CN108178285A - A kind of preparation method for being sustained stable type carbon source filtrate material - Google Patents
A kind of preparation method for being sustained stable type carbon source filtrate material Download PDFInfo
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- CN108178285A CN108178285A CN201711468167.0A CN201711468167A CN108178285A CN 108178285 A CN108178285 A CN 108178285A CN 201711468167 A CN201711468167 A CN 201711468167A CN 108178285 A CN108178285 A CN 108178285A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
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Abstract
The present invention relates to a kind of sustained release stable type carbon source filtrate materials, belong to denitrogenation field of material technology.Technical solution of the present invention is modified processing using attapulgite to salt-soda soil leachate,Make the loose attapulgite of attapulgite crystal structure,It is molded in interlayer and duct and adsorbs carbonate cement,Increase the specific surface area of attapulgite,Improve its absorption property,So as to be effectively improved the nitric efficiency of attapulgite modified material,Improve the denitrogenation effect of carbon source filtrate prepared by technical solution of the present invention,And technical solution of the present invention using cholesterol coating modification attapulgite particle surface and is put into slow release carbon source system,To improve the hydrophobicity of system,Carbon rate is released in control,Slow down the release of carbon source,Technical solution of the present invention uses the crosslinked method of surface layer boric acid simultaneously,To improve ratio of the starch in slow release carbon source,Enhance the stability of starch in the structure,Further carbon rate is released in control,Improve the stability that carbon source is sustained in technical solution of the present invention.
Description
Technical field
The present invention relates to a kind of sustained release stable type carbon source filtrate materials, belong to denitrogenation field of material technology.
Background technology
Carbon source is always the governing factor of traditional biological denitrification process, dosing method, the biology of different material carbon source
Metabolic process differs, thus is also differed using the process operation characteristic of different carbon source.Existing external carbon
Source can generally be divided into two major class：First, the tradition based on the liquid state organics such as glucose, acetic acid, methanol
Carbon source；Second is that based on some solid organic matters, including containing cellulose, starchy material and some can biology drop
Solve the novel carbon source including artificial synthesized high polymer etc..Existing slow release carbon source is generally divided into three categories：With cellulose
Based on natural material, artificial synthesized biodegradable high molecular material and natural material is modified gained it is novel
Material.
There is polylactic acid using more biodegradable polymers in denitrification solid carbon source（PLA）, polycaprolactone
（PCL）And polyhydroxyalkanoate（PHA）Deng.In with slow release carbon source made from starch and biodegradable polymers blending,
Starch is hydroaropic substance, and biodegradable is better than polymer, and the rate of biological utilisation is very fast.Polymer is hydrophobicity object
Matter, biodegradation rate is slower, plays the role of skeletal support in slow release carbon source, and control carbon source releases carbon rate.Due to parent
Aqueous substance is difficult that blending is uniform with lyophobic dust, and addition crosslinking agent and plasticising are often needed in the preparation process of slow release carbon source
Agent, the ratio in entire carbon source shared by starch are often below 50%, and the cost of entire carbon source is difficult to be greatly reduced, simultaneously because
With reference to the problem of blending, material slow-release performance is unstable, causes denitrogenation controlling poor, so preparing a kind of sustained release stable type carbon
Source filtrate material is necessary.
Invention content
The technical problems to be solved by the invention：For in existing denitrogenation carbon source material, hydroaropic substance and hydrophobicity
Substance is difficult the problem of blending uniformly dissipates, and provides a kind of sustained release stable type carbon source filtrate material.
In order to solve the above technical problems, the technical solution adopted by the present invention is：
（1）It takes heavy salinized ground soil and is ground up, sieved, must be sieved soil and in mass ratio 1:10, sieving soil is added to and is gone
It in ionized water, is stirred and stands, filter to get filtrate to obtain modification liquid；
（2）Attapulgite is taken to be placed in Muffle furnace, preheating, heating heats and keeps the temperature calcining, and standing is cooled to room temperature simultaneously
Be ground up, sieved, obtain calcined powder and in parts by weight, weigh respectively 45~50 parts of modification liquids, 6~8 parts of chitosans, 3~5 parts forge
It burns powder and 1~2 part of sodium humate is placed in beaker, be stirred and stand, filter to obtain filter cake, washing, drying can be prepared
Obtain modified particles；
（3）It counts in parts by weight, weighs 55~60 parts of dimethyl sulfoxide (DMSO)s, 3~5 parts of cholesterol, 6~8 parts of glucans and 10 respectively
~15 parts of modified particles are placed in beaker, are stirred and are placed in three-necked flask, in a nitrogen atmosphere heating water bath, are stood cold
But to room temperature, filter cake is filtered to obtain, composite modified object and vacuum freeze drying is obtained, is ground up, sieved, obtains graft modification powder；
（4）It counts in parts by weight, weighs 45~50 parts of deionized waters, 10~15 parts of acetate starch, 3~5 parts of polyethylene respectively
Alcohol and 6~8 parts of graft modification powder are placed in blender, are stirred to obtain slurries and freeze forming, in mass ratio 1~10, will
Shaped granule is added in 5% boric acid solution of mass fraction, stewing process, vacuum freeze drying father's dried object, you can be prepared into
The sustained release stable type carbon source filtrate material.
