Dual-Train Wastewater Reclamation and Treatment System

Abstract

A wastewater treatment system for use on marine vessels or land-based applications where wastewater is separated into two separate sources as graywater and raw sewage (blackwater). For blackwater, the treatment system incorporates five general phases (or zones): (1) screening, (2) clarifying, (3) filtering, (4) advanced oxidation, and (5) sludge reducing. For graywater, the treatment system incorporates three general phases (or zones): (1) screening (2) filtering, and (3) advanced oxidation. Each train of the treatment system (blackwater and graywater) can operate as a stand-alone system or can be assimilated into an integrated treatment train for both graywater and blackwater. This system is particularly useful in today's restrictive regulatory environment.

1 . A dual-train wastewater treatment system comprising:
 a blackwater treatment train, the blackwater treatment train comprising a blackwater advanced oxidation zone, and   a graywater treatment train, the graywater treatment train comprising a graywater advanced oxidation zone,   wherein effluent from the graywater treatment train is reused and effluent from the blackwater treatment train is held, discharged, destroyed or further treated.   
     
     
         2 . The dual train wastewater treatment system of  claim 1 , the blackwater treatment train further comprising:
 a blackwater screening zone in fluid communication with a blackwater clarifying zone,   the blackwater clarifying zone in fluid communication with a blackwater filtration zone, and   the blackwater filtration in fluid communication with a blackwater advanced oxidation zone.   
     
     
         3 . The dual train wastewater treatment system of  claim 1 , the graywater treatment train further comprising:
 a graywater screening zone in fluid communication with a graywater filtration zone,   the graywater filtration zone in fluid communication with a graywater advanced oxidation zone,   wherein effluent from the graywater advanced oxidation zone is available for reuse as technical water.   
     
     
         4 . The dual train wastewater treatment system of  claim 1 , wherein the blackwater advanced oxidation zone comprises a blackwater stirred reactor. 
     
     
         5 . The dual train wastewater treatment system of  claim 4 , wherein the blackwater advanced oxidation zone further comprises
 infusing the clarification zone effluent with ozone prior to entering the blackwater stirred reactor, and   oxidizing the clarified mixed liquor in the blackwater stirred reactor.   
     
     
         6 . The dual train wastewater treatment system of  claim 1 , wherein the blackwater advanced oxidation zone comprises an ultraviolet unit. 
     
     
         7 . The dual train wastewater treatment system of  claim 1  further comprising a sludge reduction zone. 
     
     
         8 . The dual train wastewater treatment system of  claim 7 , the sludge reduction zone comprising:
 a sludge reduction tank, the sludge reduction tank having a baffle that separates the interior of the sludge reduction tank into a sludge reduction region and an uptake region, wherein ozonated liquid enters the bottom of the sludge reduction region and sludge enters the top of the sludge reduction region, and wherein liquid in the uptake region can exit an outfall, the outfall located near the top of the uptake region.   
     
     
         9 . The dual train wastewater treatment system of  claim 1  wherein the graywater treatment train does not comingle with the blackwater treatment train. 
     
     
         10 . The dual train wastewater treatment system of  claim 1  wherein the first influent comprises graywater from kitchen operations. 
     
     
         11 . The dual train wastewater treatment system of  claim 3 , further comprising the act (step) of directing a second graywater filtration zone effluent to the blackwater treatment train. 
     
     
         12 . The dual train wastewater treatment system of  claim 3 , the graywater filtration zone comprises the act (step) of ultrafiltration. 
     
     
         13 . The dual train wastewater treatment system of  claim 3 , the graywater advanced oxidation zone comprises a graywater stirred reactor. 
     
     
         14 . The dual train wastewater treatment system of  claim 13 , the graywater advanced oxidation zone comprising the acts (steps) of:
 infusing the graywater filtration zone effluent (permeate) with ozone prior to entering the graywater stirred reactor,   oxidizing the graywater filtration zone effluent (permeate) in the graywater stirred reactor.   
     
     
         15 . The dual train wastewater treatment system of  claim 13 , the graywater advanced oxidation zone comprising the act (step) of disinfecting with ultraviolet light in a disinfection zone. 
     
     
         16 . The dual train wastewater treatment system of  claim 13 , further comprising the act (step) of directing a second graywater advanced oxidation zone effluent to the clarifying zone. 
     
     
         17 . The dual train wastewater treatment system of  claim 13 , further comprising the act (step) of discharging a third graywater advanced oxidation zone effluent. 
     
     
         18 . A dual train wastewater treatment system comprising:
 a blackwater treatment train, the blackwater treatment train comprising,   a blackwater screening zone in fluid communication with a clarifying zone,
 the clarifying zone in fluid communication with a sludge reduction zone, 
 the clarifying zone in fluid communication with a blackwater filtration zone, and 
 the blackwater filtration zone in fluid communication with a blackwater advanced oxidation zone, 
   a graywater treatment train, the graywater treatment train comprising,
 a graywater screening zone in fluid communication with a graywater filtration zone 
 the graywater filtration zone in fluid communication with a graywater advanced oxidation zone, and 
 a conduit for sending filtered solids from the graywater filtration zone to the sludge reduction zone.