CN107512799A - Method for modifying clay by chitosan and application of algae removal technology thereof - Google Patents
Method for modifying clay by chitosan and application of algae removal technology thereof Download PDFInfo
- Publication number
- CN107512799A CN107512799A CN201710813892.0A CN201710813892A CN107512799A CN 107512799 A CN107512799 A CN 107512799A CN 201710813892 A CN201710813892 A CN 201710813892A CN 107512799 A CN107512799 A CN 107512799A
- Authority
- CN
- China
- Prior art keywords
- algae
- chitosan
- clay
- water
- coagulant
- 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.)
- Granted
Links
Classifications
-
- 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
- C02F1/24—Treatment of water, waste water, or sewage by flotation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- 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
- C02F1/5263—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
- C02F1/52—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
Landscapes
- 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)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention discloses a method for modifying clay by chitosan and application of an algae removal technology thereof; the clay is modified by 0.2-2 mg/mL diluted acid chitosan solution, the modified clay and a traditional coagulant are compounded according to the mass ratio of 1: 2-2: 1, the bubble stability of gas-dissolving water and the hydrophobicity of algae are improved by adding a cationic surfactant, and several medicament components are compounded with each other to generate a synergistic effect. The composite coagulant has the advantages of high flocculation speed, strong adsorption bridging capacity and low cost, and does not contain components harmful to human bodies. And (3) adding the modified clay prepared in the early stage and the coagulant in a compounding manner, adding the surfactant under stirring, and removing most of algae in the water through a dissolved air floatation device. After the raw water is dosed, the content of chlorophyll a (Chl-a) can be reduced to 5 mu g/L through solid-liquid separation by a dissolved air floatation method, and the removal rate reaches more than 95 percent.
Description
Technical field
The invention belongs to water treatment field, relates in particular to algae removal, is related to clay modified, compound coagulant
Prepare and applied to the method except algae, algae is removed suitable for the urban water-body with the small-sized algae kind such as blue-green algae.
Background technology
Being influenceed by historical reasons such as economic factor, Urban Planning Ideas, China's urban discharging pipeline belongs to combined system more, if
Separate sewage system is calculated as often due to construction level is not high to cause very high storm sewer and sewage conduct hybrid junction probability.Rain
In season after heavy rain, early-stage rainwater is mingled with sanitary sewage and is discharged into city river, and undressed pollution load of overflow is to receiving
The water environment of water body does great damage, and large amount of organic and nutriment enter city river, receiving water body is accelerated rich battalion
Fosterization, wawter bloom risk greatly increase.The source that river rainy season nutriment is discharged at present can not also thoroughly solve, it is meant that city
The problem of river course algal tufa outburst, will perplex us for quite a long time, therefore develop efficient, quick algae purification
Method and apparatus is highly significant.
The method of currently used control algal tufa has Physical, chemical method and bioanalysis.Wherein though bioanalysis has without dirt
Dye, low consumption, it is sustainable the advantages that, but it is not easy the method as emergency purifying；Common physico-chemical process, which adds, to be removed
Algae agent or the laggard promoting the circulation of qi of coagulant are floated or precipitation separation, algicide easily cause secondary pollution, conventional coagulant and then remove algae effect not
It is good, except algae effect is undesirable.Clay is used for lake control algae in recent years, for increasing floc density to accelerate sedimentation speed
Degree, or only clay is modified, do not account for the compound synergy of remaining microbubble modifying agent.The present invention has continued this
One thinking, is modified to clay, and improving its surface charge increases its electrical suction-operated and adsorption bridging effect, adds simultaneously
Medicament is improved to dissolved air floatation water to increase daf efficiency.
It is an object of the invention to provide one kind to be used for emergent algae-removing method when city river algal tufa breaks out.Algae is removed with reference to existing
The drawbacks of method, it is necessary to develop that a kind of flocculating effect is notable, and the compound coagulant with price advantage.Therefore, applicant
Solution is made in the natural organic high-molecular polysaccharide chitosan of nature rich reserves, with it to same nature rich reserves
Clay (diatomite, kaolin or montmorillonite) is modified, then with traditional coagulant it is compound obtained a kind of cost it is low, flocculation imitate
The good composite flocculation agent of fruit effect.
