First,photosynthetic bacteria were acclimated,and the growth density curve of photosynthetic bacteria was drawn.It was found that the optimal time for harvesting flocculant mycelium protein was 10 d.The waste water of 1 L perylene dyes was taken at room temperature and the optimal treatment conditions were obtained,that is,the pH was adjusted at 7.5,0.8 g calcium carbonate was added,the optimal dosage of basic nutrient solution was 6 mL,the treat-ment time was 10 d,and the flocculating bacteriome protein output reached 112.4 g/L(waste water).Through the analy-sis and identification of thallus protein,the substance was found to be glycoprotein.Finally,after a month of feeding comparison experiment,it is proved that the flocculated mycelin protein can be used as fish feed.
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