Abstract:In order to comprehensively utilize waste water of MGS, utrafiltration membrane was used for removing microbe in fermented broth in glutamic acid feremtation. The results showed that 98% of bacteria in the fermentation liquid were removed. In addition, the average removal rates of COD and NH4+-N were 49% and 18%, respectively, while amino acids could wholly pass through the membrane. Then the used utrafiltration membrane needed to be washed by the lye, oxidation solution and acidic fluid in turn. The best washing agents were 20 g/L of NaOH, 30 g/L of bleaching water and 15 g/L of HNO3.
