of the planting type hydroxyapatite filter grain is the hydroxyl exchange material body, according to the component content of the hydroxyl group migration material body in wt %: 65 parts of hydroxyapatite powder, 27 parts of attapulgite powder , 6 parts of succinic acid powder and 2 parts of water glass; through a 270 mesh sieve, the thickness of the transitional planting layer 2 is controlled to be 0.5mm duri...

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Abstract

The invention relates to a planting type hydroxyapatite filter particle for defluorination water treatment based on a planting method and a preparation method of the planting type hydroxyapatite filter particle. The planting type hydroxyapatite filter particle is characterized in that the planting type hydroxyapatite filter particle structurally comprises a core planting layer 1, a transition planting layer 2 and an outer surface planting layer 3 in sequence from a core to an outer surface in a manner that the contents of hydroxyl are increased, wherein the two adjacent layers are chemically bonded; a main body of the core planting layer 1 is a hydroxyl transfer material body of the planting type hydroxyapatite filter particle; a main body of the transition planting layer 2 is a hydroxyl exchange material body of the planting type hydroxyapatite filter particle; and a main body of the outer surface planting layer 3 is a galalith planting material body of the planting type hydroxyapatite filter particle. The material body of the planting type hydroxyapatite filter particle provided by the invention is high in defluorination efficiency; and a method of a defluorination water treatment process is simple, convenient and reliable, so that the requirement of the defluorination water treatment process based on the planting method can be met.

Description

technical field [0001] The invention belongs to the technical field of water treatment materials, and in particular relates to a planting type hydroxyapatite filter particle and a preparation method thereof based on planting method for defluoridation water treatment. Background technique [0002] Fluorine is one of the essential trace elements for the human body, but long-term drinking of high-fluorine water can lead to fluorosis, which will seriously affect human health. Therefore, the World Health Organization has announced a regulation that the fluorine content of drinking water should not exceed 1.5mg / L. Nowadays, the research on fluoride removal water treatment methods has been highly valued by various countries. The methods of fluoride removal water treatment published in the previous research mainly include coagulation sedimentation method, chemical precipitation method, electrodialysis method, electrocoagulation method, reverse osmosis method, nanofiltration method, i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/00C02F1/42C02F101/14
CPCC02F1/00C02F1/42C02F2101/14
Inventor 刘泽山刘雨
Owner JIANGSU YONGGUAN WATER & WASTERWATER EQUIP CO LTD
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