Abstract: A mobile water treatment plant capable of handling a high volume of sewage confined within the dimensions of a conventional truck-hauled container comprises:(1) a screen to separate gross solids from liquids;(2) a holding chamber between features 1 and 2 in which the liquid is aerated;(3) a flocculating chamber for the liquid;(4) a lamellar separator (bottom fed with intermediate auxillary lamellae extending 1/2 to 1/3 of the length of the main lamellae); and(5) treatment of the water from the lamellar separator with "activated oxygen" as described and claimed in U.S. Pat. No. 4,214,962.A preferred subsidiary feature is to recycle a controlled amount of the sludge separated at point 1 to the holding tank.

Abstract: A sewage treatment equipment with activated sludge process beds comprising a plurality of treatment tanks arranged in a row, each communicating with an adjacent tank through a passage and being provided with an aeration tank connected with an air in-flow pipe and a plurality of activated sludge process beds disposed vertically above the aeration pipe and in each of which a mesh-like or grid-like outer periphery of a cylindrical core is wrapped with a porous member of a certain thickness and further tightened with tightening belts, characterized in that an outer peripheral area of the cylindrical core is increased tank by tank to give variety to kind of bacteria, bredding ratio between bacterias and distribution thereof.

Abstract: A water purifier has a deodorization tank for removing ions and odorants by adsorption from running water and a mesh filter for removing dust. The mesh filter is arranged at a water entrance of the deodorization tank. The deodorization tank contains an anti-bacterial membrane having a function of imparting an antibacterial activity to the water by supplying mineral ions to the running water and thereby alkalifying the water. The deodorization tank also has a water exit which is associated with a mineral supply filter for supplying a mineral component to the running water. The mineral supply filter is prepared by molding a powder obtained by adhering a material such as soda glass to the surface of heat-decomposed calcium carbonate.

Abstract: Apparatus for treatment of septic tank effluent to remove suspended particles for clarifying and purifying the water prior to discharge into the leaching field or for use for other purposes. The apparatus, which is small enough to be conveniently installed in individual households, comprises a vertical main tank, flocculation material supply means to form flocs for combining with suspended solids in the unclarified water introduced into the main tank, a water electrolysis unit in the main tank for producing gaseous bubbles to which the flocs become attached and which rise to the surface where the entrapped solids are removed and returned to the septic tank, and a filter device at the bottom of the main tank for removing remaining precipitated flocs with entrapped solids. The anode of the electrolysis unit is made of aluminum to provide aluminum hydroxide as a flocculating agent.

Abstract: An apparatus for the treatment of waste water from relatively small structures such as single family residences, dwellings and the like includes first and second vessels connected by a flow line, the first vessel including a waste water inlet and the second vessel including an outlet for the discharge of clarified water. A transverse baffle divides the second vessel into aeration and clarifier sections, the clarifier section including a transversely mounted inclined plate which prevents the accumulation of solid material in the clarified section and redirects the solid material back into the aeration section. A multiple angle discharge piping arrangement prevents clarified liquid from discharging the apparatus until it has made at least two right angle turns before reaching the discharge piping of the unit.

Abstract: A continuous process and apparatus for drying aqueous solids by evaporation using a fluidizing oil and a surfactant wherein the fluidizing oil and surfactant are recovered and recycled separately or together. The aqueous solids may, or may not, have a heavy, natural oil associated with them.

Abstract: A water treatment plant includes a granulated activated carbon bed contactor used in pretreating influent water, including wastewater, prior to any filtration of the water in downstream stages of the plant. The contactor is operable either primarily for adsorption purposes or in a dual role for both adsorption and clarification or flocculation purposes to improve performance of downstream filters. In one embodiment, the carbon bed is partially fluidized and expanded by water flowing upwardly through the bed. This fluidization allows the passage of solids the bed and minimizes the plugging of the bed. The flow rate of water through the bed is adjustable and controllable to establish the degree of solids capture by the bed. Upwash and backwash carbon bed cleaning mechanisms are provided. Furthermore, the contactor has a countercurrent spent carbon removal and fresh carbon introduction system for rejuvenating the bed.

