Abstract: A portable water filter has a first cylindrical container for holding a quantity of liquid to be treated. Included in the filter is a water filter cartridge which is mounted with respect to the first container for treating liquid which is pumped through the filtering material within the cartridge. A second container is coupled to the cartridge and arranged to receive the liquid pumped through the cartridge from the first container. The arrangement is such as to permit manual pumping of the liquid from that first container through the cartridge into the second container. Desirably, the pumping action is achieved by telescopingly inserting the second container within the first container. In addition to its direct treatment of the liquid, the filtering material serves to remove undesired color, taste and odor induced by a disinfectant or bactericidal agent used with the system.

Abstract: A continuous waste water treatment system comprising a reservoir providing a single, closed, continuous, substantially horizontal path through at least two adjacent substantially concentric loops, each of said loops having a beginning and an end, said reservoir being provided with waste water inlet means, treated liquid outlet means, and aeration and circulation means, and wherein said treated liquid outlet means is connected to clarifying means which removes at least some of the sludge carried by the treated liquid and sludge return means is provided to return at least some of the removed sludge to said reservoir.

Abstract: An improved technique for reprocessing, through a reaction zone, a portion of an agitated flow of waste water that is coupled into a wedge-shaped or frusto-conical separating zone via such reaction zone is described. A recirculation conduit, independent of an inlet aperture at the bottom of the separating zone for admitting an upward flow of water from the separating zone, has an inlet end communicating with the separating zone at an upper region thereof, the outlet of the recirculation zone emptying into the agitated water stream in the reaction zone. The inlet aperture at the bottom of the separating zone has a cross-sectional area which is small relative to the cross-sectional area of the separating zone and small relative to the cross-sectional area of the reaction zone.

Abstract: A system for continuously treating waste water from laundries, car washers and like cleaning establishments to recover water soap, detergents, and other chemicals. The process of using the system is carried out by flowing the untreated water through sand chambers to remove heavy sediment, collecting the water from the sand chambers in a storage compartment, pumping the water through a centrifugal separator for removal of large particulate matter and then through a filter containing media for removal of flocculated soaps, detergents, waxes, and other particulate matter, thence into a filtered water storage compartment. The water is pumped from the filtered water storage compartment by a pressure pump.

Abstract: A septic tank for use with a leaching pool is provided which has a cylindrical portion forming a chamber for treatment of raw sewage. A ring encircles the cylindrical portion for mounting the septic tank on the upper wall edge of the leaching pool. Positioning haunches or centering elements are also provided which automatically center the septic tank on the leaching pool. An inlet baffle and an outlet baffle are also provided in the septic tank with each having an open top for alignment with a viewing opening formed in a cover provided for the septic tank. The outlet baffle leads into a passageway formed by a reinforcing member extending downwardly from the upper portion of the cylindrical portion. The cylindrical member, the ring, the positioning haunches, and the reinforcing member are all monolithically formed of precast concrete.

Abstract: The peripheral surface of a coil of a filter web wound about a hollow shaft is covered by a liquid impervious flexible coating, and the outer periphery of a first end of the coil is secured to a supporting disc so that when liquid to be filtered is caused to pass through the coil in the axial direction thereof, the convolutions of the coil near a second end expand radially outwardly to trap contaminants in the spiral gap. Purified liquid collected at the first end of the coil is discharged through the hollow shaft. The filter unit is constructed such that a number of units can be readily connected in series.

Abstract: Decantation tanks receive an oil-water mixture from a holding tank. These decantation tanks are set at varying elevations and are arranged to operate in series to drain off oil that has separated out. These tanks may have heat producing elements associated therewith to increase the efficiency of oil separation, and chemicals may be employed in these tanks also to increase such efficiency if necessary. Separator tanks are also provided in the system and receive oil-water mixture from the bottom of the decantation tanks for further separation of oil from the water. These separator tanks have a skimming apparatus therein and also have a pair of baffles under which the water must travel to accomplish further separation of the oil. The separator tanks have a cross partition, and water in a main portion of the tank flows over such partition to a rear compartment from where it is directed to an open top inspection tank and filtered. The pH of the effluent may be altered at this point if necessary.

Abstract: An apparatus for the treatment of liquid sewage, the sewage to be treated being aerated and mixed prior to being directed sequentially through primary and secondary settling circuits wherein primarily settleable solids and secondarily settleable solids are removed respectively. Such removed solids are then directed to a digester compartment, the secondarily nonsettleable sewage being discharged from the sewage treatment apparatus. In a preferred embodiment, a portion of the primarily and secondarily settleable solids are recirculated to the aerating and mixing area thus allowing for the floculation of the liquid sewage. In a further preferred embodiment an overflow weir is provided upstream of the sewage treatment apparatus outlet thereby providing a surge capacity for the sewage treatment apparatus.The apparatus uses a hollow propeller having a plurality of holes therein on the backface thereof; the propeller is mounted on a hollow shaft.

Abstract: A reactor, comprising a homogenizing, separating and thickening space has at the bottom a homogenizing space narrowing toward the top and passing over a narrowed opening at the top into a separating space, widening toward the top, with a thickening space connected to the separating space, situated around both these spaces.

Abstract: A housing for a bilge pump-filter has a lower part in which oil and like light pollutants are separated from the polluted water. A pump has its intake connected to the lower region of this lower part and its output connected to an upper compartment of a compensation chamber in the upper housing part which is subdivided by a filter into this upper compartment and a lower compartment. A funnel under the filter conducts liquid coming down through the filter by gravity to the lower region of the lower compartment and a drain at the upper region of this lower compartment off the filter water. A level detector in the lower separation chamber operates the pump only when liquid level in this separation chamber is above a predetermined minimum level.

Abstract: This invention relates to aerobic biological processes for treating waste waters or sewage and an apparatus for carrying out the process.

Abstract: An apparatus for biological and chemical purification of water by agglomeration having a number of parallel, horizontal tanks, aligned side by side, the length of which is larger than their diameter, with inclined conduits advantageously tangential to both adjacent tanks connecting said tanks. The space determined by the inclined walls, adjacent upper parts of the mantles of the tanks, and by front and rear walls serve as a separating space for separating the floccular suspension from the purified water.

Abstract: A clarifier for purifying liquids containing solids or contaminants. The liquid to be treated enters the clarifier and is directed into a primary sludge contact zone where it is mixed with recirculating sludge. Liquid from the primary sludge contact zone is pumped via flumes to the entrance of a settling corridor for horizontal flow therethrough. The liquid flows through the corridor forming an upper free-fall zone and a lower sludge zone as the precipitates settle out. As the liquid reaches the settling corridor exit, it approaches a point of positive separation of the clarified liquid above from the sludge stream below, which is formed by the kinetic capture of precipitates settling from the free-fall zone into the sludge zone of increasing velocity.