CN108675421A - Application of the carboxymethyl cellulose graphene oxide flocculant aid in sewage disposal - Google Patents
Application of the carboxymethyl cellulose graphene oxide flocculant aid in sewage disposal Download PDFInfo
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- CN108675421A CN108675421A CN201810563309.XA CN201810563309A CN108675421A CN 108675421 A CN108675421 A CN 108675421A CN 201810563309 A CN201810563309 A CN 201810563309A CN 108675421 A CN108675421 A CN 108675421A
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- graphene oxide
- carboxymethyl cellulose
- flocculant
- microcapsules
- wall material
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
-
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
-
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5263—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using natural chemical compounds
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Emulsifying, Dispersing, Foam-Producing Or Wetting Agents (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
The present invention provides a kind of application of carboxymethyl cellulose graphene oxide flocculant aid in sewage disposal, the carboxymethyl cellulose graphene oxide flocculant aid includes following component in parts by weight：75 ~ 90 parts of carboxymethyl cellulose graphene oxide microcapsules, 10 ~ 25 parts of dispersant；The carboxymethyl cellulose graphene oxide microcapsules include core material and wrap up the wall material of the core material, and the mass ratio of the wall material and core material is 0.5:1~2:1；The core material is graphene oxide, and the wall material is carboxymethyl cellulose.Carboxymethyl cellulose graphene oxide flocculant aid of the present invention can improve the purifying rate of unit flocculant while improving flocculation efficiency, maintain or reduce the dosage of flocculant.
Description
Technical field
The present invention relates to the technical fields of water process water purification agent, more particularly, to carboxymethyl cellulose graphene oxide
Application of the flocculant aid in sewage disposal.
Background technology
Flocculation process is indispensable key link in sewage treatment process.During sewage disposal, often need
Flocculant is added, so that the suspended particulates in sewage is gathered and becomes larger to form floc sedimentation, to make the coagulation of particle.Flocculated principle is such as
Under：Positive (negative) electrical group is carried in flocculant, can neutralize in water and electrically be difficult to the particle detached with negative (just), is reduced
Its potential, and using aggregation property these particles are concentrated, cotton-shaped coagulating sedimentation is formed, and pass through physics or chemical method
It separates.
Conductive agent is added in the meeting having in existing flocculant, and its object is to, to electron transmission, make to flocculate by conductive agent
The charge generated in journey is transmitted to floccule surface by conductive agent, and the charge inside floccule can be also transmitted to by conductive agent
Floccule surface, it is easier to which the balance for breaking sewage system improves flocculated speed (flocculation efficiency).But, it has been found that
Partial flocculation efficiency around flocculant containing conductive agent is to be improved, but the flocculating and purifying of entire sewage disposal system
Rate (i.e. removal rate) is not improved but, or even is declined so that is needed to add more flocculants and be can be only achieved original wadding
Solidifying purifying rate, increases economic cost, loses more than gain instead in this way.
Invention content
The present invention is to solve the problems, such as described in the above-mentioned prior art, provides a kind of carboxymethyl cellulose graphene oxide flocculation
Application of the auxiliary agent in sewage disposal, the carboxymethyl cellulose graphene oxide flocculant aid can improve flocculation efficiency
Meanwhile the purifying rate (removal rate) of unit flocculant is improved, maintain or reduce the dosage of flocculant.
In order to solve the above technical problems, the technical solution adopted by the present invention is：
Application of the carboxymethyl cellulose graphene oxide flocculant aid in sewage disposal, the carboxymethyl cellulose oxidation
Graphene flocculant aid includes following component in parts by weight：Carboxymethyl cellulose graphene oxide microcapsules 75~90
Part, 10~25 parts of dispersant；The carboxymethyl cellulose graphene oxide microcapsules include core material and wrap up the wall of the core material
The mass ratio of material, the wall material and core material is 0.5:1~2:1；The core material is graphene oxide, and the wall material is that carboxymethyl is fine
Dimension element.
Further, the application is to improve the flocculation efficiency of flocculant in sewage disposal.Specifically, the application is to incite somebody to action
The carboxymethyl cellulose graphene oxide flocculant aid is added to flocculant in sewage, is stirred, and is flocculated, sedimentation.The wadding
The mass ratio of solidifying agent and carboxymethyl cellulose graphene oxide flocculant aid is 8~10：1, preferably 9:1.
