Compared to the ocean ship,the inland river ship has he characteristics of small space, can not be continuouspower supply and other characteristics, our company and Harbin Engineering University,developed a new generationof SWCM (N) type marine sewage treatment plant.Device adopts wih anaerobic, biological contactoxidation, electricflocculation MBR . UV disinfection technology of the composite process to deal with the Inland Ship toiletBlackwater, Theindex of treated water is much better than requirements of tle IMO.MEPC.159 (55) and GB 10833-89, and areapprovedby Jiangsu Provincial maritime bureau.