CN102320680B - Method for preparing ion exchanger for removing available phosphorous in water body - Google Patents
Method for preparing ion exchanger for removing available phosphorous in water body Download PDFInfo
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Abstract
The invention relates to a method for preparing a ion exchanger for removing available phosphorous in a water body, which belongs to the technical field of environmental protection. The method mainly comprises the steps of: adding a well prepared lanthanum chloride solution and aluminum chloride solution into zeolite, simultaneously adding a precipitator for carrying out precipitation reaction, and heating to obtain a solid precipitate; and leaching the solid precipitate, washing with distilled water, drying and calcining to obtain a product, namely the ion exchanger for removing the available phosphorous in the water body. The ion exchanger is used for rapidly removing the available phosphorous in the water body by mainly utilizing various chemical substances which are harmless to aquatic organisms and human bodies through an ion exchange effect and a complexing effect, so as to control the eutrophication of the water body. The ion exchanger is convenient to use, is free from the influence of environmental condition and climatic factors, is low in dosage, has fast response and high efficiency after being used and can be used for obviously removing the available phosphorous in the water body and effectively controlling the eutrophication of the water body.
Description
Technical field
The present invention relates to a kind of preparation method of the body available phosphorus ionite that anhydrates, belong to environmental protection technical field.
Background technology
Eutrophication is the too much caused water pollution phenomenons of plant nutrient substance content such as a kind of nitrogen, phosphorus.Under field conditions (factors), along with the continuous sedimentation alluvial at lakebed of alluvium and hydrobiont remains is carried in the river secretly, the lake can be a rich lake from the oligotrophic lake transition, and then develops into marsh and land, and this is a kind of process very slowly.But because activity of human beings; After plant nutrient substance in a large amount of trade effluents and sewage and the agricultural run-off being entered unhurried current water bodys such as lake, reservoir, river mouth, bay; Hydrobiont particularly algae will breed in a large number; Kind, the quantity of biotic population are changed, destroyed the eubiosis of water body.Investigation shows, in 28 states control emphasis lakes (storehouse), satisfies 2 of II class water quality, 6 of the III class, 4 of the IV class, 5 of the V class, 11 of bad V class, and main contamination index is total nitrogen and total phosphorus.Lake, the most of city of China has been in eutrophication or ultra eutrophication state.
Along with environmental problem constantly highlights the pay attention to day by day to environmental problem with people, at present the improvement work of eutrophic lake is just worldwide carried out comprehensively.The body eutrophication control measures comprises that mainly exogenous pollution control and endogenous pollute two aspects of control.The exogenous pollution at present a lot of lakes is well controlled or alleviates, and the control method that endogenous pollutes is still among positive exploration.Because the main forms of body eutrophication is supernutrition element (nitrogen, a phosphorus etc.; Especially the algae excessive growth that phosphorus) causes, and cumulative nitrogen, phosphorus (endogenous nitrogen, phosphorus load) will be discharged into water body under optimum conditions again in the settling, cause secondary pollution; The eutrophication process of continuity water body; And the deterioration of aggravation water body, even the exogenous pollution load is cut down, endogenous pollutes the improvement that also can hinder lake water quality.Therefore under the situation that exogenous pollution is effectively controlled, the release of nutritive substance is an important factor that causes body eutrophication in the settling.And, the research of Taihu Lake body eutrophication is shown that in shallow lake, sedimental endogenous release is the important phosphorus source of overlying water; The Taihu Lake endogenous is dynamically released the phosphorus total amount and is about 425.8t every year, accounts for into 15% of lake total phosphorus.Under the situation of measures such as reduction of discharging of taking to dam, endogenous is released the phosphorus problem becomes one of important factor that influences the Taihu Lake eutrophication.
The technology that control water quality endogenous pollutes can be divided into chemical method, physics method, biological process etc. by its character.Wherein physical treatment technology mainly comprises bed mud dredging, artificial aeration; Biological process mainly is the phytoremediation technology and the bio operon technology of harnessing the river with fishing; The chemistry recovery technique mainly comprises chemical flocculation technology and chemical algae removing technology.Above-mentioned recovery technique is all obtaining certain effect aspect the pollution of control water body endogenous; But also demonstrate certain drawback; Like the bed mud dredging technology; The stirring of process can cause the release and the diffusion of pollutent in the regional area bed mud owing to dredge, so bed mud dredging meeting aggravates secondary pollution in for some time.
