CN104069816A - Removal agent employing modified coal cinders to treat ammonia in wastewater - Google Patents
Removal agent employing modified coal cinders to treat ammonia in wastewater Download PDFInfo
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- CN104069816A CN104069816A CN201410358636.3A CN201410358636A CN104069816A CN 104069816 A CN104069816 A CN 104069816A CN 201410358636 A CN201410358636 A CN 201410358636A CN 104069816 A CN104069816 A CN 104069816A
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- removal agent
- wastewater
- ammonia
- calcium oxide
- modified coal
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Abstract
The invention aims to provide a removal agent employing modified coal cinders to treat ammonia in wastewater. In order to achieve the aim, the removal agent adopts the following technical scheme: coal cinders are got, dried and activated for 1-3 h at 110 DEG C, then taken out to be cooled in a drier, crushed, and screened with a 120-mesh sieve; a certain amount of coal ash is taken out and placed in a calcium oxide solution of a certain mass concentration, with the alkali-ash mass ratio of 1:11; the coal ash and the calcium oxide solution are stirred for 1-5 h in a constant-temperature water bath kettle at 60-80 DEG C, and taken out for still standing; a supernatant liquid is removed, a precipitate is drained dry, washed repeatedly to be neutral, and dried and activated at 110 DEG C to obtain the removal agent.
Description
Technical field
The present invention relates to ammonia adsorbing domain, be specifically related to a kind of modified coal slag and process the timid except agent of ammonia in waste water.
Background technology
Ammonia, inorganic compound, is gas under normal temperature, the gas of colourless irritant stench, soluble in water, when ammonia is water-soluble, amino molecule becomes a hydration ammonia with hydrone by Hydrogenbond, one hydration ammonia energy fraction is ionized into ammonium ion and hydroxide ion, therefore ammoniacal liquor shows alkalescent, the mucous membrane of energy skin ambustion, eyes, respiratory apparatus, people sucks too much, can cause lung swelling, thus dead.
Due to a large amount of generations of municipal sewage and industrial wastewater, and exhaust emissions, cause environment more and more to worsen.Situation day by day serious, causes control imperative.
Absorption method is to process a kind of important physical chemistry method of harmful in waste water and waste gas and difficult degradation pollutant, and active carbon is the most frequently used sorbing material, but due to lack of material, cost is higher, regeneration is difficult etc., and reason is restricted its application.Take industry and agricultural wastes is raw material, and preparation and exploitation are cheap, to replace active carbon be the important directions that sorbing material is studied to efficient adsorption material.
Summary of the invention
The object of this invention is to provide a kind of modified coal slag and process timid agent, the lack of material existing to overcome prior art, the shortcoming that cost is high removed of ammonia in waste water.For achieving the above object, the technical solution used in the present invention is as follows:
Get the cinder after coal combustion, at 110 ℃, after oven dry activation 1-3h, taking-up is cooling in drier, after pulverizing, crosses 120 mesh sieves, therefrom take out the calcium oxide solution that a certain amount of flyash is placed in certain amount concentration, making sode ash mass ratio is 1:11, in temperature is the thermostat water bath of 60-80 ℃, stirs 1-5h, takes out standing, supernatant liquor inclines, after being filtered dry, repeatedly washing is to neutral, dries for 110 ℃ and activate and obtain this and timidly remove agent.
The present invention has following distinguishing feature:
(1) invent the described timid agent that removes, raw material sources are extensive, cheap;
(2) invent described timid except agent preparation method simple, adsorption rate is high;
(3) invent the described timid agent stable performance that removes, the life-span is long, can preserve for a long time use.
the specific embodiment:
Embodiment 1:
Get the cinder after coal combustion, at 110 ℃, after oven dry activation 1h, taking-up is cooling in drier, after pulverizing, crosses 120 mesh sieves, therefrom take out the calcium oxide solution that 100g flyash is placed in 2mol/L, making sode ash mass ratio is 1:11, in temperature is the thermostat water bath of 60 ℃, stirs 1h, takes out standing, supernatant liquor inclines, after being filtered dry, repeatedly washing is to neutral, dries for 110 ℃ and activate and obtain this and timidly remove agent.
Embodiment 2:
Get the cinder after coal combustion, at 110 ℃, after oven dry activation 2h, taking-up is cooling in drier, after pulverizing, crosses 120 mesh sieves, therefrom take out the calcium oxide solution that 100g flyash is placed in 2mol/L, making sode ash mass ratio is 1:11, in temperature is the thermostat water bath of 70 ℃, stirs 3h, takes out standing, supernatant liquor inclines, after being filtered dry, repeatedly washing is to neutral, dries for 110 ℃ and activate and obtain this and timidly remove agent.
Embodiment 3:
Get the cinder after coal combustion, at 110 ℃, after oven dry activation 1-3h, taking-up is cooling in drier, after pulverizing, crosses 120 mesh sieves, therefrom take out the calcium oxide solution that 100g flyash is placed in 2mol/L, making sode ash mass ratio is 1:11, in temperature is the thermostat water bath of 80 ℃, stirs 5h, takes out standing, supernatant liquor inclines, after being filtered dry, repeatedly washing is to neutral, dries for 110 ℃ and activate and obtain this and timidly remove agent.
Claims (1)
1. the invention discloses a kind of modified coal slag and process the timid except agent of ammonia in waste water, for achieving the above object, the technical solution used in the present invention is as follows:
Get the cinder after coal combustion, at 110 ℃, after oven dry activation 1-3h, taking-up is cooling in drier, after pulverizing, crosses 120 mesh sieves, therefrom take out the calcium oxide solution that a certain amount of flyash is placed in certain amount concentration, making sode ash mass ratio is 1:11, in temperature is the thermostat water bath of 60-80 ℃, stirs 1-5h, takes out standing, supernatant liquor inclines, after being filtered dry, repeatedly washing is to neutral, dries for 110 ℃ and activate and obtain this and timidly remove agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410358636.3A CN104069816A (en) | 2014-07-26 | 2014-07-26 | Removal agent employing modified coal cinders to treat ammonia in wastewater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410358636.3A CN104069816A (en) | 2014-07-26 | 2014-07-26 | Removal agent employing modified coal cinders to treat ammonia in wastewater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104069816A true CN104069816A (en) | 2014-10-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410358636.3A Pending CN104069816A (en) | 2014-07-26 | 2014-07-26 | Removal agent employing modified coal cinders to treat ammonia in wastewater |
Country Status (1)
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| CN (1) | CN104069816A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109046298A (en) * | 2018-08-23 | 2018-12-21 | 浙江大学 | Modified coal ash and its preparation method and application with absorption and catalysis |
-
2014
- 2014-07-26 CN CN201410358636.3A patent/CN104069816A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109046298A (en) * | 2018-08-23 | 2018-12-21 | 浙江大学 | Modified coal ash and its preparation method and application with absorption and catalysis |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20141001 |
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| WD01 | Invention patent application deemed withdrawn after publication |