Preparation method of compound microbial flocculant for cyanobacterial bloom
A microbial flocculant and cyanobacteria bloom technology, applied in the direction of microorganism-based methods, biochemical equipment and methods, microorganisms, etc., can solve the problems of less research on eutrophication of water bodies, achieve good application prospects, high yield, and easy Inactivation effect
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[0028] Determination method of flocculation: add 0.4g kaolin to a 150mL beaker, add 80ml distilled water, adjust the pH to 4.5, add 4mL of 1% CaCl 2 Solution and 1.5mL complex flora fermentation broth, then add distilled water to 100mL. Stir for 2 minutes with a constant temperature magnetic stirrer at 200 r / min at room temperature, and let stand for 5 minutes at room temperature. Draw the supernatant at 50mL, measure the optical density value ODi at a wavelength of 550nm with a UV-visible spectrophotometer (type 752), and replace the complex flora fermentation broth with 2mL of uninoculated fresh fermentation medium, and other operating conditions are complete. The same experiment was used as a control, and the optical density value OD was measured 0 .
[0029] The formula for calculating the flocculation rate is:
[0030]
[0031] Screening and identification of efficient flocculation bacteria:
[0032] (1) The strains were screened from the activated sludge, and the ...
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