Step（2）The calcined temperature is 120~150 DEG C.
Step（2）The calcination temperature is 700~800 DEG C.
Step（3）The nitrogen is passed through rate as 45~50mL/min.
Compared with other methods, advantageous effects are the present invention：
（1）Technical solution of the present invention is modified processing using attapulgite to salt-soda soil leachate, makes attapulgite crystal knot
Structure loose attapulgite is molded in interlayer and duct and adsorbs carbonate cement, increases the specific surface area of attapulgite, carry
Its high absorption property so as to be effectively improved the nitric efficiency of attapulgite modified material, improves prepared by technical solution of the present invention
The denitrogenation effect of carbon source filtrate；
（2）Technical solution of the present invention is using cholesterol coating modification attapulgite particle surface and puts into slow release carbon source system
In, to improve the hydrophobicity of system, carbon rate is released in control, slows down the release of carbon source, while technical solution of the present invention uses surface layer
The crosslinked method of boric acid to improve ratio, enhancing starch stability in the structure of the starch in slow release carbon source, is further controlled
System releases carbon rate, improves the stability that carbon source is sustained in technical solution of the present invention.
Specific embodiment
It takes heavy salinized ground soil and ground 200 mesh sieves, must be sieved soil and in mass ratio 1:10, sieving soil is added
It adds in deionized water, be stirred and stand 6~8h, filter to get filtrate to obtain modification liquid；Attapulgite is taken to be placed in Muffle again
In stove, at 120~150 DEG C after 25~30min of pre-burning, then it is warming up at 700~800 DEG C by 5 DEG C/min and calcines 3~5h, it is quiet
It puts and is cooled to room temperature and ground 200 mesh, obtain calcined powder and in parts by weight, weigh 45~50 parts of modification liquids, 6~8 respectively
Part chitosan, 3~5 parts of calcined powders and 1~2 part of sodium humate are placed in beaker, are stirred and are stood 6~8h, filter
Filter cake is simultaneously rinsed 3~5 times with deionized water, and vacuum freeze drying can be prepared into modified particles；It counts, claims respectively in parts by weight
55~60 parts of dimethyl sulfoxide (DMSO)s of amount, 3~5 parts of cholesterol, 6~8 parts of glucans and 10~15 parts of modified particles are placed in beaker, are stirred
It mixes mixing to be placed in three-necked flask, logical nitrogen excludes air and nitrogen controlled to be passed through rate as 45~50mL/min, then in nitrogen
Under gas atmosphere, 3~5h of heating water bath, standing are cooled to room temperature at 75~80 DEG C, filter to obtain filter cake, obtain composite modified object and true
Vacuum freecing-dry, ground 200 mesh sieve, obtains graft modification powder；It counts in parts by weight, weighs 45~50 parts of deionizations respectively
Water, 10~15 parts of acetate starch, 3~5 parts of polyvinyl alcohol and 6~8 parts of graft modification powder are placed in blender, are stirred
It obtains slurries and is placed in freeze forming at -20~-15 DEG C, in mass ratio 1~10, shaped granule is added to 5% boron of mass fraction
In acid solution, after standing 6~8h, vacuum freeze drying father's dried object, you can be prepared into the sustained release stable type carbon source filtrate
Material.
