Abstract: The present invention relates to an apparatus for treating ballast water, the apparatus being capable of treating ballast water so as to meet the ballast water standard established by the IMO exactly at low costs. The treatment apparatus of the present invention comprises a filter (4) that filters sea water to trap aquatic organisms, a bactericide supply apparatus (5) that supplies bactericide to the filtrate sea water, and a venturi tube 7 that introduces the sea water to which the bactericide is added, to produce cavitation in the sea water, thereby diffusing the bactericide and also damaging and destroying aquatic organisms in the sea water.

Abstract: When liquefying sludge, e.g as in U.S. Pat. No. 6,808,636, the combination of temperature, pH, and shearing, is synergistic. Described here is a system that provides for collating test sampling and full-scale data inputs, recording achieved results and the engineering parameters that achieved those particular results. The data is presented in e.g a table format, which assists design engineers to zero-in on the combinations of parameters that will likely give the desired results.

Abstract: The present invention comprises methods and systems that use acoustic radiation pressure.

Abstract: The invention relates to an apparatus for separating solids from a liquid, comprising at least one reservoir or basin (12) for receiving solid-loaded liquid and having at least one inflow (1, 27, 101) and/or outflow (2, 111); and at least one separation device (9, 16, 25, 55, 56, 62, 63, 108) arranged in the reservoir or basin (12) for the solids, wherein the separation device has at least one separation surface, which is at least adjustable between a separation position (?) and a cleaning position (?). According to the invention, the apparatus comprises a control device (57, 58; 64, 66; 106) coupled or connected to the separation device (9, 16, 25, 55, 56, 62, 63, 108) and being operable by the liquid supplied into the reservoir or the basin (12), by means of which the position of the at least one separation surface can be changed or varied. Further a separation device (9) having at least one separation surface is provided, which comprises a surface coating and/or an at least partially structured surface.

Abstract: Systems and methods are provided for the removal and disposal of arsenic from an aqueous medium. The systems and methods include the removal of arsenic from a source by contact with either a chemically treated natural or synthetic zeolite, for example a ferric-loaded zeolite. The spent zeolite is disposed of at an appropriate arsenic disposal site. A system for monitoring and maintaining an arsenic removal/disposal system by an off-site provider is also disclosed.

Abstract: A means for purifying a liquid comprising: a means for a first filtration of said liquid; a means for causing said liquid to be in turbulent flow; a means for ionizing said liquid in turbulent flow; a means for irradiating said liquid to light in the 100 to 300 nanometer range; a means for a second filtration of said liquid, and a means for filtering out aromatic ring structures.

Abstract: A dialysis system includes: (i) a dialysate pump; (ii) a patient line having a connector configured to be attached to a peritoneal patient part; (iii) an extracorporeal circuit; (iv) a blood pump in fluid communication with the extracorporeal circuit; (v) a blood filter in fluid communication with the extracorporeal circuit; and (vi) a control unit configured and arranged to selectively perform a therapy which (a) the blood pump is deactivated and the dialysate pump is caused to pump dialysate through the patient line or (b) the blood pump is activated to pump blood to the blood filter and the dialysate pump is caused to pump dialysate to the filter/extracorporeal circuit and/or remove fluid from the filter.

Abstract: Described herein are methods and systems for combination membrane/biolytic filtration. In one embodiment a filtration system is operated under suction. The arrangement includes a feed tan (5) having a smaller filtrate vessel (6) positioned therein. The region within, the feed tank (5) not occupied by the filtrate vessel (6) is partially filled with layers of decomposing and decomposed solid organic waste material to form an aerobic filter bed (7) of the type used in biolytic filtration as described above. A further module vessel (8) is mounted within the filtrate vessel (6) to form a membrane chamber (9) containing a membrane filtration module (10).

Abstract: A system and method for integrating microfluidic components in a microfluidic system enables the microfluidic system to perform a selected microfluidic function. A capping module includes a microfluidic element for performing a microfluidic function. The capping module is stacked on a microfluidic substrate having microfluidic plumbing to incorporate the microfluidic function into the system. An infusion pump for delivering a fluid from a fluid source may be integrated in a microfluidic chip using a capping module having pumping components formed therein.

Abstract: A method and system are provided for high-precision separation of pharmaceutical or biotechnology liquids. The separation can be in accordance with direct flow filtration, tangential flow filtration or preparative chromatography. Movement of the pharmaceutical or biotechnology liquid within a flow path is controlled according to a selected pattern. Selected patterns include automatically and progressively increasing the flow rate within the unit, automatically and progressively increasing the pressure within the unit or initially proceeding according to a relatively high constant flow rate and switching to a relatively high constant pressure at a time when a given parameter is attained.

