Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Two-dimensional clay-based composite phosphorus removing agent as well as preparation method and application thereof

A compound dephosphorization agent and dephosphorization agent technology, applied in the direction of chemical instruments and methods, alkali metal compounds, other chemical processes, etc., to achieve the effects of wide application range, short preparation time and simple preparation process

Active Publication Date: 2020-12-08
CENT SOUTH UNIV
View PDF7 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the prior art, there is no research report on using the excellent properties endowed by two-dimensional clay itself to improve the adsorption performance of phosphorus removal adsorbents.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Two-dimensional clay-based composite phosphorus removing agent as well as preparation method and application thereof
  • Two-dimensional clay-based composite phosphorus removing agent as well as preparation method and application thereof
  • Two-dimensional clay-based composite phosphorus removing agent as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0062] The invention provides a two-dimensional clay-based composite phosphorus removal agent and a preparation method, and the specific preparation steps are as follows:

[0063] (1) pulverize the two-dimensional clay to below 45 μm with an ultrafine pulverizer to obtain a two-dimensional clay powder for use;

[0064] (2) Mix 1 part of two-dimensional clay powder with 0.2 to 3 parts of M metal hydroxide (lanthanum hydroxide, calcium hydroxide, magnesium hydroxide, aluminum hydroxide, etc.), and grind them uniformly;

[0065] (3) in step (2), add 5~20 parts of urea, grind evenly, obtain ternary mixture;

[0066] (4) Putting the ternary mixture obtained in step (3) into a muffle furnace, calcining at a temperature of 400-600° C. for 1-5 hours (heating rate is 3-10° C. / min), and obtaining a two-dimensional clay-based composite Phosphorus remover.

Embodiment 1

[0070] (1) Weigh 0.1 g of rectorite powder and 0.1 g of lanthanum hydroxide, mix and grind them uniformly to obtain a mixture of rectorite and lanthanum hydroxide;

[0071] (2) take 1g of urea, join in the mixture of step (1), grind evenly, obtain rectorite-lanthanum hydroxide-urea ternary mixture;

[0072] (3) Putting the ternary mixture obtained in step (2) into a muffle furnace (air atmosphere), calcining at a temperature of 450 ° C for 3 h (heating rate is 5 ° C / min), to obtain a rectorite-based composite phosphorus removal Its phosphorus removal performance is shown in Table 1.

[0073] Detection experiment:

[0074] 1. Take the raw materials of Example 1 and the rectorite-based composite phosphorus removal agent before and after adsorption of phosphorus to carry out wide-angle X-ray diffraction analysis, and the results are as follows figure 1 As shown, the lanthanum oxide was in situ composited during the calcination process, and the rectorite structure was not destro...

Embodiment 2

[0079] (1) Weigh 0.1 g of rectorite powder and 0.1 g of calcium hydroxide, mix and grind them evenly to obtain a mixture of rectorite and calcium hydroxide;

[0080] (2) take by weighing 1g urea, join in step (1) mixture, grind evenly, obtain rectorite-calcium hydroxide-urea ternary mixture;

[0081] (3) Putting the ternary mixture obtained in step (2) into a muffle furnace (air atmosphere), calcining at a temperature of 450 ° C for 3 h (heating rate is 5 ° C / min), to obtain a rectorite-based composite phosphorus removal Its phosphorus removal performance is shown in Table 1.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention belongs to the field of material preparation, and particularly discloses a two-dimensional clay-based composite phosphorus removing agent and a preparation method. The two-dimensional clay-based composite phosphorus removing agent provided by the invention takes two-dimensional clay, hydroxide (such as lanthanum hydroxide, calcium hydroxide, magnesium hydroxide and aluminum hydroxide) and urea as raw materials, and the high-performance composite phosphorus removing agent is prepared by adopting a roasting method. Phosphorus in phosphorus-containing wastewater is effectively removed by utilizing the synergistic interaction among the components of the composite phosphorus removal agent through a physicochemical combination method. According to the method, the defects of high consumption and secondary pollution easily caused when the metal hydroxide, the metal oxide and the metal salt are independently used as the chemical phosphorus removal agent are overcome, and meanwhile, the application field of the two-dimensional clay is expanded. The composite phosphorus removing agent has the characteristics of simple process, short flow, low cost, simple and feasible operationand the like, and has optimistic industrial application prospect.

Description

technical field [0001] The invention belongs to the field of inorganic non-metallic materials, and particularly relates to a two-dimensional clay-based composite phosphorus removal agent and a preparation method. Background technique [0002] At present, the increasingly serious water eutrophication problem has an impact on the water environment and human landscape, seriously destroying the ecological balance, greatly limiting the sustainable development of society, and posing a threat to the survival and development of human beings. The prevention and control of water eutrophication has become an urgent problem in the field of environmental engineering. Excessive phosphorus content is one of the reasons for the eutrophication of water bodies. Therefore, effectively reducing the total phosphorus content in water bodies is one of the key means to control the degree of eutrophication in water bodies. In response to this, the relevant state departments have carried out more an...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/12B01J20/28B01J20/30C02F1/28C02F1/52C02F101/10
CPCB01J20/041B01J20/06B01J20/12B01J20/28014C02F1/281C02F1/5236C02F1/5263C02F2101/105B01J20/16B01J20/3021B01J20/3078C01B33/26C02F1/288C01P2002/72C01P2004/03C01P2004/20
Inventor 杨华明陈洪运欧阳静傅梁杰张毅刘赛男
Owner CENT SOUTH UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com