Abstract: An apparatus for treating solid waste to produce a biomass product includes a cylindrical vessel includes a cylindrical vessel comprising a loading doorway and a discharge doorway at opposite ends of the cylindrical vessel. At least two drive tires are mounted on the cylindrical vessel perpendicular to the cylindrical axis. The drive tires each include a smooth exterior surface for rotating the cylindrical vessel without gear teeth and without sprocket teeth. A drive mechanism is coupled to the drive tires for rotating the cylindrical vessel around the cylindrical axis. The drive mechanism includes drive wheels that support and provide torque to the cylindrical vessel from a contact surface on each of the drive wheels that contacts the exterior surface of the drive tires.

Abstract: A chemical/biological wastewater treatment plant method and apparatus employing rapid sludge chemical dewatering technology in conjunction with an environmental biological system for treating the separated treated wastewater by land applying it for plant consumption, and/or passing it through aqueous plant or microbial reduction of the dissolved solids and ammonia for BOD compliance to produce water of sufficient quality to meet open stream and ocean effluent discharge requirements; and disposing of the high BTU low moisture solids.

Abstract: An apparatus for treating sludge, comprises a press for dewatering the sludge, a compaction device for receiving and compacting sludge dewatered by the press, a shredder for receiving and shredding sludge compacted by the compaction device, and a tube conveyor for conveying shredded sludge from the shredder. The press is controlled to vary the flow rate of the sludge in response to at least one sensed operational parameter of the press, such as the momentary power for operating the press, pressure in the sludge in the press, sludge concentration in the press, sludge feed flow to the press or separated water flow from the press.

Abstract: Various embodiments of the present invention are directed to waste disposal methods and systems. In one embodiment of the present invention, a waste disposal system is positioned under a sink in a building connected to a septic system for disposal of food waste and wastewater. The waste disposal system includes a grinding chamber, a centrifugal-pump chamber, and a straining chamber for separating food waste from wastewater. The straining chamber includes a filtration basket, and an outlet pipe.

Abstract: This invention relates to a pipette tip or tube designed to perform biological or chemical sample preparation, purification or separation. The narrow end of the pipette tip is twisted in such a way that it forms a narrow spiral passage, which allows the retention of the chromatographic material in the pipette tip. The narrow spiral formed by twisting the capillary or the tube creates an opening that is large enough to permit the passage of fluids or smaller particles, but small enough to block the passage of solid materials or larger particles, The device described herein can be used for sample separation or purification using a vacuum, pressure, centrifugation, gravitation or other separation methods.

Abstract: A dishwasher with a multi-step filter system includes a coarse filter and a micro filter for cleaning the rinsing solution and also includes a lye pump and a circulatory pump. The dishwasher also includes a comminutor arranged in the path of the flow downstream from the coarse filter for remains contained in the rinsing solution.

Abstract: An apparatus for treating sludge, comprises a press for dewatering the sludge, a compaction device for receiving and compacting sludge dewatered by the press, a shredder for receiving and shredding sludge compacted by the compaction device, and a tube conveyor for conveying shredded sludge from the shredder. The press is controlled to vary the flow rate of the sludge in response to at least one sensed operational parameter of the press, such as the momentary power for operating the press, pressure in the sludge in the press, sludge concentration in the press, sludge feed flow to the press or separated water flow from the press.

Abstract: The present invention provides a modular ethanol production plant constructed of a number of identically sized modules each having a supporting structure main framework to which the components contained in the modules are attached. The plurality of modules includes a fermentation module, a distillation module, a ground grain module, and an optional heating module. Each of the modules are sized to occupy the same approximate space as a standard sized ocean going shipping container.

Abstract: A sanitation system comprising of a first tank for receiving waste water fluid typically comprising solids, a maceration pump for pulling waste water fluid from the first tank, a cross flow filter comprising of media for receiving the sheared fluid forming unfiltered waste water and product water, a second tank for receiving the product water from a product water manifold connected to the second segment, a vented loop in communication with the second tank for receiving raw water and displacing product water from the second tank, a macerating water jet adapted to pull product water into the vented loop and on demand further macerate the product water, then into a third tank for receiving water from the vented loop and raw water for de-chlorinating the product water, and a control panel comprising a microprocessor to optimize the operation of the sanitation system.