The content of the invention
The present invention is directed to the deficiency of existing algae removal technology, for algae surface electrical behavior for it is negative and not free settling the characteristics of,
Propose by chitin modified clay, the clay that modified surface electrical behavior greatly improves is used in mixed way with coagulant again, is improved
Electrical absorption of the flco to algae catches the volume effect of sweeping with net after coagulation.
It is a further object of the present invention to provide the application process of above-mentioned compound coagulant：Improved by adding surfactant
The stability of microbubble in traditional dissolved air water, above-mentioned compound coagulant couples with dissolved air flotation technology carries out separation of solid and liquid.
The present invention is to solve the problems, such as that used technical scheme set forth above is：
A kind of algae-removing method being coupled based on chitin modified clay and air supporting, it is characterised in that：Using 0.2~2
Mg/mL diluted acid chitosan solution modified clay, modified clay and coagulant are compound, are increased by adding cationic surfactant
Solubilization air water bubble stability and molten gas efficiency, pass through dissolved air flotation emergency purifying river containing algae.
In described chitosan solution；Chitosan is 1 with clay mass ratio:5~1:40, modified clay is compound with coagulant
Mass ratio is 1:2~2:1.
Following table show by chitosan dilute acid soln before modified after clay surface Zeta contrast (ratio is chitosan in table
With clay mass ratio)：The clay of unit mass.With the increase of chitosan throwing amount, Zeta liftings are more obvious.
The rear clay surface Zeta changes before modified of the chitosan dilute acid soln of table 1
The equipment for realizing algae-removing method according to the present invention, mixed using coagulation-contact-isolation integral equipment；It is solidifying
2~4min of time, 12~20min of separation of solid and liquid time.
The weight/mass percentage composition of chitosan is 0.2%~2% in described chitosan solution, and sour weight/mass percentage composition is
1%~5%, surplus is water.
The production technology of the chitosan solution is：Chitosan, acid and water are mixed in proportion, in temperature 15-30
DEG C 0.5-1.5 hours stirring reaction time.
Acid described in chitosan solution is formic acid, the one or more in acetic acid, ethanedioic acid, propionic acid, hydrochloric acid.
The application that the chitin modified clay of the present invention is coupled with air supporting, by early-stage preparations good modified clay and coagulation
Agent is compound to be added, and adds surfactant under agitation, and most algae in water removal are gone by dissolved air flotation device.
When the raw water is Haihe River and its tributary raw water, 20~60mg/L of the compound coagulant dosage, by net
Makeup is postponed below the μ g/L of water outlet Chlorophyll-a Content 5.
The Chlorophyll-a Content of the raw water is 40~130 μ g/L.
The present invention greatly improves clay surface Zeta potential, while high score by micro chitosan solution modified clay
The chitosan solution of son can also play adsorption bridging effect, and dosage of PAC can be reduced by being used cooperatively with coagulant；And in water
In add trace cation surfactant, improve the stability of bubble in dissolved air water, the hydrophobicity on increase algae surface makes it
It is easy to be combined with bubble.The inhibitory action that surfactant is formed to flco can also be improved by adding clay.Between several components mutually
Compound, generation cooperative effect.
Chitosan solution is chitosan mass percentage composition 0.2%-2% dilute acid soln.The diluted acid is formic acid, second
One or more in acid, ethanedioic acid, propionic acid, hydrochloric acid.So that acid uses hydrochloric acid as an example：The production technology for stating chitosan solution is：
Chitosan, hydrochloric acid and water are mixed in proportion, in 15-30 DEG C of 0.5-1.5 hour stirring reaction time of temperature.Obtain
Chitosan dilute hydrochloric acid solution.
Weigh appropriate clay (kaolin, diatomite or montmorillonite) to add in quantitative chitosan salt acid solution, constantly shake
Swing and stirring is configured to suspension use.Or chitosan solution is sprayed on the clay constantly stirred and stirred, it is configured to
Different quality than chitin modified clay (chitosan in diluted acid it is perishable, preferably it is now with the current).Chitosan and clay quality
Ratio is controlled 1:5~1:Between 40 (depending on actual water quality and clay characteristic).
