Abstract: The present invention is a system and method for treating a wastewater stream to produce an effluent having an acceptable level of turbidity. The invention comprises a controller operatively coupled to at least one turbidity meter for monitoring turbidity of the effluent stream. A plurality of chemical treatment additive pumps are provided for providing a plurality of additives to the wastewater stream. Furthermore, a method of sequentially testing the amount of each additive required to produce an effluent stream having an acceptable turbidity is disclosed.

Abstract: The present invention relates generally to an environmentally sensitive mobile cleaning system, and more specifically relates to a closed loop water recirculation system for high or ultra-high pressure mobile cleaning apparatus. The system includes a water tank sized to contain an established volume of fluid sufficient to circulate through the system, a pump to pressure the fluid to a cleaning head, a vacuum system to return the contaminated fluid to the system, and a filter means to remove the contaminants from the fluid so that clean fluid can be reintroduced to the cleaning head. The method comprises the steps of increasing the pressure of a fixed volume of fluid in a closed-loop system, jetting or blasting the surface with the pressurized fluid, vacuuming the blasted fluid into the system, and removing the contaminants from the fluid.

Abstract: A method for multi-dimensional chromatography of a polyolefin polymer, comprising introducing a solution of the polyolefin polymer into a liquid flowing through a first liquid chromatography stationary phase or a field flow fractionation device and subsequently flowing the solution through a second liquid chromatography stationary phase, the second liquid chromatography stationary phase comprising graphitic carbon, the polyolefin polymer emerging from the liquid chromatography stationary phase with a retention factor greater than zero.

Abstract: A disposable cartridge for use in a hemodialysis machine has a blood flow path for carrying a volume of blood to be treated in a dialyser and a dialysate flow path, isolated from the blood flow path, for delivering a flow of dislysate solution through the dialyser. The cartridge is received in an engine section of the machine. The engine section has first and second platens which close when the cartridge is inserted to retain the cartridge. Actuators and sensors arranged on the second platen control operation of the cartridge.

Abstract: A method and system for metering liquid production at a well comprises an actuated back pressure control valve, a liquid pump, a liquid flow meter and a pressure sensor, both intermediate the liquid pump and the back pressure control valve, and a separator having a liquid discharge conduit, a pressure sensor and a liquid/gas interface sensor disposed to monitor a section of the separator. The liquid pump receives a stream of liquid removed from the monitored section of the separator and moves the liquid stream through the flow meter and the back pressure control valve. A controller receives signals from the pressure sensors and the interface sensor, and operates the liquid pump at a speed to maintain an interface in the monitored section within a predetermined range while positioning the back pressure control valve to maintain the pressure at the flow meter above a pressure at which bubbles may form.

Abstract: Systems and methods for separating charged molecules on the basis of their differential electrostatic binding to a charged stationary phase comprise controlling the creation of simultaneous independent or dependent pH and additive gradients.

Abstract: Systems, apparatus and methods are described that control and manage water collection and treatment. One or more sensors monitor and measure levels of contaminants, other chemicals and or environmental conditions in a well of a tank, well and/or collection station and/or in inflow and/or outflow mains. An additive that can include one or more of ozone, oxygen, a bioagent, bleach, peroxide and other chemicals, and selected to treat chemicals and/or contaminants in water, can be mixed with water in the well and the main. An infusion assembly deployed within the tank is adapted to mix the water and additive into a body of water in the well. A processor configured to control the rate at which the additive is provided to the infusion assembly or force main based on measurements of contaminants received from the first and second sensors.

Abstract: The present invention relates to an apparatus for dialysis treatment which has device(s) for balancing fresh and used dialysis fluid. The present invention also relates to a method of balancing fresh and used dialysis fluid. The apparatus and method according to the present invention for balancing fresh and used dialysis fluid are characterized in that the individual balancing chambers of the balancing system receive both fresh dialysis fluid and used dialysis fluid, the functions of the balancing chambers being alternately interchanged. In this way, exact balancing can be achieved even when the volumes of the individual chambers differ from one another. Over the period of the treatment as a whole, the differences between the volumes balance each other out due to the cyclic interchange of the chambers.