Abstract: An oil collecting apparatus (1) and a method for collecting oil or the like comprises a frame (5) designed to form a restricted space with the surface of water or ice (VL), and a discharge opening (8) for discharging water and oil from side restricted space. For efficient recovery of oil, the apparatus comprises elements (7,10) for lowering the air pressure in the restricted space, such that the water level rises higher inside the frame (5) than outside it, and a disintegrator (10) arranged rotatably in the frame (5), the rotational movement of the disintegrator emulsifying the oil mixed with the water and breaking possible pieces of ice (13) in the restricted space, such that the water-oil mixture can be removed from the restricted space via the discharge opening (8).

Abstract: The invention relates to a device to be used in connection with thickening and clarifying apparatuses for shear-thinning of solids containing material, such as slurry, which device contains one conduit for feeding material to be shear-thinnned and another conduit for discharging back the shear-thinned material between a thickening apparatus and the shear-thinning apparatus. The conduit (3,23) for feeding material to be shear-thinned and another conduit (4,24) for discharging back the shear-thinned material are positioned essentially concentrically to each other at least in the ends connected to the thickening apparatus (2,22).

Abstract: The invention relates to a coarse dirt collector (7) for removing coarse material from a pulper (1). The coarse dirt collector (7) comprises a support arm (8) with a collecting basket (9). The collecting basket (9) consists of a frame (11) on which tines (Z) are fixed by means of a grid. The coarse dirt collector can be pivoted into and out of the pulper, to which end it moves about an axis of rotation (A) positioned at an angle to the plane that is perpendicular to the longitudinal axis (P) of the pulper. Said angle is between 20° and 40°. The advantage of said device is that the coarse dirt collector (7) has to carry out only one movement between its collecting and unloading position and unloading can take place automatically without need for a special scraping device. Because of the position of the tines (Z) there is no risk of undesirable loss of coarse material prior to unloading.

Abstract: Enhanced wastewater treatment utilizing directed energy to promote degradation of sludge is disclosed. The directed energy is delivered in a stream circulating to and from an anaerobic digester. The directed energy incorporates mechanical shear energy, ultrasonic energy, and/or hydraulic shear energy. Characterization of odor potential is further disclosed involving the analyzing volatilized sulfur-containing species from dewatered sludge. The odor potential can be used to control operation of the wastewater treatment by controlling the directed energy and/or polymer dose.

Abstract: The present invention relates to a method for the aerobic digestion of a fluid waste material, notably an aqueous sewage, in which at least part of the waste material and/or of the digestion mixture is comminuted to reduce the median particle size of biomass and other solid particles in the digestion mixture to less than 10 micrometres, for example using destructive cavitation with a pressure drop of from 2 to 7.5 Bar. The comminution produces particles which are preferentially ingested by predator organisms in the digestion stage so that they graze on the bacteria and biomass particles and thus reduce the amount of biomass and suspended solids produced in the digestion stage. The invention also relates to apparatus for use in the method of the invention.

Abstract: The present invention provides improved systems and processes for performing sequential batch anaerobic composting (SEBAC) on high solids content wastes. In particular, the present invention provides improved flooded SEBAC systems that function more efficiently (i.e., higher conversion kinetics) at lower temperatures than conventional SEBAC systems. Further, the improved flooded SEBAC systems and processes of the subject invention enable efficient anaerobic digestion operation at a smaller reactor volume ratio as compared to conventional SEBAC systems, without the displacement of leachate and clogging as a result of entrapped biogas or an increased pressure drop (hydraulic). Further, the improved flooded SEBAC systems of the invention overcome concerns associated with leachate displacement as well as excessive pressure drops.

