Preparation method of dephosphorisation absorptive material and application thereof

A technology for adsorbing materials and tailings, which is applied in chemical instruments and methods, adsorbed water/sewage treatment, other chemical processes, etc., can solve the problems of low adsorption capacity and high cost of artificially synthesized adsorbents, and achieves simple preparation process and low cost. Effect

Inactive Publication Date: 2011-02-09
NORTHWEST A & F UNIV
View PDF4 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention aims to solve the problem that the natural adsorbent used for phosphorus removal has low adsorption capacity and the cost of artificially synthesized adsorbent is high, and provides a preparation method and application of phosphorus removal adsorption material

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0026] The implementation method of preparing phosphorus-removing sorbent of the present invention is as follows:

[0027] Select manganese ore tailings and wash them with water for 5 times, dry them, grind them and sieve them to 100 meshes, add the screened particles to 4M hydrochloric acid solution at a solid-liquid volume ratio of 1:3, shake the solution fully for 4-8 hours Filter, add appropriate amount of sodium hydroxide solution to the filtrate, make the pH value of the solution between 7.0-8.0, and then add an appropriate amount of H2O with a concentration of 10-30%. 2 o 2 Solution, and keep the pH between 7.0-8.0 during the reaction process, stir for 15-25 minutes, then let it stand and age for 4-10 hours, then separate the solution from solid to liquid, add a certain amount of water to wash the solid and wash it with dilute Neutralize the lye or acid to a neutral pH value, repeat this many times until the washing liquid is neutral, and finally dry the solid adsorben...

Embodiment 3

[0029] The implementation method of preparing phosphorus-removing sorbent of the present invention is as follows:

[0030] Select the manganese ore tailings to be washed with clean water 8 times, dried, ground and sieved to 60 mesh, and the screened particles are added to 2.5M hydrochloric acid solution in an amount of solid-liquid volume ratio of 1:6, fully shaken for 8-12 hours, and The solution is filtered, and an appropriate amount of sodium hydroxide and potassium hydroxide mixed solution is added to the filtrate to make the pH value of the solution between 7.0-8.0, and then an appropriate amount of NaClO with a concentration of 10-30% is added 3 or KClO 3 Solution, and keep the pH between 7.0-8.0 during the reaction process, stir for 20-30 minutes, then stand and age for 6-12 hours, then separate the solution from solid to liquid, add a certain amount of water to wash the solid and wash it with dilute Neutralize the lye or acid to a neutral pH value, repeat this many ti...

Embodiment 4

[0032] The implementation method of preparing phosphorus-removing sorbent of the present invention is as follows:

[0033] Select black manganese ore tailings and wash them with clean water 10 times, dry them, grind them and sieve them to more than 10 meshes, add 10M nitric acid solution to the screened particles according to the solid-to-liquid volume ratio of 1:1, shake them fully for 2-4 hours The solution is filtered, and an appropriate amount of ammonia water is added to the filtrate to make the pH value of the solution between 7.0-8.0, and then an appropriate amount of NaClO with a concentration of 10-30% is added 4 or KClO 4 Solution, and keep the pH between 7.0-8.0 during the reaction process, stir for 25-35 minutes, then let stand and age for 8-14 hours, then separate the solution from solid to liquid, add a certain amount of water to wash the solid and wash it with dilute Neutralize the lye or acid to a neutral pH value, repeat this many times until the washing solu...

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
adsorption capacityaaaaaaaaaa
Login to view more

Abstract

The invention discloses a preparation method of dephosphorisation absorptive material, comprising the following steps: washing manganese ore tailing with clean water, grinding to powder and meshing, adding acid fluid to the meshed manganese ore powder, filtering the solution, taking the solution and adding proper amount of alkali to neutralize till the pH is 6 to 8, adding oxidant solution to the filtrate while agitating, controlling the pH to be 6 to 8 during the reaction process, thoroughly shaking, ageing, neutralizing, washing, filtering and drying to obtain the product. The preparation of dephosphorisation absorptive material using natural manganese ore tailing as raw material has simple process and low cost, and has thye effect of changing wastes into valuables. The absorptive agent can remove the phosphorous well, and the saturated absorption quantity is 12.5mg/g. The absorptive agent has fast absorptive speed, large absorptive volume and good purification effect.

Description

technical field [0001] The invention belongs to the technical field of water treatment application; in particular, it relates to a preparation method and application of phosphorus removal adsorption material. Background technique [0002] Studies have shown that phosphorus is the controlling factor in most eutrophic water bodies. Therefore, phosphorus removal from wastewater is particularly important to prevent and control water eutrophication. [0003] Commonly used phosphorus removal methods mainly include chemical and biological methods. Biological phosphorus removal is based on the principle that phosphobacteria absorb and release phosphorus under aerobic and anaerobic conditions, and achieve phosphorus removal through the alternating operation of aerobic and anaerobic. Phosphorus removal by chemical method mainly refers to the method of removing phosphorus in wastewater by using metal ions produced by iron salts, aluminum salts and lime and phosphate to form insoluble ...

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): C02F1/28B01J20/06B01J20/30C02F1/58
Inventor 刘婷吴鹍
Owner NORTHWEST A & F UNIV
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