Abstract: A system to remove contaminants from water includes, in the pressurized water flow lines, a venturi nozzle assembly to entrain air in the water, a pressure tank to store and deliver the air laden water, an aerator/precipitator tank assembly to remove the excess air and any residual gases from the water in the pressurized system and to remove contaminants from the water and a filter tank having a filtration bed therein to remove the remaining precipitated contaminants from the water and to deliver the water to service.

Abstract: A system for water treatment includes the steps of superchlorinating the water to a level sufficient to destroy bacterial content in the water very rapidly, passing the water through a sand filter in which the medium includes beads of magnesium hydroxide and subjecting different portions of the filtered water to differing degrees of filtration by an activated charcoal filter, whereby to remove a sufficient proportion of the chlorine added to the water to reduce the residual chlorine to a level sufficient to maintain the water sterile without substantially influencing the taste of the water. Preferably, the sand and charcoal filters are disposed horizontally, and the depths of the filter beds are graded horizontally to provide the differing degrees of filtration to the water.

Abstract: A method and apparatus for biological aerobic treatment of wastewater wherein oxygen is induced into a mixed liquor flow path and a method and apparatus for separating the liquid withdrawn from the mixed liquor flow path into a clear liquid stream and a flock laden stream. A streaming specific gravity separator of unique construction and operation separates the mixed liquor into a clear liquid stream and a flock laden stream, withdrawing the clear liquid stream from the system and directing the flock laden stream back into the mixed liquor flow path. The separator functions within the system to be self-controlling for load increases or decreases.In accordance with preferred embodiments of the system, the separator may be positioned inside or outside of an oxidation ditch. The separator may also be utilized in combination with an aeration basin.

Abstract: This disclosure is directed to a wastewater treatment plant which includes pretreatment, aeration, final clarification and overflow/backwash chambers adapted to receive a fluid, such as home wastewater, which is to be subjected to extended aeration or aerobic digestion, the aeration chamber including an aerator having a shaft whose lower end is normally received in the fluid which is to be treated, an aerator foam deflector carried by the shaft which under abnormally high fluid levels increases the torque on the shaft and, thus, indicates abnormal operation, the final clarification chamber including a demand use filter, an overflow outlet operative should the filter become disabled, and a backwash nozzle located in the filter by reverse pumping therethrough fluid pumped from the overflow or backwash chamber.

Abstract: A belt press for use in removing water from sewage sludge, and including a frame, a pair of belts for compressing sludge material therebetween, the said belts being water-permeable whereby water in said sludge may drain through said belts, and a gravity belt thickener adjacent the belt press. The gravity belt thickener includes a belt having a belt flight adapted to support sewage sludge thereon, the belt of the gravity belt thickener having a width greater than the width of the belt of the belt press.

Abstract: A water purification system includes an ion-exchange unit for producing high-resistivity water, followed by ozone exposure and ultraviolet sterilizer units that oxidize organics and also reduce resistivity, followed by a vacuum degassification unit to restore high resistivity.

Abstract: An aeration tank for purifying sewage water by activated sludge comprising a mixing vessel communicated, according to the principle of communicating vessels, with a sludge separator, and a regenerator of activated sludge communicable with an outlet or recyclable sludge of the sludge separator and with the mixing vessel for feeding thereinto regenerated activated sludge. The mixing vessel is provided with at least one vertically arranged blade-type aerator having a suction tube an inlet end of which communicates with the regenerator, whereas an outlet end of which has a funnel accommodating the blades of the aerator. The sludge separator is equipped with a regulator of dynamic level of sludge medium, the upper edge of the funnel being positioned substantially above the dynamic level of the sludge medium in the mixing vessel.

Abstract: An apparatus for the treatment of water to remove colloidal and suspended matter therefrom includes a reaction tank for receiving water to be treated and for forming sludge of flocculated or crystalline precipitated matter contained in the water. A concentrating tank receives the water and sludge from the reaction tank, removes sludge and matter from the water, and concentrates the sludge. A lamella settling tank receives from the concentrating tank the water and removes therefrom by settling remaining sludge and matter. A portion of the sludge from the concentrating tank prior to the maximum concentration thereof is recycled to the reaction tank.

