Adsorbing material for phosphorus in water body and preparation and application methods thereof

An application method and water body technology, applied in the field of phosphate pollutant adsorption in water body, can solve the problems of inability to effectively control phosphate pollution, poor adsorption performance, harm to ecology, etc., and achieve easy operation, low operating cost, and wide applicable pH range. Effect

Active Publication Date: 2019-09-27
INST OF GEOCHEM CHINESE ACADEMY OF SCI
View PDF3 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a new water body phosphorus adsorption material and its preparation and application method, so as to solve the problems of high price, poor adsorpti

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
  • Adsorbing material for phosphorus in water body and preparation and application methods thereof
  • Adsorbing material for phosphorus in water body and preparation and application methods thereof
  • Adsorbing material for phosphorus in water body and preparation and application methods thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Embodiment 1: Water body phosphorus adsorption new material and preparation method thereof

[0036] One, according to the preparation method of a kind of water body phosphorus adsorption new material of the present invention comprises the following steps:

[0037] 1. Purification treatment

[0038] The natural calcium-based montmorillonite was pre-purified by gravity elutriation and centrifugation to obtain calcium-based montmorillonite with high purity. The specific method is: add dry, crushed, 325 mesh calcium-based montmorillonite into deionized water to make it fully dispersed, let it soak for 24 hours, discard the supernatant, then add deionized water, stir to make it even Mix and let stand for 30 minutes, centrifuge the upper layer solution at a speed of 600-1000 r / min for 5 minutes, and discard the precipitate. Continue to centrifuge the upper suspension at 3500r / min for 15min, discard the supernatant, and dry the obtained precipitate at 70°C to obtain montmori...

Embodiment 2

[0074] Embodiment 2: The application method of the new material for phosphorus adsorption in water body

[0075] Put the adsorbent material in Example 1 into the water body containing phosphorus pollutants. In the application of adsorption materials for phosphorus removal, dosage, suitable water pH range and cost are usually the three main factors considered for adsorption materials to remove phosphate. For this reason, the present invention also studies the influence of the dosage of the adsorbent material and the pH of the water body on the adsorption of phosphate by the zirconium-modified montmorillonite, and clarifies the application conditions of the prepared zirconium-modified adsorbent material. In addition, the present invention also carries out a risk assessment on the potential impact on the ecological environment after the adsorption material is applied.

[0076] 1. Dosing amount

[0077] The dosage (adsorbent material / phosphorus content ratio in water) ranges fro...

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

PropertyMeasurementUnit
Maximum adsorption capacityaaaaaaaaaa
Login to view more

Abstract

The invention discloses a new adsorbing material for phosphorus in a water body and preparation and application methods thereof. The new adsorbing material is a product of zirconium-modified ca-montmorillonite, namely Zr-CaM1 and/or Zr-CaM2, and the preparation method of the material comprises the following steps: (1) mixing and dispersing: adding deionized water into ca-montmorillonite and zirconium oxide for mixing and dissolving, and oscillating for dispersing to obtain mixed liquid; (2) pH value adjusting: adjusting the pH value of the mixed liquid to be 9-11, and then performing oscillating reaction under constant temperature to obtain a solid-liquid mixture; (3) solid-liquid separation: performing centrifugal separation on the solid-liquid mixture to obtain precipitate, washing the precipitate with the deionized water repeatedly, and then drying to obtain the product of the zirconium-modified ca-montmorillonite, namely Zr-CaM1 and/or Zr-CaM2. According to the invention, a impregnation-exchange-coprecipitation method is adopted to prepare the novel zirconium-modified montmorillonite adsorbing material, and the adsorbing material has the advantages that the process is simple, the operation is easy, adsorption capacity on phosphorus of the adsorbing material is large, pH applicable range is wide, the operation cost is relatively low, the material is ecological and environmentally friendly, and the like.

Description

technical field [0001] The invention relates to a new water body phosphorus adsorption material and its preparation and application method, belonging to the technical field of water body phosphate pollutant adsorption. Background technique [0002] With the rapid development of social economy and the acceleration of urbanization, the eutrophication of surface freshwater has become a major global water environment pollution problem. As the key limiting factor of water eutrophication, the excessive input of phosphorus causes the transparency of lakes, reservoirs and other fresh water bodies to decrease, the dissolved oxygen decreases, and the water quality deteriorates, seriously endangering aquatic ecosystems and human health. At present, my country's freshwater eutrophication situation is severe, and the total phosphorus concentration of lakes and reservoirs remains high (60% of the water body has a total phosphorus content higher than 0.05mg / L). Water supply requirements fr...

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
IPC IPC(8): B01J20/12B01J20/30C02F1/28
CPCB01J20/12C02F1/281
Inventor 张润宇邹银洪王立英
Owner INST OF GEOCHEM CHINESE ACADEMY OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap