| abstract |
The invention discloses a composite bacterial agent for treating sewage and a preparation method thereof, belonging to the technical field of sewage purification, and particularly relates to adding a composite bacterial solution to a mixed solution containing SA, agar double derivatives and polyglutamic acid, and then introducing calcium Elements are prepared to obtain a composite bacterial agent; the composite bacterial liquid contains lactic acid bacteria, yeast, and natto bacteria; the calcium element and SA form a cross-linked structure; in the preparation of agar double derivatives, firstly by reacting agar and OSA to make Agar mono-derivatives, and then agar bi-derivatives are prepared by reacting agar mono-derivatives with chloroacetic acid. The composite bacterial agent prepared by the invention has good mechanical properties, and the composite bacterial agent has good purification performance for sewage, the removal rate of COD in sewage is more than 85%, and the removal rate of ammonia nitrogen in sewage is more than 80%. |