Modified clay and coagulant by certain mass than in compound input raw water, can also be by modified clay and coagulant not
Mix but add in proportion respectively in advance, specific compositely proportional is drawn with dosage according to raw water quality difference by testing.
Trace cation surfactant (cetab CTAB) is added into raw water, after stirring
Dissolved air water is discharged under normal pressure.Algae can be separated from the water out by Disengagement zone.
Chitin modified clay of the present invention, add cationic surfactant and improve algae air floating properties, two components
Between not only synthesis it is complementary, and produce cooperative effect, its composite flocculation mechanism is as follows：
1st, common coagulants mainly electrify neutralization, and clay mainly plays suction-operated, and mainly to play lifting glutinous for chitosan
Native surface Zeta potential, absorption bridging effect, carry substantial amounts of positive charge, clay particle in dilute acid soln in chitosan molecule chain
Through protonation it is chitosan-modified after, Zeta potential is with the increase of chitosan content；2nd, chitin modified clay and coagulant
Compound to contribute to elimination of colloid stability, aggregation velocity is accelerated.Because organic cationic natural macromolecule amylose and inorganic mineral
Chemical bridge formation can be formed between material, neutralizes and reduces the surface charge of colloidal particles, have compressed the electric double layer of colloidal particles,
Make colloidal particles cohesion de- steady, be more easy to flocculate；3rd, reduction of the chelation of chitosan to aluminium ion, iron content is with uniqueness
Act on, the free amine group in chitosan molecule chain can borrow hydrogen bond to form the cage molecule with similar network structure, so as to gold
Category ion has stable coordination；4th, micro cationic surface active agent is added into water, water-vapor interface can be reduced
Tension force, the hydrophobicity for strengthening algae simultaneously improve the stability of bubble.But surfactant is individually added to flco formed with certain
Inhibitory action, after clay adds the algae solution containing cationic surfactant, can improve such suppression, improve to flocculate and imitates
Fruit.
After dispensing-contact-dissolved air flotation, algae content substantially reduces raw water.By air-dissolving air-float after raw water dispensing
Method separation of solid and liquid, chlorophyll a (Chl-a) content can be down to 5 μ g/L, and clearance reaches more than 95%.
Algae is removed for the city river using the small-sized algae such as blue-green algae as advantage algae kind, energy is efficient, the control algal tufa of safety, and
The scum silica frost of formation is stable and moisture content is low, is easy to collect disposal.Greatly improve the clean-up effect to algae-containing water.
The advantages of handling algae-containing water using the above method is：
1st, it is compound using chitosan dilute acid soln modified clay and traditional coagulant, the dosage of coagulant is reduced, is improved
The surface electrical behavior of clay, chitosan have chain structure as organic macromolecule, can greatly increase flocculating effect.Such as Fig. 1 institutes
Show：Significant change occurs more before modified for modified kaolin surface character, while because chitosan molecule also has between kaolin
The bridge linking effect having.
2nd, the medicament coagulated particles formation speed by above-mentioned processing is fast, effectively shortens the coagulation time, while to algae
Removal is higher than common coagulants.
3rd, cationic surface active agent is added to be advantageous to the stabilization of microbubble and remove beneficial to algae and its combination, lifting
Algae efficiency.
4th, clay wide material sources, it is cheap, moreover it is possible to reduce coagulant charging quantity to a certain degree.Chitosan and surface-active
Although though agent price is costly, dosage seldom can reach ideal effect.This kind of scheme is cost-effective as a whole.
Brief description of the drawings
Fig. 1 be by chitosan dilute acid soln before modified after clay ESEM comparison diagram.
Wherein, left side is kaolin scanning electron microscopic picture before modified, and middle part is to change by chitosan dilute acid soln with right side
Kaolin scanning electron microscopic picture after property.It was observed that significant change occurs more before modified for modified kaolin surface character, simultaneously
Due to bridge linking effect that chitosan molecule is also provided between kaolin.
