Our company based on the SBR technics ( sequencing batch reactor) developed a new kind matched equipment which can make up SBR many deficient; which can widely apply to all kind of sewage treatment plant.. the package sewage treatment plant principle is a kind of biochemical treatment which combine activated sludge microbiological method and new biological membrane manner. In treatment process, large bacteria and bacteria membrane update, adopt biological carrier, improve the contact efficiency of micro- organism and pollutant matter in sewage; the whole treatment equipment produce anaerobic-anoxia- aerobic three kind of environment take turns function, improve  purified water ability of different kind of microbial population, intensify organism removal and nitrogen and phosphorus removal function.