Example 1
It takes heavy salinized ground soil and ground 200 mesh sieves, must be sieved soil and in mass ratio 1:10, sieving soil is added to
It in deionized water, is stirred and stands 6~8h, filter to get filtrate to obtain modification liquid；Attapulgite is taken to be placed in Muffle furnace again,
It at 120~150 DEG C after 25~30min of pre-burning, then is warming up at 700~800 DEG C by 5 DEG C/min and calcines 3~5h, stand cooling
To room temperature and ground 200 mesh, calcined powder and in parts by weight is obtained, weighs 45~50 parts of modification liquids respectively, 6~8 parts of shells gather
Sugar, 3~5 parts of calcined powders and 1~2 part of sodium humate are placed in beaker, are stirred and are stood 6~8h, filter filter cake simultaneously
It is rinsed 3~5 times with deionized water, vacuum freeze drying can be prepared into modified particles；Count in parts by weight, respectively weigh 55~
60 parts of dimethyl sulfoxide (DMSO)s, 3~5 parts of cholesterol, 6~8 parts of glucans and 10~15 parts of modified particles are placed in beaker, are stirred
It is placed in three-necked flask, logical nitrogen excludes air and nitrogen controlled to be passed through rate as 45~50mL/min, then in nitrogen atmosphere
Under, 3~5h of heating water bath, standing are cooled to room temperature at 75~80 DEG C, filter to obtain filter cake, obtain composite modified object and vacuum refrigeration
Dry, ground 200 mesh sieve obtains graft modification powder；Count in parts by weight, respectively weigh 45~50 parts of deionized waters, 10~
15 parts of acetate starch, 3~5 parts of polyvinyl alcohol and 6~8 parts of graft modification powder are placed in blender, are stirred to obtain slurries
Freeze forming at -20~-15 DEG C, in mass ratio 1~10 are placed in, shaped granule is added to 5% boric acid solution of mass fraction
In, after standing 6~8h, vacuum freeze drying father's dried object, you can be prepared into the sustained release stable type carbon source filtrate material.
Example 2
It takes heavy salinized ground soil and ground 200 mesh sieves, must be sieved soil and in mass ratio 1:10, sieving soil is added to
It in deionized water, is stirred and stands 6~8h, filter to get filtrate to obtain modification liquid；Attapulgite is taken to be placed in Muffle furnace again,
It at 120~150 DEG C after 25~30min of pre-burning, then is warming up at 700~800 DEG C by 5 DEG C/min and calcines 3~5h, stand cooling
To room temperature and ground 200 mesh, calcined powder and in parts by weight is obtained, weighs 45~50 parts of modification liquids respectively, 6~8 parts of shells gather
Sugar, 3~5 parts of calcined powders and 1~2 part of sodium humate are placed in beaker, are stirred and are stood 6~8h, filter filter cake simultaneously
It is rinsed 3~5 times with deionized water, vacuum freeze drying can be prepared into modified particles；Count in parts by weight, respectively weigh 55~
60 parts of dimethyl sulfoxide (DMSO)s, 3~5 parts of cholesterol, 6~8 parts of glucans and 10~15 parts of modified particles are placed in beaker, are stirred
It is placed in three-necked flask, logical nitrogen excludes air and nitrogen controlled to be passed through rate as 45~50mL/min, then in nitrogen atmosphere
Under, 3~5h of heating water bath, standing are cooled to room temperature at 75~80 DEG C, filter to obtain filter cake, obtain composite modified object and vacuum refrigeration
Dry, ground 200 mesh sieve obtains graft modification powder；Count in parts by weight, respectively weigh 45~50 parts of deionized waters, 10~
15 parts of acetate starch, 3~5 parts of polyvinyl alcohol and 6~8 parts of graft modification powder are placed in blender, are stirred to obtain slurries
Freeze forming at -20~-15 DEG C, in mass ratio 1~10 are placed in, shaped granule is added to 5% boric acid solution of mass fraction
In, after standing 6~8h, vacuum freeze drying father's dried object, you can be prepared into the sustained release stable type carbon source filtrate material.
Example 3
It takes heavy salinized ground soil and ground 200 mesh sieves, must be sieved soil and in mass ratio 1:10, sieving soil is added to
It in deionized water, is stirred and stands 6~8h, filter to get filtrate to obtain modification liquid；Attapulgite is taken to be placed in Muffle furnace again,
It at 120~150 DEG C after 25~30min of pre-burning, then is warming up at 700~800 DEG C by 5 DEG C/min and calcines 3~5h, stand cooling
To room temperature and ground 200 mesh, calcined powder and in parts by weight is obtained, weighs 45~50 parts of modification liquids respectively, 6~8 parts of shells gather
Sugar, 3~5 parts of calcined powders and 1~2 part of sodium humate are placed in beaker, are stirred and are stood 6~8h, filter filter cake simultaneously
It is rinsed 3~5 times with deionized water, vacuum freeze drying can be prepared into modified particles；Count in parts by weight, respectively weigh 55~
60 parts of dimethyl sulfoxide (DMSO)s, 3~5 parts of cholesterol, 6~8 parts of glucans and 10~15 parts of modified particles are placed in beaker, are stirred
It is placed in three-necked flask, logical nitrogen excludes air and nitrogen controlled to be passed through rate as 45~50mL/min, then in nitrogen atmosphere
Under, 3~5h of heating water bath, standing are cooled to room temperature at 75~80 DEG C, filter to obtain filter cake, obtain composite modified object and vacuum refrigeration
Dry, ground 200 mesh sieve obtains graft modification powder；Count in parts by weight, respectively weigh 45~50 parts of deionized waters, 10~
15 parts of acetate starch, 3~5 parts of polyvinyl alcohol and 6~8 parts of graft modification powder are placed in blender, are stirred to obtain slurries
Freeze forming at -20~-15 DEG C, in mass ratio 1~10 are placed in, shaped granule is added to 5% boric acid solution of mass fraction
In, after standing 6~8h, vacuum freeze drying father's dried object, you can be prepared into the sustained release stable type carbon source filtrate material.
