Preparation method of novel ammonium type zeolite material for treating desulfurization wastewater

A technology of desulfurization wastewater and zeolite materials, which is applied in water/sewage treatment, chemical instruments and methods, adsorption water/sewage treatment, etc., can solve the problem of lack of low-pollution treatment of desulfurization wastewater, and achieves strong applicability and easy application conditions effect of satisfaction

Inactive Publication Date: 2015-04-29
STATE GRID CORP OF CHINA +1
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  • Description
  • Claims
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Problems solved by technology

At present, there is a lack of low-pollution treatment of desulfurization wastewater in thermal power generation systems. At the same time, there are few application studies on the treatment of desulfurization wastewater by zwitterion-modified ammonium-type zeolites. Modified ammonium-type zeolite materials in order to provide reference for low-pollution treatment of desulfurization wastewater. Research and development in this area are also of great significance

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  • Preparation method of novel ammonium type zeolite material for treating desulfurization wastewater
  • Preparation method of novel ammonium type zeolite material for treating desulfurization wastewater

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preparation example Construction

[0022] A method for preparing a novel ammonium-type zeolite material for treating desulfurization wastewater, comprising the following steps:

[0023] (1) Throwing granular ammonium zeolite with a mass fraction of 1-1.5 parts into concentrated phosphoric acid with a mass fraction of 3-5 parts at 30°C for 5-6 hours;

[0024] (2) Rinse the soaked ammonium zeolite three times with hot deionized water, and dry at 105° C. for 6 hours;

[0025] (3) Place the dried ammonium zeolite above in a microwave generator for 18 hours of solid-liquid isomorphic substitution reaction, rinse the product with hot deionized water for 3 times, and dry it at 105°C for 6 hours to make a microwave phosphorus-modified ammonium zeolite Zeolite;

[0026] (4) Hydrothermally mix the above-mentioned microwave phosphorus-modified ammonium zeolite with 4-5 parts of CPB and BS-12 compound liquid for 8 hours, rinse the product with deionized water for 5 times, and dry for 6-8 hours to prepare A compound surfa...

example 1

[0033] A method for preparing a novel ammonium-type zeolite material for treating desulfurization wastewater, comprising the following steps:

[0034] (1) 1 part of granular ammonium zeolite with a particle size of 0.25 mm in mass fraction is put into 3 parts of concentrated phosphoric acid with a concentration of 85.11% and soaked for 5 to 6 hours at 30°C;

[0035] (2) Rinse the soaked ammonium zeolite three times with hot deionized water, and dry at 105° C. for 6 hours;

[0036] (3) Place the dried ammonium zeolite above in a microwave generator for 18 hours of solid-liquid isomorphic substitution reaction, rinse the product with hot deionized water for 3 times, and dry it at 105°C for 6 hours to make a microwave phosphorus-modified ammonium zeolite Zeolite;

[0037] (4) Mix the above-mentioned microwave phosphorus-modified ammonium zeolite with 4 parts by mass fraction, CPB with a concentration of 3.5g / L and BS-12 compound liquid for 8 hours, rinse the product with deioniz...

example 2

[0039] A method for preparing a novel ammonium-type zeolite material for treating desulfurization wastewater, comprising the following steps:

[0040] (1) 1.2 parts of granular ammonium zeolite with a particle size of 0.35 mm in mass fraction is put into 3 parts of concentrated phosphoric acid with a concentration of 86% and soaked for 5 to 6 hours at 30°C;

[0041] (2) Rinse the soaked ammonium zeolite three times with hot deionized water, and dry at 105° C. for 6 hours;

[0042] (3) Place the dried ammonium zeolite in a microwave generator for 18 hours of solid-liquid crystal substitution reaction, rinse the product with hot deionized water for 3 times, and dry it at 105°C for 6 hours to make a microwave phosphorus-modified ammonium zeolite Zeolite;

[0043] (4) Hydrothermally mix the above-mentioned microwave phosphorus-modified ammonium zeolite with 4.5 parts by mass fraction of CPB and BS-12 compound solution with a concentration of 4g / L for 8 hours, rinse the product wi...

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Abstract

The invention relates to a preparation method of a novel ammonium type zeolite material for treating desulfurization wastewater. The preparation method comprises the following steps: (1) feeding 1-1.5 weight parts of ammonium type zeolite into 3-5 weight parts of concentrated phosphoric acid at 30 DEG C, and soaking for 5-6 hours; (2) flushing the soaked ammonium type zeolite for 3 times, and drying for 6 hours at 105 DEG C; (3) putting the dried ammonium type zeolite into a microwave generator, performing solid-liquid phase isomorphous substitution reaction for 18 hours, flushing a product for 3 times, and drying for 6 hours at 105 DEG C to prepare microwave phosphorus modified ammonium type zeolite; and (4) hydrothermally mixing the microwave phosphorus modified ammonium type zeolite with 4-5 weight parts of compound liquid of CPB and BS-12 for 8 hours, flushing a product for 5 times, and drying for 6-8 hours to prepare compound surfactant modified ammonium type zeolite. The novel ammonium type zeolite disclosed by the invention has relatively high adsorption capacity on organic matters in the desulfurization wastewater, and can also be subjected to quantitative analysis.

Description

technical field [0001] The invention belongs to the technical field of treatment materials for desulfurization wastewater in thermal power plants, in particular to a method for preparing a novel ammonium-type zeolite material used for treating desulfurization wastewater. Background technique [0002] A large amount of desulfurization wastewater will be generated during the operation of thermal power generation system, which is characterized by high organic matter content, high turbidity, and heavy metal content. At present, the treatment of desulfurization wastewater mainly includes chemical precipitation method, fluidized bed method, chemical precipitation-microfiltration membrane method, etc. , but the disadvantage is that after treatment, secondary products will be produced and cause serious pollution to the environment. [0003] Ammonium zeolite is a cation-modified product of natural zeolite, which has the characteristics of adsorbing organic matter, exchanging cations,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/16B01J20/30C02F1/28
CPCB01J20/165C02F1/281C02F2101/30C02F2103/18
Inventor 于金山郭军科苏展卢立秋郝春艳赵鹏邵林刘鸿芳
Owner STATE GRID CORP OF CHINA
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