System and method for cleaning a waste tank in an aircraft

A system for cleaning a waste tank in an aircraft, the system comprising:

• a service device,
• at least one spray nozzle having a spray nozzle head and a spray nozzle inlet, and
• a first adaptor for each of the at least one spray nozzle,
• wherein the service device comprises a descaling fluid tank, a service device outlet, a service device inlet, and a pump in fluid communication with the service device outlet,
• wherein the at least one spray nozzle is coupled with the service device outlet or the pump through a first conduit,
• wherein the spray nozzle head is configured to eject at least one descaling fluid jet into the waste tank,
• wherein the service device inlet is coupled with a second conduit configured to attach to a waste tank outlet,
• wherein the first adaptor is configured to couple with the at least one spray nozzle and comprises fastening means to attach the first adaptor to an opening of the waste tank in a substantially fluid-tight manner, and
• wherein the service device is designed to continuously circulate descaling fluid through the service device outlet, the first conduit, the at least one spray nozzle, the waste tank outlet, the second conduit and the service device inlet.

A method for cleaning a waste tank in an aircraft, the method comprising the steps of:

• attaching at least one spray nozzle having a spray nozzle head and a spray nozzle inlet to an opening of a waste tank in a substantially fluid-tight manner with a first adaptor;
• coupling the at least one spray nozzle to a service device outlet of a service device or a pump, which is in fluid communication with the service device outlet, through a first conduit;
• coupling a service device inlet to a waste tank outlet through a second conduit;
• and,
• continuously circulating a descaling fluid through the service device outlet, the first conduit, the at least one spray nozzle, the waste tank outlet, the second conduit, and the service device inlet by supplying the descaling fluid from a descaling fluid tank of the service device into the waste tank through the at least one spray nozzle and receiving descaling fluid from the waste tank outlet and feeding the descaling fluid into the descaling fluid tank,
• wherein the at least one spray nozzle head is configured to eject at least one descaling fluid jet into the waste tank.