Summary of the invention
The objective of the invention is to overcome deficiency of the prior art, a kind of ionite of quick removal water body available phosphorus is provided.Through ion exchange method, utilize chemical substances such as complexing agent, sorbent material, exchanger, through assembly rationally, to reduce available phosphorus content in the water body, the control body eutrophication.
Technical scheme of the present invention: a kind of preparation method of the body available phosphorus ionite that anhydrates, it is characterized in that step is following: its formula rate is counted by weight:
(1) configuration metal ion solution: get anhydrous lanthanum chloride solid 5-10 part, use zero(ppm) water to be configured to the lanthanum chloride solution of concentration as 0.1-1.5mol/L; Get aluminum chloride solids 5-10 part, be configured to the liquor alumini chloridi of 0.1-1.5mol/L with zero(ppm) water; Obtain the mixing solutions that the metals ion total concn is 0.3～1.5mol/L after the above-mentioned lanthanum chloride solution that configures and liquor alumini chloridi mixed fully.
(2) configuration precipitant solution: get precipitation agent 10-20 part, use zero(ppm) water to be configured to the precipitant solution of concentration as 0.5-1mol/L.
(3) precipitin reaction: in reactor drum, add 60-80 part zeolite; Simultaneously the said mixing solutions of step (1) configuration and the said precipitant solution of step (2) configuration are added reactor drum; Keeping mixed system pH value during dropping is 7-10,60-80 ℃ of heating holding temperature; Dropwise the back and keep 60-80 ℃ of heating of temperature of reaction system 2-6h, make deposition aging, obtain the solid-like deposition; Solid-like is precipitated suction filtration, distilled water wash, 100-120 ℃ of drying.
(4) calcining: step (3) is handled the gained solid-like be deposited in packing warehouse-in behind the 300-600 ℃ of calcining 2-8h, obtain the product body available phosphorus ionite that anhydrates.
Said precipitation agent is one or more in yellow soda ash, salt of wormwood, sodium hydroxide, Pottasium Hydroxide, volatile caustic, amine carbonate, Ammonium bicarbonate food grade or the urea.Above-mentioned substance can separately or mix and use, and its ratio is not limit when mixing use; Said precipitation agent plays precipitating action in making processes, retortable water washing is removed, and does not appear at the product of processing and anhydrates in the body available phosphorus ionite.
Beneficial effect of the present invention: utilization of the present invention through ion exchange, complexing action, is removed available phosphorus in the water body to hydrobiont and body harmless's number of chemical material fast, thus the eutrophication of control water body.Ionite of the present invention is easy to use, does not receive the influence of envrionment conditions and climatic factor, and usage quantity is little; Use back instant effect and efficient high, can significantly remove the water body available phosphorus, effectively control body eutrophication.
Embodiment
Following the present invention will combine specific embodiment to further describe:
Embodiment 1: a kind of preparation method of the body available phosphorus ionite that anhydrates, and it is characterized in that step is following: its formula rate is counted by weight:
(1) configuration metal ion solution: get anhydrous lanthanum chloride solid 5g, all the other use zero(ppm) water to be configured to the lanthanum chloride solution of concentration as 0.5mol/L; Get aluminum chloride solids 5g, all the other are configured to the liquor alumini chloridi of concentration 0.5mol/L with zero(ppm) water; Lanthanum chloride solution and liquor alumini chloridi mixing are obtained mixing solutions, and the mixing solutions concentration of metal ions is 0.5mol/L.
(2) configuration precipitant solution: get yellow soda ash 20g, all the other use zero(ppm) water to be configured to the precipitant solution of concentration as 1mol/L.
(3) precipitin reaction: in reactor drum, add the 70g zeolite, simultaneously the mixing solutions of step (1) configuration and the precipitation agent of step (2) configuration are splashed in the zeolite, keeping mixed system pH value during dropping is 10,70 ℃ of heating holding temperatures; Dropwise the back and keep 70 ℃ of heating of temperature of reaction system 6h, make deposition aging, obtain the solid-like deposition; Solid-like is precipitated suction filtration, distilled water wash, 100-120 ℃ of drying.
(4) calcining: step (3) is handled the gained solid-like be deposited in packing warehouse-in behind 500 ℃ of calcining 4h, obtain the product body available phosphorus ionite that anhydrates.
Embodiment 2: a kind of preparation method of the body available phosphorus ionite that anhydrates, and it is characterized in that step is following: its formula rate is counted by weight:
(1) configuration metal ion solution: get anhydrous lanthanum chloride solid 8g, all the other use zero(ppm) water to be configured to the lanthanum chloride solution of concentration as 1mol/L; Get aluminum chloride solids 8g, all the other are configured to the liquor alumini chloridi of concentration 1mol/L with zero(ppm) water; Lanthanum chloride solution and liquor alumini chloridi mixing are obtained mixing solutions, and the metals ion total concn that makes mixing solutions is 1mol/L.