Abstract: A system for processing sewage into vermicompost includes a holding tank for receiving and initially processing the sewage. A treatment tank, connected to the holding tank by a first pipe, is used for treating the initially processed sewage from the holding tank to ensure optimal pH, percent of solids, and electrical conductivity of the sewage. A distribution tank, connected to the treatment tank by a second pipe, is used for heating or cooling the sewage from the treatment tank as necessary. A distribution apparatus, connected to the distribution tank by a third pipe, distributes the sewage to a vermicular environment, wherein the vermicular environment contains a plurality of worms which digest the distributed treated sewage into vermicompost.

Abstract: Disclosed is an on-site treatment method of food waste generated from multi-unit dwellings and institutional food service facilities, by transporting wastewater-containing food waste to a separation chamber by use of domestic wastewater or an additional transporter; separating the transported food waste to wastewater and food waste; and treating the separated wastewater in a sewage disposal plant, and the separated food waste using disposal equipment. Such food waste can be treated even using disposal equipment of small capacities, due to separation of wastewater and food waste, compared to disposal equipment of large capacities required for treating wastewater and food waste together. Also, the quality of the separated wastewater is better than the conventional quality of wastewater, and thus loads of the sewage disposal plant can be efficiently decreased.

Abstract: A floating pond skimmer is coupled by a fluid conduit to a remote filter/aerating apparatus. The skimmer sucks a mixture of solids and water, grinds/chops the solids, and pumps the reduced solids and water through the conduit to the filter/aerating apparatus which separates the solids from the mixture and aerates the water from the mixture. The floating skimmer preferably includes a vortex chamber, an on-board pump with a grinding impeller, an adjustable ballast, and an anchor. The filter/aerating apparatus includes an inclined screen and a drain tray beneath the inclined screen coupled to a water discharge conduit. Optionally, an aeration pump is coupled to the discharge conduit. Also optionally, a removable solid waste hopper is located at the lower end of the inclined screen. Otherwise the solid waste simply falls into a compost pile at the bottom of the inclined screen.

Abstract: A method and device are provided for treating a waste water waste-product mixture from a toilet by coupling the toilet to a waste product mixture to a waste product holding tank, connecting the tank with a vacuum container having a stirring member for breaking up the waste product and a heating system for drying the waste product to an ash, introducing water from a water holding tank that communicates with the toilet to the ash to form a gel, separating the water from the gel, returning the water to the water holding tank, and discharging the gel residue.

Abstract: A method and apparatus for remediating wastewater holding areas and the like includes a closed, foraminous dewatering membrane that is positioned adjacent to the wastewater holding area. Sludge and adjacent water on the bottom of the wastewater holding area are pumped in the form of a sludge slurry into the interior of the dewatering membrane. The water is removed from the sludge slurry by allowing gravitational forces to flow water through the dewatering membrane. The dewatering membrane is then opened, and the dewatered sludge is removed for depositing at an appropriate site.

Abstract: A system and method for pre-treating grease and other similar wastes prior to introducing them into a waste water treatment facility so that the grease, etc., does not clog the waste water treatment facility equipment. The system includes a tank for receipt of the grease that has an inlet pipe equipped with water jets and emulsifying blades that emulsify and dilute the grease in hot water as it enters the tank. The dilute waste then can be drawn through a drain pipe by opening a valve to allow it to enter the waste water processing equipment.

Abstract: A method for treating particulate biodegradable organic waste includes sizing the waste and adding a base prior to introducing the waste to a thermal hydrolysis reactor and hydrolyzing the waste at a temperature of about 130° C. or greater and a pressure greater than the saturated water vapor pressure to produce a slurry including solubilized organic material and residual solids. The solubilized organic material is separated from the residual solids using a liquid/solid separator and the solubilized organics are subjected to anaerobic digestion to produce a methane gas. The base is preferably potassium hydroxide (KOH) at a concentration of about 1%. The method may further include preheating the particulate biodegradable organic waste with latent heat of the separated solubilized organic material prior to thermal hydrolysis.

