Abstract: A contaminate separation apparatus for use in separating contaminant materials from cellulose and/or paper fibres in a paper recycling process includes a reservoir for receiving a waste paper slurry therein. The reservoir is provided with an inlet opening for the input of the slurry, one or more fibre discharge outlets or passages, and at least one waste outlet positioned vertically above the fibre discharge outlet opening. An agitator provided in a lower portion of the reservoir generates differential flow currents within the reservoir, to selectively divert plastics, waxes, adhesives and/or other sticky waste materials outwardly towards the waste outlet, while providing a flow of suspended paper and/or cellulose fibres to one or more of the fibre discharge outlets.

Abstract: Wastewater treatment facilities having biofilm contact and solid-liquid separation functions are disclosed, wherein a biofilter unit having biofilm contact, inclination plate precipitation and de-filming functions comprises an inclination plate settler formed with a plurality of inclination plates (2), each plate spaced in parallel relative to water surface at a predetermined downward angle and a predetermined distance apart, and spacings formed by the plates (2) are filled by biofilm media (3,3a) formed with specific surface-increased and bio-affinity materials so that micro-organisms can attach and grow in the shapes of biofilms therein, and de-filming means for separating biofilms attached to and grown on the biofilm media (3, 3a) and solids deposited on the surfaces of the inclination plates (2) by applying shearing force to biofilm media (3, 3a) and inclination plates (2).

Abstract: A contaminate separation apparatus for use in separating contaminant materials from cellulose and/or paper fibres in a paper recycling process includes a reservoir for receiving a waste paper slurry therein. The reservoir is provided with an inlet opening for the input of the slurry, one or more fibre discharge outlets or passages, and at least one waste outlet positioned vertically above the fibre discharge outlet opening. An agitator provided in a lower portion of the reservoir generates differential flow currents within the reservoir, to selectively divert plastics, waxes, adhesives and/or other sticky waste materials outwardly towards the waste outlet, while providing a flow of suspended paper and/or cellulose fibres to one or more of the fibre discharge outlets.

Abstract: A wastewater treatment apparatus having a fixed film media apparatus having insertable high surface area polymer cartridges providing growth surfaces for autotrophic or heterotrophic bacteria and a protective shielding surface which isolates the biofilm from turbulence within the wastewater treatment system. A method of placement of said media apparatus within the aeration and/or clarifier section of the wastewater treatment apparatus.

Abstract: A membrane supported biofilm apparatus has a plurality of hollow fiber gas permeable membranes in a tank containing water to be treated. The membranes have an outside diameter of about 200 microns or less and occupy between 0.5% and 4% of the tank volume. A biofilm supported on the membranes occupies between about 40% and 80% of the volume of water to be treated in a reactor. The membranes may be oriented generally vertically and a spreader may be located near the bottom of the apparatus to disperse the membranes. Wastewater treatment processes are described. A process to dentrify water or treat oxidized contaminants comprises introducing hydrogen into an inner volume of the membranes to grow autotrophic organisms in the biofilm near the membrane and heterotrophic organism near the water. Another process is operated at a biomass concentration of at least 10 g/L and up to about 40 g/L to maintain a biofilm having a surface area of over 1000 square metres per cubic metre of tank volume.

Abstract: An apparatus for generating oxygenated water by dissolving oxygen in water is disclosed. The apparatus includes a reservoir (10) storing drinking water, an oxygen generating unit (20) generating oxygen through electrolysis and supplying the oxygen into a pipe line (11) through which the drinking water flows, and a dissolving unit (30) dissolving the oxygen in the drinking water. The dissolving unit (30) includes a pump (31), a Venturi (32), and a dissolving container (50) and a Venturi (33) which are connected in series to each other. The dissolving container (50) is provided with an oxygen pipe (56) installed at an inlet portion thereof to supply the oxygen generated from the oxygen generating unit (20) into a center portion of the drinking water quickly supplied.

