Abstract: An apparatus for removing formation sand from an oil storage tank. The apparatus is mounted to a truck towable trailer so that it may be transported to remote sites. Mounted to the truck towable trailer is a container adapted to accept and dewater a sand-water slurry pumped from the oil storage tank. The slurry is formed by injecting high pressure water from a water reservoir mounted to the truck towable trailer into the approximate centre of mass of the formation sand by way of a pipe having a nozzle generating a spherical spray pattern within the slurry. The pipe is forced into the slurry by way of a two counter-rotating drive wheels in frictional contact with the pipe. Included in the apparatus is a bifurcated conduit adapted for attachment to the storage tank drain port adapted for the injection of high pressure through one branch of the conduit and withdrawal of slurry from the other branch and into the container by way of a slurry pump.

Abstract: An improved method of separation of liquids from solids. Animal manure in particular must be separated in order to further process the liquid. This improved method of separation also utilizes a slanted plate clarifier in its design. This design will also provide a means of removing some of the more soluble chemicals from the liquid.

Abstract: A casing having an inlet positioned below the bilge water discharge outlet of a boat or ship aligns a generally U-configured pipe vertically, in which first and second open ends of the pipe are overlaid with one of a gravel or charcoal coarse material restrictive to the flow of oil-based contaminants, and with the second open pipe end coupled to the casing outlet, such that with a plurality of filter pads floating atop the overlying layer adapted to absorb oil-based contaminants, a continuous absorption of the contaminants occur as the bilge water circulates through the casing and is allowed to dwell therein while the filter pads absorb the oil-based contaminants floating atop the inputted bilge water, along with one or more wheels extending downwardly from the casing and a handle extending rearwardly of it in allowing the casing to be moved about by a user.

Abstract: Often, within a fuel system, water is separated from fuel and collected in a water collection housing that includes a water sensor. The water sensor senses and alerts an operator when the water level rises to a point where it should be drained from the water collection housing. Installation of the water sensor may require drilling holes in the water collection housing. In the present invention, a water sensor is installed in a fuel system by positioning a first portion of the water sensor inside a water collection housing, exposing a second portion of the water sensor outside the water collection housing, and connecting the first portion and the second portion of the water sensor, at least in part, by positioning a third portion of the water sensor in a water drain assembly. The water drain assembly is positioned within a drain opening included within the water collection housing.

Abstract: A filter for Diesel engine fuel, comprising a filtering mass which is contained within an enclosure and is provided so as to be crossed by the fuel in its path inside the filter between an intake connector and a discharge connector. The enclosure comprises a water collection chamber at its bottom. The filter further comprises at least two micromeshes which are adapted to be crossed sequentially by the fuel that exits from the filtering mass.

Abstract: A casing having an inlet which receives oil-based contaminated bilge water is mounted on a boat or ship in aligning a generally U-configured pipe vertically, in which first and second open ends of the pipe are overlaid with one of a gravel or charcoal coarse material restrictive to the flow of oil-based contaminants, and with the second open pipe end coupled to the casing outlet, such that with a plurality of filter pads floating atop the overlying layer adapted to absorb oil-based contaminants, a continuous absorption of the contaminants occur as the bilge water circulates through the casing and is allowed to dwell therein while the filter pads absorb the oil-based contaminants floating atop the inputted bilge water.

Abstract: A filter for filtering liquids, especially fuel, which includes a concentric housing, an unfiltered liquid inlet, and filtered fluid outlet, and a backflow member. A concentric filter element, with a dirt collecting chamber in the lowermost part thereof, is disposed in the housing, which is closed with a cover. The housing also contains a riser pipe having a return bore hole in the uppermost part thereof, as well as a return pipe. An intermediate pipe, which is sealingly closed by the cover, is disposed above the riser pipe, and the filter element is removably attached to the intermediate pipe.

Abstract: Device and process for separation of absorbent/floating material from product mixes by means of float/sink separation with a float/sink separator which exhibits a separator tank filled with a liquid separating medium, in which context there are provided devices for generation of a surface flow in the separating medium, which propel the absorbent/floating material as a floating fraction from a pickup point of the product mix to an output point for the floating fraction, along the surface of the separating medium, at such a speed as to inhibit absorption of the separating medium.

