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Preparation method of modified shrimp shell enabling alga settlement and application

A shrimp shell modification technology, applied in chemical instruments and methods, flocculation/sedimentation water/sewage treatment, special treatment targets, etc., to achieve the effects of easy operation, clear water, and little impact on the environment

Active Publication Date: 2017-07-28
NANHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But these methods have their inherent disadvantages

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The preparation method of the modified shrimp shell that can make the algae body settle in the present invention, utilizes sodium hydroxide and shrimp shell to prepare the process of sodium hydroxide modified shrimp shell as follows:

[0022] 1) Add 10-70 parts by mass of sodium hydroxide to 1 part by volume of pure water or distilled water, and dissolve to obtain an aqueous solution of sodium hydroxide;

[0023] 2) Take 15 parts by mass of dried and pulverized shrimp shells, slowly add the prepared sodium hydroxide aqueous solution, and then undergo magnetic stirring and water bath heating to modify for 0.5-2.5 hours;

[0024] 3) Filter with filter paper, then wash the modified shrimp shells with pure water or distilled water until neutral, and dry to obtain the final sodium hydroxide modified shrimp shells;

[0025] The unit of parts by volume is in L, and the unit of parts by mass is in g.

Embodiment 2

[0027] The preparation method of modified shrimp shells in this example that can make the algae settle is different from Example 1 in that: 10 to 20 parts by mass of sodium hydroxide is added to 1 part by volume of pure water or distilled water, and then dried and crushed After the shrimp shells.

Embodiment 3

[0029] The preparation method of modified shrimp shells in this example that can make the algae settle is different from Example 1: add 20 to 30 parts by mass of sodium hydroxide to 1 part by volume of pure water or distilled water, and then add dry and crushed After the shrimp shells.

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PUM

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Abstract

The invention relates to a modified material for removing blue alga and algal toxin from water. The preparation method of a modified shrimp shell enabling alga settlement utilizes sodium hydroxide and shrimp shell to prepare sodium hydroxide modified shrimp shell, and specifically includes the steps of: 1) adding 10-70 mass parts of sodium hydroxide into 1 volume part of purified water or distilled water; 2) taking 15 mass parts of dried and crushed shrimp shell, adding the prepared sodium hydroxide aqueous solution, conducting magnetic stirring and water-bath heating modification for 0.5-2.5h; and 3) performing filtration with filter paper, then using purified water or distilled water to wash the modified shrimp shell to neutral, and conducting drying, thus obtaining the final sodium hydroxide modified shrimp shell. The method employs sodium hydroxide to modify shrimp shell so as to prepare the modified material enabling alga settlement, the preparation method is simple and feasible, has no need for large process equipment, and is convenient for operation. The prepared sodium hydroxide modified shrimp shell can effectively remove alga, also can remove algal toxin from water, has little influence on the environment, and does not affect the aesthetics of water, thus being suitable for algae removal of small-scale landscape water with blue alga as the dominant species.

Description

technical field [0001] The invention relates to a modified material which can be used for removing cyanobacteria and algae toxins in water bodies, and is suitable for removing algae and algae toxins in small landscape water bodies where cyanobacteria is the dominant species. Background technique [0002] my country is one of the countries with the most serious outbreaks of cyanobacterial blooms, the widest distribution and the largest variety of cyanobacterial blooms in the world. After the outbreak of cyanobacteria blooms, the accumulated algae cells will release a large amount of cyanotoxins, odorous substances and other toxic and harmful substances after the death of the accumulated algae cells, causing pollution of various derivatives, causing serious harm to the ecological environment, and even endangering the health of humans and animals , which has become a major environmental problem. [0003] At present, the control methods for cyanobacterial blooms can be roughly ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/52C02F1/50
CPCC02F1/50C02F1/5236C02F2303/04
Inventor 王红强唐东山房琦邓启湘汪弘
Owner NANHUA UNIV