Abstract: A filtration system, especially for use in aquaria has a lower or first chamber, a middle or second chamber and an upper or third chamber with an interconnecting valve to provide fluid communication therebetween. A microfilter is disposed between the first and second chambers. The upper or third chamber may be divided into two separate parts; one of which parts forms a gravel filter, and the other of which parts forms a pump conduit between the valve and an outlet of the system for connection to a suction pump. Alternatively, a separate pump conduit may be used.

Abstract: The invention is an improved controlled natural purification system for an advanced wastewater treatment and protein conversion and recovery. The system provides for treating municipal wastewater and associated organic industrial discharges anaerobically and aerobically. The system consists of such treatments in a tank complex where the waste organics are reduced to inorganic forms available for microalgae culture in tanks uniquely designed for rapid growth. The system includes a recovery mechanism to recover the algae for food purposes. Utilizing organic wastewater as the renewable resource, the system has the potential to develop from a wastewater treatment process that removes excess nutrients, producing reusable water and a commercially valuable algal by-product, to large scale algae farming cost-effectively producing millions of tons per year of sterile, stable, high protein algal foodstuff.

Abstract: There is provided a sewage treatment apparatus particularly intended for marine use where the apparatus is subject to tilting as a result of pitching and rolling of the ship. The apparatus includes an oxidation tank having a sewage liquor outlet incorporating a discharge weir. This weir is disposed at the center of a horizontal plane across the interior of the tank and containing the discharge weir, so that the above tilting of the tank substantially does not affect the rate of sewage liquor discharge and therefore substantially does not result in surging in the flow of sewage liquor from the oxidation tank to a settlement chamber. Such surging could adversely affect the maintenance of quiescent conditions in the settlement chamber. The settlement chamber is substantially fully enclosed and has a clarified liquid outlet incorporating an upstanding discharge weir presented coaxially by a top wall of the chamber.

Abstract: A split flow water treatment plant includes a settling basin comprising a pair of banks of generally horizontally extending settling tubes and an inlet baffle comprising a plurality of parallel vertical perforated sheets upstream of and adjacent to each of the banks. An inclined diverting plate extends from the downstream end of the lowermost tube in the first of the banks to the upper upstream end of the inlet baffle adjacent the second bank. The distribution of flow between the banks may be regulated by an adjustable weir or by water level control.

Abstract: A filtration and purification apparatus for use in water lines of both domestic and industrial applications, wherein water must be purified and filtered prior to use--particularly with respect to human consumption thereof. The filter/purifier comprises a housing having an inlet port which discharges into a filter chamber, wherein the incoming water passes through a filter member into an adjacent metering compartment which controls the flow of water both through an outlet port and a communicating purifying chamber, the purifying chamber including a predetermined amount of iodine crystals stored therein.

Abstract: The discharge end portion of a sewage delivery tube is surrounded by the input end portion of a conveyor pipe. A long, flat strip of consumable filter material is inserted through the annular space between them and into the conveyor pipe. Prior to this insertion, however, the filter strip is shaped and fastened into the form of a closed tube. The conveyor pipe discharges into an incinerator equipped with means for breaking the sewage sludge into burnable droplets. The conveyor pipe is supported over a liquid-collecting funnel and is perforated in the portion thereof that is over the funnel. A vibrator attached to the conveyor pipe oscillates it longitudinally; and ratchet teeth inside the conveyor pipe are oriented to cooperate with the vibrator to urge the filter-encased sludge toward the incinerator.

Abstract: Waste water containing particulate matter is saturated with air or other gas by a dynamic mixer and ejected into a gravity filter system at a point above the filter media but below the water surface level. Upon entering the filter tank, the dissolved gas is released, forming small bubbles on filterable particles to float these particles to the surface for removal. The system further includes a back pressure valve at the sewage inlet port which, if obstructed, is automatically flushed. During the backwash cycle, the water level above the filter bed may be lowered to the level of a wash-through zone, and filtered water then pumped upward through the filter media, thereby carrying particles from the filter media out through the wash-through zone.

Abstract: An apparatus for the separation of the components of an aqueous concrete grout obtained from washing operations of automotive concrete mixers in a washing station comprising two tanks connected in series, into the first of which are mounted means to separate in sequence and to discharge gravel and crushed stones and then sand, while into the second tank means are provided to perform the separation of the cement from the water by decantation and means to collect and discharge said cement out of said tank, said means consisting of a longitudinal endless conveyor carrying transverse scraping bars sliding along the bottom of said tank, a pump to suck the purified water from said second tank and to convey it until the washing station to be distributed into the drums of the mixers from which is discharged into the inside of a first unit of the first tank provided to separate the gravel and crushed stones means being also arranged at the end of the first tank to collect continuously the water from said tank and to c

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 modular filter assembly for cleaning and polishing of potable waters including a fabric turbidity removal module and an adsorptive taste and odor removal module. The modules are connected in series so as to have turbidity removal prior to taste and odor removal to extend the operating life of the taste and odor removal module. The turbidity removal module includes a porous, fabric material assembly which is of a rolled or wrapped construction which provides a large filtration area to prevent its clogging prior to the utilization of the adsorptive capabilities of the taste and odor removal module. The turbidity removal module includes a flow grid assembly having inner and outer flow grid to maximize the distribution of the fluid being filtered over the filtration area of the module and to assure lateral flow of the filtered fluid through the module.

Abstract: A sewage treatment and recycling system is disclosed wherein effluent is initially treated in a septic tank and then flows over a perforated splash pan to be distributed evenly over a removable filter. The filtered effluent then passes through a second filter and into a holding tank from where it is pumped to a water tank and chlorinated before being sprayed over the land surface or used for other purposes.

Abstract: A municipal incinerator plant incorporating a closed water system comprising a quencher tank and a clarifier tank. Waters from the quenching tank and clarifier tank are intermixed for alkaline-acidic neutralization, and waters from the clarifier tank are fed to a scrubber for supplying initial cleaning action to particulates entrained in incinerator exhaust. Clarifier tank likewise collects electrostatic precipitator fly ash. Quencher incinerated materials, particulates and fly ash are mutually combined for delivery to a dump vehicle or other conveyance means.