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Method for preparing ion exchanger for removing available phosphorous in water body

A technology of ion exchanger and effective phosphorus, applied in the direction of ion exchange water/sewage treatment, chemical instruments and methods, water/sewage treatment, etc., can solve the problem of aggravating secondary pollution, etc., achieve convenient use, small amount of use, and effective fast effect

Inactive Publication Date: 2012-12-12
FRESHWATER FISHERIES RES CENT OF CHINESE ACAD OF FISHERY SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above remediation technologies have achieved certain results in controlling the internal pollution of water, but they also show certain disadvantages, such as sediment dredging technology, the agitation of the dredging process will lead to the release of pollutants in the sediment in some areas and Diffusion, so sediment dredging will aggravate secondary pollution for a period of time

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Embodiment 1: a kind of preparation method of dehydrated effective phosphorus ion exchanger is characterized in that the steps are as follows: its formula ratio is calculated by weight parts:

[0015] (1) Configure metal ion solution: get 5g of anhydrous lanthanum chloride solid, and the rest are configured into a lanthanum chloride solution with a concentration of 0.5mol / L with distilled water; get 5g of aluminum chloride solid, and the rest are configured with a concentration of 0.5mol / L with distilled water L of aluminum chloride solution; the lanthanum chloride solution and the aluminum chloride solution are mixed to obtain a mixed solution, and the metal ion concentration of the mixed solution is 0.5mol / L.

[0016] (2) Prepare precipitant solution: take 20 g of sodium carbonate and the rest with distilled water to prepare a precipitant solution with a concentration of 1 mol / L.

[0017] (3) Precipitation reaction: add 70g zeolite in the reactor, drop the mixed solut...

Embodiment 2

[0019] Embodiment 2: a kind of preparation method of dehydrated body effective phosphorus ion exchanger, it is characterized in that the steps are as follows: its formula ratio is calculated by weight parts:

[0020] (1) configure the metal ion solution: get 8g of anhydrous lanthanum chloride solid, and the rest are configured into a lanthanum chloride solution with a concentration of 1mol / L with distilled water; get 8g of aluminum chloride solid, and the rest are configured with a concentration of 1mol / L with distilled water Aluminum chloride solution; lanthanum chloride solution and aluminum chloride solution are mixed to obtain a mixed solution, so that the total concentration of metal ions in the mixed solution is 1mol / L.

[0021] (2) Prepare a precipitant solution: take 8 g of urea, 5 g of potassium hydroxide, and the rest with distilled water to prepare a precipitant whose total solute concentration is 0.8 mol / L.

[0022] (3) Precipitation reaction: add 71g zeolite in th...

Embodiment 3

[0024] Embodiment 3: a kind of preparation method of dehydrated effective phosphorus ion exchanger, it is characterized in that the steps are as follows: its formula ratio is counted by weight:

[0025] (1) configure metal ion solution: get lanthanum chloride solid 10g, all the other are configured into the lanthanum chloride solution that concentration is 0.3mol / L with distilled water; Get aluminum chloride solid 10g, all the other are configured into concentration 0.3mol / L with distilled water Aluminum chloride solution; the lanthanum chloride solution and the aluminum chloride solution are mixed to obtain a mixed solution, so that the total concentration of metal ions in the mixed solution is 0.3mol / L.

[0026] (2) Prepare a precipitant solution: take 10 g of ammonium bicarbonate, and use distilled water to prepare a precipitant whose solute concentration is 0.5 mol / L.

[0027] (3) Precipitation reaction: add 70g zeolite in the reactor, add dropwise the mixed solution of st...

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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 thewater body and effectively controlling the eutrophication of the water body.

Description

technical field [0001] The invention relates to a preparation method of an effective phosphorus ion exchanger for removing water, and belongs to the technical field of environmental protection. Background technique [0002] Eutrophication is a water pollution phenomenon caused by excessive plant nutrients such as nitrogen and phosphorus. Under natural conditions, with the continuous sedimentation and sedimentation of rivers carrying impact materials and aquatic biological debris on the bottom of the lake, the lake will transition from an oligotrophic lake to a eutrophic lake, and then evolve into a swamp and land. This is an extremely slow process. However, due to human activities, after a large amount of industrial wastewater, domestic sewage, and plant nutrients in farmland runoff are discharged into slow-flowing water bodies such as lakes, reservoirs, estuaries, and bays, aquatic organisms, especially algae, will multiply in large numbers, making the types of biological p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/42C02F1/58
Inventor 李永丹徐跑陈家长张田陈鸿黎春晖孟顺龙
Owner FRESHWATER FISHERIES RES CENT OF CHINESE ACAD OF FISHERY SCI
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