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Phosphorus removal matrix material, and preparation method and application thereof

A technology of matrix material and mass ratio, applied in chemical instruments and methods, other chemical processes, inorganic chemistry, etc., can solve the problems of ineffective and stable phosphorus removal, limited phosphorus removal effect, etc.

Pending Publication Date: 2021-07-06
BEIJING WATER SCI & TECH INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the limitation of phosphorus removal effect of the existing imitation nature or surface flow artificial wetland dephosphorization matrix material, which cannot be efficiently and stably dephosphorized after being applied to imitation nature or surface flow artificial wetland, and then provide a A kind of dephosphorization matrix material and its preparation method and application

Method used

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  • Phosphorus removal matrix material, and preparation method and application thereof
  • Phosphorus removal matrix material, and preparation method and application thereof
  • Phosphorus removal matrix material, and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0033] This embodiment provides a method for preparing a phosphorus removal matrix material, comprising the following steps:

[0034] 1) Put the sodium-based bentonite in deionized water (the mass ratio of sodium-based bentonite and deionized water is 1:5), stir evenly, and then stand for stratification. The standing time is 12h, and the upper suspension solution is removed , then dry the lower layer mixture at 70°C for 12 hours, cool and dry for later use, and obtain purified sodium bentonite;

[0035] 2) Mix 10g of purified sodium bentonite, 3g of quicklime and 30g of water to obtain a mixture, and then heat treat the mixture, the heat treatment temperature is 150°C, and the heat treatment time is 6h; The obtained mixture is naturally cooled and air-dried for 7 hours until the surface layer is cracked, then water is sprayed on the surface layer of the mixture for curing, and finally the mixture after water spraying and curing is air-dried for 7 hours until the surface layer ...

Embodiment 2

[0037] This embodiment provides a method for preparing a phosphorus removal matrix material, comprising the following steps:

[0038] 1) Put the sodium-based bentonite in deionized water (the mass ratio of sodium-based bentonite and deionized water is 1:5), stir evenly, and then stand for stratification. The standing time is 12h, and the upper suspension solution is removed , then dry the lower layer mixture at 70°C for 12 hours, cool and dry for later use, and obtain purified sodium bentonite;

[0039] 2) Mix 10g of purified sodium bentonite, 5g of quicklime and 30g of water to obtain a mixture, and then heat treat the mixture, the heat treatment temperature is 150°C, and the heat treatment time is 6h; The obtained mixture is naturally cooled and air-dried for 7 hours until the surface layer is cracked, then water is sprayed on the surface layer of the mixture for curing, and finally the mixture after water spraying and curing is air-dried for 7 hours until the surface layer ...

Embodiment 3

[0041] This example provides a method for preparing a phosphorus-removing matrix material. Compared with Example 2, the only difference is that the heat treatment temperature in step 2) is 450° C., and the heat treatment time is 2 hours.

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Abstract

The invention relates to the field of water treatment phosphorus removal, and especially relates to a phosphorus removal matrix material, and a preparation method and application thereof. The preparation method of the phosphorus removal matrix material provided by the invention comprises the following steps: mixing bentonite, quick lime and water to obtain a mixture, wherein the mass ratio of the bentonite to the quick lime to the water is 1: (0.3-0.5): 3; and carrying out heat treatment on the mixture at 150-450 DEG C for 2-6 h to obtain the phosphorus removal matrix material. According to the preparation method of the phosphorus removal matrix material, the bentonite, the quick lime and the water are mixed according to the specific proportion, then the mixture is subjected to heat treatment at the specific temperature, the surface roughness of the prepared phosphorus removal matrix material is obviously improved, and the adsorption capacity of the phosphorus element in the water can be improved.

Description

technical field [0001] The invention relates to the field of phosphorus removal in water treatment, in particular to a phosphorus removal matrix material and its preparation method and application. Background technique [0002] The matrix is ​​an important part of the constructed wetland, which not only provides habitat space for animals, plants and microorganisms, but also directly removes pollutants through physical and chemical actions such as adsorption, filtration, ion exchange, and complexation reactions. With the improvement of human living standards, eutrophication appears in some rivers and lakes and other surface water bodies. Phosphorus is the limiting factor of lake eutrophication and a priority factor in the process of water body restoration. Once a large amount of phosphorus enters the water body, it often causes planktonic The rapid growth of plants affects the safety of drinking water. [0003] Phosphorus removal methods mainly include chemical precipitation...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/28B01J20/10B01J20/04B01J20/30C02F3/32C02F3/34C02F101/10
CPCC02F1/281B01J20/041B01J20/10C02F3/32C02F3/34C02F2101/105
Inventor 战楠赵立新李兆新严玉林王培京黄炳彬孟庆义李其军
Owner BEIJING WATER SCI & TECH INST
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