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 con...