Abstract: A system (1) for separating a fluid stream (2) comprising gas, a light liquid and a heavy liquid, the system comprising a separation vessel (5) that is arranged to define a downwardly extending separation space and comprises a downwardly sloping tube (8), the separation space having an inlet (10) for the fluid stream at a first height, an outlet (20) for heavy liquid at a second height below the first height, an outlet (30) for light liquid at a third height between the first and second heights, an outlet (70) for gas above all outlets for liquid, wherein a further outlet (51, 56) for light liquid is provided at a fourth height between the first and third heights, and wherein at least the outlet at the third height is provided with a control valve (33) that is operative to open and close in dependence of the type of liquid in the pipes at that level, and a method of separating a fluid stream comprising gas, a light liquid and a heavy liquid in such a system, wherein an indication of height of an interface bet

Abstract: Disclosed is a skimming system for removing a floating layer from a water surface. The skimming system comprises at least one guide element that is movable relative to the floating layer, which guide element is provided with at least one unit that catches the floating layer The at least one removal unit is provided with at least one collecting container that is detachably attached to the guide element. The collecting container is furthermore vertically adjustable, so that it is not only easy to detach and exchange the collecting container but that it is moreover possible to position the floating layer removal means at a desired depth in or below the floating layer. In this way an optimum removal of the floating layer can be realised. The inlet of the collecting container is present at a location where the extent to which water is mixed with the floating layer is minimal.

Abstract: A continuous renal replacement therapy (CRRT) device is provided that weighs between 2 and 10 pounds. The CRRT device can be portable, mobile or completely worn on the person of the patient. Blood and dialysate are each pumped in a pulsed or pulsatile manner through a dialyzer such that a significant portion of the peak pulse of the blood flow coincides with a significant portion of a low pulse portion of the dialysate flow. An differential pressure between a dialysate inlet of the dialyzer and the blood inlet of the dialyzer periodically changes from a high differential pressure of between 70 and 120 mmHg for a first time period and a low differential pressure of between ?10 and 10 mmHg for a second time period. The frequency of the high and low differential pressure cycle is between about 0.5 and 4 Hz.

Abstract: A ballast water treatment system for treating ballast water for a vessel has a pathway with for navigable raw water for to the tank and a discharge for discharging water back to the body of navigable raw water. A back washable filter in the pathway receives the raw water and screens sediment from the raw water to produce initially processed water which contains at least some marine organisms. A UV or other biocidal device is connected between to the filter and the ballast tank, for disabling or killing the marine organisms in the initially processed water to produce treated ballast water for the main outlet to the ballast tank.

Abstract: A UV light source water disinfection system includes a UV light source that is driven or controlled by a ballast. Improved start-up scenarios are provided by use of a separate heating wire around the lamp or employing an inductive-coupled system to provide initial high power requirements. The UV lamp is discontinuously operated in order to extend the life of the system, save energy, and periodically dose standing water to prevent regeneration of undesired microorganisms.

Abstract: A filtration system comprising a plurality of filters. Each filter defines a respective filter flowpath extending adjacent a respective filtration medium for tangential filtration by the filtration medium of fluid passing through the filter flowpath. The system also comprises a manifold connected to each filter, the system being selectively operable in a first state in which the manifold and the filter flowpaths form part of a first continuous flowpath around which fluid circulates passing in parallel through the filter flowpaths and a second state in which fluid circulates around a second continuous flowpath including the filter flowpath of at least one but not all of the filters, the second continuous flowpath having a lower volume than the first continuous flowpath and fluid passing into the second continuous flowpath from the manifold responsive to tangential filtration in the second state.

Abstract: The disclosed invention is a fixed bed ion exchange water purification system. It employs a combination of electronically controlled process steps and specific systems configurations to duplicate the effects of moving resin beds from one operating position to another as is required in moving bed ion exchange water purification systems. The intention combines features of single fixed bed ion exchange systems with those of a moving bed system. The invention applies to the treatment of water having typical industrial and drinking water concentrations of various ions.

Abstract: The disclosed invention is a fixed bed ion exchange water purification system. It employs a combination of electronically controlled process steps and specific systems configurations to duplicate the effects of moving resin beds from one operating position to another as is required in moving bed ion exchange water purification systems. The intention combines features of single fixed bed ion exchange systems with those of a moving bed system. The invention applies to the treatment of water having typical industrial and drinking water concentrations of various ions.

