An outlet (3) for fluid feed of a first membrane module (1a) is connected to a fluid inlet (2) of a second membrane module (1b), and if further membrane module(s) is/are present, the outlet (3) for fluid feed of a previous membrane module (n−1) is connected to the fluid inlet (2) of a following membrane module (n), and for the last membrane module (n), the outlet (3) for fluid feed is connected to the fluid inlet (2) for fluid feed of the first membrane module (1a). An amount of fluid feed is continuously pumped with pressure PB through a loop of n membrane modules that are serially connected, the fluid feed and permeate flow concurrently through each of the n membrane module(s), generated permeate is continuously drained from each membrane module through a permeate outlet, permeate pressure at the permeate outlet of each membrane module is controlled within a range.

The present disclosure relates to purification cassettes that have reinforcing features. One embodiment relates to a purification cassette with tensions members. A purification system may include a removable cassette defining a media cavity. A set of tension members may span between a first sidewall and second sidewall. The set of tension members can divide the media cavity into a plurality of lanes.

The present invention provides for a method for separating starch from processing solutions containing starch containing plants or roots such as potatoes, sweet potatoes, wheat, corn, tapioca, yams, cassaya, sago, rice, pea, broad bean, horse bean, sorghum, konjac, rye, buckwheat and barley to provide commercially acceptable starch while reducing disposal of solid or liquid waste matter into landfills or water treatment facilities.

A filtration system suitable for recovering base stock from used lubricating oil and other applications pass feedstock over nano-filtration membranes assembled as a stack of membranes all experiencing parallel flow. On exiting a first stack of membranes the feedstock passes through an opening in a pressure-sustaining separator plate to flow in the reverse direction past a second stack of membranes and subsequently establish a serpentine flow of feedstock through multiple stacks of membranes. The stacks of membranes all share a common pressure containment vessel. Pressure boosters installed in the flow-through openings of separator plates separating consecutive stacks can serve to restore lost pressure of the feedstock and maintain effective permeation of permeate through the membranes. A pressure control valve at the outlet to the permeate-receiving cavities of a stack can be used to adjust the trans-membrane pressure.

Provided is a reverse osmosis treatment apparatus which decreases operation power by utilizing a back pressure caused by regulating an amount of permeated water. The reverse osmosis treatment apparatus includes a first pressure vessel for a primary treatment of untreated water, and a second pressure vessel for a secondary treatment of the water treated by the primary treatment, wherein a reverse osmosis membrane element having a reverse osmosis membrane or the plurality of reverse osmosis membrane elements are arranged in series along a water collection pipe in the first pressure vessel and the second pressure vessel. The first pressure vessel includes a first outlet pipe which discharges permeated water, and a permeated water flow control valve connected to the first outlet pipe and regulating a pressure in the first pressure vessel. An energy recovery apparatus is provided between the first outlet pipe and the permeated water flow control valve.

Provided is a fresh water generation system which filters biotreated water produced by microbiologically treating waste water via a primary semi-permeable membrane (8), and then mixes concentrated water rejected by the filtration with seawater, thereby to filter the mixed water via a secondary semi-permeable membrane (14). This system enables frequencies of chemical cleaning and replacement of the secondary semi-permeable membrane to be reduced. The fresh water generation system comprises: a primary semi-permeable membrane apparatus (9) which separates microorganism treating waste water into permeated water and concentrated water; a secondary semi-permeable membrane apparatus (13) which filters mixed water prepared by mixing the concentrated water into seawater. In the fresh water generation system, the primary semi-permeable membrane (8) has an equal to or a higher microorganism adhesive property than the secondary semi-permeable membrane (14).

Disclosed herein are systems and methods of extracting a high protein food product from legumes comprising: milling a supply of legumes to form a fine powder; hydrating the fine powder to form a liquid slurry; separating solids from the liquid slurry to form a milk-like fluid; pasteurising said milk-like fluid to remove unwanted organisms therefrom; filtrating said pasteurised milk-like fluid to remove permeates therefrom to form a substantially liquid product; and removing most of the moisture from the substantially liquid product to generate a high protein food product in the form of a powder.

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.

A spiral wound module assembly including: a plurality of spiral wound modules aligned within a pressure vessel with a first module located adjacent the first end and a second module located adjacent the second end, a flow plate including opposing first and second sides positioned within the pressure vessel between the first spiral wound module and the first end of the pressure vessel with the first side facing the first spiral wound module and the second side facing the first end, and wherein the flow plate includes a plurality of holes passing from the first side to the second side which create a pressure drop in fluid passing from the first spiral wound module and the closer of the feed inlet port and concentrate outlet port; and a differential pressure sensor adapted to measure differences in pressure between fluid located on the opposing sides of the flow plate.

A reverse osmosis system for a seawater desalination system is provided. The reverse osmosis system includes: a high pressure pump configured to supply pretreated seawater at high pressure; a reverse osmosis apparatus configured to desalinate by reverse osmosis the seawater supplied from the high pressure pump; and a pressure exchanger connected to a high salinity water outlet of the reverse osmosis apparatus and configured to recover part of pressure of discharged high salinity water to the reverse osmosis apparatus, wherein the reverse osmosis apparatus includes: a vessel in which a plurality of reverse osmosis membrane units are arranged in a first stage and a second stage; an inflow and outflow portion coupled to a first end of the vessel and connected to a seawater inlet and a high salinity water outlet; a partition wall configured to partition an inner space of the inflow and outflow portion into two spaces; and a transport space portion coupled to a second end of the vessel and configured to guide the seawater moved from a plurality of reverse osmosis membrane units arranged in the first stage to move to a plurality of reverse osmosis membrane units arranged in the second stage.