Abstract: There is provided an underwater pulse plasma processing apparatus including: a power supply unit for generating pulse power; at least one discharge unit for discharging the pulse power generated in the power supply unit to a water surface including an air layer or to water including air bubbles; and a plasma processing unit for removing underwater microorganisms through plasma generated by the at least one discharge device.

Abstract: A method and apparatus for remediating a failing wastewater treatment system comprising a positive air, oxygen, ozone, or combination thereof, generating pressure pump (40) directing the air, oxygen, ozone or combination through a tube (50) to an air stone (60) suspended in the effluent. Attached growth bacteria grow on a plurality or random directional brushes (116) in an effluent tank, e.g., septic tank (14).

Abstract: Methods and apparatus for continuing, automated control of wastewater treatment processes. In certain preferred embodiments, method and apparatus for control of aeration in suspended growth biological treatment processes, especially in activated sludge processes.

Abstract: This invention is directed to a wastewater treatment system having a fluidizable media carrying anoxic bacteria in a first treatment zone and a filter membrane positioned in a second treatment zone. A wastewater is contacted with the fluidizable media and further contacted with air and a filter membrane.

Abstract: A method of treating a site containing contaminants and apparatus are described The method and apparatus sparges the site with an air/ozone gas stream delivered with a hydroperoxide, which is a substantial byproduct of a reaction of a contaminant present in the aquifer or soil formation with the ozone.

Abstract: Apparatus and methods for enhanced electrocoagulation processing using enhanced membrane aeration are disclosed for effluent treatment. The apparatus has an enrichment means for establishing an ion rich air/gas stream and a membrane aerator for receiving the ionized air/gas stream and effluent to be treated. An ionized air/gas rich effluent feed stream flows out of the membrane aerator and is received at an electrocoagulation processing assembly for diffused ion enhanced electrocoagulation treatment.

Abstract: A compact biological treatment assembly, apparatus and methods are disclosed, the apparatus including a movable belt biological contactor having selected microbial cultures established thereon. The apparatus further includes a tank having a volume for receipt of wastewater to be treated, first and second drums positioned at the tank each connected to an end of the belt contactor, and a motor or motors together with a controller for rotating the drums cooperatively to move the belt contactor between the drums thereby coiling and uncoiling the belt contactor on the drums.

Abstract: In a waste water treatment apparatus and/or method, waste water containing aminoethanol and dimethyl sulfoxide is introduced into a first denitrification tank within a first waste water treatment apparatus. Malodorous gas generated in the first waste water treatment apparatus is decomposed and treated in a second waste water treatment apparatus where another waste water is treated as another system. The second waste water treatment apparatus has a second nitrification tank including a semi-anaerobic section. The malodorous gas is introduced from the first waste water treatment apparatus into a scrubber. The malodorous gas is treated by sludge which is circulated between the second nitrification tank and the scrubber.

Abstract: A water treatment unit comprising a bath (2) delimited by a bottom wall (3) and a lateral wall (4) developing in elevation from a whole perimeter of the bottom wall (3), means for supplying (14) the water to be treated into the bath (2), at least an aeration device (5) have dissolving functions in collaboration with the means for supplying (14), for introducing a flow of oxygen or ozone into the water contained in the bath (2) in order to saturate the water and/or to give rise to foam, means for eliminating (6) the foam, at least an outlet section (13) of the treated water from the bath (2). The bath (2) develops prevalently horizontally and internally comprises a dividing wall (7) which divides the internal volume of the bath (2) into a turbulent water zone (2a) and a calm water zone (2b).

Abstract: Method and apparatus in which a biomass is carried on a substrate that is fluidised. The fluidised substrate has a layer of distributor particles below it, through which the fluidizing medium passes prior to contact with the fluidised substrate and biomass associated therewith. The effect of the distributor layer is that the particles damp out excessive turbulence in the fluidizing medium, thus preventing undue turbulence of the medium within the fluidised layer. The particles may be recycled through the distributor layer to strip excess biofilm from the substrate particles prior to returning the substrate particles to the fluidised bed.