Abstract: The present invention relates to the treatment and disposal of waste, including sanitary, petroleum, and other organic wastes. More specifically, the present invention treats and disposes of these types of waste from portable and remote waste generating sources, such as passenger carrying vehicles and remote facilities where sewage and septic systems are impractical. The invention makes use of thermal energy liberated from devices that generate a hot exhaust stream, such as internal combustion engines. The invention generally involves the passing of a waste material from a tank through a homogenizing device. The homogenizing device reduces the particle size and thoroughly mixes the waste stream so that it maybe injected into a hot exhaust stream, which converts the waste stream into water vapor, gas and inert ash.

Abstract: A method and apparatus for the removal of suspended solids from water, waste water and other effluents is disclosed. The raw fluid being extracted is placed in a pressurized equalization chamber by a pumping apparatus. The fluid might be ground in advance to reduce the size of solid particles suspended therein to a manageable size. Solids can settle from the fluid before pumping into a second chamber for further setting. Chemicals are injected between the first and second chambers. The sludge recovered from from the base of the chambers can be sterilized using conventional methods, and the separated fluid discharged from the clarification chamber is further cleaned, also using conventional methods. The method and apparatus of the present replaces or supplements conventional mainframe biological treatments.

Abstract: A solder dross removal apparatus includes a holder adapted to be pivotably mounted to a container within which a pool of molten solder is kept at preset temperature. Dross is introduced into the container. A dross cutter assembly includes shafts rotatably supported by the holder and flat elongated cutter elements mounted on the shafts. The cutter elements are disposed perpendicular to the surface of the molten solder and partly submerged in the molten solder when the container is closed by the holder. The cutter elements are angularly offset from each other so that each end of the cutter elements lies on a spiral path. The cutter elements are rotated to repeatedly cut the dross into smaller pieces and force the dross as cut into the molten solder. This process removes oxides from the dross, and any free, reclaimed solder is returned to the molten solder.

Abstract: A waste treatment apparatus for the treatment and processing of wet material is provided. The apparatus comprises an inlet hopper adapted for receipt of the wet material. A pre-conditioning unit is provided having an input and an output end wherein the wet material is received from the inlet hopper at the input end and is conveyed to the output end wherein the wet material is processed to reduce moisture and pathogen content. A blower is provided for providing a forced air stream to direct the flow of the wet material and for directing the flow from the output end of the pre-conditioning unit. A pre-separation cyclone is provided and is operatively positioned for receiving the wet material from the output end of the pre-conditioning unit via the air stream powered by the blower, wherein the wet material is processed under the influence of cyclonic forces that further reduce the moisture content, pathogen content, and reduce the particle size of the wet material.

Abstract: Wastewater can be treated using a combination of a settleable solids separator, such as a vortex separator, and a gas floatation separation system.

Abstract: A process for destroying pathogens in sludges/biosolids using rotor-stator technology to produce cavitation for pathogen destruction, combined with the feeding of lime or other alkaline material to induce heat and ammonia gas release. The combination of the rotor-stator with the lime produces higher temperatures than the addition of lime alone with a very high mixing efficiency giving maximum pH shift and ammonia release to all portions of the matrix. Overall, the process destroys the resistant stages of helminths or protozoan pathogens through a combination of cavitation with the increased heat caused by the rotor-stator/lime process, along with the locally released ammonia induced by the pH shift.

Abstract: A garbage treatment apparatus of the type which includes a cylindrical container formed to store an amount of porous inorganic balls containing microorganism effective for decomposition of garbage and to store an amount of garbage to be treated, a rotation shaft vertically mounted for rotary movement in a central portion of the container, a driving mechanism mounted on the container for driving the rotation shaft, a screw propeller assembly mounted to a lower portion of the rotation shaft for rotation therewith to feed downward the inorganic balls and garbage stored in the container, a flow adjustment plate in the form of a truncated conical plate mounted within a bottom portion of the container concentrically with the rotation shaft and placed in an upwardly expanded condition, and a rotary disk horizontally mounted to a lower end of the rotation shaft for rotation therewith and placed under the propeller assembly, the rotary disk being coupled with the flow adjustment plate to close a lower end opening of t

Abstract: A wastewater treatment process that provides improved reduction of total solids through endogenous respiration while reducing biochemical oxygen demand and utilizing biological nutrient reduction. The wastewater treatment process uses an efficient aeration delivery system to drastically reduce the time needed to oxidize organic matter, and recirculates, shreds and homogenizes the organic matter and microorganisms and oxygenates the entire mass many more times than traditional systems resulting in a greater biological solids digestion rate.

