The invention discloses a method for treating waste bacterial liquid in the process of preparing
glucurolactone through a
fermentation method, and relates to the technical field of
glucurolactone production, the waste bacterial liquid concentrated through a
ceramic membrane is taken, the waste bacterial liquid is collected, the
volume concentration of
escherichia coli in the waste bacterial liquid is 20-50%, and the
total phosphorus content is 1500-2000 ppm; adding a flocculating agent into the filtrate, stirring, standing, then adding diatomite, and uniformly stirring to obtain a mixture, the flocculating agent comprising
citric acid and
chitosan; the mixture enters a diaphragm
filter press, and a
solid filter cake is obtained after filter pressing is finished. The problem of post-treatment of the waste bacterial liquid is solved, the bacterial liquid is high in
protein content, easy to decay and stink, incapable of being placed for a long time, not easy to transport and incapable of being subjected to
pollution discharge treatment, the bacterial liquid is prepared into a
solid state through an effective
flocculation method, the environment can be improved, filter cakes can be used for preparing
organic fertilizer, and enterprise benefits are increased.