Embodiment
For a better understanding of the present invention, this patent is illustrated by example below, but it is of the invention
Embodiment as described herein is not limited to, embodiments of the invention are only used for that the present invention is expanded on further.For this area
The technical staff replacement, change or the change that are carried out to present disclosure, these equivalent form of values equally fall into the application institute
In the range of restriction.
Embodiment one
A kind of modification infusorial earth and aluminium polychloride compound coagulant, it prepared by chitosan solution and diatomite so that with
Aluminium polychloride is combined
The compound method of the chitosan solution is as follows：The hydrochloric acid 10mL that mass concentration is 5% is measured first, adds reaction
Device, in the case where being stirred continuously, 200mg chitosans are added, dissolving plus distilled water diluting are to 100ml, and 30 DEG C are stirred in temperature
Mix 0.5 hour reaction time obtain chitosan concentration be 2mg/mL chitosan dilute hydrochloric acid solution.
Chitosan dilute hydrochloric acid solution in mass ratio 1:5 pairs of diatomite are modified.Modification infusorial earth is pressed with aluminium polychloride
1:2 mass ratio is compound, total dosage 60mg/L；Cetab dosage 1mg/L.Coagulation time 2min；It is molten
Air water reflux ratio 30%；Disengagement zone disengaging time 20min；Disengagement zone hydraulic load 10m/h.
Handle Tianjin discipline village river river containing algae, raw water turbidity 85NTU, the μ g/L of chlorophyll a (Chl-a) content 122.
Processing step is as follows：
Algae raw water will be contained using self priming centrifugal pump and be pumped to coagulating room, after contact fully contacts with dissolved air water
Separated into separate type.Delivery turbidity is less than 5NTU, and clearance is up to 94%；Chl-a contents are less than 5 μ g/L, and clearance reaches
96%.
Embodiment two
A kind of modified kaolin and polymeric ferric polysulfate composite coagulant, it prepared by chitosan solution and kaolin so that with
Polyaluminium sulfate is combined
The compound method of the chitosan solution is as follows：The hydrochloric acid 10mL that mass concentration is 1% is measured first, adds reaction
Device, in the case where being stirred continuously, 20mg chitosans, dissolving plus distilled water diluting is added to 100ml, in 15 DEG C of stirrings of temperature
1.5 hours reaction time obtained the chitosan dilute hydrochloric acid solution that chitosan concentration is 0.2mg/mL.
Chitosan dilute hydrochloric acid solution in mass ratio 1:20 pairs of kaolin are modified.Modified kaolin is pressed with bodied ferric sulfate
1:1 mass ratio is compound, total dosage 20mg/L；Cetab dosage 0.5mg/L.Coagulation time 4min；
Dissolved air water reflux ratio 20%；Disengagement zone disengaging time 15min；Disengagement zone hydraulic load 8m/h.
Handle Tianjin Wei Jinhe rivers containing algae, raw water turbidity 25NTU, the μ g/L of chlorophyll a (Chl-a) content 42.
Processing step is as follows：
Algae raw water will be contained using self priming centrifugal pump and be pumped to coagulating room, after contact fully contacts with dissolved air water
Separated into separate type.Delivery turbidity is less than 2NTU, and clearance is up to 92%；Chl-a contents are less than 2 μ g/L, and clearance reaches
95%.
Embodiment three
A kind of modification infusorial earth and polymeric ferric polysulfate composite coagulant, it prepared by chitosan solution and diatomite so that with
Bodied ferric sulfate is combined
The compound method of the chitosan solution is as follows：The hydrochloric acid 10mL that mass concentration is 2% is measured first, adds reaction
Device, in the case where being stirred continuously, 100mg chitosans are added, dissolving plus distilled water diluting are to 100ml, and 20 DEG C are stirred in temperature
Mix 1.0 hours reaction time obtain chitosan concentration be 1mg/mL chitosan dilute hydrochloric acid solution.