Abstract: A waste disposal system for treating and disposing of infectious waste articles in a substantially controlled, closed, aseptic environment and for converting such infectious waste articles into a safely disposable, non-infectious non-toxic residue of solid waste independent from disinfecting liquid waste. A waste delivery conveyor transfers waste articles from an input region to preliminary waste processing apparata for preliminarily fragmenting the waste for further treatment by the system. Disinfectant spray is deposited on the waste as it enters the preliminary waste processing apparatus with the fragments resulting therefrom, together with the disinfectant liquid, being transferred to rotary hammermill elements to convert the fragment disinfectant solution to a solution of fine waste particles and disinfectant solution. Liquid solid particle separator apparata then separates the solid waste particles from the liquid disinfectant for independent evacuation of same.

Abstract: A novel sewage purification system is provided herein. The system includes a pump for drawing sewage into the system and an injection inlet for injecting chemical into the effluent line from the pump. The pump leads to a pair of interconnected U-shaped mixing chambers connected to the effluent line from the pump, the U-shaped mixing chambers being baffled and being of a particular construction. There is also a recycle line from the inlet line to the mixing chambers back to the pump for recycling about 1-20% of the total flow rate, which is generally about 5-40 gallons/minute through the system. The U-shaped mixing chambers are also provided with at least two injection inlets for injecting chemicals thereinto. A splitter chamber is connected to the outlet from the mixing chambers to provide a pair of parallel flow outlets therefrom.

Abstract: An apparatus for separating oil from water, particularly from sea water, having high separating performance, being compact in size so as to be installed in a limited or small space such as a ship, and running at a low cost. The separating apparatus includes a separator in which oil in the water comes up by gravity difference, a flocculating device with a mixer and a flocculant supplying system, the mixer mixing the flocculant and water to attain a flocculation of the suspended material from the separator, a pressurized floating separator for floating and separating the flock under pressure as receiving the fluid from the flocculating device, a gas-liquid mixing-dissolving device taking bubbling water into the fluid which is sent from the flocculating device connected to the lower part of the pressure floating separator, and a filter for removing the remaining oil by passing the fluid from the pressurized separator.

Abstract: A packaged, transportable waste treatment system for hazardous and non-hazardous wastes comprises a pair of mixing tanks having a flow inlet at the lower bottom central portion of the tanks, the flow inlet providing an injection conduit which proceeds vertically a distance into one of the tanks. A floc concentration tube is provided with an inner bore, the tube being vertically mounted in the tank about the injection conduit with the tube having a lower fluid inlet and an upper fluid outlet, the fluid inlet being in communication with the tank by means of a plurality of perforations in the tube at the fluid inlet adjacent the bottom of the tank. A rotatable propeller shaft having a mixing propeller mounted thereon is attached to the tank structure, the shaft being mounted at least in the tube bore above the injection conduit with the propeller being between the lower fluid inlet and the upper outlet immediately adjacent the outlet of the injection conduit.

Abstract: A chemical mixing apparatus comprises a preferably cylindrical mixing tank having a flow inlet at the lower bottom central portion of the tank, the flow inlet providing an injection conduit which proceed vertically a distance into the tank. A floc concentration tube is provided with an inner bore, the tube being vertically mounted in the tank about the injection conduit with the tube having a lower fluid inlet and an upper fluid outlet, the fluid inlet being in communication with the tank by means of a plurality of perforations in the tube at the fluid inlet adjacent the bottom of the tank. A rotatable propeller shaft having a mixing propeller mounted thereon is attached to the tank structure, the shaft being mounted at least in the tube bore above the injection conduit with the propeller being between the lower fluid inlet and the upper outlet immediately adjacent the outlet of the injection conduit.

Abstract: A mobile vehicle is utilized to process hydrocarbons having high toxicity due to the presence of PCB. Hydrocarbons containing PCB are blended with metallic sodium at a temperature of about 130.degree. C. and thereafter the mixture is separated into its components one of which is a hydrocarbon containing less than about 2 ppm of PCB.

Abstract: This disclosure is directed to a wastewater treatment plant which includes pretreatment, aeration, final clarification and overflow/backwash chambers adapted to receive a fluid, such as home wastewater, which is to be subjected to extended aeration or aerobic digestion, the aeration chamber including an aerator having a shaft whose lower end is normally received in the fluid which is to be treated, an aerator foam deflector carried by the shaft which under abnormally high fluid levels increases the torque on the shaft and, thus, indicates abnormal operation, the final clarification chamber including a demand use filter, an overflow outlet operative should the filter become disabled, and a backwash nozzle located in the filter by reverse pumping therethrough fluid pumped from the overflow or backwash chamber.

