CN101497021A - Baking-free type porous composite zeolite filter material and preparation method thereof - Google Patents
Baking-free type porous composite zeolite filter material and preparation method thereof Download PDFInfo
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- CN101497021A CN101497021A CNA2009100139121A CN200910013912A CN101497021A CN 101497021 A CN101497021 A CN 101497021A CN A2009100139121 A CNA2009100139121 A CN A2009100139121A CN 200910013912 A CN200910013912 A CN 200910013912A CN 101497021 A CN101497021 A CN 101497021A
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- filter material
- free type
- type porous
- baking
- porous composite
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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Abstract
The invention provides a burning free type porous compound zeolite filter material. Natural zeolite activated at a high temperature, a bonding agent and a pore forming agent are used as raw materials, and evenly mixed according to a certain ratio, and sprayed with water to form a sphere, during curing, proper temperature, humidity and curing time are kept, and then the burning free type porous compound zeolite filter material is obtained. The surface of the burning free type porous compound zeolite filter material is rough and porous, thereby facilitating the attached growth of microbes in a biological filter, and the filter material has excellent adsorptivity and regenerability, and when being used as a filling material in an aeration biological filter to treat sewage, the filter material can achieve extremely good treating effect. The burning free type porous compound zeolite filter material and the method for preparing the same provided by the invention have the advantages of unnecessary sintering process and no consumption of energy such as coal, electricity and the like, and meet the present national policy on environmental protection of saving energy and reducing emission.
Description
Technical field
The present invention relates to a kind of biofilter filtrate, especially a kind of baking-free type porous composite zeolite filter material and preparation method thereof.
Background technology
At present natural zeolite has been widely used in the middle of the water treatment field as the filtrate of BAF.But because the natural zeolite internal cavity is little, channel connectivity is poor, makes its application at water treatment field have certain limitation.
Summary of the invention
For overcoming the deficiency of natural zeolite filtrate self, the invention provides a kind of is the baking-free type porous composite zeolite filter material and preparation method thereof of primary raw material with the natural zeolite powder.
A kind of baking-free type porous composite zeolite filter material according to weight percent meter, comprises natural zeolite 50-85%, binding agent 10-30%, pore former 5-20%.
Described binding agent can be a kind of in gypsum, the bentonite.
Described pore former can be sodium sulphate (Na
2SO
4), calcium sulfate (CaSO
4), soluble starch or calcium chloride (CaCl
2) in a kind of.
The preparation method of described baking-free type porous composite zeolite filter material comprises the steps:
(1) natural zeolite cools off behind high-temperature activation, and ball milling gets zeolite powder;
(2) above-mentioned steps gained zeolite powder is mixed stirring with binding agent, must expect powder;
(3) above-mentioned steps gained material powder is evenly mixed with pore former, spread the water moulding, get composition;
(4) composition of above-mentioned steps preparation is put into curing box and carry out maintenance, curing temperature is 18-25 ℃, and humidity is 90-99%, and curing time is 3-10 days, take out the semi-finished product filtrate;
(5) do not come off to there being residue with deionized water cyclic washing above-mentioned steps gained semi-finished product filtrate, place 90-105 ℃ of down oven dry, take out the finished product filtrate;
Raw material in the above-mentioned steps are according to weight percent meter, and natural zeolite accounts for that 50-85%, binding agent account for 10-30%, pore former accounts for 5-20%.
Described activation is a high-temperature activation, and the temperature range of activation can be 250 ℃-700 ℃.
By the baking-free type porous composite zeolite filter material of above-mentioned preparation method's preparation, getting environmentally friendly natural zeolite is raw material, does not need sintering process, and production cost is low.Its internal structure water of natural zeolite behind high-temperature activation and organic impurities are overflowed by calcination, make it form loose porous spongelike structure, can increase substantially its absorption property.Contain multiple basic anhydride (CaO, Al in the natural zeolite
2O
3Deng), be made into filtrate after, after basic species wherein and pore former mix, can produce good chemical reaction, make particle surface form porous state, thereby pollutants in waste water matter had preferably adsorb, the removal effect.This baking-free type porous composite zeolite filter material can organically combine the absorption property of zeolite and the biomembrane metabolic function of BAF, increases substantially effluent quality.