Abstract: A self-sustaining non-biodegradable waste breakdown system has a preprocessing assembly, a heating assembly, a reaction assembly and a filtering assembly. The reaction assembly has a filtering layer to retain long chain molecules of the melted waste for continuous breakdown so as to change the long chain molecules into short chain molecules. The filtering-adjusting mechanism of the filtering assembly recycles the medium with a special concentration, viscosity and heat resistance in the reaction chamber.

Abstract: A food disposal system for installation on a drain of a commercial kitchen sink enables segregation of oil/grease from effluent flows from the drain. A housing collects effluent flows containing water, oil/grease, and solids from the drain, and a macerating pump has an inlet connected to an opening of the housing and an outlet connected to a sanitary drain. A greasy water outlet extends to an oil/grease separator from an outlet on the housing above the macerating pump inlet, and a hot water backflush source enables hot water to flow into the housing.

Abstract: A process and apparatus for the treatment of septage, particularly grease trap waste, is disclosed. The inventive process will convert the septage into Biosolids (sludge) and water dischargeable to the environment. The treated septage achieves pathogen reduction, and reduced vector attraction. Treatment of septage by pasteurization causes the destruction of harmful pathogens. Pasteurization of septage having high water content provides for even temperature elevation and distribution of heat within the thermal mass of the septage allowing for consistent pathogen destruction. An alkaline compound is utilized to form a filter cake from the solids fraction of the pasteurized septage preventing vector attraction, while producing a beneficial bio-solid. The liquid fraction of the septage is treated by biological process allowing for its discharge into the environment.

Abstract: A solder dross removal apparatus includes a holder adapted to be pivotably mounted to a container within which a pool of molten solder is kept at preset temperature. Dross is introduced into the container. A dross cutter assembly includes shafts rotatably supported by the holder and flat elongated cutter elements mounted on the shafts. The cutter elements are disposed perpendicular to the surface of the molten solder and partly submerged in the molten solder when the container is closed by the holder. The cutter elements are angularly offset from each other so that each end of the cutter elements lies on a spiral path. The cutter elements are rotated to repeatedly cut the dross into smaller pieces and force the dross as cut into the molten solder. This process removes oxides from the dross, and any free, reclaimed solder is returned to the molten solder.

Abstract: A green garbage treatment apparatus which comprises a disposer, a flow rate adjustment tank for temporarily storing a mixture of a green kitchen garbage ground by the disposer and a kitchen waste water, a solid-liquid separation device for separating the mixture into a solid component and a liquid component, a composting device for composting the solid component, a precipitation-separation device for allowing fine particles in the liquid component to precipitate, a waste water treatment device for subjecting the liquid component fed from the precipitation-separation device via a dividing device to a biological treatment to thereby obtain a treated water, and an insect removal device for removing deleterious insects such as a fly which are generated, for example, in the waste water treatment device. The apparatus is advantageous, in particular, in that it can remove insects such as a fly which are generated in the waste water treatment device.

Abstract: In a liquid treating process according to the present invention, colloidal particles in stable hydrated states or in meta-stable hydrophobic colloidal states in a liquid are rendered hydrophobic and separated from liquid molecules by an electric field formed by a microwave. The separated colloidal particles are allowed to collide against one another to become flocculated under a cavitation effect by a ultrasonic wave having a frequency in a low frequency range, and the liquid is deodorized by an electromagnetic ultrasonic wave having a frequency in a high frequency range. Therefore, it is possible to easily and reliably remove the colloidal particles dissolved in the liquid and to deodorize the liquid without need for a large-scaled equipment.

Abstract: An improved method and apparatus for aeration of septic tanks and the like. Because of the interrelationship of the rotating impeller, an air plate and the horsepower of the unit in comparison with the volumetric size of the sludge tank, the unit disperses extremely small reduced pressure microbubbles adjacent the area of the impeller. These reduced pressure microbubbles are thereafter dispersed throughout the wastewater by Brownian movement without agitating the sludge. As a result, there is substantially increased lateral oxygen transfer to replace the oxygen used by the aerobic bacteria. The sludge is therefore efficiently digested without the need for huge, expensive and energy inefficient equipment.

Abstract: The present invention relates to a method for purifying contaminated water coming from a carwash and an installation for performing this method. The method comprises the steps of pretreating the contaminated water such that the size of the organic material it contains is smaller than a predetermined cut off value; subsequently carrying the contaminated water in upward direction through a packed bed of particulate material, in which micro-organisms produce exo-enzymes to degrade the organic material in the contaminated water, which bed is aerated from below, and draining the purified water from the packed bed at a level located a determined distance from the top of the bed; wherein an additive is added to the contaminated water to stimulate production of exo-enzymes by the micro-organisms in the packed bed.

Abstract: A garbage treatment apparatus of the type which includes a cylindrical container formed to store an amount of porous inorganic balls containing microorganism effective for decomposition of garbage and to store an amount of garbage to be treated, a rotation shaft vertically mounted for rotary movement in a central portion of the container, a driving mechanism mounted oh the container for diving the rotation shaft, a screw propeller assembly mounted to a lower portion of the rotation shaft for rotation therewith to feed downward the inorganic balls and garbage stored in the contained a flow adjustment, plate in the form of a truncated conical plate mounted within a bottom portion of the container concentrically with the rotation shaft and placed in an upwardly expanded condition, and a rotary disk horizontally mounted to a lower end of the rotation shaft for rotation therewith and placed under the propeller assembly, the rotary disk being coupled with the flow adjustment plate to close a lower end opening of th

Abstract: A food waste disposal system having a separator for separating food waste solids from liquids. The separator includes a housing having a screw conveyor surrounded by a screen. The solids are introduced into the screen and conveyed by the screw conveyor toward the opposite end. The solids are compacted by the conveyor against a spring loaded member that adjustably blocks passage of the waste to an exit chute.

Abstract: A bag splitting apparatus for use in splitting open bags containing solid waste having a rotatable flail structure with a plurality of flexible flails attached to a rotatable mounting, the flails being formed from a material having a Young's modulus of less than 50 GN/m2; and a waste feed guide structure capable of receiving bagged solid waste and directing it towards the rotatable flail structure when the apparatus is in use.

Abstract: A coolant supply and recycle system and method for cleaning used machine tool coolant and returning it to the machine tools for reuse. A tank receives used coolant containing metal chips from one or more machine tools. A pump is in communication with the tank, and is operative to extract used coolant from the tank into an inlet portion of the pump. Within the inlet, the pump includes an inducer-chopper operative to prime the pump and to chop the metal chips to effect a reduction in their size prior to discharging the used coolant from the pump. An impeller is recessed in the pump above the inducer-chopper to create a vortex of the used coolant and sized-reduced metal chips and force them from the pump discharge. The pump discharge portion is connected to a filter for removing the metal chips and supplying the clean coolant back to the machine tools.

Abstract: Wastewater can be treated using a combination of a settleable solids separator, such as a vortex separator and a membrane separation system. Removal and segregation of materials that adversely affect operation of the membrane separator earlier in the treatment process can improve water throughput, water quality and the lifespan of system components. Physical separation of settleable solids and floatable materials from the wastewater prior to treatment with a membrane separator can allow higher flow rates to be achieved.

Abstract: A waste and wastewater treatment and recycling system separates blackwater and greywater at their respective sources and includes a waste separation system for decomposing the blackwater into water vapor and carbon dioxide gas, a wastewater treatment system for circulating, aerating, and separating the greywater into precipitated solid matter and treated water, and a filtration, disinfection, and water recycling system for filtering and disinfecting the treated water to form recyclable water. The precipitated solid matter is transferred to the waste separation system and the recyclable water is passed through a membrane filtration system to form potable water. A monitoring system monitors and controls operation of the waste separation system, the wastewater treatment system, and the filtration, disinfection, and water recycling system.

Abstract: A system for treatment of collected waste comprises a waste receiving pit; at least one first separator for separating between first waste material having a specific gravity equal or less than that of water and second waste material having a specific gravity above that of water; at least one crusher for receiving said first waste material, substantially crushing at least a particulate portion thereof to a smaller particulate form to obtain treated waste material and producing a liquid product comprising water carrying the treated waste material; at least one acetogenic fermentor for receiving said liquid product and for anaerobic acetogenic fermentation thereof to produce a first fermented effluent; at least one methanogenic fermentor for receiving said first fermented effluent and for anaerobic methanogenic fermentation thereof to produce a second fermented effluent; at least one liquid feed line for feeding at least one of said first or said second effluent into one or more of the system's devices for

Abstract: The invention relates to a method for treating biogenic residues, especially cafeteria leftovers, meat refuse, clarification sludge, organic industrial wastes and the like, wherein the residues are subjected to temperature pressure hydrolysis. In order to obtain a higher flow rate for residues using a small apparatus, the invention provides that temperature pressure hydrolysis is carried out in a cylindrical section in a first direction and in an external radial section in a second direction, the second direction being opposite to the first direction.

Abstract: Method for purifying waste water, whereby the waste water is subjected to a biological treatment producing sludge, part of this sludge being recycled towards the biological treatment while being subjected to ozonation combined with mechanical stirring. A mechanical stirring energy is brought in to attack the walls of the microorganisms.

Abstract: A raw sewage treatment system for treating grease trap raw sewage waste. The raw sewage is transferred via closed piping into an emulsifier/grinder pump into a first heating chamber where the fats in the waste melt. Here the heavier solids are allowed to settle out, and are removed by a conveyor. The waste then travels to a second heating chamber, where pathogens are killed at a higher temperature than found in the first heating chamber. The waste is de-emulsified in the second heating chamber, and the fats are pumped off the top. The remaining liquid passes through a shaker screen and a two-phase centrifuge to remove additional solids. The liquid then is treated in a biological reactor to reduce the volatile organics. The water is then discharged either to the environment or into a wastewater sewer.

Abstract: A system is described for improving separation of sewage containing wastewater, oleaginous materials and solids. The system includes a tank 10 having a first chamber 12 and a second chamber 14. In the first chamber oleaginous materials rise to an upper portion thereof and a grinder pump 30 grinds the solids that descend toward the bottom of the first chamber. The second chamber in communication with the first chamber delivers the sewage to a discharge line 24 in communication with a transport line that leads to a downstream sewage treatment plant. A conduit 32 conducts the slurry of the ground solids from the first chamber to the discharge line. A pressure relief line 40 running from the conduit releases the head pressure into the first chamber. The pressure relief line is connected to the conduit downstream of the conduit's highest point of elevation.

Abstract: In an apparatus 10, a space is formed by a pair of impermeable supports 16 and a pair of spacer members 12 for providing a predetermined distance between the impermeable supports 16. A permeable membrane is provided within the space and outlets 15 are provided on each of the pair of impermeable members 16. A stirrer 20 is provided within the space where the permeating object is present, and comprises a stirring axis 22, a driving source for oscillating the stirring axis 22, and a plurality of stirring blades 24 mounted on the stirring axis 22. Cut sections 26 are provided at a portion of each of the stirring blades 24 so that the permeating object can be circulated at the space between the stirring blade 24 and the inner wall of the spacer member 12 or at the space between the stirring blade 24 and the permeable membrane 14. The cut sections are alternately provided at the right and left sides of the layered stirring blades.