A modular system for waste treatment, water recycling, and resource recovery includes a buffer tank to receive and pre-treat raw organic waste, at least one reactor tank configured as an anaerobic bioreactor that receives and digests pre-treated waste from the buffer tank, a membrane module having a membrane configured to filter waste from the digested waste from the at least one reactor tank to produce a permeate, a permeate collection tank configured to collect and store the permeate generated by the membrane module, a pump system having a plurality of pumps, and a control system configured to monitor the flow of waste and to control the pump system to control the flow of waste between the buffer tank, the at least one reactor tank, the membrane module, and the permeate collection tank.

A method, system and composition is described for treating waste generated from manufacturing operations including at least one of Printed Circuit Boards Fabrication (PCB FAB), General Metal Finishing (GMF), semiconductors manufacturing, chemical milling, and Physical Vapour Deposition (PVD). The method, system and composition are used to create zero liquid discharge recycling.

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.

Devices, methods, and systems for producing a concentrated feed stream and a diluted feed stream using a solute stream provided to the low pressure side of the semi-permeable membrane during a reverse osmosis process. The process includes providing a semipermeable membrane having a first side and a second side and introducing a first feed solution stream on the first side of the membrane and a second feed solution stream on the second side, wherein the osmotic pressure of the of the first feed solution stream is greater than or equal to the osmotic pressure of the second feed solution stream. The process further includes exerting hydrostatic pressure on the first side of the membrane such that solvent passes from the first side to the second side thereby producing a concentrated first feed solution stream and a diluted second feed solution stream. Devices and systems for performing the processes are provided.

A portable and modular renewable energy microgeneration apparatus is disclosed that includes at least four modular units. The first modular unit includes a mixing tank and a chopper. The second modular unit includes a buffer tank, a liquor tank, and a pasteurization tank that pasteurizes waste that has been mixed with liquid from the liquor tank by the mixer, chopped into smaller sized components by the chopper, and pre-warmed by the buffer tank. The third modular unit includes a digestion tank that performs anaerobic digestion on pasteurized waste received from the pasteurization tank. And the fourth modular unit includes a gas storage tank that stores gas generated by the waste in at least one of the mixing tank, the chopper, the buffer tank, the liquor tank, the pasteurization tank, and the digestion tank. Each of the four modular units is both portable and modular.

A method and system of providing ultrapure water for semiconductor fabrication operations is provided. The water is treated by utilizing a free radical scavenging system. The free radical scavenging system can utilize actinic radiation with a free radical precursor compound, such as ammonium persulfate. The ultrapure water may be further treated by utilizing ion exchange media and degasification apparatus. A control system can be utilized to regulate a continuously variable intensity of the actinic radiation.

A method for treatment of mixed electroplating wastewater without a cyanide and a phosphorus-containing reductant without a cyanide and a phosphorus-containing reductant. A ferrous chloride solution is added into electroplating wastewater without a cyanide and a phosphorus-containing reductant. The pH of wastewater is adjusted to 10.5-12. Pollutants such as sodium cyanide and hydroxyl-containing organic amine complexants are oxidized with sodium hypochlorite. Carboxyl-containing organic acid complexants are precipitated. Hexavalent chromium is reduced to trivalent chromium to form chromium hydroxide precipitate. Precipitate is removed by filtering and wastewater is adjusted to pH 4.5-5.5. Heavy metal ions are precipitated with sodium dimethyldithiocarbamate or sodium diethyldithiocarbamate. Precipitate and heavy metal capturing agents are adsorbed with activated carbon followed by removal of precipitate. Wastewater is adjusted to pH 6-8. Aliphatic polyamine complexants are destroyed using an available biological degradation technique to reduce chemical oxygen demand.

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.

A reverse osmosis apparatus for a seawater desalination system is provided. The reverse osmosis apparatus includes: a barrel in which a plurality of reverse osmosis membrane units with a reverse osmosis membrane wrapped in each reverse osmosis membrane unit are arranged; an inflow and outflow portion provided at a first end of the barrel and connected to a seawater inlet a high salinity water outlet; a partition wall configured to partition an inner space of the inflow and outflow portion into a first stage and a second stage; and a transport space portion provided in a second end of the barrel and configured to guide water being 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 at the second stage, wherein part of seawater fed to the inflow and outflow portion is fed around the tubes in the barrel and insulates the plurality of reverse osmosis membrane units in the barrel from external high temperature while being moved, and flows into the transport space portion.

The installation for separating a multivalent cationic species from a solution comprising this multivalent cationic species and lithium comprises a capture device (3) having an entry (2) and an exit (4). The capture device (3) comprises, between the entry (2) and the exit (4), a microfibre product (12) with a higher affinity for multivalent cations than for monovalent cations. The installation comprises a circulation system (5) adapted to circulate the solution from the entry (2) to the exit (4) in contact with the microfiber product (21), the microfibre product (21) capturing said multivalent cationic species.