CN101734775B - Method for treating algal bloom by using modified attapulgite as flocculant - Google Patents
Method for treating algal bloom by using modified attapulgite as flocculant Download PDFInfo
- Publication number
- CN101734775B CN101734775B CN2009102517312A CN200910251731A CN101734775B CN 101734775 B CN101734775 B CN 101734775B CN 2009102517312 A CN2009102517312 A CN 2009102517312A CN 200910251731 A CN200910251731 A CN 200910251731A CN 101734775 B CN101734775 B CN 101734775B
- Authority
- CN
- China
- Prior art keywords
- attapulgite
- algae
- flocculant
- flocculation agent
- water body
- 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
Abstract
The invention discloses a method for treating algal bloom by using modified attapulgite as flocculant, comprising the following steps: dipping the attapulgite powder into hydrochloric acid for 23-25h according to the ratio of solid to liquid being 1-3:2-4, drying, pulverizing into powder to obtain flocculant; adding the flocculant into algae water, stirring, standing, and then removing algae floc by a filtering or spooning method. The invention can effectively adsorb flocculating algae, thereby being convenient to remove algae floc by the filtering or spooning method, and having obvious effect on removing nitrogen and phosphorus in water body; the method can treat both the principal and secondary aspects, fundamentally removes danger caused by algal bloom storm, and has low cost, thereby having great application value and market potential.
Description
Technical field
The present invention relates to the biological environmental production field of materials, specifically is attapulgite modified method of administering algal tufa as flocculation agent.
Background technology
In recent years, China's water body in lake algal tufa frequently breaks out, and grows in intensity, and life brings inconvenience to human being's production, has had a strong impact on social and economic development, has become a kind of eco-catastrophe.Cause that main nutrient elements that algal tufa breaks out is that nitrogen, phosphorus, particularly phosphorus in the water body plays critical effect.Remove the algal bloom method than popular at present and roughly can be summed up as physics method, chemical method and biological process:
The physics method: physical method is (like high pressure ionization; High-voltage pulse, alternating intense magnetic field, ultraviolet ray; UW etc.) be to be converted into chemical energy with electric energy; Change to get into the molecular structure and the character of water body or water body material, reach and kill and wound, kill impurity in algae and decomposition, the adsorbed water body, reach the purpose that purifies water system.This advantage is not destroyed water body, noresidue, but physics to kill and wound be relation of equal quantity, it is big more to kill and wound life entity, consumption is many more, it is many more to kill and wound many more energy consumptions, water quality impurity is many more, it is many more to consume energy.Comprise mechanical process or the artificial method of salvaging algae and taking to dredge in addition, the former can only can not tackle the problem at its root as easy supplementary means, and the labor manpower and materials, has little effect.
Chemical method: mainly be to adopt various chemical algae removing agent, its most pronounced effects, but also have most danger, thus very prudent when using, in strict accordance with the consumption operation that requires, otherwise can cause serious consequence.Because the chemical ingredients of these algicide is the copper compound of processable; Perhaps chelated copper class material; These compounds produce injury to a certain degree even cause death the Shui nationality such as fish pasture and water are biological, and carcinogenesis is arranged, and also can produce other some uncertain bad sequela.
Biological process: the biological prosthetic algicide is to tens kinds of living microorganisms and the corresponding enzyme of handling eutrophication water, is a kind of pure biotechnological formulation of All Pure Nature, and the hydrobiont in the water body and the mankind etc. are not produced any harm and spinoff; In a single day product drops into water body, the algae competition nutrition source in rapid activation of the mikrobe in the product and the water, thus it is dead to make algae lack nutrition; Sink under water; Increasing mikrobe continues the dead algae of degraded, until elimination, makes water body become clear.But biological process particularly the method for restoration of the ecosystem among a small circle, the control of algal tufa is an important method in the FX; But these class methods often need to drop in advance huge artificial engineering; To create and control suppresses the condition of required waterplant of algal tufa (bottom low in transparency like submerged plant or that lack suitable bed mud is difficult to existence) or animal survival; Thereby take effect slow, cost is high, the difficult improvement that generally is applicable to big area, sudden algal tufa.
Above several method, though can play the effect of alleviation to a certain extent to wawter bloom, they exist, and cost is high, operation inconvenience perhaps causes secondary pollution problems, becomes the bottleneck that restricts their large-scale application.
