CN103028370A - Preparation method of efficient ammonia nitrogen adsorbent - Google Patents
Preparation method of efficient ammonia nitrogen adsorbent Download PDFInfo
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- CN103028370A CN103028370A CN2012105009431A CN201210500943A CN103028370A CN 103028370 A CN103028370 A CN 103028370A CN 2012105009431 A CN2012105009431 A CN 2012105009431A CN 201210500943 A CN201210500943 A CN 201210500943A CN 103028370 A CN103028370 A CN 103028370A
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Abstract
The invention relates to a preparation method of an efficient ammonia nitrogen adsorbent. The adsorbent can efficiently adsorb ammonia nitrogen in high-ammonia-nitrogen sewage, can implement regenerative desorption after reaching a saturated adsorption state, and thus, can be used repeatedly. The preparation method comprises the following steps: 1) pulverization: pulverizing high-grade zeolite to 200-325 meshes; 2) modification: crystallizing the zeolite powder with 5-8 wt% of sodium hydroxide and 2-3 wt% of sodium metalluminate in a reaction kettle at 100-110 DEG C for 9-10 hours; 3) water washing: washing the modified zeolite with deionized water until the pH value is 7-8; 4) drying: drying in a drying apparatus at 120-150 DEG C; 5) mixing: thoroughly mixing 80-85% of dried modified zeolite as a base material, 8-10% of 325-mesh selected coal powder as a pore forming agent and 5-10% of refractory cement as an adhesive in a mixing apparatus to obtain composite powderl 6) pelletization: pelletizing the composite powder to 1-3mm with a centrifugal pelletizer; and 7) sintering: naturally drying the composite powder pellets, continuously adding into a 110-120 DEG C rotary kiln, baking for 1-2 hours, heating to 600-700 DEG C, and sintering for 2-3 hours.
Description
Technical field
The present invention relates to the preparation method of ammonia nitrogen adsorbent, especially a kind of preparation method of high-efficiency ammonia nitrogen absorber.
Background technology
At present, the adsorbent that is applied in the ammonia and nitrogen pollution water treatment technology mainly is natural zeolite or natural modified zeolite.But this adsorbent can only be processed the contaminant water of low ammonia-nitrogen content, when ammonia nitrogen reaches certain value, is all impotentia removals of natural zeolite or natural modified zeolite.
Summary of the invention
In order to overcome the shortcoming of existing ammonia nitrogen adsorbent, the object of the present invention is to provide a kind of preparation method of high-efficiency ammonia nitrogen absorber, the ammonia nitrogen in this adsorbent energy efficient adsorption high-ammonia-nitrogen sewage, the saturated rear employing NaOH regeneration desorption of adsorbent, Reusability.High ammonia nitrogen water in the regenerated liquid can adopt stripping, ammonia still process or gas-water separation membrane technology, ammonia nitrogen is transformed into ammoniacal liquor or sulfate of ammoniac is used.
The preparation method of a kind of high-efficiency ammonia nitrogen absorber of the present invention may further comprise the steps:
1 pulverising step: the high-grade zeolite is crushed to 200 orders-325 order;
2. modification procedure: be the NaOH of 5%-8% with the zeolite powder quality, the sodium metaaluminate of 2%-3%, crystallization is 9 hours-10 hours in the reactor of 100 ℃-110 ℃ of temperature;
3. water-washing step: it is 7-8 that modified zeolite is cleaned to pH value with deionized water;
4. drying steps: in drying plant with 120 ℃ of-150 ℃ of dryings of temperature;
5. blend step: be basic material with the dried modified zeolite of 80%-85%, the selected coal dust of 325 orders of 8%-10% is pore creating material, and the refractory cement of 5%-10% is adhesive, fully is mixed into composite powder in mixing apparatus;
6. balling-up step: 1mm-3mm is arrived in the composite powder balling-up with centrifugal nodulizer;
7. sintering step: after the composite powder spheroid is natural drying, put into continuously in 110 ℃-120 ℃ the revolution cellar for storing things stove and cured 1 hour-2 hours, be warmed up to again 600 ℃ of-700 ℃ of sintering 2 hours-3 hours.
The specific embodiment
Following embodiment is for the more detailed the present invention of explanation, is confined to this but should not be construed as the present invention.
Embodiment 1:
The preparation method of a kind of high-efficiency ammonia nitrogen absorber of the present invention may further comprise the steps:
1 pulverising step: the high-grade zeolite is crushed to 200 orders;
2. modification procedure: be the NaOH of 6%-7% with the zeolite powder quality, 2% sodium metaaluminate, crystallization is 10 hours in the reactor of 100 ℃-110 ℃ of temperature;
3. water-washing step: it is 8 that modified zeolite is cleaned to pH value with deionized water;
4. drying steps: in drying plant with 120 ℃ of-150 ℃ of dryings of temperature;
5. blend step: be basic material with 85% dried modified zeolite, 8% the selected coal dust of 325 orders is pore creating material, and 7% refractory cement is adhesive, fully is mixed into composite powder in mixing apparatus;
6. balling-up step: 1mm-2mm is arrived in the composite powder balling-up with centrifugal nodulizer;
7. sintering step: after the composite powder spheroid is natural drying, put into continuously in 110 ℃-120 ℃ the revolution cellar for storing things stove and cured 1 hour, be warmed up to again 600 ℃ of-700 ℃ of sintering 3 hours.
