CN105944659A - Attapulgite used for water treatment and preparation method thereof - Google Patents
Attapulgite used for water treatment and preparation method thereof Download PDFInfo
- Publication number
- CN105944659A CN105944659A CN201610486367.8A CN201610486367A CN105944659A CN 105944659 A CN105944659 A CN 105944659A CN 201610486367 A CN201610486367 A CN 201610486367A CN 105944659 A CN105944659 A CN 105944659A
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- attapulgite
- clay
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
- B01J20/12—Naturally occurring clays or bleaching earth
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
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- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- Water Supply & Treatment (AREA)
- Environmental & Geological Engineering (AREA)
- Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
- Dispersion Chemistry (AREA)
- Geochemistry & Mineralogy (AREA)
- Analytical Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Water Treatment By Sorption (AREA)
Abstract
The invention discloses attapulgite used for water treatment and a preparation method thereof. The attapulgite comprises that following raw materials in parts by weight, 60-90 parts of attapulgite clay and 10-40 parts of admixtures. The preparation method of the attapulgite mainly comprises three processes: chemical modification on the attapulgite clay, chemical modification on the admixtures, and preparation of modified clay. According to the invention, the attapulgite clay is mainly adopted to serve as a main raw material, and the ammonia molecule adsorption capacity of the attapulgite clay is improved after the chemical modification; the additionally adopted admixtures are mostly natural cellulosic waste, such as rice hulls, wheat hulls, sawdust, scraps of paper and the like, and are combined with the modified attapulgite clay after being modified, so as to form an ammonia-nitrogen adsorbing material with enough permeability and strength in ammonia-nitrogen wastewater; the raw materials also have advantages in aspects of source and cost.
Description
Technical field
The invention belongs to water-treatment technology field, particularly relate to a kind of attapulgite processed for water
And preparation method thereof.
Background technology
Body eutrophication (Eutrophication) refers to due to element rows such as substantial amounts of nitrogen, phosphorus, potassium
Enter, the surface water body of update cycle length slow to flow velocity, make the aquatiles such as algae grow in large quantities numerous
Growing, make the speed that Organic substance produces considerably beyond depletion rate, in water body, Organic substance is put aside, and destroys water
The process of raw ecological balance.Ammonia nitrogen is to cause body eutrophication and pollute the important pollution of one of environment
Material.
At present, conventional ammonia nitrogen waste water treatment method have blow-off method, Activated Zeolite Adsorption, membrane separation technique,
Chemical precipitation method, chemical oxidization method, biological denitrificaion method etc..China processes high-concentration ammonia nitrogenous wastewater at present
Main method be blow-off method, it is that ammoniacal nitrogen is converted into free ammonia in the basic conditions, then leads to
Crossing drum such as air makes free ammonia disengaging aqueous phase reach the purpose of removal of ammonia and nitrogen.Being limited in that of blow-off method,
When ammonia nitrogen concentration is less than 500mg/L, ammonia-nitrogen desorption rate is remarkably decreased, if continuing to increase stripping tower number
Amount, then energy consumption and operating cost are multiplied.
For the ammonia nitrogen waste water of middle low concentration, Microbial denitrogenation method nitric efficiency is grown by nitrobacteria
Breed and affected very greatly by the factor such as temperature and environment, and the capital of its floor space and early stage is thrown
Enter the highest.Dispensing expense and the longtime running continuously of chemical precipitation method are relatively costly, deal with improperly and also may be used
Secondary pollution problem can occur.Zeolite is a kind of cheap natural minerals, utilizes it to belong to the absorption of ammonia
Property process ammonia nitrogen waste water be the domestic a kind of method proposed in recent years.But the ammonia that shortcoming is natural zeolite divides
Sub-exchange capacity is little, and therefore the operational efficiency of exchange adsorption equipment is relatively low.Ammonia is divided by attapulgite clay
Son also has a higher adsorption capacity, but it is agglomerating to be prone to when clay meets water to bond, it is impossible to as adsorption tower
Filler.
Summary of the invention
It is an object of the invention to provide a kind of attapulgite for water process and preparation method thereof, logical
Cross employing attapulgite clay as primary raw material, add a certain amount of filler as adjuvant, preparation
Technique is simple, and low cost is practical, has stronger absorbability to amino molecule, solves existing
The reluctant problem of amino molecule in some body eutrophications.
