CN104891618B - Compound water treatment flocculant as well as preparation method and application thereof - Google Patents
Compound water treatment flocculant as well as preparation method and application thereof Download PDFInfo
- Publication number
- CN104891618B CN104891618B CN201510305985.3A CN201510305985A CN104891618B CN 104891618 B CN104891618 B CN 104891618B CN 201510305985 A CN201510305985 A CN 201510305985A CN 104891618 B CN104891618 B CN 104891618B
- Authority
- CN
- China
- Prior art keywords
- chitosan
- water treatment
- flocculant
- bentonite
- shitosan
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention discloses a novel compound water treatment flocculant as well as a preparation method and application thereof, and belongs to the field of sewage treatment. The water treatment flocculant is prepared from bentonite and chitosan which exist extensively in the nature as main raw materials by the steps of adopting an acid dissolution-covering-loading technology to prepare chitosan-loaded bentonite, adopting quaterisation reaction to prepare quaterisation chitosan, and combining polymeric ferric sulfate at the same time, thereby preparing the novel compound water treatment flocculant. The novel compound water treatment flocculant is applied to sewage treatment to solve the problem of aluminum and iron residues during water treatment, the problem of secondary pollution of acrylamide monomers, and the defects of loose particles, difficult sedimentation and the like caused by single use of a biological flocculant.
Description
Technical field
The present invention relates to a kind of preparation of water treatment flocculant and application, more particularly, to a kind of NEW TYPE OF COMPOSITE water process flocculation
Agent and preparation method and application, belongs to sewage treatment area.
Background technology
Flocculation sedimentation with its take up an area less, low cost, convenient management the advantages of become at present both at home and abroad be commonly used to improve
The sewage water treatment method of sewage treating efficiency.Flocculant used by flocculation sedimentation includes inorganic, organic and biological flocculant etc..
Inorganic flocculating agent mainly has aluminium salt, iron salt and ferro-aluminum silicon compound etc., and inorganic flocculating agent consumption is excessive to easily cause aluminum, ferrum residual etc.
Problem；Although polyacrylamide organic polymer coargulator consumption is few, flocculation rate is fast, and sludge creation amount is few, has third
The secondary pollution problem of the pollutant such as acrylamide monomer；Biological flocculant includes shitosan, cellulose, starch, microbial flocculation
Agent etc., though for processing waste water non-secondary pollution, the single link poor-performing using formation flco, granule is loose, is difficult
Sedimentation.Therefore above-mentioned several flocculant are modified and compound, the advantage simultaneously playing several flocculant, become current research
Focus.
Bentonite is the clay with montmorillonite as key component, belongs to layer silicate subclass mineral, and natural reserves are rich
Richness, cheap, there is preferable absorption property.But directly bentonite is used in wastewater treatment often cannot preferably locating
Reason effect, pass through composite modified just to obtain the efficient, sewage treatment flocculating agent of wide spectrum.
Shitosan is the key component of chitin, and chitin widely exists in the shell-fish of nature, insects
In the skeleton of mollusks, it is a kind of abundant natural organic high-molecular compound.Have between due to chitosan molecule group
Very strong hydrogen bond, molecule easily forms microbeam structure, so dissolubility in aqueous is poor, as the wadding in sewage dehydration
When solidifying agent uses, the molecular weight of shitosan and cation concn are all less than normal, so carry out targetedly modified favourable to shitosan
In its application in sewage disposal.
Content of the invention
The present invention is widely present bentonite and shitosan as primary raw material with nature, using sour molten-cladding-load technology
Prepare loading chitosan bentonite, Quaterisation chitosan prepared using quaternary ammonium reaction, simultaneously compatibility bodied ferric sulfate, preparation and
Become NEW TYPE OF COMPOSITE water treatment flocculant, and be applied in sewage disposal, solve the residual of aluminum in water treatment procedure, ferrum
Problem, the granule of the secondary pollution problem of acrylamide monomer and single use biological flocculant is loose, and free settling etc. does not lack
Point.