Abstract: A method for directly evacuating water that has been separated from the filtered fuel in a fuel filter and has settled in a water collection chamber (4) of the fuel filter to an evacuation area that lies above the water level, by opening a shut-off valve (7), which leads to the exterior of the fuel filter and is connected in a water-conductive manner to the water collection chamber (4). Said evacuation takes place under a pressure that is higher in the water collection chamber (4) in relation to the evacuation area, whereby said pressure differential is created either by the operating pressure within the fuel filter during operation, or by a negative pressure that is applied externally. The method permits the simple evacuation of water form the interior of a fuel filter by a method that is not based on gravity. The inventive method can be implemented in a particularly advantageous manner, using specially configured fuel filters.

Abstract: A waste water filter comprises a shield comprising a vertical peripheral wall defining a shield interior. The shield further includes an inlet for the entry of unfiltered wastewater into the shield interior. A shield filter element is disposed within the shield interior. An outlet in fluid communication with the second interior location for discharging filtered waste water is also included into the waste water filter. The shield filter element includes at least one filter surface having filter surface openings for the passage of relatively clear water while restricting the passage of solids larger than the openings. The shield filter element, when disposed within the shield, separates the shield interior into first and second interior locations. Unfiltered or partially filtered waste water in the first interior location is separated from filtered waste water in the second location by the shield filter element. The shield filter element is removable from the shield.

Abstract: A water reservoir treatment system for a swimming pool, water tank, spa, or fountain water, which is simple to operate, low in maintenance, and highly reliable. The system preferably comprises, in sequence, a water circulation system, a vortex separator for initial separation of particulates, and an absorption or adsorption filter which may be a conventional pool filter using sand, diatomaceous earth, or paper cartridge as filtering medium.

Abstract: A filter system for receiving an oil-in-water emulsion contaminated with an emulsified contaminant oil, and separating the emulsified contaminant oil from the oil-in-water emulsion includes a filter media for receiving the oil-in-water emulsion and emulsified contaminant oil, having an inner filter element formed from a 95 percent single pass efficiency 48 micron (5 micron nominal) filtering material of needle punch polypropylene felt, an outer filter element formed from a 95 percent single pass efficiency 19 micron absolute filtering material of a polypropylene microfiber material and a porous spunbond polypropylene sandwiching the outer filter media. The filter element de-emulsifies the emulsified contaminant oil from the oil-in-water emulsion into the contaminant oil and the oil-in-water emulsion, separates the de-emulsified contaminant oil from the oil-in-water emulsion, coalesces the separated contaminant oil and passes both the coalesced de-emulsified contaminant oil and the oil-in-water emulsion.

Abstract: A wastewater treatment apparatus comprised of a water inlet 10, a filter component comprised of a series of filters 20, 30, 40 and settling ing areas 12, 22, 32 over a grade, and a series of separator tanks, 42, 52 connected by a lift tube 54 for removal of hydrocarbons, particulate material and other impurities and a water outlet for discharge into either a general wastewater system or a gray water reclamation system.

Abstract: A wastewater treatment system for use with a conventional septic tank, or other small-scale wastewater treatment facility, for enhancing wastewater treatment without requiring complex control or maintenance limitations. The system incorporates a plurality of primary functions that combine to oxidize, nitrify, denitrify and remove water borne total dissolved solids prior to effluent discharge. Included is a fluidized-bed reactor containing biofilm attached to carrier particulates for use in the purification of wastewater. The fluidized-bed reactor is configured to include two distinct regions, namely a “lower” aerobic region and an “upper” anoxic region, during normal operating conditions. The lower aerobic region uses aerobic facultative bacteria to oxidize Carbonaceous Biochemical Oxygen Demand (CBOD), organic (Kjeldahl) nitrogen, and ammonia while consuming the dissolved oxygen in the water.