For solving above-mentioned technical problem, the present invention is achieved by the following technical solutions:
The present invention is a kind of attapulgite processed for water, counts by weight, including: attapulgite
Stone clay 60 parts～90 parts, mixes filler 10 parts～40 parts；
This attapulgite is prepared through the following steps: attapulgite clay is crushed to graininess by (1)；
Then being poured into equipped with in the reactor of sulfuric acid solution, addition, to be totally submerged as degree, stirs
After mix homogeneously, filter after soaking certain time at normal temperatures；Take out much filtrate and be washed to pH value and be
Neutral；Then by the clay after washing and containing Cu2+Solution mixing, stir to fully reaction；(2)
To mix adds in hydrochloric acid solution after filler is pulverized, and hydrochloric acid addition is to be totally submerged as degree, and stirring mixes
Uniformly, filter after soaking certain time at normal temperatures；Till much filtrate being washed to when pH value is neutral；
(3) clay processed through step (1) is all put into mix with the filler of mixing processed through step (2)
In device, after stirring certain time, take out and proceed in roaster, the most airtight roasting one
After fixing time, i.e. prepare finished product.
Further, count by weight, including: attapulgite clay 75 parts, mix filler 25 parts.
The preparation method of a kind of attapulgite processed for water, comprises the following steps:
Step (1), carries out chemical modification by attapulgite clay: be crushed to carefully by attapulgite clay
Degree is 150 mesh～the granule of 190 mesh；Then it is poured into equipped with the sulphuric acid that concentration is 20%～85%
Reactor in, addition be totally submerged for degree, after being uniformly mixed, at normal temperatures soak 11h～
Filter after 15h；Take out much filtrate and be washed to pH value for neutrality；Then will washing after clay with
Concentration is the Cu of 0.2mol/L～1.5mol/L2+Solution mixes, stirring reaction 4h～6h；
Step (2), will mix filler and carry out chemical modification: will be crushed to fineness will be 200 mesh～300 purposes
Mix in the hydrochloric acid solution that filler and mass percent concentration are 25%～75%, addition be totally submerged for
Degree, is uniformly mixed, and filters after soaking 11h～13h at normal temperatures；Much filtrate is washed to PH
Till when value is neutral；
Step (3), prepares modified clay: the modified clay that will process through step (1) with through step (2)
The modification processed is mixed filler and is all put in blender, and wherein, the proportion mixing filler is 10 parts～40 parts,
After stirring 65min～75min under the rotating speed of 3600r/min～3700r/min, take out, and turn
Enter in roaster, at 400 DEG C～500 DEG C after airtight roasting 5h～9h, i.e. prepare finished product.
Further, described attapulgite clay is a kind of crystalloid water with attapulgite as key component
Close zeopan clay mineral, there is a layer chain structure feature, the wherein chemical molecular of attapulgite
Formula is: Mg5Si8O20(OH)2(OH2)4·4H2O。
Further, in described step (1), the Cu used by attapulgite clay chemical modification2+Solution
For any one of copper chloride solution or copper-bath or both combination solutions.
Further, in described step (2), mix filler used by filler chemical modification and include rice husk, little
Wheat husk, wood flour, paper scrap, corn cob.
The method have the advantages that
The present invention mainly uses attapulgite clay as primary raw material, after chemical modification, improves
Its absorbability to amino molecule；The filler of mixing additionally used is mainly natural cellulosic garbage,
Such as rice husk, wheat shell, wood flour, paper scrap etc., be combined with modified attapulgite clay after modified, system
The ammonia nitrogen absorption material of enough permeabilitys and intensity must be possessed in ammonia nitrogen waste water；Raw material is in source and becomes
Present aspect also possesses advantage.
Certainly, the arbitrary product implementing the present invention it is not absolutely required to reach all the above simultaneously
Advantage.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is further illustrated, but the scope of application claims is not
It is confined to the scope that following embodiment represents.
Embodiment 1
(1) weigh 1000g attapulgite clay, cross 150 mesh sieves.Then it is poured into equipped with 1L
Concentration is in the reactor of the sulphuric acid of 20%, takes out after stirring, after soaking 11h at normal temperatures
Filtering, the clay after acidifying is also washed with water to till pH value is neutrality by centrifugation, standby；So
After in the reactor, be the CuSO of 0.2mol/L by acid-treated clay 100g and 500mL concentration4
Solution mixes, and low rate mixing reacts, and filters and separate after stirring reaction 4h, and solid much filtrate is standby；
(2) wood flour after pulverizing crosses 200 mesh sieves, weighs 60g in container, is subsequently adding 180g
Mass percent concentration is the hydrochloric acid solution of 25%, soaks 11h, take out acidifying wood flour mistake under room temperature
After filter standby；
(3) above-mentioned chemical modification of day 75g and modified wood chips 25g is joined in blender,
Take out after stirring 65min under 3600r/min and be transferred to roaster, airtight roasting 5h at 400 DEG C
I.e. obtain product.