Abstract: A spin column device, which contains a rigid porous filter that retains its shape during centrifugation, chromatography methods using the device to isolate a desired substance, e.g., a biological molecule, from other substances in a mixture, and kits containing the device with one or more reagents for use in the method.

Abstract: A method for controlling operation of a pump unit, where the pump unit includes a primary piston pump having a primary piston and a secondary piston pump having a secondary piston. The primary piston pump is fluidically connected with the secondary piston pump. The primary piston pump includes an inlet valve and an outlet valve, and the pump unit operates periodically according to a pump cycle. The method includes determining a fluid pressure of fluid dispensed by the pump unit, and performing a closed loop control of a position of the primary piston in dependence on the fluid pressure of the fluid dispensed by the pump unit during a first time interval of the pump cycle.

Abstract: A composition for treating waters, e.g. ballast water or injection water for oil recovery, to kill in-situ aquatic invasive species comprises at least one biocide capable of killing both animal and plant micro-organisms. The at least one biocide preferably comprises Brilliant Green, Gentian Violet, and/or erythrosine, and a wetting agent or detergent-like compound such as CTAB or CTAC. The invention also relates to a system for treating ballast water in situ comprising means for injecting a composition for treating ballast water; means for measuring the flow rate or amount of ballast water to be treated; means for controlling the dosing of the composition; and means for storing or receiving the composition. The invention also relates to a method of detecting viable aquatic organisms in ballast water in situ comprising detecting metabolism in viable micro-organisms in ballast water and, therefore, measuring the efficacy of any treatment.

Abstract: A process for water treatment, including a combination of methods from the group comprising coagulation, sedimentation, flocculation and ballast flocculation, which is further improved by the addition of a simplified sludge recirculation system. The recirculation system corresponding to this process allows higher sludge density as well as less significant water volume losses by making the sludge accumulating at the bottom of the sedimentation zone go through a hydro cyclone a certain number of times in repeated cycles thus augmenting the solid particles density of the extracted sludge. The system may also be controlled by a suspended solid analyser, a flow meter and/or a timer. The present invention also includes a method of producing specific fluid flow control behavior with this simplified sludge recirculation system, which furthermore improves the efficiency of the process.

Abstract: In a regenerative dialysis system, in a method for controlling a regenerative dialysis system, and in a controller for a regenerative dialysis system, an embodiment of the system comprises an input pump that pumps fresh dialysate fluid into a dialyzer at an input rate. An output pump pumps used dialysate fluid from the dialyzer at an output rate. An ultrafiltration rate of the system is related to the output rate relative to the input rate. A sorbent cartridge filters the used dialysate fluid to generate the fresh dialysate fluid. A controller controls the ultrafiltration rate of the system in response to a flow rate of the dialysate fluid through the sorbent cartridge.

Abstract: Disclosed are improved methods and apparatus for radiolabeling, particularly methods and apparatus for large scale in-line radiolabeling of products, such as proteins and antibodies.

Abstract: A method of treating water in order to minimize scaling and biomass buildup in water conduits or containers in which the treated water is used includes processing ambient air in a chamber including at least one ultraviolet light source to generate an output flow mixture of air and reactive oxygen species (ROS) gasses, controlling the at least one ultraviolet light source, a flow rate of the output flow mixture and an ROS gas ratio in the output flow mixture, mixing a water flow with the output flow mixture to realize a flow of water/ROS gas mixture and outputting the flow of water/ROS gas mixture as the treated water. Preferably, the processing includes generating reactive oxygen species (ROS) gasses in the output flow mixture including at least one of Super Oxide (O2?) Peroxide (—O2—), Hydroperoxide (HO2?), Hydroxyl Radicals (OH.), Ozone (O3?) and Molecular Oxygen (O2).

Abstract: The present invention is a system and method for treating a wastewater stream to produce an effluent having an acceptable level of turbidity. The invention comprises a controller operatively coupled to at least one turbidity meter for monitoring turbidity of the effluent stream. A plurality of chemical treatment additive pumps are provided for providing a plurality of additives to the wastewater stream. Furthermore, a method of sequentially testing the amount of each additive required to produce an effluent stream having an acceptable turbidity is disclosed.

