... drainage system, the vacuum system brings more advantages for the ship design, such as more flexibility,shorter time limit for a ... ;Water saving, perfect flush result without residues;HUANGPU RIVER CRUISE SHIP PROJECTHuangpu River cruise ship is used for tourism service during Shanghai World Expo ... collect and deposit the sewage from the toilet on the ship. There is one BZ-F30 type lobe pump unit ( ...