Abstract: The disclosed invention is a fixed bed ion exchange water purification system. It employs a combination of electronically controlled process steps and specific systems configurations to duplicate the effects of moving resin beds from one operating position to another as is required in moving bed ion exchange water purification systems. The intention combines features of single fixed bed ion exchange systems with those of a moving bed system. The invention applies to the treatment of water having typical industrial and drinking water concentrations of various ions.

Abstract: A control valve for a water treatment system which includes a turbine (110) rotatably mounted within a water receiving chamber. A nozzle assembly (122) defines first and second fluid paths, one of the flow paths may include a fluid pressure response valve element (320) for controlling fluid flow along the one path. The system also comprises a nozzle assembly (122?) defining a throat (302?) extending from an inlet and terminating in a arcuate outlet conforming to the periphery of the turbine. A plurality of spaced apart and angled vanes (404) are disposed in the throat.

Abstract: The invention is directed to a system for removing waste material from a fluid flowing in a channel. This system may incorporate the use of a trap for collecting the waste material while allowing the fluid to pass; a rake for removing the waste material away from the trap; a drive assembly for moving the rake to remove the waste material; a prime mover for operating the drive assembly; and a variable speed controller configured for operating the prime mover over a variable range of speeds.

Abstract: A water treating device includes a water container for containing water; an electrolyzing chamber for sterilizing water; a water treatment line which couples the electrolyzing chamber with the water container; a sensor for measuring residual chlorine concentration; and a device for controlling the amount of the water to be electrochemically decomposed in the electrolyzing chamber on the basis of the residual chlorine concentration measured by the sensor to keep the residual chlorine concentration of the water to be fed back into the water container within a predetermined range. A bypass line is provided which is branched from the water treatment line upstream of the electrolyzing chamber for sampling the water, introducing the sampled water into the sensor for the measurement of the residual chlorine concentration thereof, and discharging the sampled water into the electrolyzing chamber after the measurement.

Abstract: This invention provides a method and apparatus for a hemodiafiltration delivery module that is used in conjunction with a UF controlled dialysis machine to enable hemodiafiltration therapy to be performed. The advantage is that one can fully utilize a current functioning dialysis machine to perform a hemodiafiltration therapy as opposed to purchasing a completely new machine that offers this capability.

Abstract: A system and process for the treatment of wastewater in a series of sequencing batch reactor basins wherein wastewater is sequentially fed, treated and discharged on a continuous basis.

Abstract: The present invention provides a controller for a water softener having an ion exchange resin capable of receiving hard water ions from hard water during a softening step and releasing the hard water ions during a regeneration step. The controller includes a processor programmed to cause termination of the softening step and initiate the regeneration step when both a first and a second condition are met. The first condition is met when the resin is saturated with hard water ions, and the second condition is met when current demand for soft water is at or below a prescribed flow rate.

Abstract: A process for producing a purified aqueous hydrogen peroxide solution, comprising passing a charged aqueous hydrogen peroxide solution containing impurities through a purifier tower packed with an ion exchange resin, a chelate resin or an adsorption resin to thereby purify the charged aqueous hydrogen peroxide solution, wherein there are provided a feed pump of given output capable of causing the charged aqueous hydrogen peroxide solution to flow to the purifier tower and further a flow sensor capable of sensing a flow rate of charged aqueous hydrogen peroxide solution being fed to the purifier tower and wherein the output of the feed pump is controlled in cooperation with the flow sensor so as to bring the charged aqueous hydrogen peroxide solution into contact with the ion exchange resin, chelate resin or adsorption resin while maintaining the flow of charged aqueous hydrogen peroxide solution at a constant rate.

Abstract: An apparatus is disclosed which allows the hydrate formed in the hydrate formation region of a desalination fractionation apparatus to be cooled as it rises in the apparatus. This has the beneficial effect of increasing its stability at lower pressures and reducing the depth at which the hydrate will begin to dissociate. The present invention provides for more efficient management of the distribution of thermal energy within the apparatus as a whole by controlling the flow of water through the system—particularly residual fluids remaining after hydrate forms—such that it is substantially downward through the fractionation column and out through a lower portion thereof. Hydrate thus separates from the residual fluid at or nearly at the point of formation, which helps keep the hydrate formation region of the apparatus at a temperature suitable for the formation of hydrate and improves efficiency.

