Modified red soil for removing cyanobacteria and preparation method

A red soil and modified technology, applied in chemical instruments and methods, water/sewage treatment, sterilization/microdynamic water/sewage treatment, etc. High cost and other issues, to achieve the effect of simple preparation method, low preparation cost and improved removal rate

Active Publication Date: 2015-03-25
江西省水利科学研究院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, at present, the limitations of various methods are very obvious. Ultrasonic algae removal, chitosan modified soil algae removal and mechanical salvage methods are all costly, and it is difficult to continue to promote large-scale use. The biological algae control effect of silver carp and bighead carp is slow and the actual effect There is still a lot of controversy, so it is imminent to develop a

Method used

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  • Modified red soil for removing cyanobacteria and preparation method
  • Modified red soil for removing cyanobacteria and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A modified red soil for removing cyanobacteria, in parts by weight, it consists of the following raw material ratios:

[0040] 32 parts red soil

[0041] Polyepichlorohydrin-dimethylamine 5 parts

[0042] Polyferric sulfate 5 parts

[0043] 958 parts of water.

[0044] Further, the mass content of active aluminum in the red soil is 5-15%, the mass content of active iron is 4-10%, the mass content of organic matter is 0.2-1%, and the mass content of total phosphorus is 0.01-0.03%. The polyepichlorohydrin-dimethylamine has a molecular weight of 150,000-250,000, and the total iron mass content of the polyferric sulfate is 18.5-21%.

[0045] A method for preparing modified red soil for removing cyanobacteria, comprising the following steps:

[0046] Step 1, weighing 5 g of polyepichlorohydrin-dimethylamine, adding water and stirring to dilute to 20 g / l, to obtain polyepichlorohydrin-dimethylamine mother liquor;

[0047] Step 2, weighing 5 g of polyferric sulfate is dil...

Embodiment 2

[0056] The modified red soil for removing blue-green algae in the present embodiment, by weight, it is made up of following raw material proportioning:

[0057] Red soil 20 parts

[0058] Polyepichlorohydrin-dimethylamine 1 part

[0059] Polyferric sulfate 1 part

[0060] 972 parts of water.

[0061] Further, the mass content of active aluminum in the red soil is 5-15%, the mass content of active iron is 4-10%, the mass content of organic matter is 0.2-1%, and the mass content of total phosphorus is 0.01-0.03%. The polyepichlorohydrin-dimethylamine has a molecular weight of 150,000-250,000, and the total iron mass content of the polyferric sulfate is 18.5-21%.

[0062] A method for preparing modified red soil for removing cyanobacteria, comprising the following steps:

[0063] Step 1, weighing 1 g of polyepichlorohydrin-dimethylamine, adding water and stirring to dilute to 20 g / l, to obtain polyepichlorohydrin-dimethylamine mother liquor;

[0064] Step 2, weighing 1 g of ...

Embodiment 3

[0068] The modified red soil for removing blue-green algae in the present embodiment, by weight, it is made up of following raw material proportioning:

[0069] Red soil 100 parts

[0070] Polyepichlorohydrin-dimethylamine 25 parts

[0071] Polyferric sulfate 30 parts

[0072] 875 parts of water.

[0073] Further, the mass content of active aluminum in the red soil is 5-15%, the mass content of active iron is 4-10%, the mass content of organic matter is 0.2-1%, and the mass content of total phosphorus is 0.01-0.03%. The polyepichlorohydrin-dimethylamine has a molecular weight of 150,000-250,000, and the total iron mass content of the polyferric sulfate is 18.5-21%.

[0074] A method for preparing modified red soil for removing cyanobacteria, comprising the following steps:

[0075] Step 1, weigh the polyepichlorohydrin-dimethylamine of 25 g, add water and stir and dilute to 20 g / l, obtain polyepichlorohydrin-dimethylamine mother liquor;

[0076] Step 2, the polymerized fe...

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Abstract

The invention discloses modified red soil for removing cyanobacteria. The modified red soil comprises raw materials in percentage as follows: red soil, polyepichlorohydrin-dimethylamine, polymeric ferric sulfate and water. A preparation method of the modified red soil comprises steps as follows: 1, weighing out the polyepichlorohydrin-dimethylamine, and diluting the polyepichlorohydrin-dimethylamine with water through stirring to obtain a polyepichlorohydrin-dimethylamine mother solution; 2, weighing out the polymeric ferric sulfate, and diluting the polymeric ferric sulfate with water to obtain a polymeric ferric sulfate mother solution; 3, weighing out the red soil, and dissolving the red soil after drying and grinding to obtain a red soil mother solution; 4, adding the polyepichlorohydrin-dimethylamine mother solution and the polymeric ferric sulfate mother solution to the red soil mother solution, and diluting the mixture with water to obtain the modified red soil. According to the modified red soil, the polyepichlorohydrin-dimethylamine and the polymeric ferric sulfate are used as flocculating agents, the red soil is used as a flocculation aid, and active aluminium and active iron, which are higher in content, of the red soil are used as coagulants, so that the cyanobacteria removal rate is increased, and secondary pollution cannot be caused after the cyanobacteria are removed. The preparation method is simple, low in cost and simple to operate.

Description

technical field [0001] The invention relates to a material for removing cyanobacteria in a water body and a preparation method thereof, in particular to a modified red soil for removing cyanobacteria and a preparation method thereof. Background technique [0002] With the continuous development of my country's industrialization, the frequency and scope of water pollution, especially water eutrophication, have increased significantly. Cyanobacterial blooms are a significant feature of water eutrophication. The mass reproduction of algae that form blooms is a sensitive sign of water quality changes and the main appearance of water eutrophication. Algal blooms may produce toxic and harmful secondary metabolites (algae toxins and odorous substances), which are released into water bodies, posing a threat to aquatic organisms and even human health, causing odor problems in water bodies and aquatic products, and causing pungent odors in water bodies and aquatic products Unpleasant...

Claims

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Application Information

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IPC IPC(8): C02F1/52
CPCC02F1/50C02F1/5236C02F1/5263C02F1/56
Inventor 戴国飞方少文钟家有郭春晶楼倩张伟
Owner 江西省水利科学研究院
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