Present inventor studies the conductive agent of existing flocculant, is found that while that conductive agent is played in flocculation process
Charge transfer acts on, and improves flocculated speed, but it also accelerates the charge consumption of flocculant simultaneously, flocculant is having enough time expanding
Dissipate before, charge has just been consumed, flocculant can only useful effect in part, this has also been resulted in around flocculant
Partial flocculation it is efficient, but the not high reason of flocculating and purifying rate (i.e. removal rate) of entire sewage disposal system.
In this regard, the present invention is improved the conductive agent of existing flocculant, graphene oxide is chosen as conductive agent, and will
Graphene oxide makes microcapsules, is combined together with dispersant, in flocculation process, the carboxymethyl cellulose graphene oxide
Microcapsules can disperse rapidly, graphene oxide meeting during dispersion in carboxymethyl cellulose graphene oxide microcapsules
It is gradually discharged, plays the role of charge transfer to flocculation process, improve flocculated speed.Compared with existing conductive agent, due to
Herein described carboxymethyl cellulose graphene oxide microcapsules are gradually to discharge, and the charge of flocculant can be consumed totally
It is just uniformly dispersed together with graphene oxide before, therefore flocculated speed and whole flocculating and purifying can be improved
Rate.
In order to reach said effect, the dispersion of graphene oxide and release opportunity are crucial, in the present invention, it is preferred to water
Wall material of the carboxymethyl cellulose of dissolubility as cladding graphene oxide, and the ratio by designing wall material and core material so that carboxylic
Graphene oxide in methylcellulose graphene oxide microcapsules can effectively play a role in flocculation process.
In order to enable carboxymethyl cellulose graphene oxide microcapsules efficiently and effectively to disperse, carboxymethyl of the present invention is fine
It also includes dispersant to tie up plain graphene oxide flocculant aid, and studies and obtain carboxymethyl cellulose graphene oxide microcapsules and divide
The proportioning of powder.Preferably, the carboxymethyl cellulose graphene oxide flocculant aid include it is following in parts by weight
Component：85 parts of carboxymethyl cellulose graphene oxide microcapsules, 15 parts of dispersant.
Preferably, the dispersant is one or more of polyvinyl alcohol, polyethylene, pyrrolidones.
It is highly preferred that the dispersant is the mixture of polyvinyl alcohol and pyrrolidones；The polyvinyl alcohol and pyrrolidines
The mass ratio of ketone is 1:2.
The release opportunity of graphene oxide is the key that the present invention, very much not with wall material in existing microcapsules and the ratio of core material
Identical, the present invention show that the zone of reasonableness of the mass ratio of wall material and core material is 0.5 by research:1~2:1.Preferably, the wall
The mass ratio of material and core material is 1:1.
Preferably, the preparation method of the carboxymethyl cellulose graphene oxide microcapsules includes the following steps：
S1. graphene oxide is placed in ultrasonic disperse in pure water, obtains graphene oxide dispersion；
S2. wall material is added to the graphene oxide dispersion, temperature is 30~45 DEG C, pressure is 0.5~2MPa's
Under inert atmosphere, 30~60min is stirred, mixing speed is 800~1500r/min；
S3. after stirring terminates, solid product is collected in filtering, is freeze-dried to get carboxymethyl cellulose graphene oxide
Microcapsules.
Further, in step S1, the ratio of the graphene oxide and pure water is 0.1~0.3g:10ml, preferably
0.1g:10ml。
Further, in step S2, the wall material is made into the solution that mass fraction is 30~40wt%, is added into institute
State graphene oxide dispersion.
Preferably, the grain size of the graphene oxide is 300~1200nm, preferably 500~800nm.Preferably, described
Inert gas is nitrogen.
Preferably, in step S2, wall material is added to the graphene oxide dispersion, temperature is 35 DEG C, pressure is
Under the inert atmosphere of 1MPa, 30min, mixing speed 800r/min are stirred.
The present invention studies the reaction condition of microcapsule coated process, finds the inert gas environment in certain pressure
Under, the surface of graphene oxide can first coat a thin layer of air film, and wall material is coated on outside again, effectively prevent wall material stifled in this way
The aperture for filling in graphene oxide composite material, and after freeze-drying, in carboxymethyl cellulose graphene oxide microcapsules wall material with
Certain gap is still stayed between graphene oxide, is contacted convenient for the release of graphene oxide and with flocculant.
