Abstract: The invention relates to a system and method for treating wastewater onboard a marine vessel or other limited space application where wastewater treatment is required. In one embodiment of the invention, two polar opposite wastewater treatment processes are incorporated into the same treatment system. The system is a hybrid treatment unit that combines a conventional wastewater treatment using a moving bed biofilm reactor (MBBR) process-based biological treatment unit in combination with a novel electrochemical advanced oxidation process (EAOP) via an in-situ sodium hypochlorite recirculation. The clarified and disinfected effluent from this hybrid treatment unit is filtered to remove residual TSS. The filtered and disinfected effluent is discharged after dechlorination/neutralization. On-site maintenance disinfectant can be produced via the electrochemical/electrochlorination/electro-oxidation process and used for both treatment unit cleaning and disinfection.

Abstract: The invention relates to a system and method for treating wastewater onboard a marine vessel or other limited space application where wastewater treatment is required. In one embodiment of the invention, two polar opposite wastewater treatment processes are incorporated into the same treatment system. The system is a hybrid treatment unit that combines a conventional wastewater treatment using a moving bed biofilm reactor (MBBR) process-based biological treatment unit in combination with a novel electrochemical advanced oxidation process (EAOP) via an in-situ sodium hypochlorite recirculation. The clarified and disinfected effluent from this hybrid treatment unit is filtered to remove residual TSS. The filtered and disinfected effluent is discharged after dechlorination/neutralization. On-site maintenance disinfectant can be produced via the electrochemical/electrochlorination/electro-oxidation process and used for both treatment unit cleaning and disinfection.

Abstract: A composite laminate structure includes a cellular core and a first laminate layer coupled to the cellular core. The first laminate layer includes a first thermoplastic layer and a first fiber-reinforced polymer layer, where a first surface of the first fiber-reinforced polymer layer is thermally consolidated to a second surface of the first thermoplastic layer. A first surface of the first thermoplastic layer is directly in contact with and bound to a first surface of the cellular core by temperature reduction of the first thermoplastic layer below a glass transition temperature of the first thermoplastic layer while the cellular core is pressed against the first thermoplastic layer when the first thermoplastic layer is above the glass transition temperature of the first thermoplastic layer and the cellular core is below a temperature where materials of the cellular core flow or degrade.

Abstract: A composite laminate structure includes a cellular core and a first laminate layer coupled to the cellular core. The first laminate layer includes a first thermoplastic layer and a first fiber-reinforced polymer layer, where a first surface of the first fiber-reinforced polymer layer is thermally consolidated to a second surface of the first thermoplastic layer. A first surface of the first thermoplastic layer is directly in contact with and bound to a first surface of the cellular core by temperature reduction of the first thermoplastic layer below a glass transition temperature of the first thermoplastic layer while the cellular core is pressed against the first thermoplastic layer when the first thermoplastic layer is above the glass transition temperature of the first thermoplastic layer and the cellular core is below a temperature where materials of the cellular core flow or degrade.

Abstract: A ballast tank circulation system having inlet and outlet piping and means for adding one or more halogens in controlled amounts to the water within the ballast tank. One or more eductors are positioned within the ballast tank to mix and circulate water within the ballast tank. A recirculating pump is located externally to the ballast tank to ingest water from the ballast tank and discharge a stream of pressurized water. The recirculating pump receives water from the ballast tank through an inlet line that taps into the outlet piping from the ballast tank. An outlet line transport the pressurized water to the ballast tank. The eductor draws in the pressurized water entering the ballast tank and emits a high pressure jet of water that circulates within the ballast tank thereby circulating the chemical content of the ballast water. Test streams of water from the ballast tank can be analyzed to determine the level of at least one of halogens in the test stream to provide a halogen content signal.

Abstract: A system and process for treating ballast water within an ocean going vessel by generating hypochlorite for treating the ballast water. The system comprises one or more hypochlorite electrolytic cells in fluid communication with ballast water. The total organic carbon content of the ballast water is ascertained and the amount of hypochlorite generated is modulated in response to the total organic carbon content of the ballast water. In one embodiment the system comprises a total organic carbon analyzer for measuring total organic carbon content. In one embodiment of the process of the invention, hypochlorite production is modulated so that the residual halogen-containing oxidizing agent is maintained in the ballast water. In another embodiment of the process, hypochlorite production is modulated to maintain a weight ratio of hypochlorite to total organic carbon in the ballast water ranging from about 1.0 to about 3.0.

Abstract: In a process for producing sodium hypochlorite in an electrolytic cell comprises forming an aqueous based chloride solution with a chloride salt; controlling the concentration of chloride within the solution to an amount comprising less than 25 g/L chloride salt; piping the salt solution to the electrolytic cell, the electrolytic cell comprising an anode and a cathode, the cathode comprising a metallic base material, a first coating on the metallic base material and a second non-conductive ceramic coating on the metallic base material. The chloride solution is then in contact with the anodes and cathodes and an electric current is sent throughout the electrolytic cell to produce hypochlorite. During this process the electric current is controlled so that the power consumption is less than 2.5 kWh per pound of hypochlorite produced and the resulting cell efficiency comprises less than 2.5 kg of chloride salt consumed for every 1 kg of hypochlorite generated.

Abstract: A method and system of producing a disinfecting solution comprising directing feed water at a predetermined flow rate into a dosing storage tank; circulating the feed water from the dosing storage tank through one or more disinfectant containers and back into the dosing storage tank. Preferably, a disinfectant within the one or more disinfectant containers comprise dissolve characteristics to form a disinfecting solution when dissolved in the feed water. The flow rate of feed water directed into the dosing storage tank and circulated through out the disinfecting is predetermined and controlled to match the dissolve characteristics of the disinfectant within one or more disinfectant containers. Controlling the amount of feed water maintains a substantially consistent concentration of disinfecting solution throughout the dosing storage tank.

Abstract: An improved electrolyzer is disclosed herein. The electrolyzer includes a housing having an inlet and an outlet at a common end. Within the housing are disposed electrode elements, and a passageway that connects the inlet to the outlet. In accordance with the improvement disclosed and claimed herein, a divider is disposed in the fluid flow passageway between the inlet and outlet. It serves to cause fluid entering the inlet to flow through one section of the passageway, and then through another section of the passageway before exiting through the outlet.