CN107364939A - It is a kind of using plant extracts as sewage flocculant of main component and preparation method thereof - Google Patents
It is a kind of using plant extracts as sewage flocculant of main component and preparation method thereof Download PDFInfo
- Publication number
- CN107364939A CN107364939A CN201710786655.XA CN201710786655A CN107364939A CN 107364939 A CN107364939 A CN 107364939A CN 201710786655 A CN201710786655 A CN 201710786655A CN 107364939 A CN107364939 A CN 107364939A
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- China
- Prior art keywords
- lignin
- main component
- plant extracts
- cyclodextrin
- sewage
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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
- C02F1/5263—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using natural chemical compounds
-
- 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
- C02F1/286—Treatment of water, waste water, or sewage by sorption using natural organic sorbents or derivatives thereof
-
- 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
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
-
- 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
- C02F2101/30—Organic compounds
- C02F2101/308—Dyes; Colorants; Fluorescent agents
Abstract
The present invention provides a kind of sewage flocculant using plant extracts as main component, includes the composition of following percentage by weight：Fulvic acid 5 8%, chitosan 2 5%, lignin 12 20%, cyclodextrin surplus.The present invention is the sewage flocculant of main component mainly using the cyclodextrin of plant extract and lignin as primary raw material using plant extracts, lignin and fulvic acid are grafted on cyclodextrin by chemical modification, the characteristics of making flocculant have cation and Flokal B concurrently, molecular weight are high；Simultaneously using the lignin of cattail Down Fiber extraction, also with extraordinary oil absorbing effect, treatment effect to dyeing waste water it is further preferred that.
Description
Technical field
The present invention relates to technical field of sewage, especially, is related to a kind of dirt using plant extracts as main component
Water flocculation agent and preparation method thereof.
Background technology
Water resource pollution has been a serious social concern, heavy metal ion, agricultural chemicals, insecticide and environment in sewage
Hormone etc. carrys out huge threat to the health care belt of the mankind.Practice and research for many years shows, flocculation is added in wastewater treatment process
Polluter in agent coagulation sewage is a kind of one of effective method, and it has technique simple and the characteristics of cost is cheap, because
Development of this domestic and international researcher to flocculant is paid much attention to.
90% above is water, remaining is solid matter in municipal sewage.Generally contain following various pollutants in water：
Suspension：Generally 200-500 mg/litres, sometimes can be more than 1000 mg/litres.Wherein inorganic and colloid
Grain easily adsorbs organic poison, heavy metal, agricultural chemicals, pathogen etc., is formed and endangers big combined pollutant.Suspension can be through overmulling
The methods of solidifying, precipitation, filtering, is separated from water, and forms sludge and removes.
Pathogen：Including germ, parasite, viral three classes.Common germ is enteric infection germ, and every liter of sewage is reachable
Millions of, the diseases such as cholera, typhoid fever, enterogastritis, infantile diarrhea, dysentery can be propagated.Common parasite has amoeba, wheat field
That filaria, roundworm, whipworm, blood fluke, liver fluke etc., various parasitic diseases can be caused.Viral species are a lot, only in night soil just
There is over one hundred kind, it can be common that enterovirus, adenovirus, Respirovirus, infectious hepatitis virus etc..It is sick in every liter of sanitary sewage
Poison is up to 50 ten thousand to 7,000 ten thousand.
Oxygen consumption organic：Including carbohydrate, protein, grease, amino acid, aliphatic acid, esters etc..Its concentration is commonly used
Five-day BOD (BOD5) represents.Also total oxygen demand (TOD), total organic carbon (TOC), COD (COD) can be used
Combine evaluation etc. index.Conventional BOD5 and COD ratio reflects the bio-degradable of sewage, with microbial respiratory oxygen
Amount changes over time curve to reflect the speed of biochemical degradation, selects processing scheme accordingly.Municipal sewage BOD5 is generally every liter
The industrial wastewater such as 300-500 milligrams, papermaking, food, fiber may be up to every liter of thousands of milligrams.Nutrient for plants：Sanitary sewage, food
The all nutriment containing plant -- nitrogen and phosphorus in product industrial wastewater, urban ground runoff sewage.Phosphorus contains in municipal sewage
Amount is original for each person every year less than 1 kilogram, and due to largely using phosphorus-containing detergent, content dramatically increases.Phosphorus from detergent accounts for
The 30-75% of Phosphorus in Domestic Wastewater with Pulverized content, account for 17% or so of surface runoff phosphor in sewage content.The main source of nitrogen is food
The waste water of the industry such as product, chemical fertilizer, coking, and urban ground runoff and excrement.Nitrate, nitrite, ammonium salt, phosphate and
Some organic phosphorus compounds are all nutrient for plants, can cause surface water body eutrophication, red tide of sea and underground rich water.Nitric acid
The too high drinking-water of salt content has certain toxicity, can be reduced into nitrite in stomach and cause enterogenous cyanosis.Nitrous
Hydrochlorate synthesizes nitrosamines material in human body with secondary amine may teratogenesis, carcinogenesis.
