Preparation method of modified clinoptilolite ion exchanger

A technology of ion exchanger and clinoptilolite, which is applied in the field of ion exchanger preparation, achieves the effect of less investment, low price and simple operation

Inactive Publication Date: 2012-07-04
CHINA UNIV OF GEOSCIENCES (WUHAN)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the ion exchange method has a high removal rate of ammonia nitrogen, the regeneration

Method used

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  • Preparation method of modified clinoptilolite ion exchanger
  • Preparation method of modified clinoptilolite ion exchanger
  • Preparation method of modified clinoptilolite ion exchanger

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] A kind of preparation method of modified clinoptilolite ion exchanger, it comprises the steps:

[0043] 1) put 10 order natural clinoptilolite into microwave oven, under 800W power, microwave radiation 6min;

[0044] 2) dissolving sodium chloride in ammonia-free water and configuring a sodium chloride solution with a concentration of 1.0 mol / L;

[0045] 3) placing the clinoptilolite obtained in step 1) in a conical flask (glass vessel), mixing the clinoptilolite and the sodium chloride solution uniformly, and modifying it for 4h at 50° C. and a shaking speed of 120 r / min to obtain mixture;

[0046] Wherein, the mass ratio of clinoptilolite and sodium chloride solution is 1: 8;

[0047] 4) the mixture obtained in step 3) is filtered, the filtrate is removed, the solid matter in the mixture is collected, and the solid matter is rinsed with ammonia-free water and dried to obtain the modified clinoptilolite ion exchanger (or modified clinoptilolite). Zeolite ion exchange...

Embodiment 2

[0060] A kind of preparation method of modified clinoptilolite ion exchanger, it comprises the steps:

[0061] 1) put 40 order natural clinoptilolite into microwave oven, under 800W power, microwave radiation 6min;

[0062] 2) dissolving sodium chloride in ammonia-free water to configure a sodium chloride solution with a concentration of 1 mol / L;

[0063] 3) placing the clinoptilolite obtained in step 1) in a conical flask, mixing the clinoptilolite and the sodium chloride solution uniformly, and modifying it for 4h at 50° C. and a shaking rate of 120 r / min to obtain a mixture;

[0064] Wherein, the mass ratio of clinoptilolite and sodium chloride solution is 1: 8;

[0065] 4) filter the mixture obtained in step 3), remove the filtrate, collect the solid matter in the mixture, rinse the solid matter with ammonia-free water and then dry to obtain a modified clinoptilolite ion-exchange adsorbent.

[0066] The initial ammonia nitrogen concentration in the low-concentration ammo...

Embodiment 3

[0068] A kind of preparation method of modified clinoptilolite ion exchanger, it comprises the steps:

[0069] 1) put 80 order natural clinoptilolite into microwave oven, under 800W power, microwave radiation 6min;

[0070] 2) dissolving sodium chloride in ammonia-free water and configuring a sodium chloride solution with a concentration of 1.0 mol / L;

[0071] 3) placing the clinoptilolite obtained in step 1) in a conical flask, mixing the clinoptilolite and the sodium chloride solution uniformly, and modifying it for 4h at 50° C. and a shaking rate of 120 r / min to obtain a mixture;

[0072] Wherein, the mass ratio of clinoptilolite and sodium chloride solution is 1: 8;

[0073] 4) filter the mixture obtained in step 3), remove the filtrate, collect the solid matter in the mixture, rinse the solid matter with ammonia-free water, and then dry it at the bottom to obtain a modified clinoptilolite ion-exchange adsorbent.

[0074] The initial ammonia nitrogen concentration in the l...

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Abstract

The invention relates to a preparation method of an ion exchanger. A preparation method of a modified clinoptilolite ion exchanger is characterized by comprising the following steps: 1), putting 10-80-mesh natural clinoptilolite into a microwave oven, and performing microwave radiation for 5-8min at 800W; 2), dissolving sodium chloride into ammonia-free water to prepare a solution with the concentration of 0.5-1.5mol/L; 3) uniformly mixing the clinoptilolite and the solution, and modifying to obtain a mixture, wherein the mass ratio of the clinoptilolite to the solution is 1: 6-1: 12; and 4), filtering the mixture, collecting solid substances in the mixture, rinsing the solid substances with ammonia-free water cleanly, and drying the solid substances to prepare the modified clinoptilolite ion exchanger. The prepared modified clinoptilolite ion exchanger can remove ammonia and nitrogen in secondary effluent of a municipal sewage treatment plant and low-concentration ammonia nitrogen wastewater, with the removing rate of 88.66-99.24 percent. The preparation method of the modified clinoptilolite ion exchanger is simple, easy to operate, economical, feasible, and low in sewage treatment cost and the investment.

Description

technical field [0001] The invention relates to a preparation method of an ion exchanger, in particular to a preparation method of a modified clinoptilolite ion exchanger. Background technique [0002] Although there are many methods that can effectively remove ammonia nitrogen, such as physical methods such as distillation, reverse osmosis, pulse discharge plasma technology, ultrasonic wave and soil irrigation, etc.; chemical methods include ammonia stripping, chemical precipitation, breakpoint chlorination, electrodialysis etc.; physicochemical methods include selective exchange adsorption method, catalytic oxidation method, electrochemical oxidation technology, etc.; biological methods include biological nitrification, immobilization biotechnology, algae cultivation, etc., but if applied to ammonia nitrogen in secondary biochemical effluent of urban sewage treatment plants It must have the advantages of convenient application, stable treatment performance, adaptability to...

Claims

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Application Information

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IPC IPC(8): B01J20/16B01J20/30C02F1/42
Inventor 鲍建国袁悦靳孟贵李民敬胡为
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)
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