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A kind of industrial preparation method of zirconium-loaded nanocomposite resin adsorbent

A nano-composite, resin adsorption technology, applied in chemical instruments and methods, adsorption water/sewage treatment, other chemical processes, etc., can solve problems such as heat transfer and flow, achieve less material flow, save zirconium salt raw materials, save processes and cost effect

Active Publication Date: 2020-03-24
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It solves the problems of heat transfer, mass transfer and flow when mixing a large number of raw materials for production, and meets the needs of industrial preparation

Method used

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  • A kind of industrial preparation method of zirconium-loaded nanocomposite resin adsorbent
  • A kind of industrial preparation method of zirconium-loaded nanocomposite resin adsorbent
  • A kind of industrial preparation method of zirconium-loaded nanocomposite resin adsorbent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] An industrial preparation method of a zirconium-loaded nanocomposite resin adsorbent, comprising the following specific steps:

[0043] (1) Cleaning and drying of raw materials

[0044] First, add the commercially available NDA900 type resin raw material into the filter car, add 2t of resin in each batch, add about 2t of methanol solution, stir intermittently at 20-45°C, let it stand for 1h, and filter out the methanol solution by gravity filtration. The methanol solution that goes out is returned to the distillation system and reused after distillation;

[0045] Then transfer the resin to a vacuum desiccator and heat it to 30-60°C with a water bath while maintaining a vacuum of 0.05-0.2MPa. When the water content drops to 15-30%, unload to obtain a washed NDA900 resin.

[0046] (2) Zirconium salt impregnation and drying

[0047] Add 1-2t zirconium oxychloride (commercially available) and 20% hydrochloric acid into a 6000L reactor to prepare a 3000L zirconium salt sol...

Embodiment 2

[0060] The physical and chemical index of embodiment 2 loaded zirconium nanocomposite resin adsorbent products and the test method of application performance

[0061] 1. Appearance

[0062] By visual inspection, the appearance of the product of the present invention is moist light yellow spherical particles without visible mechanical impurities with normal eyesight.

[0063] 2. Physical and chemical indicators

[0064] 2.1 Sample pretreatment: Wash the sample repeatedly with deionized water until the effluent is clear and transparent, and the pH is neutral.

[0065] 2.2 Nanoparticles are processed according to the method specified in JY / T 011-1996:

[0066] Nanoparticles (calculated as ≤100nm), ≥20%.

[0067] 2.3 The mass fraction of zirconium content is pretreated according to the microwave digestion method specified in HJ / T0166-2004, and then the sample is measured according to the method specified in GB / T15072.18-2008:

[0068] The mass fraction of zirconium content is ...

Embodiment 3

[0083] An industrial preparation method of a zirconium-loaded nanocomposite resin adsorbent, comprising the following steps:

[0084] (A) Preparation of zirconium salt solution: the zirconium salt is dissolved in an acidic aqueous solution to obtain a zirconium salt solution with a mass fraction of 20%-60%; the zirconium cation present in the acidic aqueous solution is obtained, and the zirconium salt is selected from oxychloride zirconium oxide or zirconium carbonate, and the acidic aqueous solution is selected from 20-30% hydrochloric acid, 20-50% sulfuric acid or 20-30% nitric acid.

[0085] Select the zirconium salt solution of this mass fraction range in industrial mass production, when the concentration of zirconium salt solution is lower than 20%, be unfavorable for reaction to carry out, cause the zirconium loading rate on the finished resin (referring to strongly basic anion resin) to be low, As a result, the yield of the zirconium-loaded nanocomposite resin adsorbent...

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Abstract

The invention discloses an industrial preparation method of a zirconium loaded nanocomposite resin adsorbent, belongs to the fields of industrial production of nanocomposite resin adsorbents for wastewater treatment and particularly relates to the industrial preparation method of the zirconium loaded nanocomposite resin adsorbent recycled and reused with reaction mass. The industrial preparation method includes the steps: A), preparing a zirconium salt solution; B), adding strongly-basic anion resin to the zirconium salt solution in batches prior to stirring and soaking, wherein the zirconium salt solution is recycled and reused; C), performing drying; D), performing alkalization by adding a sodium hydroxide solution to obtain zirconium loaded nanocomposite resin, wherein alkaline liquor is recycled and reused; E), adding a hydrochloric acid solution for neutralization; F), performing washing. With the method, all the materials of cleaning fluid, the zirconium salt solution, the alkaline liquor, acid liquor, ethyl alcohol and the like can be recycled and reused, production cost and environment pollution are greatly reduced, energy conservation and emission reduction industrial policy of the current state is conformed, and the method is suitable for industrialized promotion.

Description

technical field [0001] The invention belongs to the field of industrial production of nano-composite resin adsorbents for wastewater treatment, and relates to an industrial preparation method of a zirconium-loaded nano-composite resin adsorbent with a strongly basic anion-exchange resin as a carrier, in particular to a reaction material The invention discloses an industrial preparation method of a recyclable and mechanically applicable zirconium-loaded nanocomposite resin adsorbent. Background technique [0002] With the development of modernization, there are a large number of low-concentration (below 5 mg / L) inorganic anion pollutants in industrial wastewater, domestic sewage, drinking water, rivers and lakes, and the inorganic anions include but are not limited to phosphate, phosphite , hypophosphite, arsenate, arsenite, fluoride, bromide, hyperphosphate, selenate, etc., which are toxic to the environment, organisms and humans, and lead to eutrophication of water bodies. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/26B01J20/30C02F1/28C02F101/14
CPCB01J20/265C02F1/285C02F2101/103C02F2101/105C02F2101/14
Inventor 张炜铭潘丙才吕路张孝林徐敬生赵昕陈良花铭张延杨
Owner NANJING UNIV
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