Abstract: A field flow fractionator to separate particles contained within an injected sample aliquot is described. As required, said fractionator may be used to capture, for subsequent removal, specific predefined classes of such particles. Based upon the cross flow or asymmetric flow field flow fractionators, the fractionator disclosed contains means to vary the applied transverse flows at a plurality of locations along the length of its separating channel. A plurality of separated compartments, each lying below a distinct and corresponding membrane supporting permeable frit segment, are provided individual means to control the localized flow through the membrane section thereabove. A corresponding concentric compartment implementation achieves the same type of compartmentalized cross flow when integrated with a hollow fiber fractionator.

Abstract: A spin column device, which contains a rigid porous filter that retains its shape during centrifugation, chromatography methods using the device to isolate a desired substance, e.g., a biological molecule, from other substances in a mixture, and kits containing the device with one or more reagents for use in the method.

Abstract: A renal failure therapy system includes a blood pump; a citrate pump; and a control unit configured to automatically control the blood pump and the citrate pump to achieve a citrate flowrate that is based on at least a blood flowrate.

Abstract: A separation analyzer for transferring solutions, while changing mixing ratios of the solutions, wherein a flow passage from a first pump, a flow passage from a second pump, and a passage for sample introduction section, the flow passages being connected, which further comprises a flow switching means for temporarily storing the solutions, whereby the flow switching means alternatively makes a first state for pushing out the solutions in a second sampling loop to the sample introduction section by the second pump, while transferring the solutions to the first sampling loop; and a second state for pushing out the solutions in the first sampling loop by the second pump, while transferring the solutions from the first pump to the second sampling loop.

Abstract: Disclosed is a chemical administrator which delivers a chemical solution into a water supply line for a water-consuming device, e.g., a toilet in a recreational vehicle, for the purpose of treating waste-water before it is disposed in a holding tank. The apparatus has a container which holds the chemical solution. It also has a chemical administering system which siphons the chemical from the container into the water supply line using a vacuum created by the water moving through it.

Abstract: Disclosed herein is a disposable fluid path for processing complex materials. The disposable fluid path comprises a gravity assisted disposable system for separating a biological sample into two or more distinct submaterials through sedimentation. The fluid path is comprised of a sample delivery conduit and bag-set wherein the bag set comprising a tubing assembly, a separation assembly, and a filter assembly. Methods of using the system are also disclosed.

Abstract: A device for generating micro- and nanoflow mobile phase gradients for high performance liquid chromatography includes a generator of micro- and nanoflows of at least two mobile phases in different percentage compositions; an n-position gradient distributor having inlet and outlet ports and n couples of ports for a like number of capillary loops, each selectively connectable at one end with the inlet port and at its other end to the outlet port, which in turn is connectable to an analytical circuit that includes a chromatographic column and a detector; a micro- and nanoflow meter connected to the analytical circuit; a flow deviator having an inlet connected to the outlet of the gradient distributor, one outlet connected to a discharge and another outlet connected to the micro- and nanoflow meter, and a control unit that includes means of control of the generator of micro- and nanoflows such to create the different mobile phase mixture compositions, means for controlling the gradient distributor, means for con

Abstract: This liquid feeding system has the first and second pumps each of which is provided with a plunger. Liquid sucked through each of the pump suction ports is discharged out of the discharging port through the first pump and/or second pump. Under the starting operation mode, the second pump is stopped and only the first pump is operated. When the discharging pressure at the discharging port reaches up to a predetermined value, the starting operation mode is changed over to the normal operation mode. Under the normal operation mode, the first pump is stopped and only the second pump is operated.

Abstract: A transportable water treatment system includes: a lower cage housing a water purifying apparatus, a middle cage housing a first water storage tank, and an upper cage housing a second water storage tank. The transportable water treatment system has a footprint approximate to the area of the lower cage. A chlorinator may be used in the water purifying apparatus that includes a bowl having an inlet at the bottom and an outlet on its side. A channel is around the inlet forcing fluid to flow to the top of the channel and over its edges. A flow diverter is positioned above the inlet adapted to transfer the flow of fluid to a substantially horizontal direction. A platform is positioned within the channel being adapted to position a single chlorine tablet within the channel. The lid is adapted for holding a plurality of chlorine tablets above the platform.

