Liquid purification or separation – With gas-liquid surface contact means – With separator
Reexamination Certificate
2006-09-19
2006-09-19
Cecil, Terry K. (Department: 1723)
Liquid purification or separation
With gas-liquid surface contact means
With separator
C210S170050, C210S194000, C210S259000, C210S321690, C210S242100
Reexamination Certificate
active
07108782
ABSTRACT:
Shipboard wastewater undergoes treatment within an automatic system based on membrane bioreactor technology. Bacteria that are naturally present in the raw waste stream break down during treatment and consume organic material in the wastewater. Membranes in a bioreactor within which the wastewater is treated provide a physical barrier, retaining the bacteria and other solids while producing an effluent sufficiently clean to be discharged directly overboard. To ensure adequate treatment, a flow-through ultraviolet disinfection unit is employed in the system downstream of filtration. Inorganic and other non-biodegradable material that accumulates in the bioreactor with time is removed automatically to maintain the desired solids concentration in the bioreactor. Using selective control established through the operator interface, the system can be operated under automatic process/standby mode or maintenance mode, and sludge concentrate can be directed either overboard, to an onboard storage tank or to undergo further treatment within a concentration device or destruction within an incinerator for example, depending on the ship's equipment, location and operating conditions.
REFERENCES:
patent: 5275732 (1994-01-01), Wang et al.
patent: 6361695 (2002-03-01), Husain et al.
Benson John H.
Higgins James E.
McCrea Jack L.
Schauer Peter J.
Cecil Terry K.
Shuster Jacob
The United States of America as represented by the Secretary of
LandOfFree
Marine vessel onboard wastewater treatment system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Marine vessel onboard wastewater treatment system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Marine vessel onboard wastewater treatment system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3592864