CN103523845A - Method for adsorption of city domestic sewage by use of coal series kaolinite - Google Patents
Method for adsorption of city domestic sewage by use of coal series kaolinite Download PDFInfo
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- CN103523845A CN103523845A CN201310475218.8A CN201310475218A CN103523845A CN 103523845 A CN103523845 A CN 103523845A CN 201310475218 A CN201310475218 A CN 201310475218A CN 103523845 A CN103523845 A CN 103523845A
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- coal series
- series kaolinite
- adsorption
- domestic sewage
- kaolinite
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- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The invention relates to a sewage treatment method, and discloses a method for adsorption of city domestic sewage by use of coal series kaolinite. The method comprises the following steps: first coal series kaolinite is crushed, then activated by using sulfuric acid, and added to the domestic sewage, and solid-liquid separation is performed after standing, wherein after crushing, the coal series kaolinite is first roasted with the roasting temperature of 600-700 DEG C and the roasting time for 15-30 min. According to the method, by roasting, on the one hand organic carbon and other impurity minerals in the coal series kaolinite are removed, and on the other hand moisture and hydroxyl contained in the coal series kaolinite are removed, so that large number of micropores are formed on coal series kaolinite surface and inside the coal series kaolinite to enable the coal series kaolinite surface to show a honeycomb-shaped structure, the micropores exposed on the surface have a certain amount of adsorption performance to chemical substances in water body and air, while inside pores only have a small adsorption performance due to shielding and blocking of a secondary-outer-layer membrane, the void ratio and specific surface area are improved, and the adsorption rate is improved.
Description
Technical field
The present invention relates to a kind for the treatment of process of sewage.
Background technology
Along with Chinese society and rapid development of economy, environmental problem becomes increasingly conspicuous, and the especially deterioration of Urban Water Environment, has aggravated the shortage of water resources, affects the people's physical and mental health, has become the serious restraining factors of urban sustainable development.In recent years; country and local government pay much attention to the protection of water surrounding; just with unprecedented speed, advancing the construction of city sewage treatment works; there are hundreds of sewage works just in engineering design and building; in this process; the selection of urban sewage treatment process, will be the matter of utmost importance that engineering circles faces.
In municipal effluent, principal pollutant comprise aerobic organism, suspended substance pathogenic agent, nitrogen phosphorus etc.Aerobic organism can reduce water body oxygen level.Make bacteria breed, worsen water quality, cause water body to foul.At present, except organic method in decontaminated water mainly contains physical and chemical adsorption method, chemical method and biological process.Wherein, physical and chemical adsorption method is widely adopted because having investment feature little, that technological operation is easy.The author studies and adopts China to contain abundant coal series kaolin rock as sorbent treatment municipal effluent.The adsorption of coal series kaolin rock mainly contains chemisorption and physical adsorption.Chemisorption is mainly because coal series kaolin rock surface exists a large amount of aluminium, silicon isoreactivity point, can by chemical bond, there is combination with adsorbate, physical adsorption refers between coal series kaolin rock and adsorbate and produces absorption by intermolecular attraction, this effect depends primarily on porousness and the specific surface area of coal series kaolin rock, specific surface area is larger, and adsorption effect is better.
Summary of the invention
The present invention aims to provide a kind of method with Coaseries kaolin absorption city domestic sewage that adsorption effect is higher.
Method with Coaseries kaolin absorption city domestic sewage of the present invention, comprises first Coaseries kaolin is pulverized, and with sulfuric acid activation, is then joined in sanitary sewage standing rear solid-liquid separation; First roasting after wherein pulverizing, during roasting, temperature is 600-700 ℃, roasting time is 15-30 minute.
Preferably, temperature is 700 ℃ during roasting.
Or preferably, roasting time is 30 minutes.
Or preferably, to be crushed to particle diameter be 0.106mm to Coaseries kaolin.
The present invention, by roasting, sloughs organic carbon and other impure minerals in Coaseries kaolin on the one hand; Slough on the other hand contained humidity in Coaseries kaolin, hydroxyl, like this can be at Coaseries kaolin surface and a large amount of micropore of inner formation, make its surface be polynuclear plane, these are exposed to surperficial hole water body and airborne chemical substance are had to certain absorption property, for inner hole because the shielding of time outer membrane, stop and only have very little absorption property, improve its voidage and specific surface area, improved adsorption rate.
Embodiment
Embodiment mono-
After the particle diameter that Coaseries kaolin is crushed to Coaseries kaolin is 0.106mm, the sulfuric acid that is 80% with massfraction in 30 minutes 600 ℃ of roastings activation, is then joined in sanitary sewage standing rear solid-liquid separation.Recording organic adsorption rate in Coaseries kaolin absorption city domestic sewage is 98.962%.
Claims (4)
1. by the method for Coaseries kaolin absorption city domestic sewage, comprise first Coaseries kaolin is pulverized, with sulfuric acid activation, then joined in sanitary sewage standing rear solid-liquid separation; First roasting after it is characterized in that pulverizing, during roasting, temperature is 600-700 ℃, roasting time is 15-30 minute.
2. the method with Coaseries kaolin absorption city domestic sewage as claimed in claim 1, while it is characterized in that roasting, temperature is 700 ℃.
3. the method with Coaseries kaolin absorption city domestic sewage as claimed in claim 1, is characterized in that roasting time is 30 minutes.
4. the method with Coaseries kaolin absorption city domestic sewage as claimed in claim 1, is characterized in that it is 0.106mm that Coaseries kaolin is crushed to particle diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310475218.8A CN103523845A (en) | 2013-10-13 | 2013-10-13 | Method for adsorption of city domestic sewage by use of coal series kaolinite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310475218.8A CN103523845A (en) | 2013-10-13 | 2013-10-13 | Method for adsorption of city domestic sewage by use of coal series kaolinite |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103523845A true CN103523845A (en) | 2014-01-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310475218.8A Pending CN103523845A (en) | 2013-10-13 | 2013-10-13 | Method for adsorption of city domestic sewage by use of coal series kaolinite |
Country Status (1)
| Country | Link |
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| CN (1) | CN103523845A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106335937A (en) * | 2016-08-22 | 2017-01-18 | 陈永桥 | Efficient sewage organic matter remover |
-
2013
- 2013-10-13 CN CN201310475218.8A patent/CN103523845A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106335937A (en) * | 2016-08-22 | 2017-01-18 | 陈永桥 | Efficient sewage organic matter remover |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140122 |
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| WD01 | Invention patent application deemed withdrawn after publication |