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Method for preparing highly effective alga flocculating agent convenient for storing and transporting

A flocculant and high-efficiency technology, which is applied in the field of preparing high-efficiency algae flocculants that are easy to store and transport, and can solve problems such as inability to store and transport

Inactive Publication Date: 2008-02-13
RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the above-mentioned major improvements have been made in the clay algae removal technology, the previous clay algae removal technology has a common defect: that is, these clay modification methods need to be used and prepared on the spot, and cannot be transported or stored.

Method used

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  • Method for preparing highly effective alga flocculating agent convenient for storing and transporting

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment 1 is convenient to the preparation of the high-efficiency algae flocculant of storage and transportation 1

[0021] Weigh 100mg of chitosan, dissolve it in 1% hydrochloric acid solution, weigh 3.53g of kaolin, mix kaolin and chitosan solution, stir for 0.5h, put it into an oven at 70°C for 24h. The obtained solid is ground through a 180-mesh sieve to obtain the high-efficiency algae flocculant convenient for storage and transportation of the present invention.

Embodiment 2

[0022] Embodiment 2 is convenient to the preparation of the high-efficiency algal flocculant of storage and transportation 2

[0023] Weigh 200g of chitosan, dissolve it in 1% hydrochloric acid solution, weigh 2.27g of sand passed through a 100-mesh sieve, mix the sand with the chitosan solution, stir for 0.5h, and put it into an oven for 24h at 70°C. The obtained solid is ground through a 180-mesh sieve to obtain the high-efficiency algae flocculant convenient for storage and transportation of the present invention.

Embodiment 3

[0024] Example 3 Algae-removing effect of high-efficiency algae flocculant

[0025] Weigh 500 mg of the high-efficiency algae flocculant in Example 1, add it to 200 mL of algae liquid with a concentration of 5×106 cell / mL, put it on a six-way mixer, start stirring, and start timing at the same time. Stirring parameter is 100rpm rapid stirring for 3 minutes, then transferred to 30rpm and continuous stirring for 20 minutes, finally stop stirring and let stand. Samples were taken at about 3 cm below the liquid level every hour to measure the algal cell concentration, and the algal cell removal rate was calculated. The result is shown in Figure 1. It can be seen from Figure 1 that after 30 minutes of treatment, the algae removal rate has reached 90%, and after 240 minutes, the algae removal rate has reached 95%.

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Abstract

The present invention relates to a preparation method of the high-efficient algae flocculating thing, which is easy to be stored and transported, in particular to a preparation method for the high- efficient algae flocculating powder, which uses a kind of innoxious, easy for biological separating and low-cost natural macromolecule polymer clay and also uses some modern separating technology including drying and freezing. The algae flocculating powder produced by the method can be used for fathering seawater tide, freshwater sublimation as well as for wiping off the deleterious algae in the riverway and the waterworks. The present invention is characterized in high-efficiency, low-cost and easy to be stored and transported. The present invention belongs to the water treatment technology region.

Description

technical field [0001] The invention relates to a method for preparing a high-efficiency algae flocculant which is convenient for storage and transportation. Specifically, it is a method of preparing high-efficiency algae flocculant powder by using non-toxic, easily biodegradable and cheap natural polymer modified clay, and using modern separation technologies such as drying and refrigerated centrifugation. The algae flocculant prepared by the method can be used to control seawater red tides and freshwater blooms, and is also suitable for removing harmful algae in river courses and waterworks, and has the characteristics of high efficiency, low cost, convenient storage and transportation, and the like. The invention belongs to the technical field of water treatment. Background technique [0002] Eutrophication refers to the fact that a large amount of biological nutrients such as nitrogen and phosphorus are continuously discharged into slow-flowing water bodies such as lake...

Claims

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Application Information

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IPC IPC(8): C02F1/52
Inventor 潘纲袁宪正张木兰陈灏
Owner RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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