Baking-free type porous composite zeolite filter material provided by the invention and preparation method thereof does not need sintering process, does not consume coal, electric power equal energy source, meets the environmental protection policy of current national energy-saving and emission-reduction.The baking-free type porous composite zeolite filter material hole of preparation is many, hole is big, has overcome that existing natural zeolite filtrate hole is little, passage is easily blocked shortcomings such as adsorption capacity difference by impurity.And its stable chemical performance, can adopt physics, chemical method to make its repeated regeneration, the conserve water processing cost is a kind of new and effective biofilter filtrate.
The specific embodiment
Embodiment one:
Get 85% natural zeolite behind 250 ℃ of high-temperature activations, cooling, ball milling, take out, mix stirring, add 5% soluble starch again with 10% gypsum, stir, spread the water moulding, put into curing box, keep 18 ℃ of temperature, humidity 90%, maintenance were taken out after 3 days, spent deionised water and did not come off to there being residue, place 90 ℃ of oven dry down, get baking-free type porous composite zeolite filter material.
Embodiment two:
Get 75% natural zeolite behind 450 ℃ of high-temperature activations, cooling, ball milling takes out, and mixes stirring with 10% gypsum, adds 15% Na again
2SO
4, stir, spread the water moulding, put into curing box, keep 20 ℃ of temperature, humidity 95%, maintenance was taken out after 5 days, spent deionised water and did not come off to there being residue, placed 95 ℃ of oven dry down, got baking-free type porous composite zeolite filter material.
Embodiment three:
Get 60% natural zeolite behind 550 ℃ of high-temperature activations, cooling, ball milling takes out, and mixes stirring with 22% bentonite, adds 18% CaCl again
2, stir, spread the water moulding, put into curing box, keep 22 ℃ of temperature, humidity 97%, maintenance was taken out after 8 days, spent deionised water and did not come off to there being residue, placed 100 ℃ of oven dry down, got baking-free type porous composite zeolite filter material.
Embodiment four:
Get 50% natural zeolite behind 700 ℃ of high-temperature activations, cooling, ball milling takes out, and mixes stirring with 30% bentonite, adds 20% CaSO again
4, stir, spread the water moulding, put into curing box, keep 25 ℃ of temperature, humidity 99%, maintenance was taken out after 10 days, spent deionised water and did not come off to there being residue, placed 105 ℃ of oven dry down, got baking-free type porous composite zeolite filter material.
Content all is weight percentage described in the foregoing description one to four.
Claims (9)
1, a kind of baking-free type porous composite zeolite filter material is characterized in that: according to weight percent meter, comprise natural zeolite 50-85%, binding agent 10-30%, pore former 5-20%.
2, baking-free type porous composite zeolite filter material as claimed in claim 1 is characterized in that: binding agent can be a kind of in gypsum, the bentonite.
3, baking-free type porous composite zeolite filter material as claimed in claim 1 is characterized in that: pore former can be sodium sulphate (Na
2SO
4), calcium sulfate (CaSO
4), soluble starch or calcium chloride (CaCl
2) in a kind of.
4, a kind of baking-free type porous composite zeolite filter material is characterized in that: adopt the method for 250-700 ℃ of high temperature sintering to carry out activation processing.
5, the activation method of baking-free type porous composite zeolite filter material as claimed in claim 4 is characterized in that: activation temperature can be controlled in the 250-700 ℃ of scope.