Chitosan dilute hydrochloric acid solution in mass ratio 1:40 pairs of diatomite are modified.Modification infusorial earth is pressed with bodied ferric sulfate
2:1 mass ratio is compound, total dosage 40mg/L；Cetab dosage 1mg/L.The min of coagulation time 4；It is molten
Air water reflux ratio 30%；Disengagement zone disengaging time 12min；Disengagement zone hydraulic load 10m/h.
Handle Tianjin discipline village river heating plant bridge section river containing algae, raw water turbidity 35NTU, chlorophyll a (Chl-a) content
62μg/L。
Processing step is as follows：
Algae raw water will be contained using self priming centrifugal pump and be pumped to coagulating room, after contact fully contacts with dissolved air water
Separated into separate type.Delivery turbidity is less than 3NTU, and clearance is up to 91%；Chl-a contents are less than 5 μ g/L, and clearance reaches
92%.
Example IV
A kind of modified kaolin and aluminium polychloride compound coagulant, it prepared by chitosan solution and kaolin so that with
Aluminium polychloride is combined
The compound method of the chitosan solution is as follows：The hydrochloric acid 10mL that mass concentration is 1% is measured first, adds reaction
Device, in the case where being stirred continuously, 100mg chitosans are added, dissolving plus distilled water diluting are to 100ml, and 25 DEG C are stirred in temperature
Mix 0.5 hour reaction time obtain chitosan concentration be 1mg/mL chitosan dilute hydrochloric acid solution.
Chitosan dilute hydrochloric acid solution in mass ratio 1:30 pairs of kaolin are modified.Modified kaolin is pressed with aluminium polychloride
1:1 mass ratio is compound, total dosage 30mg/L；Cetab dosage 0.5mg/L.Coagulation time 4min；
Dissolved air water reflux ratio 25%；Disengagement zone disengaging time 15min；Disengagement zone hydraulic load 10m/h.
Handle Tianjin Wei Jinhe University Of Tianjin section river containing algae, raw water turbidity 38NTU, chlorophyll a (Chl-a) content
60μg/L。
Processing step is as follows：
Algae raw water will be contained using self priming centrifugal pump and be pumped to coagulating room, after contact fully contacts with dissolved air water
Separated into separate type.Delivery turbidity is less than 3NTU, and clearance is up to 92%；Chl-a contents are less than 5 μ g/L, and clearance reaches
92%.
Four embodiments of the above are set forth to the flow of algae-containing water emergency processing method of the present invention, help to understand this
Patent of invention, but the embodiment of this patent and be not restricted to the described embodiments, it is any without departing under patent principle of the present invention
Change, modification, replacement, combination, the simplification made, should be equivalent substitute mode, be included in the protection of patent of the present invention
Within the scope of.
Claims (9)
- A kind of 1. algae-removing method being coupled based on chitin modified clay and air supporting, it is characterised in that：Using 0.2~2mg/mL Diluted acid chitosan solution modified clay, modified clay and coagulant it is compound, by add cationic surfactant increase it is molten Air water bubble stability and molten gas efficiency, pass through dissolved air flotation emergency purifying river containing algae.
- 2. chitosan solution according to claim 1 is modified algae-removing method, it is characterised in that：Chitosan and clay mass ratio For 1:5~1:40, modified clay is 1 with coagulant composite quality ratio:2~2:1.
- 3. realize the equipment of algae-removing method according to claim 1, it is characterised in that：Using coagulation-contact-isolation integral Equipment is mixed；Solidifying 2~4min of time, 12~20min of separation of solid and liquid time.
- 4. algae-removing method according to claim 1 or 2, it is characterised in that：The quality percentage of chitosan in chitosan solution Content is 0.2%~2%, and sour weight/mass percentage composition is 1%~5%, and surplus is water.
- 5. algae-removing method according to claim 4, it is characterised in that：The production technology of the chitosan solution is：By shell Glycan, acid and water mix in proportion, in 15-30 DEG C of 0.5-1.5 hour stirring reaction time of temperature.
- 6. algae-removing method according to claim 1 or 2, it is characterised in that acid described in chitosan solution is formic acid, acetic acid, One or more in ethanedioic acid, propionic acid, hydrochloric acid.