In municipal sewage in addition to the pollutant of four class generally existings containing more than, it is also possible to the difference of pollution sources containing a variety of
Inorganic pollution and organic pollution, such as fluorine, arsenic, heavy metal, phenol, cyanogen, organo-chlorine pesticide, Polychlorinated biphenyls, polycyclic aromatic hydrocarbon.
Surface water body is discharged into if municipal sewage is without processing, river, lake can be contaminated.But municipal sewage water
Amount is very big, such as all carries out sewage second-level processing, and investment is very big.Therefore, with reference to the cost-effective processing of concrete condition research
Measure, it is one of key subjects of environmental protection.
Therefore development of the domestic and international researcher to flocculant is paid much attention to.In recent years, with the getting worse of oil crisis
With the continuous reinforcement of mankind's environmental consciousness, researcher starts constantly to explore various natural, cheap and efficient flocculation materials.At present
The natural polymer used extensively mainly has：Cellulose, starch, chitin, chitosan, lignin, fulvic acid and alginic acid
Sodium etc..Natural polymer has the characteristics of its is unique as flocculant material, first its advantages of nontoxic raw materials or low toxicity, biodegradable,
Secondary pollution will not be produced.Secondly material source is extensive, cheap.Above all natural polymer has multiple active groups
Group, strong applicability.If being developed based on the efficient flocculant of natural polymer, its application prospect will be very wide.
In recent years, with oil crisis getting worse and mankind's environmental consciousness continuous reinforcement, researcher starts constantly
Explore various natural, cheap and efficient flocculation materials.
The content of the invention
It is a kind of using plant extracts as sewage flocculant of main component and preparation method thereof present invention aims at providing,
To solve technical problem.
A kind of sewage flocculant using plant extracts as main component, include the composition of following percentage by weight：It is yellow rotten
Sour 5-8%, chitosan 2-5%, lignin 12-20%, cyclodextrin surplus.
Preferably, what described cyclodextrin was extracted by corn is that amylose is prepared.
Preferably, described lignin is the lignin of cattail Down Fiber extraction.
Cattail Down Fiber has extraordinary oil absorbency, and the lignin that the present invention extracts from cattail suede not only has non-
Often good oil absorbency is and very good to the adsorption effect of dyeing and printing sewage after chitosan graft.
A kind of preparation method using plant extracts as the sewage flocculant of main component, comprise the following steps：
(A) by cyclodextrin into the NaOH aqueous solution, lasting stirring makes it be dissolved as clear solution, and hydroxyl is fully living
Change, then add absolute ethyl alcohol and stir；
(B) cyclodextrin solution that step (A) obtains is heated and maintains 30-40 DEG C, add lignin and fulvic acid, and
Initiator is added, stirs simultaneously sustained response 5-8h；
(C) the acetone terminating reaction of gained 0.5-1 times of volume of reaction system in step B is subsequently poured into, it is quiet after stirring
Put, the acetone on upper strata is removed after system layering；Hydrochloric acid solution is added dropwise to adjust reaction system to neutrality；The neutral production of gained
Thing pours into volume in its 4-6 times absolute ethyl alcohol, in centrifugation 10-20min, to leave and take bottom viscous liquid；
(D) after addition chitosan is uniformly dispersed, the drying sewage treatment flocculating agent under the conditions of 40-50 DEG C.
Preferably, described initiator is hydrogen peroxide.
The invention has the advantages that：The present invention's is main as the sewage flocculant of main component using plant extracts
Using the cyclodextrin of plant extract and lignin as primary raw material, lignin and fulvic acid are grafted to by cyclodextrin by chemical modification
On, the characteristics of making flocculant have cation and Flokal B concurrently, molecular weight is high；Simultaneously using the wood of cattail Down Fiber extraction
Quality, also with extraordinary oil absorbing effect, treatment effect to dyeing waste water it is further preferred that.
In addition to objects, features and advantages described above, the present invention also has other objects, features and advantages.
The present invention is further detailed explanation below.
Embodiment
Embodiments of the invention are described in detail below, but the present invention can be limited and covered according to claim
Multitude of different ways implement.