Abstract: This invention relates to flocculation apparatus for the purification of liquids, particularly water, wherein provision is made for initial vigorous mixing of the coagulants in the liquid followed by a gradually diminishing agitation of the liquid and flocculent to provide proper flocculation; the apparatus comprising a circular flat bottomed chamber, a central circular well having openings through its wall spaced apart circumferentially and vertically, a plurality of radially extending rotatable arms supported above the chamber, each arm carrying downwardly depending blades spaced apart along the length of the arms and positioned to intersperse with a plurality of series of vertical fixed blades extending radially from the well, and upwardly from the floor of the chamber, the blades extending substantially the full depth of the chamber, at least one feed chamber in communication with the chamber through an opening in the wall thereof, means for rotating the arms and an outlet from the bottom of the well lead

Abstract: In a plant for purifying contaminated air, the contaminants are transferred from the air to a liquid flowing through a spray booth through which the contaminated air also flows in intimate contact with the liquid. The liquid is then collected in a container, from which it is recirculated to the spray booth. The closed liquid circulation circuit in flow communication with the spray booth is connected to a biological cleaning step in which the contaminants dissolved and/or suspended in the liquid are decomposed and then separated. The biological cleaning step comprises a bioreactor in which the main portion of the bio-degradation occurs, and a separator, for separation of the biosludge coming from the reactor. At least part of the contaminated liquid passing through the spray booth is continuously transferred to the biological cleaning stage from which substantially the same quantity of the cleaned liquid is recirculated to the spray booth circulation circuit.

Abstract: In a flotation basin a flotation zone and a pure liquid zone are formed which are separated by filter means. A liquid containing suspended matter is introduced into the flotation zone via an inlet and subjected to pressure release flotation by saturating pure liquid with pressurized gas under a pressure in the range of 3 to 8 bar and injecting the pressurized gas saturated liquid into the flotation zone in the region of the inlet. The flotated mud accumulating at the surface of the liquid is removed laterally by removal means coacting with the filter means or is removed by means of a combined filtering and removing device together with non-flotatable suspended matter on a filter web circulated or passed through the flotation basin. The mud is predried on the filter web and separated therefrom by redirecting its run, if desired, with assistance by a scraper. The mud falls into a collecting container separated from the flotation basin or its contents by a partition.

Abstract: According to an embodiment thereof, the apparatus comprises a pair of reaction vessels in which, sequentially, to treat the sludge. Both vessels are pressurized, and the first thereof has an aerator for aerating the sludge, and receives sulfuric acid and chlorine thereinto through a port. A dewatering device is provided upstream of the first vessel, and the outlet of the first vessel is coupled to an inlet of the second vessel through another dewatering device. The second vessel defines a final-treatment chamber in which the sludge is exposed to ozone, air and lime. The treatment method, then, comprises the steps carried out in the apparatus, namely: introducing the sludge into the first vessel and oxidizing and depressing the pH of the sludge so introduced, and recycling the sludge in the first vessel over a given period of time. Thereafter the sludge is dewatered and conducted to the second vessel wherein it is exposed to air, ozone and lime, as aforesaid, and discharged after a like period of time.

Abstract: An apparatus for the purification of salt brine having magnesium and calcium hardness includes means for treating a saturated salt brine containing magnesium and calcium ions with an alkali metal carbonate and an alkali metal hydroxide in a preselected sequence and in amounts in excess of stoichiometric proportions to form firm, readily settleable, filterable floc precipitate particles of insoluble compounds of magnesium and calcium, suspended in the treated brine and passing the resultant suspension to a filtering unit to separate and remove the floc precipitate and to provide a purified salt brine.

Abstract: A wastewater treatment system for use in treating household wastewater particularly for tidal coastal areas where seawater is plentiful and fresh water may be scarce. The system uses a source of seawater, preferably from a central storage location, to which hydrogen peroxide has been added. Individual households are provided with the seawater-hydrogen peroxide mixture as flushwater directly into the toilet flush tanks. The discharge from each household, including wastes from toilets, bathing, wash and kitchen units, is fed to a series of two or three reaction chambers, and a filter unit before being drained back into the tidal waters.

