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High efficiency algae flooculation agent, method for treating red tide and plakton bloom using same

A flocculant and algae cell technology, which is applied in the field of preparation of algae flocculant, can solve the problems of large amount of clay dosage and large amount of sludge production

Inactive Publication Date: 2005-03-02
BEIJING GREEN ECO ENVIRONMENTAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The present inventor once proposed a patented technology (application number: 01134528.4) to flocculate and settle algae cells in water bodies based on hydrous magnesium silicate (such as sepiolite) with clay (application number: 01134528.4), but the dosage of clay is relatively Large, the amount of sludge generated is also relatively large

Method used

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  • High efficiency algae flooculation agent, method for treating red tide and plakton bloom using same
  • High efficiency algae flooculation agent, method for treating red tide and plakton bloom using same
  • High efficiency algae flooculation agent, method for treating red tide and plakton bloom using same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The preparation of embodiment 1 efficient algae flocculant 1

[0019] The chitosan used in this example 1 is the industrial grade chitosan produced by Qingdao Haisheng Biological Engineering Co., Ltd. Weigh 100 mg of chitosan, add 10 ml of 1% HCl solution, and after the chitosan is completely dissolved, add distilled water to dilute to 100 ml to obtain a 1 mg / ml chitosan solution. Take 10ml of chitosan solution, add 90mg of clay (that is, modifying agent: clay ratio of 1:9), and ultrasonically treat for 1min to mix evenly, and then the algae flocculant of the present invention is prepared.

Embodiment 2

[0020] Example 2 Example 1 of algae flocculant flocculation to remove algae

[0021] Get 0.5ml mixed solution of algae flocculant prepared in Example 1, add 500ml and prepare the concentration to be 5×10 6 The algae liquid of cell / ml (the algae liquid is prepared with 0.5% NaCl solution), is placed on the six-coagulation mixer and starts stirring immediately, and starts timing simultaneously. Stirring parameters are: rapid stirring at 100 rpm for 3 minutes, then transfer to 30 rpm and continue stirring for 20 minutes, and 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 as figure 1 (Dosing amount is 0.010g / l). Depend on figure 1 It can be seen that after 30 minutes of treatment, the algae removal rate has exceeded 80%, and after 240 minutes, the algae removal rate has exceeded 97%, which is close to complete algae rem...

Embodiment 3

[0022] Example 3 Comparison of flocculation efficiency of high-efficiency algae flocculants with other clay and algae flocculants

[0023] According to the same operating conditions as in Example 2, different clays or algae flocculants were added according to the dosing amount of 0.010 g / l, and the algae removal rate at different settling times was measured. The result is as figure 2 , In such a small dosage, other flocculants have no flocculation and algae removal effect, but this high-efficiency algae flocculant can effectively remove algae.

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Abstract

The present invention provides a method for preparing high-effective algae flocculant from non-toxic, easy-to-bio-degrade, cheap, natural macromolecular polymer modified clay. Said modification can obviously raise flocculation algae-removing capability of different clay, the algae-removing rate of various clays can be 20-95% Said high-effective algae flocculant can be used for controlling and treating large area red tide, fresh water algal bloom, and also can be used for removing harmful algae in river and drinking water plant.

Description

technical field [0001] The invention relates to the preparation of an algae flocculant and a method for controlling seawater red tide and freshwater bloom. Specifically, it uses natural, non-toxic, and biodegradable high-molecular polymer modified clay that will not cause secondary pollution to the environment to produce a type of high-efficiency algae flocculant, and use it to treat seawater red tide, freshwater Algal blooms, harmful algae pollution methods for river courses and drinking water plants. Background technique [0002] The outbreak of harmful algae in natural seawater, lakes and rivers (commonly known as red tide in seawater and algae bloom in freshwater) has become a global environmental pollution problem. It not only seriously deteriorates water quality, depletes oxygen, and causes a large number of fish to die, but also algae toxins can enter the food chain and cause human diseases and even death. So far, there is no technology in the world that can safely,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/56
Inventor 潘纲邹华
Owner BEIJING GREEN ECO ENVIRONMENTAL TECH
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