- 7. the application being coupled according to the chitin modified clay of claim 1 method and air supporting, it is characterised in that：By early-stage preparations Good modified clay with coagulant is compound adds, add surfactant under agitation, be to go to remove water by dissolved air flotation device Middle most algae.
- 8. application according to claim 7, it is characterised in that：It is described when the raw water is Haihe River and its tributary raw water Compound coagulant 20~60mg/L of dosage, after purifier below the μ g/L of water outlet Chlorophyll-a Content 5.
- 9. application according to claim 8, it is characterised in that：The Chlorophyll-a Content of the raw water is 40~130 μ g/L.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710813892.0A CN107512799B (en) | 2017-09-11 | 2017-09-11 | Method for modifying clay by chitosan and application of algae removal technology thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710813892.0A CN107512799B (en) | 2017-09-11 | 2017-09-11 | Method for modifying clay by chitosan and application of algae removal technology thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107512799A true CN107512799A (en) | 2017-12-26 |
| CN107512799B CN107512799B (en) | 2021-07-27 |
Family
ID=60725299
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710813892.0A Active CN107512799B (en) | 2017-09-11 | 2017-09-11 | Method for modifying clay by chitosan and application of algae removal technology thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107512799B (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110127794A (en) * | 2019-04-23 | 2019-08-16 | 浙江工业大学 | Method for rapidly and in-situ targeted eradication of cyanobacterial bloom by capturing algae micro-bubbles |
| CN110550716A (en) * | 2019-08-25 | 2019-12-10 | 天津大学 | Algaecide for repairing urban river algae pollution and preparation method thereof |
| CN110723873A (en) * | 2019-12-02 | 2020-01-24 | 江苏和而同环境建设有限公司 | River channel ecological water environment remediation method |
| TWI719465B (en) * | 2019-04-29 | 2021-02-21 | 全程興業股份有限公司 | Biodegradable flocculant and preparation method thereof |
| CN112717889A (en) * | 2020-11-25 | 2021-04-30 | 王若兮 | Composite modified clay for removing algae and copper, preparation method and application thereof |
| CN113287626A (en) * | 2021-06-02 | 2021-08-24 | 天津大学 | Algaecide based on activated monopersulfate composite modified attapulgite and application thereof |
| CN113526679A (en) * | 2021-08-12 | 2021-10-22 | 广东海洋大学 | Method for composite treatment of polluted water body by algae-chitosan and derivatives thereof |
| CN113621092A (en) * | 2021-08-04 | 2021-11-09 | 山东建筑大学 | Microbubble surface function modifier and preparation method thereof |
| CN114436362A (en) * | 2022-01-27 | 2022-05-06 | 中国科学院水生生物研究所 | Method for removing algae and algae toxins by coupling positively charged substances with positively charged modified fibers |
| JP2022073863A (en) * | 2020-11-02 | 2022-05-17 | 江西省▲環▼境保▲護▼科学研究院 | Water purifying material mainly formed of kaolin and preparation method and use thereof |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010010801A (en) * | 1999-07-23 | 2001-02-15 | 임정규 | A method for eliminating algae using the Dissolved Air Flotation |
| CN101054211A (en) * | 2007-04-10 | 2007-10-17 | 云南德林海生物科技有限公司 | Water-algae self-circulation station for preventing and curing blooms explosion and water body eutrophication |
| CN101264950A (en) * | 2008-01-31 | 2008-09-17 | 云南德林海生物科技有限公司 | Method for removing blue algae by air-float |
| CN101607770A (en) * | 2009-07-21 | 2009-12-23 | 武汉科技大学 | A kind of method of industrial sewage treating water manipulation of regeneration |
