| abstract |
The application discloses a method for producing biological feed by waste amino acid fermentation liquor, which comprises the following steps: s1 pretreating the amino acid fermentation liquor, wherein the pretreatment comprises adding 5-6% of glucose into the amino acid fermentation liquor and adjusting the pH value to 6-6.5 to obtain a culture solution; s2, pretreating a basic bacterial liquid, wherein the pretreatment of the basic bacterial liquid comprises domestication treatment of 20% of bacillus subtilis, 10% of plant lactic acid bacteria, 60% of candida utilis and 10% of aspergillus oryzae; obtaining a bacterial liquid; s3 adding the bacterial liquid into the culture liquid and culturing for at least 72 hours to obtain basic bacterial liquid; s4 adding substrate in the basic bacterial liquid in a medium proportion, mixing uniformly, adding into a fermentation tank, fermenting for 3-5 days, keeping the temperature at 30-35 ℃ in the fermentation process, and obtaining the biological feed raw material with the oxygenation rate of more than 40%; s5 the raw material of the biological feed is dried and crushed to obtain the biological feed. The method solves the problems that the waste gas and liquid of the existing amino acid fermentation liquid can not be reused, waste is caused, and the waste gas and liquid are discharged into the environment to cause environmental pollution. |