Abstract: A flow-through mixing apparatus for incorporating a dry treatment product into a waste stream. The apparatus comprises a pump for directing a liquid waste from a storage pit/tank, a mixer that receives the liquid waste from the pump, and a valve downstream of the mixer for either recirculating the liquid waste back to the storage pit/tank via a recirculation conduit, or directing the liquid waste to a discharge conduit. The mixer comprising a jet nozzle, a venturi tube and a high-shear assembly. The recirculation conduit establishes a calibration loop for determining the appropriate treatment regimen based on the characteristics of the waste liquid. The recirculation conduit also permits the homogenization of the pit/tank contents prior to addition of the dry treatment product. The dry treatment product introduced in the region of the mixer is subjected high shear forces, thereby incorporating the dry treatment product into the waste stream with increased dispersion and reduced agglomeration.

Abstract: An automatic ozone water output device includes a faucet unit, at least one water inlet pipe, and an ozone generator. The faucet unit will automatically detect the presence of a user to output water. The water inlet pipe having a Venturi section connects the faucet unit and a water source. An ozone generating device having a pressure-sensitive activator is kept in a concealed space or a sheltered location, such as in the area under a basin or a sink. When water flows through the Venturi pipe, a negative pressure is developed and sensed by the pressure-sensitive activator. In response, the pressure-sensitive activator activates the ozone generator, thereby causing the mixing of ozone with the discharged water.

Abstract: An integrated fluid filtration and recirculation system and method are provided for re-circulating and filtering fluid that is used in well cleaning operations. The system is incorporated within an enclosure, which is transportable, such as on a vehicle trailer. The system has power generation capability, thereby making the system capable of operating as a stand-alone unit. Chemicals may be infused into the filtered fluid from an integral chemical supply allowing the system to also function as a treatment facility for the fluid. The components of the system are arranged in a linear fashion that enables the system to maintain a minimum profile for transport upon a conventional trailer, yet the system provides enough room within the enclosure to allow operators to repair/inspect each of the system components. The enclosure may be climate controlled, and the enclosure may include removable panels for operation of the system in temperate conditions when climate control is unnecessary.

Abstract: Various embodiments described herein provide methods and apparatus for releasing treated wastewater into the environment by combining the treated wastewater with a concentrated salty water before discharging the combined water into the environment. The treated wastewater and concentrated salty water may be combined in a ratio that will be less toxic to at least some resident marine life than the treated wastewater alone.

Abstract: The present invention provides a liquid delivery device for liquid chromatographs which, by performing liquid delivery at an accurate flow rate with limited pulsation, gives accurate results of analyses. The present invention, with a view to preventing erroneous operation due to errors in measurements at the time of judgment of completion of compression of liquid, establishes the judgment point before the pressure measured by a cylinder pressure detector agrees with the pressure measured by a discharge pressure detector and also calculates the point of completion of compression. Control in this manner prevents pressure fluctuation. It also calculates for control the point of completion of compression from the history of compression performed previously.

Abstract: A system for introducing a liquid disinfectant into treated wastewater comprising a source of liquid disinfectant, a sensor to detect flow or level of treated wastewater from a wastewater treatment system, a selectively operable valve to allow the liquid disinfectant to flow via gravity into the treated wastewater and a controller operatively connected to the sensor to open the valve in response to sensed, increased flow or level of the treated wastewater in a receiver for the wastewater above a sensed, predetermined point.

Abstract: The invention provides extraction columns for the purification of an analyte (e.g., a biological macromolecule, such as a peptide, protein or nucleic acid) from a sample solution, as well as methods for making and using such columns. The columns typically include a bed of extraction media positioned in the column between two frits. In some embodiments, the extraction columns employ modified pipette tips as column bodies. In some embodiments, the invention provides columns characterized by low backpressure.

Abstract: A differential rate rotary thickener; a power detector which is disposed in a sludge receiver tank for thickened sludge thickened in the differential rate rotary thickener; a discriminator which receives an electric signal for a thickened sludge concentration (X) detected by the power detector and which calculates and discriminate the data; a first controller which receives an instruction signal being a discriminated result in the discriminator and which operates an outer cylinder driving machine and a screw driving machine; a ratio setter which receives a discriminated signal of the discriminator and which increases or decreases a chemical feed rate (?) of flocculant stepwise; and a second controller which receives an instruction signal from the ratio setter and which operates a flocculant-feeding pump are provided. Thickening of sludge is performed by controlling the chemical feed rate (?), a rotational speed (S) of a screw, and a rotational speed (C) of an outer cylinder screen.