One of the object of the invention is to disclose a kind of NEW TYPE OF COMPOSITE water treatment flocculant, and this flocculant is by containing following component system
Standby form：
Bentonite, shitosan, epoxypropyltrimethylchloride chloride and bodied ferric sulfate
One of preferred version as the present invention, this flocculant is prepared from by the composition containing following percentage by weight：
Bentonite：20-50 part；
Shitosan：20-50 part；
Epoxypropyltrimethylchloride chloride：10-50 part；
Bodied ferric sulfate：10-30 part.
As the two of the preferred version of the present invention, this flocculant is prepared from by the composition containing following percentage by weight：
Bentonite：30-40 part；
Shitosan：30-40 part；
Epoxypropyltrimethylchloride chloride：20-40 part；
Bodied ferric sulfate：20-30 part.
The second object of the present invention is to provide above-mentioned NEW TYPE OF COMPOSITE water treatment flocculant preparation method, comprises the steps：
1) the bentonitic preparation of loading chitosan：The shitosan taking 1/3 amount in acid-resistant container, according to above shitosan matter
4-6 times of amount, adds the dilute hydrochloric acid solution that mass concentration is 2-3%, and stirring is warming up to 50-60 DEG C, is heated to reflux 0.5-1 little
When, obtain chitosan acid solution, add bentonite, continue stirring, heating reflux reaction 1-2 hour, obtain the molten bag of shitosan acid
Cover bentonite solution, above-mentioned solution evaporation is gone after water, in 100-105 DEG C of drying to constant weight, pulverized 80-100 mesh sieve, and obtained
Loading chitosan bentonite；
2) preparation of Quaterisation chitosan：The shitosan taking surpluses in acid-resistant container, according to above chitosan mass
1-3 times, add mass concentration be 1-2% dilute hydrochloric acid solution, stirring be warming up to 80-90 DEG C, obtain chitosan acid solution, will
Epoxypropyltrimethylchloride chloride is configured to the aqueous solution that mass concentration is 70-80%, is slowly dropped to above-mentioned shitosan acid molten
In liquid, insulation reaction 1-2 hour, obtain Quaterisation chitosan solution, above-mentioned solution is added to stirring and crystallizing in acetone, collect
After crystalline solid washing with alcohol, in 80-100 DEG C of drying to constant weight, pulverized 80-100 mesh sieve, obtained Quaterisation chitosan；
3) preparation of NEW TYPE OF COMPOSITE water treatment flocculant：By step 1) the loading chitosan bentonite prepared, step 2) system
Standby Quaterisation chitosan and bodied ferric sulfate mix homogeneously, as NEW TYPE OF COMPOSITE water treatment flocculant.
The third object of the present invention is to provide application in sewage disposal for the above-mentioned NEW TYPE OF COMPOSITE water treatment flocculant.
The ratio that adds of flocculant and waste water is (0.1-1) kg/m3, addition method is directly will be new multiple for addition method
Heshui flocculant for treating is added in treatment sewage, and the process that adds opens stirring, and reaction finishes, and staticly settles.
Composite sludge dehydrant of the present invention and preparation method and application, compared with prior art, its advantage
As follows：
1) it is composited by plurality of raw materials, the reasonable compatibility of raw material shows good coagulation, flocculation synergism, water process
Wide spectrum in application, efficiently, adding less, processing cost is low.
2) with bentonite cheap and easy to get as primary raw material, using acid molten-that cladding-load technology prepares loading chitosan is swollen
Profit soil, changes loose, not free settling the shortcoming of natural montmorillonite granule so as to be particularly suited in sewage disposal.
3) shitosan being widely present with nature, as primary raw material, prepares Quaterisation chitosan using quaternary ammonium reaction,
Change natural chitosan in the neutral shortcoming with poor solubility in alkaline water so as to water solublity strengthens, easy to use.