Attapulgite is earthy, compact mass originates in sedimentogeneous rock and the weathering crust, is white in color, pearl, Steel Gray, greyish-green or weak satin luster, and soil property is fine and smooth; Oily soapy is arranged, and light weight, property are crisp, and fracture is conchoidal or irregular shape; Water-absorbent is strong, toughness and plasticity-when wet, and dry post shrinkage is little; The little crackle that shows, the water logging bubble collapses diffusing, and suspension-s is met not flocculation sediment of dielectric medium.Because of place of production difference; The composition of attapulgite clay is slightly different, generally speaking, contains the attapulgite of 70-80% in the attapulgite original soil; The smectite of 10-15% and sepiolite and other clay; The quartz of 4-8%, the calcite of 1-5% or rhombspar, the non-clay composition is removed in the process of processing.Therefore, the attapulgite that contains 85-90% in the final product.W.F.Bradley in 1940 have proposed the crystal structure model of attapulgite first.The essential structure unit of attapulgite is formed by the silicon-oxy tetrahedron that is parallel to the carbon axle is double-stranded, and each interchain connects through Sauerstoffatom, and the sexavalence coordination through one deck magnesium atom between each double-stranded levels connects.The every quartet alternatively up and down of the sensing of silicon-oxy tetrahedron active oxygen atom (being the top, angle of silicon-oxy tetrahedron) is arranged, the result who arranges like this, and tetrahedral sheet is linked at interchain continuously; Constitute and connect layered silicate; Yet octahedral sheet is discontinuous, forms a lot of rectangles duct; The cross-sectional sizes in each duct equates, is approximately 0.38nm * 0.63nm.The desirable chemical formula of attapulgite is Al (OH
2)
4(OH)
2Mg
5Si
84H
2O, Si wherein
4+Can be on a small quantity by Fe
3+And Al
3+Ion substitution, Mg
2+Can be on a small quantity by Fe
2+, Fe
3+And Al
3+Ion substitution.The synthesis result of various ion substitutions is that attapulgite usually is with a spot of negative charge, and this kind electric charge belongs to structure charge.
Summary of the invention
The invention provides a kind of attapulgite modified method of administering algal tufa as flocculation agent, is base mateiral with the attapulgite, prepares a kind of flocculation agent; Adsorption-flocculation algae effectively; Thereby be convenient to the algae flco shifted out water body, and, can accomplish to treat both principal and secondary aspect of disease nitrogen, phosphorus removal effect highly significant in the water body through the method for filtering or salvage; Fundamentally remove algal tufa and break out the harm that brings, have bigger using value and market potential.
Technical scheme of the present invention is:
Attapulgite modified method of administering algal tufa as flocculation agent is characterized in that: be with the attapulgite powder according to (1-3): solid-liquid volume ratio (2-4) is immersed in 23-25h in the hydrochloric acid, and is dry then, pulverize powdered and get flocculation agent; This flocculation agent added in the algae water stir, leave standstill, through the method for filtering or salvage the algae flco is shifted out water body then.
Described attapulgite modified method of administering algal tufa as flocculation agent; It is characterized in that: described attapulgite powder is according to (1-3): solid-liquid volume ratio (2-4) is immersed in 23-25h in the hydrochloric acid; And dry under 100-110 ℃, pulverize powdered to be flocculation agent; This flocculation agent added in the algae water according to the ratio of 0.5-2g/L stir, leave standstill, pull flco out water body with 10-50 order gauze until there being obvious flco to generate.
Described attapulgite modified method of administering algal tufa as flocculation agent; It is characterized in that: described attapulgite powder is according to (1-3): solid-liquid volume ratio (2-4) is immersed in 23-25h in the hydrochloric acid; And dry under 100-110 ℃, pulverize powdered to be flocculation agent; This flocculation agent added in the algae water according to the ratio of 0.5-2g/L stir, leave standstill until there being obvious flco to generate, the silica sand filtering layer through 0.2-1 rice thickness filters.
Described attapulgite modified method of administering algal tufa as flocculation agent, it is characterized in that: the particle diameter of described attapulgite powder is the 100-300 order; The concentration of described hydrochloric acid is 5-7mol/L.
