USA As Represented by Secretary of the Navy

Stuart H Brown

William E Schneider

Jack L McCrea

Steven A Stetz

William K Upton, Iii

Emily J Gotich

The integrity of membranes utilized on-board marine vessels to separate oil from oily waste water is monitored by conducting the cleansed waste water along a predetermined path through an enclosure within which a surface of such waste water during flow is exposed to a confined body of air so as to effect the extent of light absorbed therefrom into the waste water. Sensing the light remaining in the body of air produces signals from which membrane integrity may be determined based on the presence of an oil film on the air exposed waste water surface.

Monitoring waste liquid to determine membrane cleansing performance

Liquid waste generated aboard a maritime vessel is separated into oily and non-oily components for separate treatment to obtain flow streams having different waste contents. Those of the flow streams having waste content reduced by the treatment are discharged overboard while the other flow streams having concentrated waste content are subject to incineration.

Integrated liquid discharge system

A pulper includes a pulping chamber, a pulping mechanism, and a non-pulpas collection chamber attached to a bottom of the pulping chamber below a top of the pulping mechanism in an annular area outside of the pulping mechanism. The collection chamber includes a container with openings at first and second ends; a basket having an opening at a first end and disposed inside the container wherein at least a bottom portion of the basket includes perforations; a pipe connection located at the second end of the container; means for removing the basket from the container; and means for preventing material from entering a space between the basket and the container; wherein the first end of the container is inserted into the pulping chamber. The collection chamber does not interfere with the fluid flow around the pulping mechanism and can collect a relatively large amount of non-pulpables without requiring pulper shutdown.

Non-pulpables collection chamber with removable basket for solid waste

A solid waste pulper including a pulping chamber, oriented at an angle, hng a first inlet port for introducing solid waste material to be pulped, and a second inlet port in the pulping chamber for introducing water into the chamber. A blade assembly, preferably formed of a plurality of rotatable blades and a plurality of fixed blades, is mounted in the chamber for pulping the solid waste material introduced in the chamber, the water mixing with the pulped waste material to form a slurry. A sizing ring is provided in the pulping chamber through which the slurry must pass to be discharged, the sizing ring having a predetermined area for limiting the size of the pulped waste material in the slurry which can be discharged from the pulping chamber. The pulper also includes a discharge port coupled to the pulping chamber for discharging the slurry containing the pulped waste material, the discharge port having a predetermined cross-sectional area which is smaller than the area of the sizing ring, thus limiting the maximum flow of slurry discharged from the pulping chamber.

Growing community of inventors

Severna Park, MD, United States of America

Stuart H Brown