4) compatibility of bodied ferric sulfate uses, and has played the advantage of inorganic polymer flocculant, and flocculant bridge linking effect increases
By force, effectively reduce the free copolymer in water.
5) easily cause the compatibility composition of water outlet secondary pollution without aluminium ion, acrylamide etc., belong to environmentally friendly wadding
Solidifying agent.
Specific embodiment
Hereinafter the present invention will be further illustrated by specific embodiment, it will be understood by those skilled in the art that the present invention
Specific embodiment simultaneously limits the present invention never in any form.Any equivalent each falls within the guarantor of the present invention on the basis of the present invention
Within the scope of shield.
Embodiment 1：Preparation and flocculation sediment
Preparation method：
Step 1) take 12kg shitosan in acid-resistant container, add the hydrochloric acid 60kg that mass concentration is 2%, stirring is warming up to
55 DEG C, it is heated to reflux 1 hour, obtains chitosan acid solution, add 35kg bentonite, continuation stirring, heating reflux reaction 1 are little
When, obtain the molten cladding bentonite solution of shitosan acid, above-mentioned solution evaporation is gone after water, in 105 DEG C of dryings to constant weight, pulverized
80 mesh sieves, obtain loading chitosan bentonite.
Step 2) take 24kg shitosan in acid-resistant container, add the hydrochloric acid 48kg that mass concentration is 1%, stirring is warming up to
85 DEG C, obtain chitosan acid solution, 25kg epoxypropyltrimethylchloride chloride be configured to the aqueous solution that mass concentration is 75%,
It is slowly dropped in above-mentioned chitosan acid solution, insulation reaction 1.5 hours, obtains Quaterisation chitosan solution, by above-mentioned solution
It is added to stirring and crystallizing in acetone, after collecting crystalline solid washing with alcohol, in 90 DEG C of dryings to constant weight, pulverized 80 mesh sieves, and obtained
Quaterisation chitosan.
Step 3) by step 1) the loading chitosan bentonite prepared, step 2) Quaterisation chitosan prepared and 24kg gather
Close iron sulfate mix homogeneously, obtain NEW TYPE OF COMPOSITE water treatment flocculant.
Flocculation sediment：
Certain pharmaceutical waste water applied by flocculant prepared by said method, and addition method is directly to add this flocculant
To in treatment sewage, the process that adds opens stirring, and reaction takes supernatant to measure after finishing standing sedimentation 30min, result is such as
Under：
Embodiment 2：Preparation and flocculation sediment
Preparation method：
Step 1) take 16kg shitosan in acid-resistant container, add the hydrochloric acid 64kg that mass concentration is 2%, stirring is warming up to
60 DEG C, it is heated to reflux 0.8 hour, obtains chitosan acid solution, add 28kg bentonite, continuation stirring, heating reflux reaction 1 are little
When, obtain the molten cladding bentonite solution of shitosan acid, above-mentioned solution evaporation is gone after water, in 105 DEG C of dryings to constant weight, pulverized
100 mesh sieves, obtain loading chitosan bentonite.
Step 2) take 32kg shitosan in acid-resistant container, add the hydrochloric acid 32kg that mass concentration is 1%, stirring is warming up to
90 DEG C, obtain chitosan acid solution, 18kg epoxypropyltrimethylchloride chloride be configured to the aqueous solution that mass concentration is 80%,
It is slowly dropped in above-mentioned chitosan acid solution, insulation reaction 2 hours, obtain Quaterisation chitosan solution, above-mentioned solution is added
Enter in acetone stirring and crystallizing, after collecting crystalline solid washing with alcohol, in 100 DEG C of dryings to constant weight, pulverized 100 mesh sieves, and obtained
Quaterisation chitosan；
Step 3) by step 1) the loading chitosan bentonite prepared, step 2) Quaterisation chitosan prepared and 20kg gather
Close iron sulfate mix homogeneously, obtain NEW TYPE OF COMPOSITE water treatment flocculant.