Further, the preparation method of the carboxymethyl cellulose graphene oxide flocculant aid includes the following steps：
S1. carboxymethyl cellulose graphene oxide microcapsules are prepared；
S2. carboxymethyl cellulose graphene oxide microcapsules are mixed with dispersant in proportion.
The carboxymethyl cellulose graphene oxide flocculant aid can be efficiently applied to existing flocculant system, into one
Step ground, the flocculant includes but not limited to aluminum sulfate, polyoxygenated aluminium, iron chloride and ferrous sulfate, polyacrylamide.It is preferred that
Ground, the flocculant are polyacrylamide.
Compared with prior art, the beneficial effects of the invention are as follows：
The present invention is improved the conductive agent of existing flocculant, chooses graphene oxide as conductive agent, and will oxidation
Graphene makes microcapsules, is combined together with dispersant and obtains carboxymethyl cellulose graphene oxide flocculant aid, the carboxylic first
Base cellulose oxidation graphene flocculant aid can be applied in sewage disposal, and the wadding of flocculant in sewage disposal is especially improved
Solidifying efficiency, in flocculation process, the carboxymethyl cellulose graphene oxide microcapsules can disperse rapidly, in the process of dispersion
Graphene oxide in middle carboxymethyl cellulose graphene oxide microcapsules can gradually be discharged, and playing charge to flocculation process passes
The effect of passing improves flocculated speed, while can also improve the purifying rate (removal rate) of unit flocculant, maintains or reduce flocculant
Dosage.
Specific implementation mode
By following specific examples, present invention be described in more detail, it should be understood that specific implementation described herein
Example is only used for explaining the present invention, is not intended to limit the present invention, can carry out various change in the range of right of the present invention limits
Become.
Unless otherwise noted, raw material involved in following embodiment are commercially available, equipment used and
Technique is known to those skilled in the art.Wherein, graphene oxide is that the limited public affairs of graphite science and technology are contained by Hunan state
Department's production, grain size is 500~800nm.Polyacrylamide is purchased from Sinopharm Chemical Reagent Co., Ltd., and molecular weight is
3000000.
Examples 1 to 7 and comparative example 1~4
Carboxymethyl cellulose graphene oxide flocculant aid, carboxymethyl cellulose graphene oxide flocculant aid are prepared first
Including carboxymethyl cellulose graphene oxide microcapsules and dispersant.Carboxymethyl cellulose graphene oxide microcapsules include core material
And wall material, core material are graphene oxide, wall material is carboxymethyl cellulose.
In each embodiment and comparative example, dosage (A), the use of dispersant of carboxymethyl cellulose graphene oxide microcapsules
It is as shown in table 1 to measure the design parameters such as the mass ratio (D) of (B), the type (C) of dispersant, wall material and core material.
The preparation method of carboxymethyl cellulose graphene oxide flocculant aid includes the following steps：
S1. carboxymethyl cellulose graphene oxide microcapsules are prepared, are included the following steps：
S11. graphene oxide is placed in ultrasonic disperse in pure water, the ratio of graphene oxide and pure water is 0.1g:10ml,
Obtain graphene oxide dispersion；
S12. wall material is made into the solution that mass fraction is 30wt%, gained graphene oxide dispersion is added, in temperature
Under the nitrogen atmosphere for being 1MPa for 35 DEG C, pressure, 30min, mixing speed 800r/min are stirred.
S13. after stirring terminates, solid product is collected in filtering, is freeze-dried to get carboxymethyl cellulose graphite oxide
Alkene microcapsules.
S2. carboxymethyl cellulose graphene oxide microcapsules are mixed with dispersant according to the above ratio.
Table 1
Embodiment 8
As different from Example 1, in the present embodiment carboxymethyl cellulose graphene oxide microcapsules preparation method packet
Include following steps：
S11. graphene oxide is placed in ultrasonic disperse in pure water, the ratio of graphene oxide and pure water is 0.1g:10ml,
Obtain graphene oxide dispersion；
S12. wall material is made into the solution that mass fraction is 30wt%, gained graphene oxide dispersion is added, in temperature
Under the nitrogen atmosphere for being 0.5MPa for 35 DEG C, pressure, 30min, mixing speed 800r/min are stirred.
S13. after stirring terminates, solid product is collected in filtering, is freeze-dried to get carboxymethyl cellulose graphite oxide
Alkene microcapsules.
Other Step By Condition parameters are same as Example 1.