The example 1,2,3 for preparing of the present invention is tested for the property to specific test result is as follows shown in table table 1：
1 performance test table of table
As seen from the above table, the carbon source material that prepared by the present invention has excellent denitrification effect.
Claims (4)
1. a kind of preparation method for being sustained stable type carbon source filtrate material, it is characterised in that specifically preparation process is：
（1）It takes heavy salinized ground soil and is ground up, sieved, must be sieved soil and in mass ratio 1:10, sieving soil is added to and is gone
It in ionized water, is stirred and stands, filter to get filtrate to obtain modification liquid；
（2）Attapulgite is taken to be placed in Muffle furnace, preheating, heating heats and keeps the temperature calcining, and standing is cooled to room temperature simultaneously
Be ground up, sieved, obtain calcined powder and in parts by weight, weigh respectively 45~50 parts of modification liquids, 6~8 parts of chitosans, 3~5 parts forge
It burns powder and 1~2 part of sodium humate is placed in beaker, be stirred and stand, filter to obtain filter cake, washing, drying can be prepared
Obtain modified particles；
（3）It counts in parts by weight, weighs 55~60 parts of dimethyl sulfoxide (DMSO)s, 3~5 parts of cholesterol, 6~8 parts of glucans and 10 respectively
~15 parts of modified particles are placed in beaker, are stirred and are placed in three-necked flask, in a nitrogen atmosphere heating water bath, are stood cold
But to room temperature, filter cake is filtered to obtain, composite modified object and vacuum freeze drying is obtained, is ground up, sieved, obtains graft modification powder；
（4）It counts in parts by weight, weighs 45~50 parts of deionized waters, 10~15 parts of acetate starch, 3~5 parts of polyethylene respectively
Alcohol and 6~8 parts of graft modification powder are placed in blender, are stirred to obtain slurries and freeze forming, in mass ratio 1~10, will
Shaped granule is added in 5% boric acid solution of mass fraction, stewing process, vacuum freeze drying father's dried object, you can be prepared into
The sustained release stable type carbon source filtrate material.
2. a kind of preparation method for being sustained stable type carbon source filtrate material according to claim 1, it is characterised in that：Step
（2）The calcined temperature is 120~150 DEG C.
3. a kind of preparation method for being sustained stable type carbon source filtrate material according to claim 1, it is characterised in that：Step
（2）The calcination temperature is 700~800 DEG C.
4. a kind of preparation method for being sustained stable type carbon source filtrate material according to claim 1, it is characterised in that：Step
（3）The nitrogen is passed through rate as 45~50mL/min.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110902821A (en) * | 2019-12-09 | 2020-03-24 | 宁波首创厨余垃圾处理有限公司 | Solid carbon source suitable for denitrification of high-concentration nitrate-nitrogen sewage and preparation method thereof |
| CN116639796A (en) * | 2022-12-09 | 2023-08-25 | 杭州楠大环保科技有限公司 | Composite solid carbon source filler for low-carbon source wastewater denitrification and preparation method thereof |
-
2017
- 2017-12-29 CN CN201711468167.0A patent/CN108178285A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110902821A (en) * | 2019-12-09 | 2020-03-24 | 宁波首创厨余垃圾处理有限公司 | Solid carbon source suitable for denitrification of high-concentration nitrate-nitrogen sewage and preparation method thereof |
| CN116639796A (en) * | 2022-12-09 | 2023-08-25 | 杭州楠大环保科技有限公司 | Composite solid carbon source filler for low-carbon source wastewater denitrification and preparation method thereof |
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Application publication date: 20180619 |