Flocculation sediment：
Certain municipal wastewater applied by flocculant prepared by said method, and addition method is directly to be added to this flocculant to treat
Process in sewage, the process that adds opens stirring, reaction takes supernatant to measure after finishing standing sedimentation 30min, result is as follows：
Embodiment 3：Contrast experiment
As of the present invention group, certain commercially available water treatment flocculant is the NEW TYPE OF COMPOSITE water treatment flocculant of Example 1 preparation
Matched group, this commercially available water treatment flocculant main component is ferric chloride, aluminum chloride, zinc sulfate, magnesium sulfate.Two groups are flocculated
Agent is applied to certain municipal wastewater, and addition method is and directly this flocculant is added in treatment sewage, and the process that adds is opened
Stirring, reaction takes supernatant to measure after finishing standing sedimentation 30min, result is as follows：
As can be seen here, water quality is identical, under the premise of dosage identical, the present invention is to municipal wastewater clean-up effect more preferably.
Embodiment 4：Contrast experiment
The NEW TYPE OF COMPOSITE water treatment flocculant of Example 1 preparation is as of the present invention group.Matched group preparation is as follows：Take swelling
Native 36kg, shitosan 35kg, after bodied ferric sulfate 41kg is sufficiently mixed, in 100 DEG C of dryings to constant weight, pulverized 80 mesh sieves, system
Become water treatment flocculant.
Two groups of flocculant are applied to certain municipal wastewater, addition method is and directly this flocculant is added to pending dirt
In water, the process that adds opens stirring, and reaction takes supernatant to measure after finishing standing sedimentation 30min, result is as follows：
As can be seen here, the flocculant change to the embodiment of the present invention 1 is as follows：Omit loading chitosan bentonite and quaternary ammoniated
The preparation process of shitosan, but same amount of bentonite and shitosan are directly used as the compatibility composition of flocculant, simultaneously
The consumption increasing bodied ferric sulfate is identical to both gross weights.Result shows, under the premise of experiment condition identical, matched group pair
Municipal wastewater clean-up effect extreme difference, even if this explanation is on the premise of major pharmaceutical agent composition of the present invention and consumption are constant, but does not press
Preparation method according to the present invention prepares NEW TYPE OF COMPOSITE water treatment flocculant, it will lead to the wastewater purifying efficiency of extreme difference.
Claims (5)
1. a kind of compound water treatment flocculant is it is characterised in that be prepared from by containing following component：Bentonite, shitosan, ring
Oxygen hydroxypropyltrimonium chloride and bodied ferric sulfate；
The preparation method of described compound water treatment flocculant, comprises the steps：
1) the bentonitic preparation of loading chitosan：The shitosan taking 1/3 amount in acid-resistant container, according to above chitosan mass
4-6 times, add the dilute hydrochloric acid solution that mass concentration is 2-3%, stirring is warming up to 50-60 DEG C, is heated to reflux 0.5-1 hour, obtains
To chitosan acid solution, add bentonite, continue stirring, heating reflux reaction 1-2 hour, obtain the molten cladding swelling of shitosan acid
Native solution, above-mentioned solution evaporation is gone after water, in 100-105 DEG C of drying to constant weight, pulverizes 80-100 mesh sieve, obtains loading shell
Polysaccharide bentonite；
2) preparation of Quaterisation chitosan：The shitosan taking surpluses in acid-resistant container, according to the 1-3 of above chitosan mass
Times, add the dilute hydrochloric acid solution that mass concentration is 1-2%, stirring is warming up to 80-90 DEG C, obtains chitosan acid solution, by epoxy
Hydroxypropyltrimonium chloride is configured to the aqueous solution that mass concentration is 70-80%, is slowly dropped in above-mentioned chitosan acid solution,
Insulation reaction 1-2 hour, obtains Quaterisation chitosan solution, and above-mentioned solution is added to stirring and crystallizing in acetone, collects crystallization
After body washing with alcohol, in 80-100 DEG C of drying to constant weight, pulverized 80-100 mesh sieve, obtained Quaterisation chitosan；3) it is combined
The preparation of water treatment flocculant：By step 1) the loading chitosan bentonite prepared, step 2) Quaterisation chitosan prepared and
Bodied ferric sulfate mix homogeneously, is as combined water treatment flocculant.
