Multifunctional adsorption plate applied to the treatment of nitrogen and phosphorus-deficient organic wastewater and its preparation method

A multifunctional technology for organic wastewater treatment, applied in biological water/sewage treatment, adsorption water/sewage treatment, water/sludge/sewage treatment, etc., to achieve high treatment efficiency and simple manufacturing process

Inactive Publication Date: 2015-09-09
BEIJING NORMAL UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

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

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] 100 mL of NH with a concentration of 0.35 mol / L 4 HCO 3 solution and 100mL Ca(NO 3 ) 2 Solution, mixed evenly 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; use NaOH solution with a concentration of 0.01mol / L and hydrochloric acid solution with a concentration of 0.01mol / L to adjust the pH value of mixed solution C to 3.5 to obtain mixed solution D; add 100mL NH with a concentration of 1.1mol / L 4 Cl aqueous solution, mix well to get mixed solution E; add 50mL calcium potassium ethylenediamine tetraacetate solution with a concentration of 0.15mol / L to mixed solution E, mix evenly to get mixed solution F;

[0025] Put 60 mL of urea aqueous solution with a mass fraction of 47% in a water bath at 43°C for 35 minutes to ...

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Abstract

The invention discloses a multifunctional adsorption plate for treating nitrogen / phosphorus-deficient organic wastewater and a preparation method thereof. The preparation method comprises the following steps: preparing a NH4HCO3 solution, a Ca(NO3)2 solution, a (NH4)2HPO4 solution, a NaOH solution, a nitric acid solution, a urea water solution and a calcium potassium ethylenediamine tetraacetate solution into a mixed solution F; preparing urea and formalin into a mixed solution L; preparing a styrene chloroformic solution, a divinylbenzene chloroformic solution and an azodiisobutyronitrile chloroformic solution into a mixed solution M; dropwisely adding the mixed solution L into the mixed solution M to obtain a mixed solution N; dropwisely adding the mixed solution F into the mixed solution N to obtain a mixed solution O; injecting distilled water into a container filled with liquid nitrogen to prepare ice granules, screening, and compacting in a mold; and casting the mixed solution O into the mold to perform freeze molding, demolding and refrigerating to obtain the adsorption plate. The prepared multifunctional adsorption plate has the functions of slowing release of nitrogen and phosphorus and adsorbing pollutants in organic wastewater, and has high treatment efficiency for pollutants in the organic wastewater.

Description

technical field [0001] The invention belongs to the technical field of organic wastewater treatment, and in particular relates to a multifunctional adsorption plate applied to the treatment of nitrogen-phosphorus-deficient organic wastewater and a preparation method thereof. Background technique [0002] As a combined water treatment technology, adsorption-biodegradation plays an important role in the treatment of sewage. 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 strong enrichment function, but also have poor stability, easy desorption, and are susceptible to temperature. Insufficient...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/28B01J20/22B01J20/30C02F1/28C02F3/00
Inventor 豆俊峰袁静丁爱中许新宜云影
Owner BEIJING NORMAL UNIVERSITY
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