Abstract: A system for limiting the size of particulate matter entering a septic tank pump contains a strainer that has a straining screen through which the pump draws liquid from the septic tank. A nozzle receives some of the effluent being pumped by the pump and is aimed toward the screen for directing effluent toward the screen to dislodge particulate matter from an area of the screen while the pump draws liquid through the screen. The screen and nozzle are arranged for relative movement so that the area of the screen being acted on by the effluent from the nozzle changes as the pump operates. Various embodiments are disclosed.

Abstract: A water filter includes an egg-shaped housing formed from a lower shell and an upper shell. The lower shell is divided into an intake chamber and an outflow chamber. A filter or membrane is placed between the upper and lower shells.

Abstract: The present invention is a waste water filter for use in a septic tank. The waste water filter includes a shield comprising a vertical peripheral wall substantially impervious to the passage of unfiltered waste water. The shield includes an opening for the entry of unfiltered waste water into the interior of the shield. A filter element is disposed substantially within the shield interior. The filter element includes a filter surface having filtering openings for restricting the passage of waste water solids of a size larger than the filtering openings, while allowing the passage relatively clear water. A reservoir within which filtered waste water may be temporarily maintained is disposed at least partially within the interior of the shield. The reservoir includes at least a first vertical peripheral wall defining a chamber. The filter element may be removed from the shield without the separation of the reservoir from the shield.

Abstract: In a filtration system wherein wastewater is recirculated back through a filtration bed for a second pass therethrough, the recirculated wastewater being directed through a set of secondary distribution pipes located in the filtration bed below those distribution pipes through which the wastewater is first carried through the bed, with hood elements arched over the respective secondary pipes.

Abstract: A filtering system for filtering effluent in a septic tank including an outer secondary filter secured within a pipe fitting, wherein the outer secondary filter includes a central opening passing therethrough; an inner primary filter, wherein the inner primary filter is slidingly engaged within the central opening in the outer secondary filter; and a filtering connection element, secured between the outer secondary filter and an inner surface of the pipe fitting, wherein the filtering connection element filters effluent passing upward through the filter pipe fitting and wherein upon removal of the inner primary filter, the outer secondary filter filters the effluent entering the pipe fitting before discharge. Either or both of the outer secondary filter or the inner primary filter may be formed with a biocide to retard the growth of biological material on their surfaces.

Abstract: A filtering apparatus of T-shaped configuration includes a vertically extending filter element receiving tube and a horizontally extending outlet conduit portion. A removable tubular filtering element having a flexible seal surrounding the outer surface of the filter element at a lower end is engagable with an inner surface of the filter element receiving tube. A stationary filter element is disposed at a juncture of the outlet conduit with a central opening in the vertically extending filter element receiving tube wherein the flexible seal of the filter engages with and cleans the particulates from the stationary filter element upon insertion and removal of the tubular filtering element from the filter element receiving portion.

Abstract: A filter for Diesel engine fuel, comprising a filtering mass which is contained within an enclosure and is provided so as to be crossed by the fuel in its path inside the filter between an intake connector and a discharge connector. The enclosure comprises a water collection chamber at its bottom. The filter further comprises at least two micromeshes which are adapted to be crossed sequentially by the fuel that exits from the filtering mass.

Abstract: A filtration apparatus includes a tank having an upper chamber and a lower baffle, layers of stone and carbon between the upper chamber and the lower baffle, a water inlet to the upper chamber, and a water outlet below the lower baffle. The upper chamber is divided by a vertical baffle which separates the water inlet from a backwash outlet. A backwash inlet is provided below the lower baffle. An air manifold coupled to an air pump is placed between the lower baffle and the upper chamber. During backwash, air is mixed with water to cause a turbulent flow. The baffle in the upper chamber prevents filter media from exiting the apparatus during backwash.

Abstract: A device for treating fluid with ultra-high magnetic force including the casing of the device as subdivided with partition panels into Nos. 1, 2, 3 chambers, and a separation chamber, as well as fluid passages. Both a louver and a plurality of latticed bodies providing magnetic fields are juxtaposed into the No. 1 and 3 chambers, respectively, to magnetically treat the fluid. The No. 2 chamber is provided to free the floc from the fluid, and a separation chamber is provided to precipitate the floc and discharge it outside. Slats of the louver are designed to taper off downstream. The louver and latticed bodies are removable from either the No. 1 or No. 3 chambers, respectively, and one side of the casing is detachable from the body of the casing. Permanent magnets are secured to each of the outer surfaces of both sides of the casing, providing magnetic fields through the Nos. 1, 3 chambers and a separation chamber.