Embodiment 2
(1) weigh 1000g attapulgite clay, cross 170 mesh sieves.Then it is poured into equipped with 1L
Concentration is in the reactor of the sulphuric acid of 55%, takes out after stirring, after soaking 13h at normal temperatures
Filtering, the clay after acidifying is also washed with water to till pH value is neutrality by centrifugation, standby；So
After in the reactor, be the CuSO of 1.1mol/L by acid-treated clay 100g and 500mL concentration4
Solution mixes, and low rate mixing filters after reacting 5 hours and separates, and solid much filtrate is standby；
(2) wood flour after pulverizing crosses 250 mesh sieves, weighs 60g in container, is subsequently adding 180g
Mass percent concentration is the hydrochloric acid solution of 55%, soaks 12h, take out acidifying wood flour mistake under room temperature
After filter standby；
(3) above-mentioned chemical modification of day 75g and modified wood chips 25g is joined in blender,
Take out after stirring 70min under 3650r/min and be transferred to roaster, airtight roasting 7h at 450 DEG C
I.e. obtain product.
Embodiment 3
(1) weigh 1000g attapulgite clay, cross 190 mesh sieves.Then it is poured into equipped with 1L
Concentration is in the reactor of the sulphuric acid of 85%, takes out after stirring, after soaking 15h at normal temperatures
Filtering, the clay after acidifying is also washed with water to till pH value is neutrality by centrifugation, standby；So
After in the reactor, be the CuSO of 1.5mol/L by acid-treated clay 100g and 500mL concentration4
Solution mixes, and low rate mixing filters after reacting 6 hours and separates, and solid much filtrate is standby；
(2) wood flour after pulverizing crosses 300 mesh sieves, weighs 60g in container, is subsequently adding 180g
Mass percent concentration is the hydrochloric acid solution of 75%, soaks 13h, take out acidifying wood flour mistake under room temperature
After filter standby；
(3) above-mentioned chemical modification of day 75g and modified wood chips 25g is joined in blender,
Take out after stirring 75min under 3700r/min and be transferred to roaster, airtight roasting 9h at 500 DEG C
I.e. obtain product.
It is last it should be noted that present invention disclosed above preferred embodiment is only intended to help to illustrate
The present invention.Preferred embodiment does not has all of details of detailed descriptionthe, is not intended to this invention yet and is only institute
The detailed description of the invention stated.Obviously, according to the content of this specification, can make many modifications and variations.
These embodiments are chosen and specifically described to this specification, be in order to preferably explain the principle of the present invention and
Actual application, so that skilled artisan can be best understood by and utilize the present invention.This
Invention is only limited by claims and four corner thereof and equivalent.
Claims (6)
1. the attapulgite processed for water, it is characterised in that: count by weight, including:
Attapulgite clay 60 parts～90 parts, mixes filler 10 parts～40 parts；
This attapulgite is prepared through the following steps: attapulgite clay is crushed to graininess by (1)；
Then being poured into equipped with in the reactor of sulfuric acid solution, addition, to be totally submerged as degree, stirs
After mix homogeneously, filter after soaking certain time at normal temperatures；Take out much filtrate and be washed to pH value and be
Neutral；Then by the clay after washing and containing Cu2+Solution mixing, stir to fully reaction；(2)
To mix adds in hydrochloric acid solution after filler is pulverized, and hydrochloric acid addition is to be totally submerged as degree, and stirring mixes
Uniformly, filter after soaking certain time at normal temperatures；Till much filtrate being washed to when pH value is neutral；
(3) clay processed through step (1) is all put into mix with the filler of mixing processed through step (2)
In device, after stirring certain time, take out and proceed in roaster, the most airtight roasting one
After fixing time, i.e. prepare finished product.
A kind of attapulgite processed for water the most according to claim 1, it is characterised in that:
Count by weight, including: attapulgite clay 75 parts, mix filler 25 parts.
