Cell immobilization technique and its applications to the treatment of ammonia-nitrogen,hydroxybenzen and heavy metals wastewater are introduced in detail. It is put forward that the desired supports for immobilizing biomass must be satisfied with such conditions as safety to microorganism,stable property,favorable transfering character,high strength,long life,low price, etc . In order to develop cell immobilization technique in wide application of wastewater treatment,it is of great importance to search...