(2) configuration precipitant solution: get urea 8g, Pottasium Hydroxide 5g, all the other use the precipitation agent of zero(ppm) water configuration total concentration of solutes as 0.8mol/L.
(3) precipitin reaction: in reactor drum, add the 71g zeolite, drip the mixing solutions of step (1) configuration and the precipitation agent of step (2) configuration simultaneously, keeping mixed system pH value during dropping is 8,80 ℃ of heating holding temperatures; Dropwise the back and keep 80 ℃ of heating of temperature of reaction system 4h, make deposition aging, obtain the solid-like deposition; Solid-like is precipitated suction filtration, distilled water wash, 100-120 ℃ of drying.
(4) calcining: step (3) is handled the gained solid-like be deposited in packing warehouse-in behind 600 ℃ of calcining 2h, obtain the product body available phosphorus ionite that anhydrates.
Embodiment 3: a kind of preparation method of the body available phosphorus ionite that anhydrates, and it is characterized in that step is following: its formula rate is counted by weight:
(1) configuration metal ion solution: get Lanthanum trichloride solid 10g, all the other use zero(ppm) water to be configured to the lanthanum chloride solution of concentration as 0.3mol/L; Get aluminum chloride solids 10g, all the other are configured to the liquor alumini chloridi of concentration 0.3mol/L with zero(ppm) water; Lanthanum chloride solution and liquor alumini chloridi mixing are obtained mixing solutions, and the metals ion total concn that makes mixing solutions is 0.3mol/L.
(2) configuration precipitant solution: get bicarbonate of ammonia 10g, all the other use the precipitation agent of zero(ppm) water configuration solute concentration as 0.5mol/L.
(3) precipitin reaction: in reactor drum, add the 70g zeolite, drip the mixing solutions of step (1) configuration and the precipitation agent of step (2) configuration simultaneously, keeping mixed system pH value during dropping is 9,6 ℃ of heating holding temperatures; Dropwise the back and keep 60 ℃ of heating of temperature of reaction system 4h, make deposition aging, obtain the solid-like deposition; Solid-like is precipitated suction filtration, distilled water wash, 100-120 ℃ of drying.
(4) calcining: step (3) is handled the gained solid-like be deposited in packing warehouse-in behind 500 ℃ of calcining 8h, obtain the product body available phosphorus ionite that anhydrates.
Application implementation example 1
Use the solution 25L of deionized water configuration phosphate ion concentration, put into the aquarium that volume is 120L as 0.01mg/L.Miniature lift pump (power is 800L/h) and filter vat are fixed on the aquarium, form water plant.The product that the takes by weighing embodiment 1 preparation body available phosphorus ionite 50g that anhydrates puts into filter vat, opens miniature lift pump, water is pumped into the filter vat from aquarium, thereby water is fully contacted with said phosphonium ion exchanger.
Sampling monitoring before on-test, the initial actual concentrations of phosphonium ion is 0.0095mg/L in institute's water distribution appearance; Every phosphate ion concentration variation in 30min water sampling monitoring aquarium after on-test.The result shows, after on-test 3 hours, phosphate ion concentration was lower than method detection limit (method detects and is limited to 0.001mg/L) in the water sample, and clearance reaches 100%, the anhydrate powerful dephosphorization function of body available phosphorus ionite of visible product.
Application implementation example 2
Wu Lihu water intaking 100L puts into the aquarium that volume is 120L in Taihu Lake.Miniature lift pump (power is 800L/h) and filter vat are fixed on the aquarium, form water plant.Take by weighing the product body available phosphorus ionite 50g that anhydrates and put into filter vat, open miniature lift pump, water is pumped into the filter vat from aquarium, thereby water is fully contacted with said phosphonium ion exchanger.
Sampling monitoring before on-test, the starting point concentration of the five li Lake Water Body phosphonium ions in Taihu Lake is 0.032mg/L; Whenever monitor phosphate ion concentration variation in the aquarium at a distance from 30 minutes water samplings after on-test.The result shows, after on-test 2.5-3 hour, it is saturated that the phosphonium ion exchanger reaches exchange, and this moment, the water systems'phosphorus ionic concn was 0.018mg/L, promptly use this phosphonium ion exchanger after 2.5-3 hour the phosphonium ion in the water body be removed 44%, the dephosphorization effect is very significantly.