6, a kind of preparation method of baking-free type porous composite zeolite filter material is characterized in that, comprises the steps:
(1) natural zeolite cools off behind high-temperature activation, and ball milling gets zeolite powder;
(2) above-mentioned steps gained zeolite powder mixes stirring with binding agent, must expect powder;
(3) above-mentioned steps gained material powder evenly mixes with pore former, spreads the water moulding, gets composition;
(4) composition of above-mentioned steps preparation is put into curing box and carry out maintenance, curing temperature is 18-25 ℃, and humidity is 90-99%, and curing time is 3-10 days, take out the semi-finished product filtrate;
(5) do not come off to there being residue with deionized water cyclic washing above-mentioned steps gained semi-finished product filtrate, place 90-105 ℃ of down oven dry, take out the finished product filtrate;
Raw material in the above-mentioned steps are according to weight percent meter, and natural zeolite accounts for that 50-85%, binding agent account for 10-30%, pore former accounts for 5-20%.
7, the preparation method of baking-free type porous composite zeolite filter material as claimed in claim 6 is characterized in that: described binding agent can be a kind of in gypsum, the bentonite.
8, the preparation method of baking-free type porous composite zeolite filter material as claimed in claim 6 is characterized in that: described pore former can be sodium sulphate (Na
2SO
4), calcium sulfate (CaSO
4), soluble starch or calcium chloride (CaCl
2) in a kind of.
9, the preparation method of baking-free type porous composite zeolite filter material as claimed in claim 6 is characterized in that, described activation is a high-temperature activation, and the temperature range of activation can be 250 ℃-700 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100139121A CN101497021A (en) | 2009-01-12 | 2009-01-12 | Baking-free type porous composite zeolite filter material and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100139121A CN101497021A (en) | 2009-01-12 | 2009-01-12 | Baking-free type porous composite zeolite filter material and preparation method thereof |
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|---|---|
| CN101497021A true CN101497021A (en) | 2009-08-05 |
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ID=40944418
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| CNA2009100139121A Pending CN101497021A (en) | 2009-01-12 | 2009-01-12 | Baking-free type porous composite zeolite filter material and preparation method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101798140A (en) * | 2010-03-26 | 2010-08-11 | 河海大学 | Filter material for biological aerated filter and preparation method thereof |
| CN101962221A (en) * | 2010-09-01 | 2011-02-02 | 沈阳理工大学 | Method for preparing biological filter material used for sewage treatment by taking zeolite as raw material |
| CN102259974A (en) * | 2011-05-24 | 2011-11-30 | 合肥工业大学 | Magnetite-zeolite magnetic biological carrier material, as well as preparation method and application method thereof |
| CN102463002A (en) * | 2011-10-20 | 2012-05-23 | 常州亚环环保科技有限公司 | Structural filter core for removing benzene from drinking water and preparation method thereof |
| CN112500189A (en) * | 2020-12-21 | 2021-03-16 | 苏州中材非金属矿工业设计研究院有限公司 | Artificial wetland filler and preparation method and application thereof |
| CN115678108A (en) * | 2022-09-30 | 2023-02-03 | 贺州学院 | Pore-forming agent and application thereof, breathable film and preparation method thereof |
-
2009
- 2009-01-12 CN CNA2009100139121A patent/CN101497021A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101798140A (en) * | 2010-03-26 | 2010-08-11 | 河海大学 | Filter material for biological aerated filter and preparation method thereof |
| CN101962221A (en) * | 2010-09-01 | 2011-02-02 | 沈阳理工大学 | Method for preparing biological filter material used for sewage treatment by taking zeolite as raw material |
| CN102259974A (en) * | 2011-05-24 | 2011-11-30 | 合肥工业大学 | Magnetite-zeolite magnetic biological carrier material, as well as preparation method and application method thereof |
| CN102463002A (en) * | 2011-10-20 | 2012-05-23 | 常州亚环环保科技有限公司 | Structural filter core for removing benzene from drinking water and preparation method thereof |
| CN112500189A (en) * | 2020-12-21 | 2021-03-16 | 苏州中材非金属矿工业设计研究院有限公司 | Artificial wetland filler and preparation method and application thereof |
| CN115678108A (en) * | 2022-09-30 | 2023-02-03 | 贺州学院 | Pore-forming agent and application thereof, breathable film and preparation method thereof |
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Open date: 20090805 |