Abstract: This pump has two end chambers (2, 3) in which are housed two pistons (4, 5) which pump sea water towards an reverse osmosis membrane (7), and a central chamber (8) in which a sliding block is housed, activated by displacement of the pistons (4 and 5) performing the piloting of a directional valve (9). This pump alternatively provokes the inversion of the external pressure intake towards the front areas of the end chambers (2, 3) and the inversion of the pressure intake of the water rejected by the membrane towards the rear areas of said chambers (2, 3).

Abstract: The invention disclosed relates to a method and apparatus for the denitrification of groundwater in situ in an aquifer under substantially anaerobic conditions, the method comprising (a) providing a network, including an extraction well for removal of groundwater from the aquifer and a plurality of injection wells for returning groundwater to the aquifer, the injection wells being arranged in a line substantially perpendicular to the direction of groundwater flow, the extraction well being located downstream or upstream of the line of injection wells, and the spacing of the wells and the number of injection wells being determined by the mathematical relationship J = C p + nC 1 W → min

Abstract: This invention provides a resist recycling apparatus and the method for resist recycling. A resist recycling apparatus includes a viscosity control tank being supplied with wasted resist liquid, a solvent tank supplying a solvent to the viscosity control tank, a viscometer measuring viscosity of the resist in the viscosity control tank, a control portion calculating the resin density of the resist according to the viscosity measured by the viscometer and the temperature of the resist, determining an amount of solvent to supply to the viscosity control tank according to the difference between the calculated resin density and a predetermined resin density, and a filter for removing dust from the resist.

Abstract: A wastewater treatment system for treating a wastewater stream from industrial and municipal sources uses a control system to sequence and supervise the treatment steps in a batch flow mode of operation or a continuous flow mode of operation. In operation, the wastewater treatment system predominantly operates in the batch flow mode. However, the wastewater treatment system operates in a continuous flow mode when the influent wastewater stream exceeds the system's nominal design flow transition point. The control system receives an input signal, relating to the influent flow rate, and switches one or more reactors of the wastewater treatment system from the batch flow mode to a continuous flow mode according to a control algorithm.

Abstract: A water treatment device wherein the water during treating is brought into contact with a treatment medium (29), whereby this treatment medium (29), either by means of a regeneration medium (42) or not, is regenerated regularly and whereby, a regulator (59) is used which is provided, with a hydraulically driven first monitoring mechanism (24) with which the water consumption can be controlled and the start of the regeneration cycle can be ordered, and with a hydraulically driven second monitoring mechanism (25) with which the regeneration cycle is controlled and characterized in that both monitoring mechanisms (24-25) are driven by means of the same volumeter (23).

Abstract: To bring maximum sterility in a stationary drinking water supply installation with a water tank, the invention provides a method for filling a drinking water installation in which, after filling a tank with fresh water, the water is circulated at least over a filter. The invention also provides an apparatus for drinking water supply from a drinking water tank with a supply pipe connectable to a fresh water source and which has a three-way valve (6) with an inlet (4) connected to the fresh water intake (3), as well as a second inlet (22) and a supply pipe (5) leading to the tank (2). There is also a return pipe (21) leading from the water tank (2) to the second inlet (22) of the three-way valve (6) and a circulating pump (9) in the water circuit formed by the return pipe (21) and supply pipe (5).

Abstract: A reverse osmosis or filtration system uses one or more hydraulic intensifiers (integrated motor and pump) to provide all the high pressure fluid to a semi-permeable membrane or filter, the intensifier being powered by the high pressure flushing flow leaving the membrane or filter uses, and by a pressurized inlet flow of fluid to be purified or filtered.

Abstract: The invention pertains to a method and apparatus for treating blood. If pressure constraints occur during the execution of blood treatment, the pump flow rates are rapidly decelerated to remove the pressure constraints so that the treating operation will restore the normal state as quickly as possible. After the pressure constraints have been removed, the pump flow rates are restored at a preset acceleration without causing any excessive pressure buildup due to an abruptly increased load. If the pump flow rates immediately after the start of operation of the processor are increased through two stages of acceleration, the target flow rates can be rapidly reached without exerting any abrupt load on the processor and, hence, without causing an excessive pressure buildup.

