Study on microbial deodorization treatment of tilapia processing wastewater

Hainan tilapia processing wastewater was treated with Aspergillus oryzae, Bacillus subtilis and biological deodorant. The experiment process had investigated the protein residues, the content of TVB -N and the change of pH value in the deodorization process. Results showed that, the wastewater’s odor treated by Bacillus subtilis with adding 3% of glucose was the least, the content of protein in wastewater reduced from 4.5g/100mL of control group to 0.8g/100mL, the content of TVB-N reduced from 0.91g/100mL of control group to 0.04g/100mL after treatment with the decline rate of 95% . A new way for the tilapia processing waster treatment and resource was explored.