Equipment Design of the Ship Sewage Treatment

A set of equipments for ship sewage treatment, which has been designed according to the characteristics of ship sewage with the advanced sewage treatment technique and the modern automatic control technique, makes ship sewage treatment miniaturized and automatized. The device takes biological method, + MBR Membrane Bioreactor, as the main treatment technique. After the reliability of the technique was justified through the simulation experiment, the mechanical structure of the equipment, including the detailed dimensions and relevant accessories, was designed according to the number of people. Besides, through PLC programmable controller the automatic operation and the automatic alarm have been achieved. As the result of the sewage treatment testing of the prototype, COD removal rate was above 92%, BOD5 removal rate above 98%, SS removal rate above 97%, the test value of heat-resistant Escherichia coli zero, totally meeting the IMO emission standards.