Embodiment 9
As different from Example 1, in the present embodiment carboxymethyl cellulose graphene oxide microcapsules preparation method packet
Include following steps：
S11. graphene oxide is placed in ultrasonic disperse in pure water, the ratio of graphene oxide and pure water is 0.1g:10ml,
Obtain graphene oxide dispersion；
S12. wall material is made into the solution that mass fraction is 30wt%, gained graphene oxide dispersion is added, in temperature
Under the nitrogen atmosphere for being 2MPa for 35 DEG C, pressure, 30min, mixing speed 800r/min are stirred.
S13. after stirring terminates, solid product is collected in filtering, is freeze-dried to get carboxymethyl cellulose graphite oxide
Alkene microcapsules.
Other Step By Condition parameters are same as Example 1.
Embodiment 10
As different from Example 1, in the present embodiment carboxymethyl cellulose graphene oxide microcapsules preparation method packet
Include following steps：
S11. graphene oxide is placed in ultrasonic disperse in pure water, the ratio of graphene oxide and pure water is 0.1g:10ml,
Obtain graphene oxide dispersion；
S12. wall material is made into the solution that mass fraction is 30wt%, gained graphene oxide dispersion is added, in temperature
Under the nitrogen atmosphere for being 1MPa for 30 DEG C, pressure, 30min, mixing speed 1500r/min are stirred.
S13. after stirring terminates, solid product is collected in filtering, is freeze-dried to get carboxymethyl cellulose graphite oxide
Alkene microcapsules.
Other Step By Condition parameters are same as Example 1.
Embodiment 11
As different from Example 1, in the present embodiment carboxymethyl cellulose graphene oxide microcapsules preparation method packet
Include following steps：
S11. graphene oxide is placed in ultrasonic disperse in pure water, the ratio of graphene oxide and pure water is 0.1g:10ml,
Obtain graphene oxide dispersion；
S12. wall material is made into the solution that mass fraction is 30wt%, gained graphene oxide dispersion is added, in temperature
Under the nitrogen atmosphere for being 1MPa for 45 DEG C, pressure, 30min, mixing speed 800r/min are stirred.
S13. after stirring terminates, solid product is collected in filtering, is freeze-dried to get carboxymethyl cellulose graphite oxide
Alkene microcapsules.
Other Step By Condition parameters are same as Example 1.
Comparative example 5
As different from Example 1, in the present embodiment carboxymethyl cellulose graphene oxide microcapsules preparation method packet
Include following steps：
S11. graphene oxide is placed in ultrasonic disperse in pure water, the ratio of graphene oxide and pure water is 0.1g:10ml,
Obtain graphene oxide dispersion；
S12. wall material is made into the solution that mass fraction is 30wt%, gained graphene oxide dispersion is added, in temperature
Be for 35 DEG C, pressure normal pressure nitrogen atmosphere under, stir 30min, mixing speed 800r/min.
S13. after stirring terminates, solid product is collected in filtering, is freeze-dried to get carboxymethyl cellulose graphite oxide
Alkene microcapsules.
Other conditional parameters are same as Example 1.
Comparative example 6
As different from Example 1, in the present embodiment carboxymethyl cellulose graphene oxide microcapsules preparation method packet
Include following steps：
S11. graphene oxide is placed in ultrasonic disperse in pure water, the ratio of graphene oxide and pure water is 0.1g:10ml,
Obtain graphene oxide dispersion；
S12. wall material is made into the solution that mass fraction is 30wt%, gained graphene oxide dispersion is added, in temperature
Under the nitrogen atmosphere for being 3MPa for 35 DEG C, pressure, 30min, mixing speed 800r/min are stirred.
S13. after stirring terminates, solid product is collected in filtering, is freeze-dried to get carboxymethyl cellulose graphite oxide
Alkene microcapsules.
Other Step By Condition parameters are same as Example 1.
Test
Water purification is carried out using carboxymethyl cellulose graphene oxide flocculant aid obtained by the various embodiments described above and comparative example
It can test, condition is as follows：Take identical outdoor elements polluted-water water sample (abbreviation raw water, after tested the turbidity of raw water be
820NTU, turbidity test foundation《The measurement of GB 13200-1991 water turbidities》), flocculant and carboxymethyl cellulose are aoxidized
Graphene flocculant aid presses certain usage ratio, adds in the water sample of isometric raw water (stirring 5min), water sample is worked as in calculating
Turbidity be down to the dosage of required flocculant when 1NTU, and record static balance time (stops after stirring to settlement stability
Used time).