3. a preparation method for the attapulgite processed for water as claimed in claim 1, it is special
Levy and be: the method comprises the following steps:
Step (1), carries out chemical modification by attapulgite clay: be crushed to carefully by attapulgite clay
Degree is 150 mesh～the granule of 190 mesh；Then it is poured into equipped with the sulphuric acid that concentration is 20%～85%
Reactor in, addition be totally submerged for degree, after being uniformly mixed, at normal temperatures soak 11h～
Filter after 15h；Take out much filtrate and be washed to pH value for neutrality；Then will washing after clay with
Concentration is the Cu of 0.2mol/L～1.5mol/L2+Solution mixes, stirring reaction 4h～6h；
Step (2), will mix filler and carry out chemical modification: will be crushed to fineness will be 200 mesh～300 purposes
Mix in the hydrochloric acid solution that filler and mass percent concentration are 25%～75%, addition be totally submerged for
Degree, is uniformly mixed, and filters after soaking 11h～13h at normal temperatures；Much filtrate is washed to PH
Till when value is neutral；
Step (3), prepares modified clay: the modified clay that will process through step (1) with through step (2)
The modification processed is mixed filler and is all put in blender, and wherein, the proportion mixing filler is 10 parts～40 parts,
Take out after stirring 65min～75min under the rotating speed of 3600r/min～3700r/min, and proceed to
In roaster, at 400 DEG C～500 DEG C after airtight roasting 5h～9h, i.e. prepare finished product.
The preparation method of a kind of attapulgite processed for water the most according to claim 3, its
It is characterised by: described attapulgite clay is a kind of crystalloid hydrous magnesium with attapulgite as key component
Aluminosilicate clays mineral, have a layer chain structure feature, and wherein the chemical molecular formula of attapulgite is:
Mg5Si8O20(OH)2(OH2)4·4H2O。
The preparation method of a kind of attapulgite processed for water the most according to claim 3, its
It is characterised by: in described step (1), the Cu used by attapulgite clay chemical modification2+Solution is chlorine
Change any one of copper solution or copper-bath or both combination solutions.
The preparation method of a kind of attapulgite processed for water the most according to claim 3, its
Be characterised by: in described step (2), mix filler used by filler chemical modification include rice husk, wheat shell,
Wood flour, paper scrap, corn cob.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610486367.8A CN105944659A (en) | 2016-06-27 | 2016-06-27 | Attapulgite used for water treatment and preparation method thereof |
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| CN201610486367.8A CN105944659A (en) | 2016-06-27 | 2016-06-27 | Attapulgite used for water treatment and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106745607A (en) * | 2016-12-27 | 2017-05-31 | 郑州诚合信息技术有限公司 | A kind of livestock breeding wastewater treatment sewage flocculant and preparation method thereof |
| CN108557976A (en) * | 2018-04-20 | 2018-09-21 | 东莞市顶盛环保科技有限公司 | A kind of high-efficiency sewage ammonia nitrogen removal agent |
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|---|---|---|---|---|
| CN1648064A (en) * | 2004-12-25 | 2005-08-03 | 李玉堂 | Water purifier for removing fluorine and arsenic and preparing method |
| WO2011139566A2 (en) * | 2010-04-28 | 2011-11-10 | Baker Hughes Incorporated | Method for cleaning filter separation systems |
| CN103301803A (en) * | 2013-06-27 | 2013-09-18 | 武汉科梦环境工程有限公司 | Preparation method of attapulgite-modified clay for ammonia-nitrogen wastewater treatment |
-
2016
- 2016-06-27 CN CN201610486367.8A patent/CN105944659A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1648064A (en) * | 2004-12-25 | 2005-08-03 | 李玉堂 | Water purifier for removing fluorine and arsenic and preparing method |
| WO2011139566A2 (en) * | 2010-04-28 | 2011-11-10 | Baker Hughes Incorporated | Method for cleaning filter separation systems |
| CN103301803A (en) * | 2013-06-27 | 2013-09-18 | 武汉科梦环境工程有限公司 | Preparation method of attapulgite-modified clay for ammonia-nitrogen wastewater treatment |
Non-Patent Citations (1)
| Title |
|---|
| 钱慧丽主编: "《预拌砂浆应用技术》", 30 April 2015, 中国建材工业出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106745607A (en) * | 2016-12-27 | 2017-05-31 | 郑州诚合信息技术有限公司 | A kind of livestock breeding wastewater treatment sewage flocculant and preparation method thereof |
| CN108557976A (en) * | 2018-04-20 | 2018-09-21 | 东莞市顶盛环保科技有限公司 | A kind of high-efficiency sewage ammonia nitrogen removal agent |
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Application publication date: 20160921 |