Development of A Wastewater Treatment Biotechnology Based on Immobilised Microorganisms

The wastewater treatment processes involving immobilised microorganisms of the activated sludge have been studied. An experimental laboratory unit, which is a flow channel-like reactor operating in a recirculation mode with biomass attached to the nozzle, was developed and assembled. Plant residues of straw and sawdustwith the immobilised microflora of the activated sludge from the treatment plants of PAO Koks PJSC, Kemerovo were used as a nozzle. The unit consists of a cascade of tanks placed on a special stand. The results showed an increase in the number of microorganisms during the experiment and a decrease in the concentration of phenol, total ammonia and COD in the treated water, which is indicative of the effectiveness of water purification based on the technology. Keywords: sewage, phenol, activated sludge, microorganisms, immobilisation