2. as claimed in claim 1 a kind of compound water treatment flocculant it is characterised in that by containing following percentage by weight
Composition is prepared from：
Bentonite：20-50 part；
Shitosan：20-50 part；
Epoxypropyltrimethylchloride chloride：10-50 part；
Bodied ferric sulfate：10-30 part.
3. as claimed in claim 2 a kind of compound water treatment flocculant it is characterised in that by including following percentage by weight
Composition be prepared from：
Bentonite：30-40 part；
Shitosan：30-40 part；
Epoxypropyltrimethylchloride chloride：20-40 part；
Bodied ferric sulfate：20-30 part.
4. it is combined the application in sewage disposal of water treatment flocculant as claimed in claim 1.
5. application as claimed in claim 4 is it is characterised in that the ratio that adds of described flocculant and waste water is (0.1-1) kg/
m3, addition method is directly compound water treatment flocculant to be added in treatment sewage, and the process that adds opens stirring, has reacted
Finish, staticly settle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510305985.3A CN104891618B (en) | 2015-06-05 | 2015-06-05 | Compound water treatment flocculant as well as preparation method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510305985.3A CN104891618B (en) | 2015-06-05 | 2015-06-05 | Compound water treatment flocculant as well as preparation method and application thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104891618A CN104891618A (en) | 2015-09-09 |
| CN104891618B true CN104891618B (en) | 2017-02-22 |
Family
ID=54024656
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510305985.3A Expired - Fee Related CN104891618B (en) | 2015-06-05 | 2015-06-05 | Compound water treatment flocculant as well as preparation method and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104891618B (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105948199A (en) * | 2016-05-20 | 2016-09-21 | 张能力 | Composite water treatment flocculant and preparation method and application thereof |
| CN106995220A (en) * | 2017-04-25 | 2017-08-01 | 四川蓉泰环保技术有限公司 | A kind of composition of efficient water treatment agent and preparation method thereof and application method |
| CN107235609B (en) * | 2017-07-27 | 2018-02-27 | 金华雅帅纺织有限公司 | A kind of deep treatment method of compound sewage |
| CN108751365A (en) * | 2018-05-05 | 2018-11-06 | 安徽乐金环境科技有限公司 | A kind of modification infusorial earth composite flocculation agent |
| CN108585147A (en) * | 2018-05-05 | 2018-09-28 | 安徽乐金环境科技有限公司 | A kind of preparation method of composite flocculant |
| CN108658188A (en) * | 2018-05-05 | 2018-10-16 | 安徽乐金环境科技有限公司 | A kind of preparation method of modification infusorial earth composite flocculation agent |
| CN111268776A (en) * | 2018-12-04 | 2020-06-12 | 上海泽戌化学科技有限公司 | Flocculant for petrochemical wastewater treatment and preparation method thereof |
| CN110078262B (en) * | 2019-05-20 | 2022-07-12 | 南京师范大学 | Integrated reactor for removing trace antibiotics in composite polluted surface water and removing method thereof |
| CN111153482A (en) * | 2020-01-14 | 2020-05-15 | 广东碧清环保科技股份有限公司 | Wastewater zero-discharge sewage treatment technology for garment dry printing production |
| CN115231789A (en) * | 2022-08-17 | 2022-10-25 | 东南大学 | Preparation method of printing and dyeing biochemical sludge composite dehydrating agent |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100494223C (en) * | 2007-06-07 | 2009-06-03 | 上海交通大学 | Synthesis of quaternary ammonium salt modified nucleophilic NO donor |
| KR101190902B1 (en) * | 2012-02-17 | 2012-10-12 | 영농조합법인 양지엔텍 | Water quality improvement agent using natural polymers and minerals |
| WO2015022695A1 (en) * | 2013-08-15 | 2015-02-19 | Gavish-Galilee Bio Applications Ltd | Method for pretreatment of wastewater and recreational water with nanocomposites and bridging polymers |
| CN103739098B (en) * | 2014-01-26 | 2015-08-26 | 河北工程大学 | A kind of steel-making waste water conditioner |