Preparation method according to a kind of high-efficiency ammonia nitrogen absorber among the embodiment 1 is prepared, and only changes the following parameter of embodiment 1 following steps.
Modification procedure: be 8% NaOH with the zeolite powder quality, 3% sodium metaaluminate, crystallization is 10 hours in the reactor of 110 ℃ of temperature;
Blend step: be basic material with 80% dried modified zeolite, 10% the selected coal dust of 325 orders is pore creating material, and 10% refractory cement is adhesive, fully is mixed into composite powder in mixing apparatus.
More than design is only for explanation the present invention's, and be not to be limitation of the present invention, the those of ordinary skill in relevant technologies field, in the situation that does not break away from the spirit and scope of the present invention, other variation of having done and the technical scheme that all are equal to also should belong to category of the present invention.
Claims (1)
1. the preparation method of a high-efficiency ammonia nitrogen absorber is characterized in that may further comprise the steps:
1) pulverising step: the high-grade zeolite is crushed to 200 orders-325 order;
2) modification procedure: be the NaOH of 5%-8% with the zeolite powder quality, the sodium metaaluminate of 2%-3%, crystallization is 9 hours-10 hours in the reactor of 100 ℃-110 ℃ of temperature;
3) water-washing step: it is 7-8 that modified zeolite is cleaned to pH value with deionized water;
4) drying steps: in drying plant, use 120 ℃ of-150 ℃ of dryings of temperature;
5) blend step: be basic material with the dried modified zeolite of 80%-85%, the selected coal dust of 325 orders of 8%-10% is pore creating material, and the refractory cement of 5%-10% is adhesive, fully is mixed into composite powder in mixing apparatus;
6) balling-up step: 1mm-3mm is arrived in the composite powder balling-up with centrifugal nodulizer;
7) sintering step: after the composite powder spheroid is natural drying, put into continuously in 110 ℃-120 ℃ the revolution cellar for storing things stove and cured 1 hour-2 hours, be warmed up to again 600 ℃ of-700 ℃ of sintering 2 hours-3 hours.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012105009431A CN103028370A (en) | 2012-11-30 | 2012-11-30 | Preparation method of efficient ammonia nitrogen adsorbent |
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| CN2012105009431A CN103028370A (en) | 2012-11-30 | 2012-11-30 | Preparation method of efficient ammonia nitrogen adsorbent |
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| CN103028370A true CN103028370A (en) | 2013-04-10 |
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| CN2012105009431A Pending CN103028370A (en) | 2012-11-30 | 2012-11-30 | Preparation method of efficient ammonia nitrogen adsorbent |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107649091A (en) * | 2017-10-29 | 2018-02-02 | 李庆彪 | A kind of sorbing material for waste gas purification |
| CN109607825A (en) * | 2019-01-04 | 2019-04-12 | 北京科技大学 | A kind of ammonia nitrogen removal agent and preparation method thereof |
| CN111054303A (en) * | 2020-01-08 | 2020-04-24 | 中国计量大学 | Natural zeolite multifunctional modification method for improving ammonia nitrogen removal rate of water body |
| CN115445572A (en) * | 2022-09-14 | 2022-12-09 | 中国地质大学（武汉） | Light porous oblique zeolite foam environment-friendly material and preparation method and application thereof |
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| CN101462739A (en) * | 2009-01-09 | 2009-06-24 | 桂林工学院 | Method for preparing 4A zeolite molecular sieve from red desmine |
| CN201567240U (en) * | 2009-09-17 | 2010-09-01 | 刘严蓬 | Energy-saving preparation device using natural zeolites to synthesize 4A zeolites |
| CN102476809A (en) * | 2010-11-29 | 2012-05-30 | 中国科学院大连化学物理研究所 | Method for preparing Ba-containing L zeolite from kaolin performer |
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- 2012-11-30 CN CN2012105009431A patent/CN103028370A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101462739A (en) * | 2009-01-09 | 2009-06-24 | 桂林工学院 | Method for preparing 4A zeolite molecular sieve from red desmine |
| CN201567240U (en) * | 2009-09-17 | 2010-09-01 | 刘严蓬 | Energy-saving preparation device using natural zeolites to synthesize 4A zeolites |
| CN102476809A (en) * | 2010-11-29 | 2012-05-30 | 中国科学院大连化学物理研究所 | Method for preparing Ba-containing L zeolite from kaolin performer |
Non-Patent Citations (1)
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| 李晔等: "多孔改性沸石球的制备及应用效果研究", 《武汉理工大学学报》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107649091A (en) * | 2017-10-29 | 2018-02-02 | 李庆彪 | A kind of sorbing material for waste gas purification |
| CN109607825A (en) * | 2019-01-04 | 2019-04-12 | 北京科技大学 | A kind of ammonia nitrogen removal agent and preparation method thereof |
| CN111054303A (en) * | 2020-01-08 | 2020-04-24 | 中国计量大学 | Natural zeolite multifunctional modification method for improving ammonia nitrogen removal rate of water body |
| CN115445572A (en) * | 2022-09-14 | 2022-12-09 | 中国地质大学（武汉） | Light porous oblique zeolite foam environment-friendly material and preparation method and application thereof |
| CN115445572B (en) * | 2022-09-14 | 2023-08-25 | 中国地质大学（武汉） | Lightweight porous clinoptilolite foam environment-friendly material and preparation method and application thereof |
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Application publication date: 20130410 |