Abstract:
An automatic dual-mode shipboard wastewater treatment system employing ozone for disinfection of the primary effluent. Solids are removed and pumped, for example, to the ship's boiler or other equipment for incineration, while the liquid waste is pumped through a series of ozone reactors and then to a holding tank from which it is discharged overboard, after accumulating to a predetermined level. The system operates continuously by recirculating the effluent, during low flow periods, between a second holding tank and the ozone reactors.
Abstract:
A method is provided for rapidly producing a treated waste mixture separable into a disposable mass of solids and a hygenic effluent of relatively low coliform count. The method of treating aqueous mediums involves steps wherein a mixture of aqueous medium and four chemical additives, plus, if desired, a pH control agent, are established as a mixture in a holding zone, the solids of the mixture having a particle size resulting from recirculation between the holding zone and a zone adapted to effect coarse disintegration of any solids exceeding a predetermined size, passing the mixture thru an airtight liquid flow system under conditions to maintain solids in suspension and then separating the liquid portion thereof from the solids associated therewith for disposal as a hygenic effluent.
Abstract:
A method for waste treatment including the steps of and the associated apparatus for removing large solid waste from the influent raw sewage, transmitting the large solid waste to an incinerator, subjecting the resultant liquor to centrifuging to separate additional suspended solids therefrom, passing the additional suspended solids to the incinerator, subjecting the remaining clarified liquid to ozonation to entrap and bubble out remaining solids, to oxidize residual organic contaminants in the liquid, and to disinfect the liquid, and transmitting the solids to the incinerator. The effluent liquid resulting from ozonation can be recycled or discharged into a suitable receptacle, or it may be treated further by activated charcoal and/or reverse osmosis or similar tertiary treatment technique before recycling or discharging.
Abstract:
A marine sewage disposal device connectable to a toilet and flushed by water, in which the sewage is macerated to small particle size, subjected to heat and electric current to destroy coliform bacteria, and subsequently filtered to separate liquids from solids prior to being discharged. Power requirements are relatively low, in the order of 2 to 5 amperes at 110 volts A.C., or less, thereby permitting the device to be used on relatively small craft having minimal generating equipment, such as a standard generator arranged to bypass the usual voltage regulator.
Abstract:
A system and method for destroying waste including garbage, organic trash and sewage in which the waste products are initially combined in an emulsifier, grinder, or shredder at the source such as a residential dwelling or business establishment and pumped through present sewage lines to a slurry tank. The basic system can also be utilized on marine, land and air vehicles. The enriched slurry mixture of waste is pumped into a reactor chamber where through an electrolitic reaction it causes the slurry to produce its own pressure achieving the by-products of high pressure steam to drive a turbine-driven electrical generator and sterilized water with only a residue of ash being produced. The by-product of electricity may be utilized for heating the slurry mixture in the reactor while providing electrical power for other uses. Excess condensate from the steam may then be collected and utilized as sterilized water. The system is designed for use at the municipal level to combine various sources of organic-type wate, such as garbage, trash, sewage, to a common disposal point in the community which produces an ash residue with by-products of power and sterilized water being achieved from the total system. The system is also designed in its basic concept to be utilized on marine, land and air vehicles.
Abstract:
Apparatus for disposal of human waste received from toilets and other like disposable waste products with particular utility in passenger carrying vehicles such as waterborne vessels. The method of the apparatus of the invention involves the steps of passing a waste material, such as sewage, immediately upon generation, from a toilet to a filtration area, separating the sewage, primarily fecal solids and paper solids present in an aqueous medium by deposit on a moving porous medium through which the aqueous medium passes to a filtered liquid accumulator, moving said porous medium to carry the deposited solids through a thermal destructor chamber wherein the viable material is destroyed and solids are converted to inert ashes and separately discharging inert ash and gases produced in said thermal destructor chamber. By proper design of the porous media a given amount of liquid can also be carried to the thermal destructive zone wherein it will be thermally destroyed permitting a balance to be obtained in the reservoir. Additions of make up water can be by level control as well.
Abstract:
A self-contained waste treatment system includes a bowl for receiving liquid and solid wastes and a macerator associated with the bowl for macerating the solid wastes and pumping the resulting mixture of liquids and divided solids to a receiving tank. An upstanding, tubular filter is mounted in the receiving tank and surrounds an opening in a bottom wall of the tank. Within the tubular filter a tubular magazine is positioned having a closed upper end, an open lower end and a series of openings through a lower section of its side wall. The magazine is also provided with a nipple at its lower end which is received in an outlet from the receiving tank and a filter pad is received in the magazine and lies across its open lower end. A stack of chemical additive tablets, such as calcium hypochlorite, are received in the magazine with the lower most tablet resting upon the filter pad. With this construction the mixture of liquid and solid wastes pumped to the receiving tank are separated by the tubular filter with the solids being retained in the receiving tank and the liquids passing through the filter to the tubular magazine. As the liquids enter the magazine through the opening in the lower end thereof pressure in the magazine builds up, preventing the magazine from being flooded. The chemical additive tablets in the magazine therefore, are dissolved sequentially from the bottom of the stack as the liquid passes through the filter and out the discharge opening in the receiving tank.
Abstract:
In a shipboard system, wastewater is withdrawn from a storage tank and is comminuted to reduce the size of waste solids. Coagulant is added, and the wastewater is centrifuged. Solid wastes are incinerated. The liquid wastes are disinfected and dissolved organic material is adsorbed in activated carbon. An effluent of tertiary quality is discharged.
Abstract:
The method of treating waste materials such as aqueous sewage involves the steps of simultaneously comminuting and oxidizing waste suspended in an aqueous medium while said waste is being held under flow equalizing and Biochemical Oxygen Demand (B.O.D.) equalizing conditions, preheating aqueous waste withdrawn from said oxidizing zone for delivery to a radiant heating zone to a temperature level for pasteurization of said waste and above the vaporization temperature of water at the gas pressure maintained in said radiant heating zone, subjecting at least part of the preheated aqueous waste, introduced into said radiant heating zone under conditions to break up the liquid into droplet form, to direct radiant heat whereby the aqueous portion of said aqueous waste is immediately converted to vapor, the unsatisfied B.O.D. of the solid waste is substantially eliminated and viable material is destroyed, and separately discharging inert ash solids and the mixture of gases and vapor produced in said radiant heating zone.
Abstract:
A fluid treatment system in which a peristaltic pump employs concentric tubes to define separate flow paths for the treating agent and the material to be treated. In this manner, a single pump may be used to pump both fluids. The flow paths may merge either interior or exterior of the pump whereby a metered amount of treating agent is mixed with the fluid. A specific application is in waste disposal system in which deodorants or antifoaming agents are added to the waste products prior to final disposal.