Embodiment 1
A kind of sewage flocculant using plant extracts as main component, include the composition of following percentage by weight：It is yellow rotten
Acid 6.5%, chitosan 3.5%, lignin 18%, cyclodextrin surplus.
What described cyclodextrin was extracted by corn is that amylose is prepared.
Described lignin is the lignin of cattail Down Fiber extraction.
A kind of preparation method using plant extracts as the sewage flocculant of main component, comprise the following steps：
(A) by cyclodextrin into the NaOH aqueous solution, lasting stirring makes it be dissolved as clear solution, and hydroxyl is fully living
Change, then add absolute ethyl alcohol and stir；
(B) cyclodextrin solution that step (A) obtains is heated and maintains 36 DEG C, add lignin and fulvic acid, and add
Enter hydrogen peroxide as initiator, stir simultaneously sustained response 8h；
(C) the acetone terminating reaction of gained 0.8 times of volume of reaction system in step B is subsequently poured into, is stood after stirring,
The acetone on upper strata is removed after system layering；Hydrochloric acid solution is added dropwise to adjust reaction system to neutrality；Gained neutral products
Volume is poured into its 5 times absolute ethyl alcohol, in centrifugation 15min, to leave and take bottom viscous liquid；
(D) after addition chitosan is uniformly dispersed, the drying sewage treatment flocculating agent under the conditions of 45 DEG C.
Embodiment 2
A kind of sewage flocculant using plant extracts as main component, include the composition of following percentage by weight：It is yellow rotten
Acid 8%, chitosan 2%, lignin 20%, cyclodextrin surplus.
What described cyclodextrin was extracted by corn is that amylose is prepared.
Described lignin is the lignin of cattail Down Fiber extraction.
A kind of preparation method using plant extracts as the sewage flocculant of main component, comprise the following steps：
(A) by cyclodextrin into the NaOH aqueous solution, lasting stirring makes it be dissolved as clear solution, and hydroxyl is fully living
Change, then add absolute ethyl alcohol and stir；
(B) cyclodextrin solution that step (A) obtains is heated and maintains 30 DEG C, add lignin and fulvic acid, and add
Enter hydrogen peroxide as initiator, stir simultaneously sustained response 8h；
(C) the acetone terminating reaction of gained 0.5 times of volume of reaction system in step B is subsequently poured into, is stood after stirring,
The acetone on upper strata is removed after system layering；Hydrochloric acid solution is added dropwise to adjust reaction system to neutrality；Gained neutral products
Volume is poured into its 6 times absolute ethyl alcohol, in centrifugation 10min, to leave and take bottom viscous liquid；
(D) after addition chitosan is uniformly dispersed, the drying sewage treatment flocculating agent under the conditions of 50 DEG C.
Embodiment 3
A kind of sewage flocculant using plant extracts as main component, include the composition of following percentage by weight：It is yellow rotten
Acid 5%, chitosan 5%, lignin 12%, cyclodextrin surplus.
What described cyclodextrin was extracted by corn is that amylose is prepared.
Described lignin is the lignin of cattail Down Fiber extraction.
A kind of preparation method using plant extracts as the sewage flocculant of main component, comprise the following steps：
(A) by cyclodextrin into the NaOH aqueous solution, lasting stirring makes it be dissolved as clear solution, and hydroxyl is fully living
Change, then add absolute ethyl alcohol and stir；
(B) cyclodextrin solution that step (A) obtains is heated and maintains 40 DEG C, add lignin and fulvic acid, and add
Enter hydrogen peroxide as initiator, stir simultaneously sustained response 5h；
(C) the acetone terminating reaction of gained 1 times of volume of reaction system in step B is subsequently poured into, stands, treats after stirring
The acetone on upper strata is removed after system layering；Hydrochloric acid solution is added dropwise to adjust reaction system to neutrality；Gained neutral products are fallen
Enter volume in its 4 times absolute ethyl alcohol, in centrifugation 20min, to leave and take bottom viscous liquid；
(D) after addition chitosan is uniformly dispersed, the drying sewage treatment flocculating agent under the conditions of 40 DEG C.
Embodiment 1-3 flocculant is detected to the treatment effect of dyeing and printing sewage, obtains following data：
Table 1：Effluent quality situation
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art the invention discloses technical scope in, technique according to the invention scheme and its
Inventive concept is subject to equivalent substitution or change, should all be included within the scope of the present invention.
Claims (6)
1. a kind of sewage flocculant using plant extracts as main component, it is characterised in that including following percentage by weight
Composition：Fulvic acid 5-8%, chitosan 2-5%, lignin 12-20%, cyclodextrin surplus.