Abstract: An aeration-less water treatment system includes an anaerobic treatment tank which subjects sewage supplied by a pump to anaerobic treatment by causing the sewage to upflow, and an aerobic treatment tank which subjects anaerobically treated water to aerobic treatment by letting the anaerobically treated water to downflow by natural downflow. The aerobic treatment tank includes an aerobic filter bed section in which carriers to which aerobic microorganisms are adhered are arranged. The aerobic filter bed section subjects the anaerobically treated water to decomposition treatment by putting the anaerobic treatment water in contact with the aerobic microorganisms adhered to surfaces of the carriers. The aerobic filter bed section is provided with an air port which takes in air into under normal pressure, thereby activating the aerobic microorganisms.

Abstract: An activated sludge wastewater treatment system is provided. The disclosed system includes: an uncovered activated sludge basin; a high purity oxygen aeration system; a secondary clarifier; a return activated sludge line and a waste activated sludge line; wherein the system operates at a solids loading of between about 3000 mg and about 10000 mg of suspended solids per liter of mixed liquor; a dissolved oxygen level in the aeration basin in the range of between about 5 mg to 15 mg; and a solids retention time of between about 7 days and 40 days.

Abstract: A system and method for the treatment and reduction of sludge via ozonation in a wastewater treatment process is disclosed. The sludge treatment system comprises: a sludge ozonation reactor coupled to an activated sludge treatment basin and adapted to receive a liquid stream of sludge containing biosolids from the activated sludge treatment basin. The sludge treatment system also includes an ozone-enriched gas injection system operatively coupled to the reactor and adapted to inject ozone-enriched gas into the liquid stream at or upstream of the sludge ozonation reactor. The sludge ozonation reactor is configured to allow effective gas-liquid contacting between the ozone-enriched gas and the liquid stream so as to oxidize the biosolids in the liquid stream and initiate bacterial cell lysis thereby reducing the biosolids. Upon reduction of the biosolids, the liquid stream is returned via a return line to the activated sludge basin or other discharge point.

Abstract: A bioreactor is for processing a fluid stream. The bioreactor may include a bioreaction chamber for receiving the fluid stream therethrough, a pair of spaced apart gas header assemblies within the bioreaction chamber for coupling to first and second gases, a first plurality of hollow fiber membranes (HFMs) extending between the pair of gas header assemblies for introducing the first gas into the fluid stream within the bioreaction chamber, and a second plurality of HFMs extending between the pair of gas header assemblies for introducing the second gas into the fluid stream within the bioreaction chamber.

Abstract: A wastewater treatment system including a biological reactor is disclosed. At least one controlled-reaction-volume module is provided to the biological reactor. The at least one controlled-reaction-volume module includes a fixed-film media for supporting a biological growth. At least one mixer, such as, for example, a high momentum mixer, for communicate a fluid to the at least one controlled-reaction-volume module so that wastewater and the biological growth communicate to thereby treat the wastewater.

Abstract: Method for treating contaminants at a site, especially a deep well site, includes delivering a first stream of a first gas to a first port of a laminar microporous diffuser and delivering a second stream of a second gas to a second port of the laminar microporous diffuser to effect mixing of the first and second streams of gases within the laminar microporous diffuser.

Abstract: Disclosed is a system for treating wastewater. The system includes a microorganism clad structure positioned in a body of wastewater such that the microorganism clad structure is at least partially submerged in the body of wastewater. The apparatus also includes an aeration device, such as a propeller-type, surface mounted aeration device, supplying a horizontal flow of oxygenated water to the microorganisms attached to the microorganism clad structure such that the microorganisms may carry out a biological process.

Abstract: The present invention relates to a vertical-horizontal filter unit for the biological purification of polluted water, comprising an upper zone of a soil patch planted with plants, having inlets for the polluted water, and arranged underneath a sand layer with a lower filter zone made of gravel and at least one removal point for the purified water, wherein between the upper and lower filter zones a barrier layer with openings is arranged and the filter unit is sealed against the soil on the sides and at the bottom. The openings in the barrier layer are arranged along the edge and/or the barrier layer does not reach the edge of the patch completely. The invention is characterized in that the upper zone acts as an aerobically cleaning zone and the lower zone as an anaerobically cleaning zone.

Abstract: A device is provided for treating waste water, the device including a closed housing containing at least one stack of disks through which waste water can flow. A circulating pump is provided for pumping the fluid, the pump forming a structural unit including the housing and the stack of disks arranged therein.

Abstract: A water treatment apparatus including a series of pairs of water filtration cells of an upwelling type. Each cell of each pair has a longitudinally extending water conduit in fluid communication between an upper and a lower end of each cell. The first cell of each pair is a fluidized bed type containing a biologically active media, the water entering a bottom of this cell upwelling through the biologically active media to discharge from a discharge port at or near the top of the first cell. The second cell of each pair has the upper end of its water conduit in fluid communication with the discharge port of the paired first cell and contains media which removes nitrates from the water entering and upwelling through the nitrate removing media for discharge from the second cell.

Abstract: In a water treatment system, micro-nano bubbles are used in a production device and a detoxification device as one example of the upstream treatment devices which perform specified treatment with use of water. The micro-nano bubbles are used again in the waste water treatment by a waste water pretreatment device and a waste water treatment device in the subsequent step. Since the micro-nano bubbles are reused, the efficiency of the micro-nano bubbles can be enhanced. Moreover, according to the waste water pretreatment device, treatment water is pretreated with the microorganisms activated by micro-nano bubbles and propagating in a polyvinylidene chloride filler material and then it is introduced into the waste water treatment device in the subsequent step. Thereby it is possible to reduce the waste water treatment load in the waste water treatment device in the subsequent step.

Abstract: A ballast-water treating apparatus that improves the performance of an in-line mixer so as to be able to sterilize a large volume of ballast water within a short period of time. There is provided a ballast-water treating apparatus that includes pipelines for feeding water to a ship's ballast tank(s) and for draining water from the ballast tank(s), ballast pumps on the pipelines, an ozone generator or hydrogen peroxide generator, a gas/liquid injection pipe for introducing generated ozone or hydrogen peroxide into the pipelines; and an in-line mixer that has two blades disposed crosswise in a tubular part composed of a main tubular part, a subsidiary tubular part that has an inside diameter smaller than that of the main tubular part and that is furnished with multiple projections, and a tapered part. The ballast-water treating apparatus can simultaneously carry out mechanical destructive sterilization via a swirling flow and sterilization of chemically active substances by micromixing.

Abstract: Method for bringing ozone into contact with a flow of liquid in which a fraction of the liquid flow is tapped off, a carrier gas laden with ozone is injected into the tapped-off flow, forming gas bubbles, the gas bubbles and the liquid are mixed so as to form a two-phase tapped-off flow, and the tapped-off flow is reintroduced into a descending vertical stream of the main liquid flow, this vertical stream undergoing, at the bottom, a change of direction to essentially the horizontal, the reintroduction of the tapped-off flow being carried out at the lower end of an injection tube immersed in the descending vertical stream of the main flow.

Abstract: A system for treating recirculating nutrients using floating media is disclosed. The system is operated in such way that wastewater influent path is changed between a first mode and a second mode at a certain period of time interval. Wastewater influent at the first mode sequentially flows into a first anoxic tank, a second anoxic tank, and an aerobic tank. Wastewater influent at the second mode sequentially flows into the second anoxic tank, the first anoxic tank, and the aerobic tank. Part of the wastewater that flows into the aerobic tank bypasses the first anoxic tank and the second anoxic tank. Part of the wastewater, which flows from the aerobic tank into the first anoxic tank or from the aerobic tank into the second anoxic tank, continuously bypasses the aerobic tank through an internal recirculation pump.

Abstract: An apparatus and a method are disclosed with which deteriorated edible oil is regenerated into fresher oil by lowering its oxidation degree. The apparatus comprises an air processor unit comprising a first air flow path configured to have an inlet and an outlet and allow air to pass between magnets positioned in close vicinity with their opposite magnetic poles facing each other, and a second air flow path connected to the outlet of the first air flow path and provided with a far-infrared ray emitter member therein; a pump for pressure feeding air to the inlet to the first flow path of the air processor unit; a length of tubing which is connected to the outlet of the second air flow path of the air processor unit, and one or more air spewing holes provided at the tip of the length of tubing. And the method of the invention comprises bringing the air from the apparatus into contact with the deteriorated oil to be treated.

Abstract: The waterborne vessel, in one embodiment, utilizes an underwater tunnel through which passes flowing water, an ozone gas generator, an ozone plus hydroxyl radical gas generator and a source of atmospheric oxygen. A manifold mixer mixes pressurized water independently with the ozone, the ozone plus hydroxyl radical gas and the atmospheric oxygen to produce corresponding oxygenated water mixtures. Each of these oxygenated water mixtures are fed via a conduit system into the confined flow of water passing through the tunnel. A diversion channel with reverse flow channel permits super saturation of diverted flow from the primary underwater tunnel channel to provide super saturated oxygenated water with ozone plus hydroxyl radical gases and atmospheric oxygen water mixtures. A decontamination method is also provided.

Abstract: An apparatus and method for denitrification of treated wastewater from an aerobic wastewater treatment system in which oxygen levels in the aeration chamber of an aerobic digestion vessel are cycled between an anoxic environment, i.e., when the treated wastewater in the aeration vessel contains from just above 0 to just less than 1 ppm dissolved oxygen to an aerobic environment wherein the treated wastewater in the aeration vessel has a dissolved oxygen content of about 1 ppm or higher.

Abstract: A water treatment apparatus including a series of pairs of water filtration cells of an upwelling type. Each cell of each pair has a longitudinally extending water conduit in fluid communication between an upper and a lower end of each cell. The first cell of each pair is a fluidized bed type containing a biologically active media, the water entering a bottom of this cell upwelling through the biologically active media to discharge from a discharge port at or near the top of the first cell. The second cell of each pair has the upper end of its water conduit in fluid communication with the discharge port of the paired first cell and contains media which removes nitrates from the water entering and upwelling through the nitrate removing media for discharge from the second cell.

Abstract: A system for treating feedwater to remove contaminants therefrom, the system comprising at least one high shear mixing device comprising at least one generator comprising a rotor and a stator separated by a shear gap, wherein the shear gap is the minimum distance between the rotor and the stator, and wherein the high shear mixing device is capable of producing a tip speed of the rotor of greater than 22.9 m/s (4,500 ft/min) and a pump configured for delivering feedwater and treatment gas selected from oxygen, air, and chlorine to the high shear mixing device.

Abstract: The present invention is directed to methods and systems for reconditioning a used food processing fluid. The reconditioned fluids can be used in an upstream or downstream food processing application.

Abstract: An apparatus for treating a liquid includes a first flow generator having an outlet for generating a first flow stream and a reaction chamber positioned in proximity to the outlet of the first flow generator and having a cavity adapted to receive the first flow stream from the first flow generator and reverse its direction within the confined space of the cavity. The flow generator may be a cavitation generator for producing multiple cavitation bubbles in the first slow stream, or a nozzle for generating a flow stream devoid of cavitation bubbles. A method for treating a liquid includes directing the liquid into a first flow generator configured to generate a first flow stream of the liquid, and directing the first flow stream from the first flow generator into a cavity of a reaction chamber.

Abstract: An impeller, a system for mixing a fluid, and a method of mixing a fluid in a tank are disclosed. For a sufficiently small impeller diameter and maximum blade tip velocity, the disclosed impeller, system, and method are capable of accelerating a near-zero intake velocity fluid, to generate a mixing zone that is collimated enough to have sufficient velocity vectors to suspend particles at a large distance away from the impeller, while minimizing the required power draw. An impeller may include a hub defining a longitudinal axis and plural blades spaced circumferentially about the hub. Each blade may include a root portion and a tip portion. Each blade may define a leading edge having an approximately circular raked helical geometry. A system for mixing a fluid may include a tank for containing the fluid, a drive shaft for extending into the tank, and the impeller.

Abstract: A water treatment equipment has a raw water tank as a mixing section, a micronanobubble generation tank, a floatation tank, and a treated water tank. Waste water as treatment water is introduced into the raw water tank and mixed with the water containing micronanobubbles produced by the micronanobubble generation tank. Thereafter, the waste water, as treatment water, is introduced into a lower mixing section of the floatation tank from the raw tank by a raw water tank pump. Also, treatment water containing fine bubbles is introduced into the lower mixing section from a pressure tank. Therefore, the micronanobubbles is mixed with the fine bubbles in the lower mixing section of the floatation tank, thereby almost all the suspended matter in the treatment water is surfaced. Thus, the water treatment equipment enhances separatability of suspended matter.

Abstract: The invention relates to an arrangement for introducing gas bubbles into a liquid, a device (1) for fastening a perforated aeration membrane (2) to an aerator base plate (3) as well as to an aerator base plate (3) therefor. The aerator base plate (3) has an undercut groove (4) in at least one rim region thereof, into which a locking body (7) clamping the membrane (2) in said groove (4) fits clampingly. The locking body (7) has a generally circular cross-section. The groove (4) has an at least substantially oval cross-section. The locking body (7) is designed to be generally cylindrical.

Abstract: The application device for liquid containing micro-nano bubbles generates micro-nano bubbles in a wide size distribution with use of a submerged pump-type micro-nano bubble generator and a spiral flow-type micro-nano bubble generator. A micro-nano bubble generating aid metering pump is controlled by a bubble level meter and a level controller, so that the supply amount of a micro-nano bubble generating aid is controlled in response to the level of bubbles from a fluid level. The supply amount of a micro-nano bubble generating aid is also controlled by a turbidimeter and a controller in response to the turbidity of the liquid in a micro-nano bubble generation tank, while the amount of air supplied to the submerged pump-type micro-nano bubble generator is controlled in response to the turbidity of the liquid. Therefore, the device can produce a large amount of various micro-nano bubbles in a wide size distribution more economically.

Abstract: Processes for microbial digestion of organic material, and preparation of substrates for microbial digestion, suitable for the production of biomethane, from municipal and industrial waste water or from municipal or agricultural waste. In addition, a method for identifying a composition of matter that is suitable for microbial digestion, more particularly anaerobic digestion and/or mixed aerobic and anaerobic digestion. Also, a system and process for detoxifying organic wastes, such as those which may be present in waste water from industrial processes.

Abstract: An industrial cleaning system is provided which may comprise a treatment device having at least one inlet and at least one outlet. The treatment device has a gaseous cleansing agent, such as supercharged ozone. It also has a container, wherein the one inlet is operatively connected to the container. The one outlet is operatively connected to the container. The container, the treatment device, the inlet and the outlet are a closed loop system. A contaminated solution is disposed in the container. Power supply is operatively connected to the treatment device. The power supply is adapted to circulate the gaseous cleansing agent through the outlet and into the contaminated solution so as to remove contaminates from the contaminated solution.

Abstract: A water treatment apparatus has a turbidity meter, which is a detection part, for detecting a generation state of bubbles in a micro/nano bubble generation state confirmation tank, as a turbidity of treatment water. The water treatment apparatus also has a controller, which is a control part, for receiving an signal representing the turbidity of treatment water detected by the turbidity meter, to control openings of air flow control valves in an interlocked manner in response to the signal, so that the amount of air flowing through the control valves is automatically controlled. The openings of the air flow control valves are controlled in an interlocked manner by the controller in such a way that the signal representing turbidity shows that the treatment water within the confirmation tank is whitely turbid (i.e., the turbidity shows not less than a specified value).

