Efficient phosphor fixation technique for controlling eutrophication of water body

A technology, water technology, applied in the direction of ion exchange water/sewage treatment, etc., can solve the problems of inability to fix phosphorus, large area, slow effect, etc.

Active Publication Date: 2005-10-26
烟台哈勃藻华防治与生态修复科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chemical precipitation is effective for high concentrations of phosphate, but not so effective for low concentrations of phosphate
Although the biological phosphorus removal method has been applied now, there are disadvantages such as unstable treatment effect, slow effect in natural lakes, and inability to fix phosphorus in lake bottom sediments.
The ecological wetland method is difficult to be widely used due to the large area, lack of good fillers, and the inability to fix phosphorus in lake bottom sediments.

Method used

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  • Efficient phosphor fixation technique for controlling eutrophication of water body
  • Efficient phosphor fixation technique for controlling eutrophication of water body
  • Efficient phosphor fixation technique for controlling eutrophication of water body

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Embodiment 1 Preparation of efficient phosphorus-fixing material 1

[0015] Weigh 2.0g of lanthanum chloride and dissolve it in 100mL of distilled water to prepare a 2% lanthanum chloride solution by weight. Take 2.0g of bentonite and add it to the above 100mL of lanthanum chloride solution (that is, the solid-to-liquid ratio is 1:50) , sonicate for 1 hour to obtain the phosphorus-fixing material of the present invention.

Embodiment 2

[0016] Embodiment 2 Preparation 2 of high-efficiency phosphorus-fixing material

[0017] Weigh 20.0g of lanthanum nitrate and dissolve it in 200mL of distilled water to prepare a 10% lanthanum nitrate solution by weight. Take 2.0g of illite and add it to the above 200mL lanthanum nitrate solution (i.e. the solid-to-liquid ratio is 1:100). After boiling for 1 hour, the phosphorus-fixing material of the present invention is obtained.

Embodiment 3

[0018] Embodiment 3 Preparation of high-efficiency phosphorus-fixing material 3

[0019] Weigh 5.0g of lanthanum chloride and dissolve it in 100mL of distilled water to prepare a 5% lanthanum chloride solution by mass percentage. Take 5.0g of ordinary soil and add it to the above 100mL lanthanum chloride solution (that is, the solid-liquid ratio is 1:20 ), vibrated in the shaking box for 1h, and obtained the phosphorus-fixing material of the present invention.

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Abstract

The present invention belongs to the field of water treatment technology. In the concrete, it is a technique capable of utilizing chloride or nitrate of rare earth element (for example lanthanum and zirconium, etc) or mixed solution of both them to treat clay to obtain a high-effective phosphorus-fixing material, and said phosphorus-fixing material can be used for fixing water bloom of fresh water, lake bottom deposits and phosphorus in river.

Description

technical field [0001] The invention relates to a material preparation technology for fixing phosphorus in natural water bodies and lake bottom sediments, and a technology for fixing phosphorus in fresh water blooms, lake bottom sediments and river courses. Specifically, it uses chloride salts, nitrates, or a mixed solution of the two rare earth elements (such as lanthanum, zirconium, etc.) to modify the clay to obtain a high-efficiency phosphorus-fixing material, and use it to fix fresh water Hua, lake bottom sediments and phosphorus technology in river courses. The invention belongs to the technical field of water treatment. Background technique [0002] The outbreak of harmful algae in natural lakes and rivers (commonly known as red tide in seawater and algae bloom in freshwater) has become a global environmental pollution problem. Facts have proved that phosphorus is a key factor in controlling water eutrophication, and controlling phosphorus is more effective in contr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/42
Inventor 潘纲袁宪正
Owner 烟台哈勃藻华防治与生态修复科技有限公司
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