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
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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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