- SEWAGE TREATMENT PLANT MODERN BIOLOGICAL EQUIPMENT The new designed JOWA BIO STP (Sewage Treatment Plant) is made for automatic operation onboard ships in accordance with IMO MEPC2(VI) and meets all the requirements in Marpol 73/78 annex IV. JOWA BIO STP can handle all types of ships, sewage, black and grey water, black water only and galley water. The sewage can be led to the unit via both gravity and vacuum system. The grey water can also be led to the unit for sterilizing only. website: www.jowa.se e-mail: ¡[email protected] e-mail: [email protected] JOWA GERMANY GMBH website: www.jowa.de e-mail: ¡[email protected] JOWA HOLLAND e-mail: [email protected] website: www.jowa-consilium.com e-mail: [email protected] 26, Lorong G Telok Kurau e-mail: [email protected] JOWA (Shanghai) Marine Equipment Co.,Ltd. 5111 Luo Shan Road, Pudong New Area e-mail: [email protected]