Abstract: A process of cost-optimized control of a mechanical filter that is situated in a flow of cooling water driven by a cooling water pump in a heat exchanger and that can be regenerated by means of a flushing system involves the following steps: at least one measurement value is determined from which the filter's current degree of soiling is derived and this value is fed to a flush command generator; by means of the functional dependencies and/or data stored in the flush command generator a first and a second performance loss are calculated at predeterminable intervals, the first performance loss comprising the performance loss due to the filter's degree of soiling and the second performance loss comprising the performance loss due to a flushing operation at the current degree of soiling; from the progression over time of the first computed performance loss are determined the total performance losses since the last regeneration as a result of the soiling of the filter; a current second energy loss is calculated f

Abstract: A process and system recycles and reuses gray water generated by dishwashers, showers, carwashes, and clothes washers while maintaining the same cleaning performance as current systems. Hollow-fiber membrane ultrafiltration is used to reduce fresh water supply demands and gray water generation where voluminous quantities of the latter are generated. For a clothes washer, the gray water reuse or recycle system consists of a closed-loop water recycle which can be redirected to a storage tank for other applications, or directly used in situ with a clothes washer for subsequent rinse cycles. The process uses, at a minimum, 50% less water than conventional residential and commercial washers, and also decreases detergent requirements by 30% because a portion of the rinse water can be re-used for subsequent wash cycles.

Abstract: A recycling apparatus which preferably treats used antifreeze/coolant in four cycles is disclosed. The recycling apparatus includes a number of tanks for storing the antifreeze/coolant during the various treatment cycles, a number of containers for storing chemical reagents used to chemically treat the antifreeze/coolant and a number of filters used to capture impurities suspended in the treated antifreeze/coolant. During a fill cycle, the used antifreeze/coolant is introduced into a treatment tank and the concentration of the antifreeze/coolant is adjusted, if necessary, to a predefined range. During a mix cycle, the used antifreeze/coolant is mixed with various reagents to adjust the pH value, as well as to coagulate and flocculate the impurities. A reverse mixing and aspiration of the antifreeze/coolant in the tank during the mix cycle ensure that the reagents will mix well and react with the impurities in the used antifreeze/coolant to form a sludge.

Abstract: A method of operating a filter system of a swimming pool in proportion to the degree of contamination of the water in said pool by processing a signal representative of the number of persons within the pool and other values characteristic of the pool and the filter system to derive a signal for controlling the output of said filter system.

Abstract: A hydraulic circuit includes a fluid pressure inlet line (1); a fluid pressure delivery line (2); and a filter unit (FU) interposed between the inlet line (1) and the delivery line (2), with the circuit incorporating an automatic back flushing facility. The latter comprises a valve arrangement A, B, C, D, capable of temporarily preventing initial flow of fluid through the filter unit (FU) in a delivery direction, causing reverse fluid flow through the filter unit (FU) in a back flushing direction, for a predetermined period, with the flushing sequence initiated by the valve arrangement sensing a flow of fluid, at a predetermined pressure, and after the predetermined period, causing fluid flow in the normal delivery direction.

Abstract: A separator (10) for separating a heavier liquid from a lighter liquid is disclosed which is intended to operate between a fuel tank (12) and a fuel pump connected to the fuel outlet (24) of the separator (10). The separator includes a float (30) which is light enough to float on the heavier liquid and which is heavy enough to sink in the lighter liquid. The float controls opening and closing of a valve (44, 46) through which heavier liquid is disclosed from the separator. As heavier liquid accumulates, the float lifts to open the valve (44, 46). A plate (34) subjected to a force caused by fuel flowing into the separator through the inlet (16) prevents the float opening the valve whilst the separator is in sub-atmospheric pressure. The plate can be replaced by a diaphragm which is subject on one side to atmospheric pressure and on the other side to the pressure in the separator.

Abstract: A filter system for a liquid, usually water, is disclosed. The system includes two filters, each having a housing and a filter medium located in the housing through which the liquid flows in one direction to be filtered. A pressure operated distributing valve alternates the flow of water from one to the other of the filters and pressure regulators and check valves or pressure regulators alone divert a portion of the filtered water to backwash the filter medium in the other filter.

Abstract: A system for controlling effluent discharge having an inlet for passing wastewater, a filter connected to the inlet for removing solids from the wastewater, a filtered water retaining tank connected to the outlet of the filter for accumulating a portion of the water passed from the filter, a filtered water outlet connected to the outlet of the filter so as to pass filtered water exterior of the system, and a controller connected to the filtered water retaining tank so as to selectively pass a flow of the accumulated water into the filter. The filter includes a first body portion connected to the inlet, a second body portion connected to the first body portion, a filter screen disposed in the second body portion between the first body portion and the outlet and having a plurality of openings therein, and a particulate filter material filling an area between the second body portion and the filter screen.