Flocculant chooses polyacrylamide, and flocculant is in mass ratio with carboxymethyl cellulose graphene oxide flocculant aid
9:1 ratio adds in the water sample of isometric raw water.In addition, to be added without carboxymethyl cellulose graphene oxide flocculant aid
Example as a contrast.Shown in test result table 2：
Table 2
Obviously, the above embodiment of the present invention be only to clearly illustrate example of the present invention, and not be pair
The restriction of embodiments of the present invention.For those of ordinary skill in the art, may be used also on the basis of the above description
To make other variations or changes in different ways.There is no necessity and possibility to exhaust all the enbodiments.It is all this
All any modification, equivalent and improvement etc., should be included in the claims in the present invention made by within the spirit and principle of invention
Protection domain within.
Claims (8)
1. application of the carboxymethyl cellulose graphene oxide flocculant aid in sewage disposal, which is characterized in that the carboxymethyl
Cellulose oxidation graphene flocculant aid includes following component in parts by weight：Carboxymethyl cellulose graphene oxide is micro-
75 ~ 90 parts of capsule, 10 ~ 25 parts of dispersant；The carboxymethyl cellulose graphene oxide microcapsules include core material and package institute
State the wall material of core material, the mass ratio of the wall material and core material is 0.5:1~2:1；The core material is graphene oxide, the wall material
For carboxymethyl cellulose.
2. application according to claim 1, which is characterized in that the application is to improve the flocculation of flocculant in sewage disposal
Efficiency.
3. application according to claim 1, which is characterized in that including following component in parts by weight：Carboxymethyl
85 parts of cellulose oxidation graphene microcapsules, 15 parts of dispersant.
4. application according to claim 1, which is characterized in that the mass ratio of the wall material and core material is 1:1.
5. application according to claim 1, which is characterized in that the dispersant is polyvinyl alcohol, polyethylene, pyrrolidones
One or more of.
6. application according to claim 5, which is characterized in that the dispersant is the mixing of polyvinyl alcohol and pyrrolidones
Object；The mass ratio of the polyvinyl alcohol and pyrrolidones is 1:2.
7. according to claim 1 ~ 6 any one of them application, which is characterized in that the carboxymethyl cellulose graphene oxide is micro-
The preparation method of capsule includes the following steps：
S1. graphene oxide is placed in ultrasonic disperse in pure water, obtains graphene oxide dispersion；
S2. wall material is added to the graphene oxide dispersion, in the indifferent gas that temperature is 30 ~ 45 DEG C, pressure is 0.5 ~ 2MPa
Under atmosphere, 30 ~ 60 min are stirred, mixing speed is 800 ~ 1500 r/min；
S3. after stirring terminates, solid product is collected in filtering, and freeze-drying is micro- to get carboxymethyl cellulose graphene oxide
Capsule.
8. application according to claim 7, which is characterized in that the carboxymethyl cellulose graphene oxide flocculant aid packet
Include following steps：
S1. carboxymethyl cellulose graphene oxide microcapsules are prepared；
S2. carboxymethyl cellulose graphene oxide microcapsules are mixed with dispersant in proportion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810563309.XA CN108675421A (en) | 2018-06-01 | 2018-06-01 | Application of the carboxymethyl cellulose graphene oxide flocculant aid in sewage disposal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810563309.XA CN108675421A (en) | 2018-06-01 | 2018-06-01 | Application of the carboxymethyl cellulose graphene oxide flocculant aid in sewage disposal |
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| Publication Number | Publication Date |
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| CN108675421A true CN108675421A (en) | 2018-10-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110182969A (en) * | 2019-06-13 | 2019-08-30 | 江西省万年中南环保产业协同研究院有限公司 | A kind of aquaculture water purification agent and preparation method thereof |
-
2018
- 2018-06-01 CN CN201810563309.XA patent/CN108675421A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110182969A (en) * | 2019-06-13 | 2019-08-30 | 江西省万年中南环保产业协同研究院有限公司 | A kind of aquaculture water purification agent and preparation method thereof |
| CN110182969B (en) * | 2019-06-13 | 2021-08-10 | 江西省万年中南环保产业协同研究院有限公司 | Aquaculture water purifying agent and preparation method thereof |
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