A system, method and device are disclosed for bio-processing a feed stream and providing a constant output by operating a continuous single-pass tangential-flow process. The single-pass process provides high conversion concentration while operating at relatively low feed flow rates, and the process can also be used to provide constant output diafiltration.

A membrane filtration system with reverse osmosis (RO) or nanofiltration (NF) elements is adapted to provide high recovery from difficult wastewater. The system has a plurality of stages. The system is configured to provide concentrate staging. The last stage also has concentrate recirculation. The valves and pumps of the system are arranged such that the order of flow and a recirculation pump may be switched between the first stage and the last stage at some times.

A membrane filtration system with reverse osmosis (RO) or nanofiltration (NF) elements is adapted to provide high recovery from difficult wastewater. The system has a plurality of stages. The system is configured to provide concentrate staging. The last stage also has concentrate recirculation. The valves and pumps of the system are arranged such that the order of flow and a recirculation pump may be switched between the first stage and the last stage at some times.

The invention relates to a method and apparatus for treatment of produced or process water from hydrocarbon production to reduce the volume of the produced or process water while simultaneously reducing the salinity of a highly saline stream, for example, the brine from a seawater desalination plant. The method includes causing a feed stream comprising produced or process water to flow through the lumen of a hollow fiber osmotic membrane 4 which is immersed in an open channel 2 or tank of flowing draw solution 6 which has high salinity. In this way, water from the feed stream is drawn through the osmotic membrane 4 by an osmotic pressure differential caused by the difference in salinity between the feed stream and the draw solution 6.

A method for reducing beverage loss during loading of beverage into an ethanol concentration system having a set of reverse osmosis pressure vessels, each pressure vessel having a feed inlet, a retentate outlet, and a permeate outlet. The method includes feeding deaerated water into the feed inlet of a first pressure vessel, feeding the beverage into the feed inlet of the first pressure vessel, monitoring an alcohol percentage at the retentate outlet of a second pressure vessel, the second pressure vessel coupled directly or indirectly to the first pressure vessel, and coupling a retentate from the retentate outlet of the second pressure vessel to a feed tank coupled to the feed inlet of the first pressure vessel when the alcohol percentage is within a first target range of 0.5 to 18% alcohol-by-volume (ABV).

A method for preparing a filtered beverage includes filtering a raw beverage using a cross-flow ultrafiltration device to produce a solids fraction and a liquid fraction; heating the solids fraction to a temperature of 60° C. or greater to produce a pasteurized solids fraction; microfiltering the liquid fraction through a microfilter having a size cut-off of 1 μm or smaller to produce a microfiltered liquid fraction; and combining the pasteurized solids fraction and the microfiltered liquid fraction to result in the filtered beverage.

The present disclosure pertains to filtration methods comprising: passing a first fluid that comprises cells, cell debris and targeted product produced by the cells through a first filter thereby separating the first fluid into a first retentate comprising cells and a first permeate comprising targeted product and cell debris; combining resin beads having affinity for targeted product with the first permeate to form a second fluid containing resin beads with bound target product and cell debris; passing the second fluid through a second filter thereby separating the second fluid into a second retentate comprising resin beads with bound target product and a second permeate comprising cell debris; combining an elution buffer with the second retentate to form a third fluid that comprises a mixture of resin beads and unbound targeted product; and passing the third fluid through a third filter thereby separating resin beads from targeted product.

A system and method for producing very high concentration brine streams from which commercially efficiently obtained minerals may be obtained is produced by a dual membrane brine concentrator system (DTRI Concentrator). The system includes a nano-filtration system which removes divalent ions from the seawater, a brine concentrator such as a hollow fine fiber forward osmosis system which receives and further concentrates the brine rejected from the nano-filtration system, a SWRO system which receives the NF system permeate and removes monovalent ions, and another brine concentrator which further concentrates the brine rejected from SWRO system. Various permeate and reject brine flow may be forwarded through the Dual Membrane Brine Concentrator system, and multiple stages of the system components may be used, to enhance brine concentration and improve system efficiency.

What is disclosed is a mass selective fluid bandpass filter. This filter provides for selecting gas molecules of a specific mass from a gas sample containing molecules of two or more mass species. This filter provides a means of operation of a selecting a predetermined gas from a group of gases or an atmosphere. The mass selective fluid bandpass filter consists of quartz glass, of either natural or manmade origin. This provides method of removing a predetermined gas from the group consisting of: .sup.1H.sub.2, .sup.1H.sup.2H, .sup.2H.sub.2, .sup.1H.sup.3H, .sup.2H.sup.3H, .sup.3H.sub.2, .sup.1H.sub.2O, .sup.1H.sup.2HO, .sup.2H.sub.2O, .sup.1H.sup.3HO, .sup.2H.sup.3HO, .sup.3H.sub.2O, .sup.3He, .sup.4He, O.sub.2, O.sub.3, .sup.12CO.sub.2, .sup.13CO.sub.2, .sup.14CO.sub.2, CO, N.sub.2, NO, NO.sub.2, NO.sub.x, SiO.sub.2, FeO, Fe.sub.2O.sub.3, SiF.sub.4, HF, NH.sub.3, SO.sub.2, SO.sub.3, H.sub.2SO.sub.4, H.sub.2S, .sup.35Cl.sub.2, .sup.37Cl.sub.2, F.sub.2, Al.sub.2O.sub.3, CaO, MnO, P.sub.2O.sub.5, phenols, volatile organic compounds, and peroxyacyl nitrates.

A turbocharger includes a turbocharger housing having an impeller housing comprising a circular cross-section. A main nozzle is disposed within the turbocharger housing communicating a first portion of a fluid stream to a first volute. A first auxiliary channel and a first auxiliary nozzle communicating a second portion of the fluid stream to the first volute. The first auxiliary nozzle is downstream of the main nozzle. A second auxiliary channel and a second auxiliary nozzle communicate a third portion of the fluid stream to the first volute. The second auxiliary nozzle is downstream of the first auxiliary nozzle. A valve assembly is selectively coupling the first auxiliary channel to the first auxiliary nozzle and the second auxiliary channel to the second auxiliary nozzle.