Principle of the present invention is that hydrochloric acid is attapulgite modified; Can be used as flocculation agent and handle algae water; Specifically be that hydrochloric acid can change into the material with flocculation activity with elements such as the iron in the attapulgite crystalline structure, aluminium and silicon; Can with the frustule in the water body and other suspended contaminant through polymer build bridge, volume is swept, net is caught and the effect of charge neutrality is flocculated, the flco that formation has the complex three-dimensional network structure.Pore passage structure that the nano stick crystal of attapulgite is inner and the micro-nano level gap structure between the excellent crystalline substance have determined it to have bigger specific surface area; Pollutents such as nitrogen, phosphorus had stronger adsorption activity; Both can they be adsorbed on its inside, duct; Also can be adsorbed onto in the space between the excellent crystalline substance, thereby can it be shifted out water body, reach the effect of removal through salvaging or filtering method.
Useful achievement of the present invention and innovation part:
1, with low cost: the attapulgite reserves are abundant, and production cost is low, are fit to large-scale application;
2, remove the efficient height: the attapulgite specific surface area is big, has higher absorption and removes activity, and the frustule clearance reaches more than 90%; Total nitrogen, total tp removal rate reach more than 40%; The COD clearance reaches more than 50%; Turbidity removes rate and reaches more than 60%;
3, environmental friendliness: attapulgite is natural nonpollution material, adds water body to, can not cause secondary pollution to environment.
Embodiment
Attapulgite modified method of administering algal tufa as flocculation agent:
Embodiment 1
100-300 purpose attapulgite powder is immersed in 24h in the hydrochloric acid of 6mol/L according to the solid-liquid volume ratio of 1-3: 2-4, and in 105 ℃ dry down, pulverize powdered and be flocculation agent.This flocculation agent is added in the algae water according to the ratio of 0.5-2g/L, stirred 2-5 minute, leave standstill, pull flco out water body with 10-50 order gauze until there being obvious flco to generate with 60-120 rev/min of speed.
Embodiment 2
100-300 purpose attapulgite powder is immersed in 24h in the hydrochloric acid of 6mol/L according to the solid-liquid volume ratio of 1-3: 2-4, and in 105 ℃ dry down, pulverize powdered and be flocculation agent.This flocculation agent is added in the algae water according to the ratio of 0.5-2g/L, stirred 2-5 minute with 60-120 rev/min of speed, leave standstill until there being obvious flco to generate, the silica sand filtering layer through 0.2-1 rice thickness filters flco.
Claims (1)
1. attapulgite modified method of administering algal tufa as flocculation agent; It is characterized in that: be to be 100-300 purpose attapulgite powder according to (1-3) with particle diameter: solid-liquid volume ratio (2-4) is immersed in 23-25h in the hydrochloric acid that concentration is 5-7mol/L; And dry under 100-110 ℃, pulverize powdered to be flocculation agent; This flocculation agent added in the algae water according to the ratio of 0.5-2g/L stir, leave standstill, pull flco out water body with 10-50 order gauze until there being obvious flco to generate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102517312A CN101734775B (en) | 2009-12-31 | 2009-12-31 | Method for treating algal bloom by using modified attapulgite as flocculant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102517312A CN101734775B (en) | 2009-12-31 | 2009-12-31 | Method for treating algal bloom by using modified attapulgite as flocculant |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101734775A CN101734775A (en) | 2010-06-16 |
| CN101734775B true CN101734775B (en) | 2012-03-07 |
Family
ID=42458887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009102517312A Expired - Fee Related CN101734775B (en) | 2009-12-31 | 2009-12-31 | Method for treating algal bloom by using modified attapulgite as flocculant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101734775B (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102219334A (en) * | 2011-03-04 | 2011-10-19 | 扬州大学 | Method and device for processing in-situ pollutant at tail end of rainwater pipe network |
| CN103145210A (en) * | 2013-03-25 | 2013-06-12 | 苏州绿世界园林发展有限公司 | Environment-friendly sewage nitrogen and phosphorus removal cleaning agent and preparation method thereof |
| CN103274509A (en) * | 2013-05-27 | 2013-09-04 | 天津市金鳞水处理科技有限公司 | Preparation method of composite flocculant capable of adsorbing heavy metal ions and composite flocculant product through |
| CN103449586B (en) * | 2013-09-05 | 2015-07-15 | 合肥市东方美捷分子材料技术有限公司 | Fiber base modified non-metallic mineral soil flocculant |