Abstract: A decomposing plant for refuse comprises cells which are disposed one next to the other and wherein the material is held by a bottom and by sidewalls. In order to transfer the material from cell to cell, there is provided a transfer unit which can be transported along the series of cells and driven into the cells. The transfer unit comprises a conveyor band capable of passing over a sidewall. From one cell to the next cell and provided with spray nozzles for subsequent moistening of the material.

Abstract: Arrangement for the biological cleaning of water, said arrangement being suitable for large urban stations for cleaning sewage or for the cleaning of waste waters of industrial plants. The arrangement comprises an activating system with pneumatic aeration and a separating system communicating therewith, the arrangement operates on the basis of fluid filtration and automatic return of activated sludge into the activating system by gravitation. Suitable partition walls in a large container form a number of part activating spaces and part separating spaces; by suitable interconnections, by rectifying walls, by the supply of raw water, and by aeration a convenient streaming flow of the liquid and an advantageous operation of the arrangement are obtained.

Abstract: A transportable self-contained sewage treatment plant includes an outer shell containing a plurality of adjacent chambers having pipes or lines providing a serial flow of fluid therebetween. An aeration chamber delivers biologically treated wastewater to a clarifier chamber which returns both heavy as well as lighter, floating particles to the aeration chamber while passing the remaining wastewater to a filter chamber for passage through a filter bed. The resultant treated fluid next passes into a backwash chamber before discharging as clean water from the plant. The filter bed in the filter chamber is periodically backflushed by applying a pressure head upon the clean water in the backwash chamber to direct the water in a counterflow manner through the filter bed while at the same time this pressure head closes check valves both to preclude discharge of clean water from the plant and to direct backflushed water to by-pass the clarifier chamber and enter the aeration chamber.

Abstract: A two stage clarifier apparatus for producing a clarified effluent from mixed liquor in a sewage treatment system wherein mixed liquor is partially clarified in a first quiescent zone in the first stage of the apparatus to produce a partially clarified effluent, the partially clarified effluent is transferred to an aeration zone in the second stage of the apparatus, a portion of the partially clarified effluent is transferred from the aeration zone to a second quiescent zone in the second stage of the apparatus, and fully clarified effluent is withdrawn from the second quiescent zone.

Abstract: The present disclosure is directed to a sewage disposal system having a central aeration chamber flanked on each side by a pair of biological filters each containing tiers of buoyant plastic hollow spheres through and over which the liquid from the aeration chamber flows upwardly and the filters are connected at the top by a crossover pipe positioned below the top level of sludge in the aeration chamber. The crossover pipe communicates with a vertical riser which functions with a vertical antisyphon vent. The riser communicates with a flexible hose which connects the primary central aeration chamber with the chlorine contact tank to receive the sludge from the biological filters for chlorinating the liquid and providing an adequate retention time for disinfection prior to discharge overboard.

Abstract: Apparatus for the biological purification of water with the separation of activated sludge by fluid filtration with the spontaneous returning of activated sludge into the activation area or zone, said separation area or zone being arranged above the activation area.

Abstract: The invention provides for a sealed mix tank having two chambers: one chamber mixes waste material and water to form a slurry and collect gas, particularly ammonia gas, during the digestive process; and, a second chamber stores water used for mixing. A classifier separates anaerobically non-digestible material from the slurry by directing the slurry through a basin to settle heavy particles and to push scum-forming particles onto a strainer. A sealed digest tank allows for sparging of the slurry with gas and for collecting the bio-gas generated during the digestive process. A sealed sludge tank receives digested slurry from the digest tank, sparges the sludge with gas, and collects the resultant bio-gas. A sealed scrub tank contains a scrubbing liquid which first absorbs ammonia gas generated during the digestive process and subsequently absorbs carbon dioxide and hydrogen sulfide from bio-gas collected from the tanks during the process.

Abstract: Apparatus for cleaning sediment from basins comprises a suction system that withdraws particulate-laden liquid from the bottom of the basin. A pump providing the suction transports the particulate-laden liquid to a first vessel or catch tank where primary settling of the particulate can occur. A second pump withdraws particulate laden liquid from the catch tank and directs a high velocity flow of particulate laden coolant through separator apparatus for primary separation of particulate matter. The discharge of effluvia of the primary separator is conducted to a second vessel or tank. A third pump withdraws liquid from the lowermost portion of the second vessel and forces a high velocity flow through a secondary system for further separation of particulate matter from the liquid. The discharge of the second separator system is conducted to a third vessel or tank.