2. the sewage flocculant using plant extracts as main component as claimed in claim 1, it is characterised in that including following
The composition of percentage by weight：Fulvic acid 6.5%, chitosan 3.5%, lignin 18%, cyclodextrin surplus.
3. the sewage flocculant using plant extracts as main component as claimed in claim 1 or 2, it is characterised in that described
Cyclodextrin extracted by corn is that amylose is prepared.
4. the sewage flocculant using plant extracts as main component as claimed in claim 1 or 2, it is characterised in that described
Lignin be cattail Down Fiber extraction lignin.
5. a kind of preparation method using plant extracts as the sewage flocculant of main component, comprise the following steps：
(A) by cyclodextrin into the NaOH aqueous solution, lasting stirring makes it be dissolved as clear solution, and hydroxyl fully activates,
Then add absolute ethyl alcohol and stir；
(B) cyclodextrin solution that step (A) obtains is heated and maintains 30-40 DEG C, add lignin and fulvic acid, and add
Initiator, stir simultaneously sustained response 5-8h；
(C) the acetone terminating reaction of gained 0.5-1 times of volume of reaction system in step B is subsequently poured into, stands, treats after stirring
The acetone on upper strata is removed after system layering；Hydrochloric acid solution is added dropwise to adjust reaction system to neutrality；Gained neutral products are fallen
Enter volume in its 4-6 times absolute ethyl alcohol, in centrifugation 10-20min, to leave and take bottom viscous liquid；
(D) after addition chitosan is uniformly dispersed, the drying sewage treatment flocculating agent under the conditions of 40-50 DEG C.
6. the preparation method using plant extracts as the sewage flocculant of main component, its feature exist as claimed in claim 5
In described initiator is hydrogen peroxide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710786655.XA CN107364939A (en) | 2017-09-04 | 2017-09-04 | It is a kind of using plant extracts as sewage flocculant of main component and preparation method thereof |
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| CN201710786655.XA CN107364939A (en) | 2017-09-04 | 2017-09-04 | It is a kind of using plant extracts as sewage flocculant of main component and preparation method thereof |
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| CN107364939A true CN107364939A (en) | 2017-11-21 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109336238A (en) * | 2018-12-17 | 2019-02-15 | 方期洲 | A kind of flocculant and its application for treatment of dyeing wastewater |
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|---|---|---|---|---|
| JP2009061429A (en) * | 2007-09-07 | 2009-03-26 | Kanagawa Prefecture | Separation method of hydrophobic substance using multi-anionic cyclodextrin compound and selective adsorbent of hydrophobic substance |
| CN101696441A (en) * | 2009-10-19 | 2010-04-21 | 江南大学 | Method for preparing large cyclodextrin |
| CN104725644A (en) * | 2015-04-04 | 2015-06-24 | 青岛大学 | Amphiprotic flocculant based on natural high polymers and preparation method thereof |
| CN104803569A (en) * | 2015-04-01 | 2015-07-29 | 遵义师范学院 | Method for treating sludge through coupling of electrochemistry and flocculant |
| CN106589169A (en) * | 2017-01-23 | 2017-04-26 | 江南大学 | Preparation method of water-soluble high-molecular cyclodextrin polymer |
-
2017
- 2017-09-04 CN CN201710786655.XA patent/CN107364939A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009061429A (en) * | 2007-09-07 | 2009-03-26 | Kanagawa Prefecture | Separation method of hydrophobic substance using multi-anionic cyclodextrin compound and selective adsorbent of hydrophobic substance |
| CN101696441A (en) * | 2009-10-19 | 2010-04-21 | 江南大学 | Method for preparing large cyclodextrin |
| CN104803569A (en) * | 2015-04-01 | 2015-07-29 | 遵义师范学院 | Method for treating sludge through coupling of electrochemistry and flocculant |
| CN104725644A (en) * | 2015-04-04 | 2015-06-24 | 青岛大学 | Amphiprotic flocculant based on natural high polymers and preparation method thereof |
| CN106589169A (en) * | 2017-01-23 | 2017-04-26 | 江南大学 | Preparation method of water-soluble high-molecular cyclodextrin polymer |
Non-Patent Citations (1)
| Title |
|---|
| 霍萃萌: ""黄腐酸基β-环糊精醚的合成及对Cu2+、Cd2+的吸附性能"", 《中国优秀硕士学位论文全文数据库（电子期刊）工程特辑I辑》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109336238A (en) * | 2018-12-17 | 2019-02-15 | 方期洲 | A kind of flocculant and its application for treatment of dyeing wastewater |
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Application publication date: 20171121 |
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