-
2015
- 2015-06-05 CN CN201510305985.3A patent/CN104891618B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN104891618A (en) | 2015-09-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104891618B (en) | Compound water treatment flocculant as well as preparation method and application thereof | |
| CN104724809B (en) | A kind of ternary polymerization flocculant based on natural polymer and preparation method thereof | |
| JP6688187B2 (en) | Low acrylamide flocculant composition, method of using low acrylamide flocculant composition | |
| CN106746482A (en) | The compound conditioner of sludge dewatering and mud dewatering method | |
| CN104261652B (en) | High-effective sludge dehydration flocculation agent | |
| CN102153267A (en) | Method for modifying and dewatering sludge | |
| CN109734145A (en) | A kind for the treatment of of dyeing wastewater composite flocculation agent | |
| CN101343099B (en) | Aluminum sulfate-poly-dimethyl diene propyl- ammonium chloride composite flocculent, preparation and application method thereof | |
| CN110395878A (en) | A kind of municipal sludge deep dewatering, solidifying method | |
| CN109179616A (en) | A kind of efficient flocculant of natural degradable and the preparation method and application thereof | |
| CN110282856A (en) | A kind of full strong cation type grafting natural polymer sludge conditioner and preparation method thereof | |
| Dai et al. | Research on dewaterability and properties of sewage sludge under modified phosphogypsum and acetic acid pretreatments | |
| CN103420468A (en) | Multi-element composite flocculant for treating printing and dying wastewater and textile wastewater and preparing method thereof | |
| CN101531413A (en) | Novel compositing and flocculating method for environment-friendly compound flocculating agent | |
| CN104529127A (en) | Sludge dewatering method for coating plate-and-frame filter press with filter aid medium in advance | |
| Yang et al. | Explore the closed-loop disposal route of surplus sludge: Sludge self-circulation preparation of sludge-based biochar (SBB) to enhance sludge dewaterability | |
| CN101125699A (en) | Method for preparing ecological safety type composite flocculant | |
| CN104925929A (en) | Composite flocculant for treating printing and dyeing wastewater | |
| CN103922453A (en) | Flocculating agent for coking wastewater and preparation method thereof and application thereof | |
| CN104671634A (en) | Iron inorganic flocculant sludge dewatering agent | |
| CN103241922A (en) | Compounded sludge dewatering conditioner and application and method thereof | |
| CN106219699A (en) | A kind of composite flocculant and preparation method thereof | |
| CN112794590A (en) | Shale gas well drilling waste oil-based mud curing material | |
| CN102153177A (en) | Efficient dephosphorization agent for waste water treatment | |
| CN104445862A (en) | Composite sludge dehydrating conditioner prepared from papermaking sludge and preparation method of composite sludge hydrating conditioner |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| CB03 | Change of inventor or designer information |
Inventor after: Yu Bo Inventor after: Wang Yan Inventor after: Cao Jianfeng Inventor before: The inventor has waived the right to be mentioned |
|
| COR | Change of bibliographic data | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20170123 Address after: Taishan District of Shandong city of Tai''an Province Tang street 271000 No. 116 Applicant after: Yu Bo Applicant after: Wang Yan Applicant after: Cao Jianfeng Applicant after: Tai'an environmental protection monitoring station Address before: Li Zhen Yang Tun Cun 276111 Shandong city of Linyi province Tancheng County No. 261 Applicant before: Yang Qiang |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170222 Termination date: 20180605 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |