The present invention includes systems and methods for treatment of seawater RO system for recovering most of the water (i.e., 85-90%) from the concentrate of a brackish groundwater reverse osmosis treatment system that may use, e.g., a batch method. With proper pH control and antiscalant dosage, the batch-treatment SWRO system of the present invention can be used to recover water from silica-saturated RO concentrate without fouling the membranes. Silica concentrations of over 1,000 mg/L are attainable with relatively minimal pre-treatment of the silica-saturated feed solution.

The present invention provides a membrane distillation apparatus that comprises an evaporation part comprising a liquid phase part 1 in which water to be treated flows, a gas phase part 1, and a hydrophobic porous membrane that separates the liquid phase part 1 and the gas phase part 1, a condensation part comprising a liquid phase part 2 in which cooling water flows, a gas phase part 2, and a cooling member that separates the liquid phase part 2 and the gas phase part 2, and a gas phase part 3 connecting the gas phase part 1 with the gas phase part 2, wherein the pressure of the gas phase parts 1 to 3 is 1 kPa or higher and the saturated steam pressure of water at the temperature of water to be treated or lower.

Improved systems and processes for forward osmosis water purification or desalination are herein disclosed. According to one embodiment a process for purifying contaminated water is provided wherein a contaminated feed solution stream comprising water and with a first osmotic pressure is passed through a semipermeable membrane to a draw side having a draw solution stream with a second osmotic pressure on a draw side of the semipermeable membrane. The diluted draw solution stream is heated, agglomerated and cooled to produce a cooled single phase water rich stream that is purified to produce a water product stream.

Provided is a temperature-based dialysate regeneration device for regulating a temperature of dialysate discharged from a hemodialyzer to remove uremic toxins and waste therefrom, the temperature-based dialysate regeneration device including: a Joule-Thomson refrigerator, including a compressor, condenser, expander and evaporator, an adsorbent column, and a dialysate heat exchanger in which heat transfer occurs between dialysates. The refrigerant used for the JT refrigerator may be a mixture of two or more refrigerants to enhance the heat transfer generated by the latent heat in the evaporator and the condenser.

The present invention relates to a method for purifying hydrogen peroxide, and more particularly, to a method including purifying a crude product of hydrogen peroxide using a primary purification system, and purifying a primarily purified hydrogen peroxide solution using a secondary purification system. One of the primary purification system and the secondary purification system includes an electrodeionization system, and the other one of the primary purification system and the secondary purification system includes at least one from among a distillation system, a resin system, a reverse osmosis system, and a combination system thereof.

A water desalination system including a sweeping gas membrane distillation (SGMD) unit in integration with a Jet Impingement Condenser (JIC) unit. The SGMD unit includes a water heater and a water pump connected through an inlet and an outlet to a semi-permeable membrane placed inside a distillation unit. The SGMD unit further includes an air compressor coupled to a humidity sensor, a pressure gauge, a temperature probe, and a flow meter. The JIC unit includes an air accumulation enclosure with an inlet, an air compressor outlet, and a coolant. The JIC unit further includes a perforated plate, and a condenser surface in contact with a sweeping gas inlet. The water desalination system further includes a power unit connected to the water heater and the coolant.

The present disclosure presents desalination systems and related methods. One such method comprises receiving produced water brine; pre-treating the produced water brine to at least remove solids from the produced water brine; passing the pre-treated produced water brine through a freeze desalination equipment, wherein the pre-treated produced water is subject to freezing temperatures that are within 5 degrees Fahrenheit of the pre-treated produced water's freezing point; and/or separating frozen pre-treated produced water from unfrozen pre-treated produced water, wherein the frozen pre-treated produced water has a saline concentration that is reduced after being processed through the freeze desalination equipment.

For powering a vehicle, a high energy density fuel is preferred. However, for example when the high energy fuel is highly concentrated hydrogen peroxide, this fuel may be dangerous to handle; especially when the person handling the fuel is a normal consumer filling a fuel reservoir of his vehicle at a gas station. The present invention therefore provides a vehicle arranged to receive a diluted-and thus safer-fuel, and to densify this fuel to a concentrated fuel in low quantities on board for direct use. To this end a fuel densifier is provided in the vehicle arranged for receiving liquid diluted fuel and arranged to provide a concentrated fuel based on the diluted fuel, the concentrated fuel having a higher energy density than the diluted fuel. A power conversion module of the vehicle is arranged to convert the concentrated fuel to kinetic energy for powering the vehicle.

An air filter module adapted to be used with a projection module and disposed to cover an air vent of the projection module. The air filter module includes a filter component and a cleaning unit. The cleaning unit is disposed to cover the air vent and configured to drive the filter component to have a movement so as to remove the dust on the filter component according to a cleaning-start signal. A projection device adopting the air filter module is also provided.

A system for continuously treating water with residual oil and/or solids includes a treatment system with inline mixers. A pH adjustment fluid may be added to the water in a first inline mixer. A micro-encapsulating flocculating dispersion flocculant may be added in a second inline mixer. The addition of the micro-encapsulating flocculating dispersion flocculant may cause flocculation of residual oil and/or solids in the water to form a pin flocculant. An activator may be added in a third inline mixer and a conditioner may be added in a fourth inline mixer. Bulk flocculant may be formed from the pin flocculant after the addition of the conditioner. The resultant mixture may flow to a settling tank where the flocculants may settle to produce treated water. After settling, the treated water may flow through a mechanical filter and/or a sorption filter to produce water suitable for desalination and/or other downstream processes.