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A nano composite material and application of synchronous selective adsorption phosphorus and nitrate

A nano-composite material and nitrate technology, which is applied in the field of advanced treatment of sewage biochemical tail water, can solve the problems of inability to achieve simultaneous phosphorus and nitrate removal, high-efficiency and selective removal, etc., achieve high mechanical strength, good regeneration performance, and improve adsorption performance Effect

Active Publication Date: 2020-10-02
YANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] Aiming at the problem that the existing adsorption / ion exchange materials cannot realize the simultaneous and efficient selective removal of phosphorus and nitrate, the present invention provides a nanocomposite material for synchronous and selective adsorption of phosphorus and nitrate and its application, using this material to treat sewage biochemical tailings Water can concentrate the adsorption of phosphorus and nitrate pollutants in one adsorption material. The operation process is simple, the operation effect is stable, and the cost is low. It produces economic benefits while producing environmental benefits.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] First, a nanocomposite material for synchronous and selective adsorption of phosphorus and nitrate was prepared, and the preparation process was as follows:

[0046] (1) Get 50g of chloromethylated polystyrene microspheres (mass concentration of chlorine is 18%) to 100mL deionized water, add 100mL of tributylamine solution at 10°C, then heat up to 60°C, keep warm and stir for 8 hours; after the reaction is completed, filter out the polystyrene microspheres and dry them at 60°C for 12 hours to prepare quaternized nanoporous polystyrene microspheres;

[0047] (2) 20 g of quaternized polystyrene microspheres prepared in step (1) were added to 200 mL of FeCl 3 +HCl mixed solution (FeCl 3 The mass concentration of HCl is 15%, the mass concentration of HCl is 10%), stirring and reacting at 25°C for 12h;

[0048] (3) Filter out the polystyrene microspheres after the reaction in step (2), and add them into 200mL NaOH+NaCl mixed solution (the mass concentration of NaOH is 10%,...

Embodiment 2

[0055] First, a nanocomposite material for synchronous and selective adsorption of phosphorus and nitrate was prepared, and the preparation process was as follows:

[0056] (1) Take 80g of chloromethylated polystyrene microspheres (mass concentration of chlorine is 18%) to 150mL of deionized water, add 150mL of tripropylamine solution at 10°C, then heat up to 60°C at a rate of 15°C / h ℃, and kept stirring for 6 hours; after the reaction was completed, the polystyrene microspheres were filtered out and dried at 60 °C for 12 hours, thereby preparing quaternized nanoporous polystyrene microspheres;

[0057] (2) 30 g of quaternized polystyrene microspheres prepared in step (1) were added to 200 mL of FeCl 3 +HCl mixed solution (FeCl 3 The mass concentration of HCl is 10%, the mass concentration of HCl is 10%), stirring and reacting at 25°C for 12h;

[0058] (3) Filter out the polystyrene microspheres after step (2) reaction, add to 200mL NaOH+NaCl mixed solution (the mass concent...

Embodiment 3

[0066] First, a nanocomposite material for synchronous and selective adsorption of phosphorus and nitrate was prepared, and the preparation process was as follows:

[0067] (1) Get 100g of chloromethylated polystyrene microspheres (mass concentration of chlorine is 18%) to 200mL of deionized water, add 200mL of triethylamine solution at 10°C, then heat up to 60°C, keep warm and stir for 4 hours; after the reaction is completed, filter out the polystyrene microspheres and dry them at 60°C for 12 hours to prepare quaternized nanoporous polystyrene microspheres;

[0068] (2) 50 g of quaternized polystyrene microspheres prepared in step (1) were added to 200 mL of FeCl 3 +HCl mixed solution (FeCl 3 The mass concentration of HCl is 5%, the mass concentration of HCl is 10%), stirring and reacting at 25°C for 12h;

[0069] (3) Filter out the polystyrene microspheres after step (2) reaction, add to 200mL NaOH+NaCl mixed solution (the mass concentration of NaOH is 5%, the mass concen...

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Abstract

The invention discloses a nanocomposite material for synchronously and selectively adsorbing phosphorus and nitrate and its application, belonging to the field of advanced treatment of biochemical tail water of sewage. The carrier of the nanocomposite material for synchronously and selectively adsorbing phosphorus and nitrate is a quaternized nanoporous polystyrene sphere, and Fe(III) oxide nanoparticles are evenly distributed in the pores. Using the material of the present invention to treat sewage biochemical tail water can concentrate the adsorption of two types of pollutants, phosphorus and nitrate, in one adsorption material. The operation process is simple, the operation effect is stable, and the cost is low. While producing environmental benefits, it also produces economic benefits.

Description

technical field [0001] The invention belongs to the field of advanced treatment of sewage biochemical tail water, and more specifically relates to a nanocomposite material for synchronous and selective adsorption of phosphorus and nitrate and its application. Background technique [0002] Eutrophication of water body is one of the common environmental problems faced by countries all over the world. After long-term research, people gradually realized that the eutrophication of water body is mainly caused by the abnormal development of primary productivity of water ecosystem caused by the overload of nutrients such as nitrogen and phosphorus in water body. Therefore, reducing the discharge of nutrients such as nitrogen and phosphorus is an important measure to control the eutrophication of water bodies. [0003] In recent years, the total amount of sewage discharge in my country has been increasing year by year, among which the discharge of industrial wastewater has stabilize...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/22B01J20/26B01J20/28C02F1/28C02F101/10C02F101/16
CPCB01J20/22B01J20/261B01J20/28007B01J20/28083C02F1/28C02F1/285C02F2101/105C02F2101/163C02F2305/08
Inventor 杨文澜史新星王继承腾凤云杨迪赵磊徐国锋左天培冯金硕
Owner YANGZHOU UNIV
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