Abstract: A system for soil, groundwater, or surface water remediation, comprises a water supply including a first fluid stream in fluid communication with a first injection point, and a second fluid stream in fluid communication with a second injection point. A first surfactant pump can be adapted to inject a surfactant into the first fluid stream, and a second surfactant pump can be adapted to inject a surfactant into the second fluid stream. A first oxidant pump can be adapted to inject an oxidant into the first fluid stream, and a second oxidant pump can be adapted to inject an oxidant into the second fluid stream.

Abstract: A renal failure therapy system includes a blood pump; a citrate pump; and a control unit configured to automatically control the blood pump and the citrate pump to achieve a citrate flowrate that is based on a blood flowrate, so that the flowrates are synchronized.

Abstract: A method and device for the cleaning of spiral wound membranes. In the device two or more spiral wound membranes are included in series in pressure tubes. The membranes are cleaned by longitudinal rinsing with water, in which a well-dissolvable gas has been dissolved. In the device for the purification of an aqueous fluid with spiral wound membranes, the membranes can be longitudinal rinsed with water, in which a well-dissolvable gas has been dissolved. As gas that is well-dissolvable preferably CO2 gas or a mixture of gasses is used.

Abstract: An integrated unit operations for the treatment of a waste stream, such as spent caustic, is provided in a single vertical vessel having at least three separate zones: a mixing, a settling, and a mass transfer zone.

Abstract: A connecting device comprises a buffer chamber (2), a first connecting line (3) between a liquid source (4) and an inlet (5) of the buffer chamber, a second connecting line (9) between an outlet (10) of the buffer chamber and the medical treatment apparatus (11), two valves (7, 8) arranged in series on the first connecting line, a pump (12) on the second connecting line, two liquid level sensors (15, 16) operating in the buffer chamber, a vent valve (18) connected to the buffer chamber. The liquid source is a centralised distribution plant of dialysate, while the medical treatment apparatus is a dialysis apparatus. The invention prevents back-contamination of the centralised plant with disinfectant sourced from the dialysis apparatus.

Abstract: A specimen pretreating device which includes a micro scale or nano scale high-performance liquid chromatograph having a capillary column (2), a probe (1) integrally formed at the tip of the capillary column (2), and an additive feeding flow passage (16). The probe (1) is formed in a multi-tube structure in which a plurality of tubes are disposed on the same axis. The innermost tube is located at the tip of the capillary column (2), and one of the outer tubes is used as an additive supply tube converging an additive solution to an eluent solvent eluted from the capillary column (2) to form liquid drops including the eluent solvent and an additive, and the liquid drops are released from the tip of the probe (1). The specimen is not diffused since a detector is not present in the flow passage.

Abstract: Gradient performance with high pressure gradient solvent delivery system is optimized by approximation of infinite stroke volume of high pressure pumps by the addition of pulse dampening with backflow prevention to each high pressure pump. The backflow prevention adds sufficient minimum flow resistance, thereby enhancing the performance of the pulse dampening over a wider range of flow rates resulting in consistent gradient performance.

Abstract: A new approach is proposed that contemplates systems and methods to support an environmentally-friendly, “green” thermophilic anaerobic digestion system. The system includes a thermophilic anaerobic digester as well as various independent modular anaerobic units to generate bio-methane from certain organic energy sources, including but not limited to, among other things, green municipal waste, restaurant and organic waste and effluents from industries such as breweries, grocery stores, food processing plants, granaries, wineries, pulp and paper mills, ethanol and biodiesel plants, fat and animal rendering, agricultural field crops, organic sludge accumulation within lagoons and waterways, marine organic matter and animal manure.

Abstract: A medical fluid or dialysis system includes an auto-connection mechanism that connects connectors from the supply bags to dialysis cassette ports or cassette supply lines. The system provides for multiple, e.g., four, supply bags, which can be connected to a manifold of the auto-connection mechanism. Tip protecting caps that protect the supply line ends and cassette ports or cassette supply line ends are made to be compatible with the auto-connection mechanism. The auto-connection mechanism removes all the caps and connects the supply lines to the cassette. At least one roller occluder is provided that occludes the supply tubing prior to the tip protecting caps being removed. The roller occludes prevent medical dialysis fluid from spilling out of the supply lines between the time that the caps are removed and connection to the cassette is made.