Abstract: A sludge condensation and dewatering apparatus is described which comprises a condensation unit and a dewatering unit. The condensation unit comprises a flocculating reaction tank (1) for forming a sludge flock, a first holding tank (2) slantingly arranged and upwardly inclined along the moving direction of the sludge, a conveyor for conveying the sludge flock from the flocculation tank to the holding tank for retaining the sludge flock produced by the flocculation reaction tank and an endless running screen belt (3) located just below and adjacent to the first holding tank, a dewatering unit, a solidification device (13) in communication with the first holding tank located between the condensation unit and the dewatering unit. The dewatering unit comprises an upper running piled filter cloth (4) and a lower running piled filter cloth (5), a plurality of rolls (R.sub.1 -R.sub.

Abstract: A water treatment plant comprising a generally horizontal cylindrical tank and an upstanding cylindrical tank usually having a diameter less than the horizontal tank and being integrally attached to and intersecting an end wall portion thereof. The horizontal tank includes a transverse partition and a longitudinal partition which extends from an intermediate portion of the transverse partition to the upstanding tank and divides the first tank into an aeration chamber, a sludge holding chamber and a purifying or chlorine contact chamber. The second tank comprises a clarifying chamber including an upper portion having influent and effluent pipe means and skimming means and a bottom portion having a circular bottom surface, an outlet and scraper means for moving sediment into the outlet for recirculation either to the aeration chamber or to the sludge holding chamber.

Abstract: An electromagnetic ground water conditioning system and sampling device comprising a holding tank, a pump, filters and timers to regulate the time and duration of blowout of settled solids at the bottom of the tank. The electromagnetic water conditioning unit is that disclosed and claimed in my allowed patent application Ser. No. 153,219 filed May 27, 1980, entitled Free Flow Non-Corrosive Water Treatment Device, now U.S. Pat. No. 4,288,323. A blowout valve at the bottom of the tank is solenoid operated and regulated to discharge a small liquid volume of settled solids. One timer is a 24-hour timer to set the blowdown start, the other is a 30-minute timer which sets the duration of the blowdown. For ground water or sewage water or industrial waste water a 2-hour setting on the 24-hour timer and a 10-second setting on the 60-second timer is preferred. The amount blown out is 1/10 gallon.

Abstract: An improved waterless toilet for aerobic biological transformation of organic waste material is disclosed. The toilet is located at a position remote from a compartment wherein waste material is aerobically transformed. The toilet is connected to the compartment by a conduit. Organic waste is deposited into the toilet and a subsequently applied vacuum aids in the transporting of the waste material through the conduit to the compartment. Prior to depositing organic waste material into the toilet, a cup-shaped paper wrapping means is inserted into the toilet. Thereafter the vacuum is applied to the paper wrapping means and waste material to cause the paper wrapping to close around the waste material as it enters the conduit. Utilizing paper wrapping means, the toilet is protected from soiling by the organic waste material when it is deposited in the toilet.

Abstract: Provides a self-cleaning conic reaction chamber having specific multiple conduit connections, sealable closure, internal mixer, external vibrators and dependent sludge accumulator which chamber can be flow connected to readily available handling units to form a stepwise acid/iron/alkali assembly for treating contaminated liquid such as sewage or other waste water so as to obtain uncontaminated liquid and sterile sludge. Stepwise flow can be automated by adding stepping timer and electronic controller responsive to pH probes and pressure-, liquid level- and turbidity-sensors plus remote controlled valves, pumps, blowers and metering devices.

Abstract: The upflow filter assembly includes a primary chamber situated above a secondary chamber within an enclosure and having a filter element spanning the primary chamber towards the upper end thereof. Airlocks are situated near the dividing floor of the two chambers so that when in the liquid treating or filtering mode, they operate to maintain the air/liquid interface between the chambers and prevent liquid from passing into the secondary chamber assisted by compressed air introduced into the secondary chamber. Liquid containing solids and/or flocculents, is fed into the primary chamber adjacent the lower side thereof and gradually fills the chamber with much of the flocculents and solids settling out by gravity. The partially deflocculated liquid then passes up through the filter element to a height above the filter element with excess, relatively clear effluent flowing out through an outlet spaced above the filter element to provide a hydraulic head above the filter element.