| CN101798133A (en) * | 2010-02-10 | 2010-08-11 | 湖北大学 | Composite algicide consisting of gemini surfactant and clay, and algae removal method |
| CN104310653A (en) * | 2014-11-03 | 2015-01-28 | 山东建筑大学 | Method for sewage treatment through co-agglomeration gas flotation method |
| CN106186245A (en) * | 2016-08-18 | 2016-12-07 | 付竹兰 | A kind of method of microcystic aeruginosa in effective removal water |
| CN106477697A (en) * | 2016-06-06 | 2017-03-08 | 四川大学 | A kind of flocculant removing blue-green alga bloom Microcystis aeruginosa and its preparation method and application |
-
2017
- 2017-09-11 CN CN201710813892.0A patent/CN107512799B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010010801A (en) * | 1999-07-23 | 2001-02-15 | 임정규 | A method for eliminating algae using the Dissolved Air Flotation |
| KR100307253B1 (en) * | 1999-07-23 | 2001-09-24 | 임정규 | A method for eliminating algae using the Dissolved Air Flotation |
| CN101054211A (en) * | 2007-04-10 | 2007-10-17 | 云南德林海生物科技有限公司 | Water-algae self-circulation station for preventing and curing blooms explosion and water body eutrophication |
| CN101264950A (en) * | 2008-01-31 | 2008-09-17 | 云南德林海生物科技有限公司 | Method for removing blue algae by air-float |
| CN101607770A (en) * | 2009-07-21 | 2009-12-23 | 武汉科技大学 | A kind of method of industrial sewage treating water manipulation of regeneration |
| CN101798133A (en) * | 2010-02-10 | 2010-08-11 | 湖北大学 | Composite algicide consisting of gemini surfactant and clay, and algae removal method |
| CN104310653A (en) * | 2014-11-03 | 2015-01-28 | 山东建筑大学 | Method for sewage treatment through co-agglomeration gas flotation method |
| CN106477697A (en) * | 2016-06-06 | 2017-03-08 | 四川大学 | A kind of flocculant removing blue-green alga bloom Microcystis aeruginosa and its preparation method and application |
| CN106186245A (en) * | 2016-08-18 | 2016-12-07 | 付竹兰 | A kind of method of microcystic aeruginosa in effective removal water |
Non-Patent Citations (8)
| Title |
|---|
| HUANG, YAWEN ET AL.: ""Using chitosan-modified clays to control black-bloom-induced black suspended matter in Taihu Lake: Deposition and resuspension of black matter/clay flocs"", 《HARMFUL ALGAE 》 * |
| TIAN, ZHUANG ET AL.: ""Full-scale dissolved air flotation (DAF) equipment for emergency treatment of eutrophic water"", 《WATER SCIENCE AND TECHNOLOGY 》 * |
| 张聪婧: ""改性粘土去除水体中藻类的研究"", 《中国优秀硕士学位论文全文数据库工程科技Ⅰ辑》 * |
| 李盼盼: ""利用改性粘土矿物去除藻类的试验研究"", 《中国优秀硕士学位论文全文数据库工程科技Ⅱ辑》 * |
| 李盼盼: "利用改性粘土矿物去除藻类的试验研究", 《中国优秀硕士学位论文全文数据库工程科技Ⅱ辑》 * |
| 田壮: ""城市重污染河道快速净化技术与设备开发"", 《中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑》 * |
| 罗岳平: "用粘土作助凝剂提高聚合氯化铝除藻效果的研究", 《中国给水排水》 * |
| 胡书民主编: "《水处理装备》", 31 July 2010, 合肥工业大学出版社 * |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110127794A (en) * | 2019-04-23 | 2019-08-16 | 浙江工业大学 | Method for rapidly and in-situ targeted eradication of cyanobacterial bloom by capturing algae micro-bubbles |
| TWI719465B (en) * | 2019-04-29 | 2021-02-21 | 全程興業股份有限公司 | Biodegradable flocculant and preparation method thereof |
| CN110550716A (en) * | 2019-08-25 | 2019-12-10 | 天津大学 | Algaecide for repairing urban river algae pollution and preparation method thereof |
| CN110723873A (en) * | 2019-12-02 | 2020-01-24 | 江苏和而同环境建设有限公司 | River channel ecological water environment remediation method |
| JP2022073863A (en) * | 2020-11-02 | 2022-05-17 | 江西省▲環▼境保▲護▼科学研究院 | Water purifying material mainly formed of kaolin and preparation method and use thereof |
| JP7125974B2 (en) | 2020-11-02 | 2022-08-25 | 江西省▲環▼境保▲護▼科学研究院 | Kaolin-based water purification material, its preparation method and its use |
| CN112717889A (en) * | 2020-11-25 | 2021-04-30 | 王若兮 | Composite modified clay for removing algae and copper, preparation method and application thereof |