| CN103601278B (en) * | 2013-11-29 | 2015-07-08 | 安徽师范大学 | Algaecide, and preparation method and application thereof |
| CN105776479A (en) * | 2016-05-16 | 2016-07-20 | 叶君芝 | Efficient sewage treatment agent |
| CN106035395B (en) * | 2016-06-02 | 2018-11-20 | 安徽师范大学 | The preparation method of algicide base-material, algicide and its preparation method and application |
| CN108383220A (en) * | 2018-02-09 | 2018-08-10 | 同济大学 | A kind of method of sewage microalgae and synchronous nitrogen and phosphorus trapping recycling |
| CN108423781A (en) * | 2018-03-21 | 2018-08-21 | 安徽雷克环境科技有限公司 | A kind of preparation method and application of magnetic flocculant |
| CN111320225B (en) * | 2020-03-04 | 2020-11-03 | 生态环境部华南环境科学研究所 | Method for rapidly treating algae in eutrophic water body |
| CN111410282B (en) * | 2020-03-31 | 2020-11-03 | 华南理工大学 | Superfine powder flocculant for treating algae in eutrophic water and preparation method thereof |
| CN112079481A (en) * | 2020-09-04 | 2020-12-15 | 南京理工大学 | Water target way circulating water treatment system |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1597541A (en) * | 2004-07-27 | 2005-03-23 | 许庆华 | Concave convex rod sewage treatment agent and its production method |
-
2009
- 2009-12-31 CN CN2009102517312A patent/CN101734775B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1597541A (en) * | 2004-07-27 | 2005-03-23 | 许庆华 | Concave convex rod sewage treatment agent and its production method |
Non-Patent Citations (4)
| Title |
|---|
| JP昭58-32805A 1983.02.25 |
| JP昭59-21607A 1984.02.03 |
| 王辅亚等.用改性粘土矿物治理赤潮灾害的前景.《矿物岩石地球化学通报》.1999,第18卷(第4期),第245页第2节. * |
| 赵萍等.凹凸棒石改性方法及其应用现状.《化工生产与技术》.2006,第13卷(第5期),第47页前言和第48页第2节. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101734775A (en) | 2010-06-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101734775B (en) | Method for treating algal bloom by using modified attapulgite as flocculant | |
| JP4689605B2 (en) | Flocculant, method for producing the same and method for using the same | |
| CN106865652A (en) | A kind of concave convex rod water quality cleansing agent and preparation method | |
| Qiao et al. | Pre-oxidation with KMnO4 changes extra-cellular organic matter's secretion characteristics to improve algal removal by coagulation with a low dosage of polyaluminium chloride | |
| WO2007028288A1 (en) | A composite for removing water bloom converted to sinking vegetation and the treatment method using thereof | |
| KR101834334B1 (en) | The Water Quality Control Facilities | |
| CN106865658A (en) | A kind of water quality cleansing agent and preparation method thereof | |
| CN104671367A (en) | Algaecide for effectively removing algae and precipitating alga bodies | |
| CN101306859A (en) | High-efficiency scavenging agent for water quality of aquaculture pond | |
| CN101624240A (en) | Blue algae killing method | |
| CN105948339A (en) | Treatment process of aquaculture waste water | |
| CN105948275A (en) | Sewage treatment agent and preparation method thereof | |
| Cheng et al. | Overview of structure, function and integrated utilization of marine shell | |
| CN111437796B (en) | Modified hydrogel material with ammonia nitrogen and total phosphorus removal effects, and preparation method and application thereof | |
| CN101734746A (en) | Method for adsorbing and removing phycobiliprotein and microcystin-LR by modified attapulgite | |
| CN101734754B (en) | Cyanobacterial scavenger with rare earth complex loaded on mineral material and preparing method thereof | |
| CN1417136A (en) | Method for treatment of sea red tides and fresh water bloom | |
| CN107055726A (en) | A kind of composite flocculation agent and its preparation method and application | |
| CN106927537A (en) | A kind of river course concave convex rod purification of water quality bag and preparation method | |
| CN112125356B (en) | Preparation method of light composite algaecide with dephosphorization effect and floating type algae removal method on light composite algaecide | |
| CN100500588C (en) | Preparation method for composite flocculant and method of harnessing alga bloom | |
| CN103936094B (en) | A kind of fine-grain graphite matrix material that utilizes is except the method for algae | |
| KR101882486B1 (en) | A method for manufacturing artificial fish sauce that increases the recyclability of wastewater sludge | |
| CN105293809B (en) | It is a kind of that method of the aquaculture system except algae is carried out using high-pressure pulse electric | |
| CN113354058B (en) | Red tide algae algaecide based on persulfate oxidation modified nanocellulose and application thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| 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: 20120307 Termination date: 20141231 |
|
| EXPY | Termination of patent right or utility model |