ST series sewage treatment plant Approved by CCS, EC, NK, DNV, classification ... 15-600 persons IMO MARPOL 73/78 ST series sewage treatment plantApproved by CCS, EC, NK, DNV, classificationSuitable to ... 10-600 personsIMO MARPOL 73/78ST series sewage treatment plantSerial products ST are imported the advanced technology HMWORTHY, ... persons and offshore platforms ST 1 marine sewage treatment plant