Abstract: A fluid filtration apparatus includes a housing structure having an internal flow path through which a fluid to be filtered may be flowed, a filtration structure operably interposed in the internal flow path and a liner element disposed between an interior side surface of a side wall of the housing structure and the filtration structure operably interposed in the internal flow path.

Abstract: A cellular sample can be optically analyzed while present on a membrane filter. A membrane filter is designed to collect and adhere cells and other cellular material while permitting fluids to pass. The cellular sample can be processed mechanically or manually in order to provide cells adhered to the membrane filter. The cellular sample can be obtained through lavage, by using a personal or physician's collector, or through traditional PAP test techniques. The cellular sample can include vaginal, cervical, or ovarian tissue cells.

Abstract: The present invention relates to a compact, environmentally benign onsite waste water treatment and disposal system installed secondary to conventional primary treatment process. It is a method and apparatus for the biological purification and natural disposal of liquid wastes using a secondary single pass trickling filter in conjunction with an evapotranspiration absorption (ETA) tertiary disposal bed.

Abstract: A waste water filter comprises a shield comprising a vertical peripheral wall defining a shield interior. The shield further includes an inlet for the entry of unfiltered wastewater into the shield interior. A shield filter element is disposed within the shield interior. The shield filter element includes at least one filter surface having filter surface openings for the passage of relatively clear water while restricting the passage of solids larger than the openings. The shield filter element, when disposed within the shield, separates the shield interior into first and second interior locations. Unfiltered or partially filtered waste water in the first interior location is separated from filtered waste water in the second location by the shield filter element. The shield filter element is removable from the shield. Unfiltered or partially filtered waste water entering the shield interior after shield filter element removal will enter the first and second interior locations within the shield.

Abstract: A filter (10) for use in a water heating vessel, such as an electric kettle, to filter sedimentary material in the water includes a scale collector (25), for example in the form of a compacted mesh block, carried on the filter. The block can be supported by a carrier member (27) permanently or detachably mounted on the filter frame, preferably towards an end of the filter closest to the bottom of the vessel.

Abstract: An oil-water and oil emulsion separation system using a plurality of transport vessels as the separation tanks. The containers or tanks are arranged in series with sludge or oil removed first and thereafter remaining oil is removed and finally a relatively pure aqueous solution is returned to the system. The unit is useful with parts washers or any apparatus with which water is contaminated by free oil or sludge. A floating skimmer is placed in the user's sump and a vacuum draws this into a series of containers in which it is processed and in which sludge and oil are successively separated. A positive displacement pump is used. A manifold having vacuum relief valves for at least one container is also provided. In one embodiment, flow restrictors are placed in at least one manifold.

Abstract: An apparatus for use in a sewage treatment plant comprises a settlement tank, an inlet channel for delivering an input sewage flow to the settlement tank, and a screen arrangement having a continuous belt screen for capturing screenings contained within the sewage flow to enable their subsequent removal therefrom. The screen arrangement is arranged within the settlement tank.

Abstract: A fuel filter assembly for the filtering of a flow of fuel includes an outer shell defining a hollow interior and, at a first end, a fuel inlet passageway, a fuel outlet passageway, and a water collection region. The outer shell has a second end which is open and constructed and arranged to be closed by a removable lid. Installed within the hollow interior of the outer shell is a fuel filter cartridge which includes a filter element constructed and arranged for water separation. The filter element defines an interior space into which a fuel transfer pump is installed and which is operable to push fuel through the filter element. Included as part of the fuel filter assembly is a filter detector control circuit including a normally-open filter detector switch which is electrically and operably coupled to the fuel transfer pump. A plunger on the filter detector switch must be depressed in order to close the circuit and enable operation of the fuel transfer pump.

