Multifunctional adsorption particles capable of treating industrial organic wastewater with imbalance of nitrogen and phosphorus and preparation method thereof

A technology for organic wastewater and adsorption particles, which is applied in chemical instruments and methods, adsorption water/sewage treatment, other chemical processes, etc., can solve problems such as lack of adsorption materials, and achieve the effect of simple production process and adsorption of organic pollutants

Inactive Publication Date: 2014-03-05
BEIJING NORMAL UNIVERSITY
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AI Technical Summary

Problems solved by technology

However, there is currently a lack of adsorbent materials for the treatment of nitrogen- and phosphorus-deficient industrial organic wastewater

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] 100mL of NH with a concentration of 0.35mol / L 4 HCO 3 solution and 100mL Ca(NO 3 ) 2 Solution, mixed uniformly to obtain mixed solution A; 100mL concentration of 0.35mol / L (NH 4 ) 2 HPO 4 The solution was slowly added dropwise to 200mL mixed solution A under stirring conditions to obtain mixed solution B; add concentrated HNO to mixed solution B dropwise 3 Until clarification, mixed solution C is obtained; the pH value of mixed solution C is adjusted to 3.5 with NaOH solution with a concentration of 0.01mol / L and hydrochloric acid solution with a concentration of 0.01mol / L to obtain mixed solution D; add 100 mL of NH with a concentration of 1.1mol / L 4 Cl aqueous solution, mixed uniformly to obtain mixed solution E; to mixed solution E, adding 50mL concentration of 0.15mol / L calcium potassium ethylenediaminetetraacetic acid solution, mixed uniformly obtained mixed solution F;

[0024] Put 60 mL of urea aqueous solution with a mass fraction of 47% in a water bath a...

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PUM

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Abstract

The invention discloses multifunctional adsorption particles capable of treating industrial organic wastewater with imbalance of nitrogen and phosphorus and a preparation method thereof. The preparation method comprises the steps of preparing a mixed solution F from a NH4HCO3 solution, a Ca(NO3)2 solution, a (NH4)2HPO4 solution, a NaOH solution, a nitric acid solution, a urea water solution and an ethylenediaminetetraacetic acid calcium sodium solution; preparing a mixed solution L from urea and a formaldehyde water solution; preparing a mixed solution M from a styrene chloroform solution, a divinyl benzene chloroform solution and an azobisisobutyronitrile chloroform solution; dropping the mixed solution L into the mixed solution M to obtain a mixed solution N; dropping the mixed solution F into the mixed solution N to obtain a mixed solution O; dropping the mixed solution O into a polyvinyl alcohol solution to obtain a mixed solution P; adding the polyvinyl alcohol solution into the mixed solution P, and performing centrifugal separation to obtain the multifunctional adsorption particles capable of treating the industrial organic wastewater with imbalance of nitrogen and phosphorus. The preparation process disclosed by the invention is simple, and a prepared multifunctional adsorbent has the function of nitrogen and phosphorus sustained release and the function of adsorbing pollutants in industrial organic wastewater.

Description

technical field [0001] The invention belongs to the technical field of industrial organic wastewater treatment, and in particular relates to a multifunctional adsorption particle capable of treating nitrogen and phosphorus imbalance industrial organic wastewater and a preparation method. Background technique [0002] Industrial organic wastewater involves many industries such as energy, minerals, and chemical industry. Adsorption-biodegradation, as a combined water treatment technology, plays an important role in the treatment of wastewater. At present, the most commonly used adsorption materials for adsorbing organic pollutants can be divided into physical adsorption materials, chemical adsorption materials and biological adsorption materials. Among them, physical adsorption materials include activated carbon, molecular sieve, zeolite, activated clay and clay ore and other solids with high specific surface area, which have the advantages of high extraction efficiency and st...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/30C02F1/28
Inventor 豆俊峰秦伟丁爱中许新宜云影
Owner BEIJING NORMAL UNIVERSITY
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