Claims (1)
1. preparation method of body available phosphorus ionite that anhydrates, it is characterized in that step is following: its formula rate is counted by weight:
(1) configuration metal ion solution: get anhydrous lanthanum chloride solid 5-10 part, all the other use zero(ppm) water to be configured to the lanthanum chloride solution of concentration as 0.1-1.5 mol/L; Get aluminum chloride solids 5-10 part, all the other are configured to the liquor alumini chloridi of concentration 0.1-1.5 mol/L with zero(ppm) water; Obtain the mixing solutions that the metals ion total concn is 0.3～1.5 mol/L after the above-mentioned lanthanum chloride solution that configures and liquor alumini chloridi mixed fully;
(2) configuration precipitant solution: get precipitation agent 10-20 part, all the other use zero(ppm) water to be configured to the precipitant solution of concentration as 0.5-1mol/L;
(3) precipitin reaction: in reactor drum, add 60-80 part zeolite; Simultaneously all mixing solutionss of step (1) configuration and all precipitant solution of step (2) configuration are added reactor drum; Keeping mixed system pH value during dropping is 7-10,60-80 ℃ of heating holding temperature; Dropwise the back and keep 60-80 ℃ of heating of temperature of reaction system 2-6h, make deposition aging, obtain the solid-like deposition; Solid-like is precipitated suction filtration, distilled water wash, 100-120 ℃ of drying;
(4) calcining: step (3) is handled the gained solid-like be deposited in packing warehouse-in behind the 300-600 ℃ of calcining 2-8h, obtain the product body available phosphorus ionite that anhydrates;
Said precipitation agent is one or more in yellow soda ash, salt of wormwood, sodium hydroxide, Pottasium Hydroxide, volatile caustic, volatile salt, bicarbonate of ammonia or the urea.
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106345397B (en) * | 2016-11-14 | 2022-03-01 | 烟台哈勃藻华防治与生态修复科技有限公司 | Adsorbing material for efficiently removing phosphorus in water body |
| CN108097202A (en) * | 2017-12-25 | 2018-06-01 | 芜湖皖江知识产权运营中心有限公司 | A kind of preparation method of the sewage-treating agent of water depth dephosphorization |
| CN109574104B (en) * | 2018-12-07 | 2021-03-09 | 中国科学院南京地理与湖泊研究所 | Bimetal wind wave resistant phosphorus locking material and preparation method and application thereof |
| CN110683596B (en) * | 2019-10-09 | 2021-01-26 | 中国科学院南京地理与湖泊研究所 | Production method for realizing phosphorus fixation capacity amplification of clay mineral |
| CN113457618A (en) * | 2021-07-27 | 2021-10-01 | 北京师范大学珠海校区 | Lanthanum-doped ordered mesoporous molecular sieve for environmental remediation and preparation method and application thereof |
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| CN1088892A (en) * | 1992-03-26 | 1994-07-06 | 清华大学 | The manufacture method of polyphosphoric aluminium chloride coagulant |
| US6207059B1 (en) * | 1998-03-23 | 2001-03-27 | Achemco, Inc. | Process for treating wastewater |
| CN101423265A (en) * | 2008-12-03 | 2009-05-06 | 北京师范大学 | Ion-exchange denitrification and phosphorus removal advanced treatment method |
| CN101579623A (en) * | 2009-04-02 | 2009-11-18 | 天津海驰化工科技有限公司 | Preparation method of load type metal compound catalyst used for water treatment |
| CN101993155A (en) * | 2009-08-17 | 2011-03-30 | 江西金达莱环保研发中心有限公司 | Method for dephosphorization in sewage |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1088892A (en) * | 1992-03-26 | 1994-07-06 | 清华大学 | The manufacture method of polyphosphoric aluminium chloride coagulant |
| US6207059B1 (en) * | 1998-03-23 | 2001-03-27 | Achemco, Inc. | Process for treating wastewater |
| CN101423265A (en) * | 2008-12-03 | 2009-05-06 | 北京师范大学 | Ion-exchange denitrification and phosphorus removal advanced treatment method |
| CN101579623A (en) * | 2009-04-02 | 2009-11-18 | 天津海驰化工科技有限公司 | Preparation method of load type metal compound catalyst used for water treatment |
| CN101993155A (en) * | 2009-08-17 | 2011-03-30 | 江西金达莱环保研发中心有限公司 | Method for dephosphorization in sewage |
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