Abstract: A two-piece filtering device for wastewater filtering systems is disclosed wherein the two-piece system is inserted into a tubular casing. The two-piece filtering system is comprised of an outer sleeve filter and an inner primary filter, the primary filter extending downwardly through an opening in the bottom portion of the sleeve filter and also having an opening formed in its end. After insertion into the tubular casing, the two-piece filtering system of the present invention forces effluent or other fluid to be treated upward through the interior of the primary filter, through slots formed in and subsequently through the sidewall of the sleeve filter. Thus, only treated effluent flows outward through the tubular casing outlet opening. The slots may be formed in both the sidewall of the primary filter and the sleeve filter. A seal may be provided between sidewall lower portion of the primary filter and may extend to the internal sidewall of the tubular casing to prevent untreated effluent therebetween.

Abstract: A filtering system for filtering effluent in a septic tank including an outer secondary filter secured within a pipe fitting, wherein the outer secondary filter includes a central opening passing therethrough; an inner primary filter, wherein the inner primary filter is slidingly engaged within the central opening in the outer secondary filter; and a filtering connection element, secured between the outer secondary filter and an inner surface of the pipe fitting, wherein the filtering connection element filters effluent passing upward through the filter pipe fitting and wherein upon removal of the inner primary filter, the outer secondary filter filters the effluent entering the pipe fitting before discharge. Either or both of the outer secondary filter or the inner primary filter may be formed with a biocide to retard the growth of biological material on their surfaces.

Abstract: A filter for a carpet cleaning device and method for using therefor includes a casing and a partition that extends into the casing to define a primary chamber and a secondary chamber within the casing. A main siphon with an inverted U-shape is mounted in the partition. One end of the siphon extends into the primary chamber while the other end of the siphon extends into the secondary chamber. An auxiliary siphon is located within the secondary chamber, and a pump is attached in fluid communication with the auxiliary siphon. During operation, a wastewater/debris stream is transported into the filter. The stream collects in the primary chamber and establishes a primary fluid level therein. As the primary fluid level rises, carpet fibers and other insoluble debris settle in the primary chamber. Once the primary fluid level is even with the siphon, wastewater fluid is transported from the primary chamber to the secondary chamber and establishes a secondary fluid level therein.

Abstract: A filter and housing for waste water treatment includes a housing having a plurality of coaxially mounted vertically extending sections adaptable to receive a filter cartridge therein. An upper section is provided with an outlet consisting of at least two coaxially aligned rings of preselected diameters wherein the thickness of the rings and the spacing between the rings is sufficient to receive waste water treatment outlets of different diameters. The filter cartridge is comprised of a stacked arrangement of a plurality of disc-dam units wherein each disc-dam unit is provided with a serpentine configured first dam, the first dam extending upwardly from an upper surface of the disc-dam unit, the first dam having terminating ends spaced at outer terminating edges of the disc dam unit to define a cord segment therebetween. The terminating ends are connected by a second dam having a height less than the first dam.

Abstract: A drainwater treatment system positionable within the vertical passageway of a drainage system utilizes a catch basin for accepting drainwater which flows downwardly into the drainage system and a filter-supporting section disposed alongside the catch basin. The filter-supporting section accepts drainwater which flows therein from the catch basin and permits drainwater to flow downwardly therethrough. First and second filters containing a hydrophobic material are positioned within the filter-supporting section for filtering contaminants from the drainwater flowing downwardly therethrough, and an overflow is associated with the catch basin and the filter-supporting section through which drainwater is permitted to exit the treatment system and bypass the first and second filters when the flow rate of drainwater into the system exceeds the rate at which drainwater is permitted to flow downwardly through the first and second filters.

Abstract: A laminar flow collar for use with an effluent pump in a septic system. The laminar flow collar is a cylinder having a closed bottom and an open top portion. The laminar flow collar includes a plurality of holes drilled about the periphery of the cylinder at a certain distance from the bottom. The laminar flow collar sits on the bottom of the tank and the plurality of holes are positioned at a certain height from the bottom of the septic tank and below the surface of the effluent so as not to draw in “scum” floating on the top of the septic tank. The plurality of holes are engineered to match the pump flow so that flow into the collar is laminar, thereby avoiding turbulence in the tank which would otherwise stir up the sludge at the bottom of the tank. The effluent pump is inserted into a second cylinder which is placed within the laminar flow collar.