| CN113287626A (en) * | 2021-06-02 | 2021-08-24 | 天津大学 | Algaecide based on activated monopersulfate composite modified attapulgite and application thereof |
| CN113621092A (en) * | 2021-08-04 | 2021-11-09 | 山东建筑大学 | Microbubble surface function modifier and preparation method thereof |
| CN113621092B (en) * | 2021-08-04 | 2022-11-25 | 山东建筑大学 | Microbubble surface function modifier and preparation method thereof |
| CN113526679A (en) * | 2021-08-12 | 2021-10-22 | 广东海洋大学 | Method for composite treatment of polluted water body by algae-chitosan and derivatives thereof |
| CN114436362A (en) * | 2022-01-27 | 2022-05-06 | 中国科学院水生生物研究所 | Method for removing algae and algae toxins by coupling positively charged substances with positively charged modified fibers |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107512799B (en) | 2021-07-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107512799A (en) | Method for modifying clay by chitosan and application of algae removal technology thereof | |
| EP2397541B1 (en) | A method for harvesting algae | |
| CN207498173U (en) | For the water pump self-suction dissolved air flotation device of seriously polluted river water processing | |
| WO2012176190A1 (en) | Method for pretreatment of wastewater and recreational water with nanocomposites | |
| CN104445749B (en) | A kind of processing method of tailing water | |
| CN103086456A (en) | Method for strengthening separation effect of air floatation process by using micro-bubble modification technology | |
| CN103274544A (en) | Flocculation precipitation and filtering integrated sewage treatment device and sewage treatment method thereof | |
| CN110104752A (en) | A kind of method of sewage coagulating treatment | |
| CN104150741A (en) | Sludge chemical conditioning method and conditioner | |
| KR102496780B1 (en) | Anionic coagulant, manufacturing method and processing method of anionic coagulant | |
| KR101190902B1 (en) | Water quality improvement agent using natural polymers and minerals | |
| CN102408145B (en) | Composite flocculant and use thereof | |
| KR20190002021A (en) | Preparation methods of organic and inorganic complex flocculants for waste waters | |
| JP4272122B2 (en) | Coagulated water treatment method and apparatus | |
| Liu et al. | Magnetic coagulation and flocculation of kaolin suspension using Fe3O4 with plant polyphenol self-assembled flocculants | |
| CN106745592A (en) | It is a kind of with heavy metal ion adsorbed and detection function composite flocculation agent and preparation method thereof | |
| CN105236536A (en) | Preparation method of steel industry sewage flocculants | |
| CN109734165A (en) | A kind of sewage treatment flocculating agent and preparation method thereof | |
| CN106396271B (en) | A method of improving activated sludge settling property | |
| CN103922451A (en) | Environment-friendly polysilicic acid modified montmorillonite composite running water flocculant | |
| CN101704569A (en) | Flocculant for purifying emulsified oil-containing waste water and preparation method thereof | |
| JP2010172882A (en) | Coagulant, and method of treating muddy effluent | |
| CN210764953U (en) | Municipal sludge reduction and dehydration system | |
| CN103626337B (en) | A kind of processing method of sewage | |
| CN102487964B (en) | Bacteriostat for secondary breeding bacteria, preparation method thereof and purifier |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder |
Address after: 300452 Binhai Industrial Research Institute Campus of Tianjin University, No. 48 Jialingjiang Road, Binhai New Area, Tianjin Patentee after: Tianjin University Address before: 300072 Tianjin City, Nankai District Wei Jin Road No. 92, Tianjin University Patentee before: Tianjin University |
|
| CP02 | Change in the address of a patent holder |