Abstract: Mixing of two liquid phases can be advantageously conducted when the two phases are supplied at steady flow rates. Variations in the rates of supply of the phases are compensated for by pumping each liquid at a constant flow rate higher than the maximum flow rate provided by the supply, and permitting recirculation of disengaged phase in the amount necessary to meet the demand of the system.

Abstract: A system for reconditioning soils contaminated with crude oils or other refined petroleum products. The system comprises a mixer input device for mixing and heating the soils with a liquid and providing a heated blended slurry. A sparger kiln agitates the slurry to break down its component parts into a fine particle slurry. A first clarifier washes the fine particle slurry to effect a first separation of oil particles from the slurry. A network of flotation cell units further wash and agitate the fine particle slurry from the clarifier to effect a second separation of oil particles from the fine particle slurry. A reagent is added to the flotation cells to effect the oil separation. An aeration clarifier further separates the oil particles from the liquid mixture elected from the flotation cell units. A collecting system is provided to recover the oil particles separated from the first clarifier and the aeration clarifier.

Abstract: An improved apparatus for treatment of sewage is disclosed in which the overflow fluid sewage from a septic tank is directed into at least one enclosed evaporation tank having at least one upwardly extending vapor stack. A conduit may be provided for introducing a flow of air into the evaporation tank thereby facilitating evaporation of the fluid sewage. Return flow of condensate from the vapor stack into the evaporation tank is prevented by a baffle member and drain conduit operatively associated with the vapor stack.

Abstract: The installation comprises two essential elements, on the one hand a water intake apparatus in which various operations of physical and chemical treatment are carried out and, on the other hand, a more elaborate purification apparatus controlled by the intake apparatus, particularly with respect to the transfer of the waters to be treated, this transfer from the intake to the settling being effected by means of a single pump the controlled rate of flow of which conditions the entire treatments up to the settling.

Abstract: The present disclosure is directed to a sewage treatment device of the marine type and operates on an extended aeration principle employing an aerator, clarifier and disinfector. The clarifier is disposed beneath the aerator and the top of the clarifier with a common wall therebetween which forms the bottom of the aerator. A first passage conducts fluid from the aerator to the clarifier and has a central port in the common wall. A second passage conducts fluid from the clarifier to the disinfector. The aerator has an influent inlet and the disinfector has an effluent outlet.The treator includes in the aerator vessel nozzle means for admitting air to the vessel in a direction to cause fluid in the vessel to move orbitally about a vertical axis with the nozzle means being disposed at a level proximate the common wall between the aerator and clarifier.

Abstract: There is described a device comprising a filtering compartment enclosing a filtering body, an inlet for unfiltered water and an outlet for filtered water, said inlet being preceded by a liquid-receiving compartment which communicates with a container containing a sterilizing product at a level lower than the highest permissible water level inside said receiving compartment and above the filtered water outlet level.

Abstract: A system is provided for treating spent geothermal brine to remove silica. The process includes introducing the brine into the reaction zone of a reactor-clarifier and allowing the brine to flow therefrom into the clarification zone of the reactor-clarifier. In the clarification zone, particles settle from the brine and are urged to the center of the tank beneath the reaction zone, and the settled particles are drawn upwardly into the reaction zone by an impeller. The particles mix with the brine in the reaction zone to form a substantially uniform distribution therein to provide nuclei for silica precipitation from the brine. A stream of sludge is removed from the bottom of the reactor-clarifier and disposed of.

Abstract: A batch water treatment system is provided in which ozone is the reactive agent. The system includes a holding tank containing untreated water in communication with a reaction tank in which ozone is dispersed under pressure through a plurality of foraminous diffusers which are connected to a modular ozone generator. Impurities contained in the water are oxidized or broken down by the ozone into forms capable of filtration, and as this treatment process progresses the water is circulated through a conduit to a monitor which measures the level of impurities in the water. Once a predetermined proportion of impurities are broken down and filtered from the system, the monitor automatically activates a drain line to evacuate the reaction tank of the treated water and then refills it with more untreated water from the holding tank to repeat the process.