Abstract: A method and apparatus for operating a filter system of a swimming pool in proportion to the degree of contamination of the water in said pool by processing a signal representative of the number of persons within the pool and other values characteristic of the pool and the filter system to derive a signal for controlling the output of said filter system.

Abstract: Apparatus for partial dewatering of raw sludge, includes at least two filter units each defining a filter chamber which receives raw sludge and has an outer wall surface formed as filter for discharge of filtrate from raw sludge. Accommodated within the filter chamber is a double-acting plunger which extends across the entire cross section for dividing the filter chamber in two working chambers, and reciprocates in the filter chamber along the inside wall surface for movement between a first end position and a second end position, with each working chamber having an inlet for receiving raw sludge from a suitable conveying unit and an outlet for discharge of partially dewatered raw sludge.

Abstract: The invention is directed to a water treatment system including a treatment tank having an ion-exchange mineral bed or filter bed therein, and a valve head assembly disposed on top of and in fluid communication with the treatment tank. The valve head assembly includes a passage for allowing a flow of fluid through the valve head assembly, a vacuum pressure creating device disposed within the passage, a drain disposed within the passage and at a downstream side of the vacuum pressure creating device, and a valve disposed within the passage and at a downstream side of the vacuum pressure creating device. The valve is movable to an open position and a closed position for allowing fluid flow through the vacuum pressure creating device, whereby a portion of fluid flows through the drain and a lesser remaining portion of fluid flows through the valve when the valve is in the open position.

Abstract: The dialysis apparatus in accordance with the present invention is provided with main piping connecting a blood inlet and a blood outlet, and having disposed therealong a blood pump, a dialyzer, and a venous-side chamber, in that order from the blood inlet side; and with a supplementary fluid supply mechanism, which is connected between the blood inlet and the blood pump through the medium of a branch pipe branching from the main piping; this apparatus is furthermore provided with a first clamp provided between the blood inlet and the blood pump of the main piping, a second clamp provided between the venous-side chamber and the blood outlet, and a third clamp provided on the branch pipe. In addition, by means of this dialysis apparatus, it is possible to reliably and easily return blood within the main piping of the dialysis apparatus to the body of the patient after the completion of blood dialysis.

Abstract: In a dialysis apparatus having a dialyzer and a single balance chamber, the internal volume of the balance chamber is preferably at most 2/3 of the volume of the dialysis fluid chamber within the dialyzer. As a result, during the dialysis fluid recirculation cycle, at most 2/3 of the volume of fluid within the dialysis fluid chamber will be replaced by fresh dialysis fluid. Preferably, the duration of the recirculation cycle is approximately equal to the duration of the balance chamber filling cycle.

Abstract: Reactor for the optimized ozonization of water intended for human consumption, in which the direct oxidizing action of the ozone is supplemented by the radical oxidizing action of the ozone, the latter being intensified by the introduction of hydrogen peroxide, characterized in that it comprises three contact tanks arranged in series: a first contact tank receiving the water to be treated and intended for the direct and rapid oxidizing action by the ozone which is introduced into the said tank and brought into contact with the liquid to be treated; a second contact tank intended to ensure the disinfection of the liquid and into which is injected the quantity of ozone necessary to maintain in the liquid to be treated the residual ozone concentration necessary for the disinfection of the water; and a third contact tank intended to ensure the radical action of the ozone, into which there is injected, besides the ozone, a quantity of hydrogen peroxide intended to increase the quantity of OH radicals available for

Abstract: Sewage water with entrained solids as an effluent is fed into the trough bottom shaped process tank that is a totally enclosed tank other than for inlets and outlets therefore. The system disposes of water from sewage effluents and also residual solids thereof and is fed sewage to a controlled depth in a tank trough with high temperatures used to sterilize the effluent. A two-speed motor driven mixer driven at low speed continually mixes and blend the sewage effluent at the same time air from a blower is bubbled through the mixture. Heat is added to increase water vapor saturation capability of the air flow through the system. The air/vapor mixture flows through a recuperative heat exchanger supported within the tank above the surface of sewage effluent contained therein, absorbing heat with flow, through a catalyst bed in a chamber with circulation through the heat exchanger and on out an exhaust vent with impurities oxidized and vented with air flow.