NOVELTY - Immobilized microorganism sewage treatment process, by soaking modified foam in sodium hydroxide, washing soaked modified foam, neutralizing washed foam, adding epoxy chloropropane to neutralized foam, washing and neutralizing carrier, adding to-be-immobilized microorganisms, carrier and activated sludge to reactor, adding industrial wastewater/sewage to impregnated carrier, performing acclimatization reaction, adding immobilized microorganisms, acclimatized liquid and industrial wastewater and performing biological treatment under aeration conditions.    USE - The process is useful for performing sewage treatment using immobilized microorganisms (claimed).    ADVANTAGE - The process enables rapid sewage treatment as the microrogansims used in the treatmnet process have high microbial activity, fast breeding and expansion capacity, requires small land area for operating the treatment process, is cost-effective and convenient to operate and manage, has high treatment efficiency, strong degradation ability. The sewage treatment plants and equipments can be shut down and started wihtout influencing sewage treatment effect.    DETAILED DESCRIPTION - Immobilized microorganism sewage treatment process, involves (a) preparing microorganism immobilized carrier by soaking modified foam in 20% sodium hydroxide solution, washing/rinsing soaked modified foam using water, neutralizing washed foam using 10% hydrochloric acid, adding epoxy chloropropane to neutralized foam, again washing obtained carrier using water, and neutralizing the carrier using hydrochloric acid until the carrier becomes neutral, where the carrier has optimum pore size of 0.5-0.9 mm, water content of 2500-3000%, porosity of 98%, surface area of ?? 100-120 m2/g and immobilized microbial load up to 18-56 g/l, (b) adding to-be-immobilized microorganisms, carrier and activated sludge as inoculum to reactor to obtain impregnated carrier haivng pH of 7-8, adding industrial wastewater or sewage to the impregnated carrier and performing acclimatization reaction under conditions such that microbial load capacity reaches 10-25 g/l or more, and (c) adding and mixing obtained immobilized microorganisms, acclimatized liquid having pH of 7-9 and industrial wastewater, performing biological treatment under aeration conditions, drawing out water samples from the reactor and measuring wastewater treatment effect.