Abstract: A stormwater treatment system including a substantially water impermeable treatment container for treating stormwater through a bioretention mechanism. The treatment container includes an overflow/bypass opening to receive stormwater that bypasses the treatment container filter media, or is only partially treated as a result of high stormwater flows in excess of the capacity of the container to treat the stormwater. The stormwater is directed into the container through an inlet, such as an inlet pipe, preferably connected to a roof drain system for processing and treating stormwater from the roof of a building. The overflow/bypass opening may be adjacent the top wall or bottom wall of the container.

Abstract: It is an object of the invention to provide an effective technique for detecting the quality of water with high accuracy. A representative water treatment apparatus includes an aerobic treatment region that treats water aerobically, a downstream region in which the water aerobically treated in the aerobic treatment region flows, a water quality sensor that is submerged in the downstream region and detects the water quality and a sensor washing arrangement that washes the water quality sensor by supplying the water of the downstream region to the water quality sensor at a flow rate higher than water flowing around the water quality sensor. As a result, sludge generated due to aerobic treatment can be prevented from being deposited on the water quality sensor and/or deposited sludge can be removed, so that the accuracy of water quality detection of the water quality sensor can be enhanced.

Abstract: A system is disclosed herein for treating wastewater liquid by utilizing aerobic biological species. The contaminated wastewater stream is pretreated in a dissolved air flotation system to remove suspended solid waste, including large particles such as fats, grease, and physically emulsified oils. The purified wastewater containing dissolved waste is thereafter oxygenated and further decontaminated in a bioreactor tank. Biological species in the bioreactor tank consume oxygen and perform bodily functions that converts dissolved waste into easily removable carbon dioxide and suspend solids. Oxygen consumed by the biological species is replenished by pumping the wastewater though a liquid-oxygen mixer. A controller regulates the speed of the pump based on real-time oxygen concentration measurements provided by a corresponding oxygen probe disposed within the wastewater in the bioreactor tank.

Abstract: A biological treatment method and device for organic wastewater, whereby the amount of minute organisms which reduce the amount of excess sludge and held within an activated sludge tank can be stabilized so that the treatment can be stabilized, are provided. Substrates for growing dispersed bacteria and/or dispersed bacteria are supplied to a sludge treatment tank 51 which reduces the sludge by the minute organisms, so that the minute organisms grow stably and reduce the sludge. Specifically, a first and a second biological treatment step are conducted respectively in a first activated sludge tank 21 and a second biological treatment tank 31. The sludge included in effluent which flows from the biological steps is separated in a sedimentation tank 41. The generated sludge obtained is supplied to the sludge treatment tank 51.

Abstract: The present invention provides a treating unit of activated sludge for wastewater treatment and a treating apparatus having the same. The treating unit is constructed by a cage-shaped supporting structure which defines an interior space for containing the microbial cell therein. The present invention provides a measure for simultaneous removal of organics and nitrogen compounds from the wastewater under a condition of controlled aeration, and makes the configuration of treating apparatus as well as the treating process more simplified. It is also an alternative to replace the traditional A2O process. According to the present invention, the design of sludge return, which is essential for the conventional activated sludge treatment, is not needed. Moreover, the present invention is compatible with the conventional activated sludge treatment process and is advantageous in its short start-up period during which a stable operation is achievable.

Abstract: The present invention generally includes a septage treatment system comprising: (a) a primary treatment process system comprising: (1) a receiving station adapted to receive septage from a vehicle and to pump the septage; (2) at least one equalization tanks adapted to receive septage from the receiving station; and (3) at least two mixing and odor control tanks adapted to receive septage from the equalization tanks, and to generate waste activated sludge; (b) a primary settling tank adapted to receive effluent from the mixing and odor control tanks, and to generate waste activated sludge; (c) a secondary treatment process system adapted to receive comprising: (1) at least one aeration tank adapted to receive waste activated sludge from the primary treatment process system and to generate water effluent; and (d) a tertiary treatment process system adapted to receive comprising: (1) at least one wetland ditch adapted to receive water effluent from the aeration tank and to generate filtered water effluent; (2) a