| abstract |
The invention discloses a preparation method and application of a microbial inoculum for efficiently degrading COD (chemical oxygen demand), which comprises the following steps: step 1: screening strains, namely obtaining a strain capable of efficiently degrading Chemical Oxygen Demand (COD) by primary screening and secondary screening in waste water of a nicotinamide production workshop; step 2: observing the shape of the strain and identifying the strain; step three: preparing a liquid microbial inoculum; step four: and (4) immobilizing the microorganisms. The bacillus subtilis has the characteristics of efficiently reducing the Chemical Oxygen Demand (COD) of sewage, having no residual hazard to the environment and the like, is simple in strain culture, and simultaneously provides a method for preparing immobilized cells by using a composite material, a method for quickly preparing the immobilized microbial cells, can be repeatedly and continuously used, can effectively reduce the cost, and can be widely applied to sewage treatment and environmental protection. |