Abstract: A gradient pump apparatus which is capable of continuously and precisely feeding, to a chromatograph, eluents at intervals of certain time and at a constant flow rate in units of nano-liter per minute while the composition of two or more eluent components is changed. The gradient pump apparatus includes a 10-port valve for switching an eluent mixing pipe, in which a feed pressure of eluents changes with time, to be connected to a first loop which is supplied with another eluent from an isocratic pump that should function to hold an eluent feed pressure constant, and which is connected to an analytic section, or to a second loop through which the eluents are drained. A controller computes a difference between a value of the pressure in the eluent mixing pipe and a value of the eluent feed pressure applied from the isocratic pump when the eluent mixing pipe is connected to the second loop.

Abstract: A separation analyzer for transferring solutions, while changing mixing ratios of the solutions, wherein a flow passage from a first pump, a flow passage from a second pump, and a passage for sample introduction section, the flow passages being connected, which further comprises a flow switching means for temporarily storing the solutions, whereby the flow switching means alternatively makes a first state for pushing out the solutions in a second sampling loop to the sample introduction section by the second pump, while transferring the solutions to the first sampling loop; and a second state for pushing out the solutions in the first sampling loop by the second pump, while transferring the solutions from the first pump to the second sampling loop.

Abstract: A microfluidic flow device includes at least one flow channel flowing into a branch point, to which at least two branched channels are connected, and at least one linking channel interconnecting the two branched channels. The linking channel flows into each branched channel at a short-circuit point which is preferably located at less than half of the length of each branched channel.

Abstract: A device for treating of ballast water with aqueous acrolein solution is characterized in that the ballast water is pumped through a water jet pump (Z) by means of a pressure rising pump (VP), and that the negative pressure zone of the water jet pump is hydraulically connected with a non-circular, closed reaction container through a control valve (SV) which reaction container contains an eccentrically arranged intensive stirring unit (T) as well as separate supply ports for acrolein acetal (AC), acid (HX) and hydrolysis water (W) provided at the outside thereof.

Abstract: A method of liquid chromatography includes providing one or more solvent reservoirs, providing a solvent pump, drawing one or more solvents into the pump in response to a pressure drop that promotes outgassing of the solvents, and dispersing outgassed bubbles into smaller bubbles to promote re-dissolution of the gas. A liquid-chromatography apparatus includes at least two solvent reservoirs, a pump, at least one bubble-dispersing unit that receives a pressurized flow of proportioned solvents from the pump, and a control unit. The control unit includes a processor and a memory that stores instructions; the control unit controls proportioning of solvents to obtain a preselected solvent composition, and pumping at flow rates to support preparative-scale or process-scale liquid chromatography.

Abstract: The present invention relates to a process and an apparatus for separating environmentally hazardous substances, such as heavy metals and oil, from a contaminated mass, such as sewage sludge or soil from industrial sites. According to the process, an aqueous metal hydroxide solution comprising Na, K or Ca is added to the contaminated material in form of high-pressure jets, in order to disintegrate the material and provide a homogeneous mixture. Thereafter, liquid containing the hazardous substances is separated from the washed material and subsequently filtrated. The essentially pure water resulting from the filtration step may be used for producing new metal hydroxide solution to be used in the process.

Abstract: The present invention relates to a water-filter device. This is distinguished by the provision of an adjusting medium (5) of which the volume and/or the structure change/changes by way of a liquid (6) which is in contact with the adjusting mechanism (1) and/or has flowed through the adjusting mechanism (1).

Abstract: A method and apparatus for monitoring and controlling nano-scale flow rate of fluid in the operating flow path of a HPLC system provide fluid flow without relying on complex calibration routines to compensate for solvent compositions gradients typically used in HPLC. The apparatus and method are used to correct the flow output of a typical, analytical-scale (0.1-5 mL/min) HPLC pump to enable accurate anti precise flow delivery at capillary (<0.1 mL/min) and nano-scale (<?L/min) HPLC flow rates.