Abstract: A containment assembly for use with a pressure washing apparatus to contain and collect the relatively light weight contaminants from run-off of a washing fluid after being flowed over an object to be cleaned. The containment assembly includes a settling compartment for collection of the run-off washing fluid therein, and a containment compartment in gravity flow fluid communication with a surface of the collected washing fluid in the settling compartment. As the lightweight contaminants at the surface of the washing fluids gravity flow into the containment compartment, they are contained and collected therein. A fluid extraction assembly is in fluid communication with the contained washing fluid in the containment compartment through an opening therein vertically disposed below a predetermined operational fluid level of the contained washing fluid.

Abstract: A sump and filter device for use in drain inlets is disclosed. The device comprises a platform having one or more openings for receiving fluid flow. The platform is positioned and supported above the drain exits situated in the lower portion of the drain inlet. The platform is dimensioned for cooperative engagement with the interior perimeter or wall of the particular inlet involved. To inhibit fluid from entering the area of the inlet below the platform, a gasket or bladder may be positioned around the outer perimeter of the platform. An upwardly oriented fluid-receiving member having an upper end and a lower end and an opening therethrough is engaged with at least one of the openings of the platform. The opening in the fluid-receiving member is in fluid communication via its lower end with at least one of the openings in the platform.

Abstract: Effluent from a septic tank is trickled through a first filter canister. The thus filtered effluent is recycled a plurality of times through the same filter canister, further to cleanse the effluent. A small portion of the recycling effluent is directed outward into a drip irrigation system. A second filter canister, not in line with the first canister, also receives some of the recycling, filtered effluent, for plural recycles therethrough, to enhance the filtering process, at the same time that other of the filtered effluent is being recycled through the first filter canister. The filtered effluent from the two canisters are permitted to combine prior to subsequent recycling.

Abstract: A wastewater filtration system with a housing provided by a cylindrical conduit forming a filter chamber and having an inlet end and an outlet. A shutoff valve assembly is connected to an inlet end of the housing, and includes a closure element movable between an open position and a closed position. The closure element is biased to the closed position in the absence of a filter in the chamber and positioned near the inlet such that the shutoff valve opens when a filter is installed. The closure element may be hinged to the housing, and may be counterweighted or spring biased to the closed position.

Abstract: The filter head and filter housing define a liquid flow inlet path, a first liquid flow outlet path, and a second liquid flow outlet path. A filter media construction is positioned within the housing. The filter media construction, in combination with the housing, defines an unfiltered liquid volume, and a filtered liquid volume. A first liquid flow inlet path directs liquid from the liquid flow inlet to the unfiltered liquid volume. A first liquid flow outlet path directs liquid flow from the filtered liquid volume to the first liquid flow outlet. A second liquid flow outlet path directs liquid flow from the filtered liquid volume to the second liquid flow outlet. A first valve assembly selectively opens the second liquid flow path to passage of liquid therethrough in response to a first selected liquid pressure level within the filtered liquid volume.

Abstract: The waste water treatment system comprises a waste water treatment facility having an inlet for the entry of waste water and an outlet, and a re-circulation tank including an inlet and an outlet. The inlet of the waste water treatment facility is in fluid communication with the outlet of the re-circulation tank. The system includes a distribution chamber including an upstanding wall, a floor, an inlet, and at least two outlets conduits. A first outlet conduit is in fluid communication with the re-circulation tank; and a second outlet conduit is in fluid communication with a discharge conduit. At least one flow distribution chamber outlet conduit typically includes an inlet opening which is disposed at the same vertical height as the floor of the distribution chamber to allow the entry of waste water which has entered into the distribution chamber, such that substantially no waste water entering into the distribution chamber through the inlet will be retained within the chamber.

Abstract: The present storm drain filter comprises a tubular housing with a solid vertical surrounding wall and sized for being recessed inside a storm drain. The housing is supported in the drain by a flange around its top edge. A tubular cartridge is detachably attached to a solid annular bottom plate of the housing. The cartridge comprises a solid annular top cover coaxial with a solid annular bottom closure; vertical tubular inner, intermediate, and outer screens concentrically connected between the top cover and bottom closure; and filter media enclosed between the screens. A central overflow opening inside the inner screen is aligned with a hole on the bottom plate of the housing. An annular debris trough is defined between the cartridge and the housing. Debris flowing into the filter is collected in the trough. As the level of debris rises and obstructs the lower part of the outer screen, the unobstructed upper part of the outer screen continues to filter the water.

Abstract: The dirt holding capacity of the filter is increased by providing one or more areas for the particles to settle and remain out of suspension on the filter so that the particles are not carried through a filter media disposed in the filter. The areas may be provided by recessed pockets, chambers or downwardly sloping floors which end in gutters. This arrangement is useful in transmissions and engine lubricating arrangements wherein oil is accumulated in and recirculates from an oil pan. With these arrangements, the filter is in the form of a panel having an opening therethrough, wherein the panel is disposed within an oil pan in spaced relation to the bottom of the oil pan.

Abstract: Apparatus (10) for denitrification of a liquid, such as water, comprises a vertical processing tank (11) including: a bottom section (20) partially filled with activated sludge (22), bottom section (20) having a bottom (12) having a concave upward facing inner surface (13); a horizontal filter (40) spanning tank (11) above sludge (22); an anaerobic process section (50) including a denitrifying biomass section (54); and an oxidation section (60) including a diffuser (61). The method comprising the steps of: injecting impure water (90) into sludge (22) so as to travel helically upward to mix with sludge (22); filtering with filter (40); denitrifying with denitrifying biomass (54); and oxidizing the effluent water from anaerobic biomass (54) in oxidation section (60) including bubbling air from diffuser (63). Water (90) effluent from tank (11) is sterilized with an ozonation device (86).

Abstract: A septic system filter apparatus for filtering waste water as it travels from a septic tank to a septic field. The septic system filter apparatus includes a filtering system for filtering water from a septic tank for receiving waste material. A filtering apparatus comprises a first housing having a bottom wall and a top wall. The top wall is a removable lid. The first housing has a first inlet port and an exit port. The bottom wall has at least two supports thereon extending upward from an inner surface of the bottom wall. A second housing for holding filtering material has a removable lid thereon. The second housing has dimensions smaller than the first housing to fit into the first housing. A space is defined between the first housing and the second housing. The second housing rests on the supports above the inner surface of the bottom wall. The second housing has a second inlet port located generally adjacent to the first inlet port. The second housing has an upper chamber and lower chamber.

Abstract: A filter head having a pump housing, a flow passage network, and a mounting bracket is adaptable to engage a replaceable filter cartridge. An electric pump is positioned within the pump housing. A Seal/isolator disposed between the pump housing and electric pump protects the electric pump from vibrations. After changing the filter cartridge, typically an air pocket forms creating a danger for a fuel injector or fuel injector pump. By using an electronic controller, an operator may remotely operate the electric pump to prime the filter cartridge. Also, the electronic controller may selectively determine whether the fluid flowing from the filter cartridge passes through the electric pump or instead passes directly into an outlet.

Abstract: A filtering system for filtering effluent in a septic tank including an outer secondary filter secured within a pipe fitting, wherein the outer secondary filter includes a central opening passing therethrough; an inner primary filter, wherein the inner primary filter is slidingly engaged within the central opening in the outer secondary filter; and a filtering connection element, secured between the outer secondary filter and an inner surface of the pipe fitting, wherein the filtering connection element filters effluent passing upward through the filter pipe fitting and wherein upon removal of the inner primary filter, the outer secondary filter filters the effluent entering the pipe fitting before discharge. Either or both of the outer secondary filter or the inner primary filter may be formed with a biocide to retard the growth of biological material on their surfaces.

Abstract: The present invention relates to a suction and discharge apparatus for a drilling fluid, which is used in material removing treatment of hard constructional components formed of concrete, stone, break work, and the like, and including at least two air- and liquid-tight reservoirs (1,2), with the first reservoir being connected with a vacuum-producing device (6) and a suction conduit (3), with the second reservoir (2) being connected with an overpressure-producing device (4) and a discharge conduit (4), and with both reservoirs (1, 2) being connected by a conduit (5).