Abstract: A method of making a visible light photo-catalyst is provided, the method comprising doping a titanium dioxide nanocrystal with iron to provide an iron-doped nanocrystal, washing the iron-doped nanocrystal with an acid to produce an acid-washed iron-doped titanium dioxide nanocrystal and rinsing the acid-washed iron-doped titanium dioxide nanocrystal to remove a residual of the acid, thereby providing a visible light photo-catalyst. The photo-catalyst is also provided, as are methods of using the photo-catalyst in remediation.

Abstract: The filtration system of the present invention comprises first and second filtration tanks. The first filtration tank has a first floating filter media layer, a first upper screen with a first aperture ratio, a first inlet, a first backwash water supply source, and a first backwash water outlet means. The second filtration tank has a second floating filter media layer, a second upper screen with a second aperture ratio, a second inlet, an inflow blocking mechanism capable of blocking inflow of water to be treated through the second inlet, a second backwash water supply source, and a second backwash water outlet means. The first aperture ratio is smaller than the second aperture ratio.

Abstract: A waste liquid treatment device (20) treats water to be treated that contains at least hydrogen peroxide, by decomposing the hydrogen peroxide. The waste liquid treatment device (20) is equipped with a housing (21), an introduction port (22) that is provided to the housing (21) and that introduces the water to be treated into the housing (21), a discharge port (23) that is provided to the housing (21) and that discharges treated water to be obtained by treating the water to be treated, and one or more channel-defining members (24) that are disposed within the housing (21) and that have a surface that a catalyst is disposed on, wherein the one or more channel-defining members (24) define, between the introduction port (22) and the discharge port (23), a channel (P) for the water to be treated, the channel (P) having a turning in at least one position.

Abstract: A system for treatment of contaminated sediments and soils using free radical chemical reaction and phase separation processes comprises a sediment or soil inlet system, a slurry tank, wherein the inlet system feeds the slurry tank, a water make-up tank, an optional acid storage tank, wherein the water make-up tank and the acid storage tank are connected to the slurry tank, a reaction vessel, wherein the slurry tank is connected to the reaction vessel, an oxidant agent storage tank, an optional catalyst storage tank, wherein the oxidant agent storage tank and the catalyst storage tank are connected to the reaction vessel, a first particle separator, wherein the reaction vessel is connected to the first particle separator, and an oil/water separator, wherein the first particle separator is connected to the oil/water separator is disclosed. A method for treatment of contaminated sediments and soils is also disclosed.

Abstract: A modular filter for a submersible pump that has a filter housing with an integrally formed pump coupling that telescopically receives pail of a housing of the pump and a filter chamber defined by a pair of spaced apart perforate sidewalls having filter media disposed therebetween. The perforate filter chamber defining sidewalls are opposed to one another with one of the perforate sidewalls defining a first intake grate inline with an intake of the pump and the other one of the perforate sidewalls defining at least one second intake grate that can function as a bypass should the filter media inline with the first intake grate become plugged. In a preferred embodiment, the other one of the perforate sidewalls includes a filtrate grate adjoining the at least one second intake grate. In a preferred embodiment, the other one of the sidewalls has a pair of spaced apart second intake grates outboard of the pump intake that are generally coplanar with the filtrate grate.

Abstract: Separation processes using osmotically driven membrane systems are disclosed generally involving the extraction of solvent from a first solution to concentrate a solute by using a second concentrated solution to draw the solvent from the first solution across a semi-permeable membrane. Pre-treatment and post-treatment may also enhance the osmotically driven membrane processes.

Abstract: A near-zero-release treatment system and method for high concentrated organic wastewater is in the chemical engineering and environment protection field, whose core technology is SCWO. The wastewater and sludge are grinded by the homogeneous pump, pressurized by high-pressure plunger pump, transported to successive pipeline for preheating and mixing with the oxygen and undergoes SCWO reaction in the reactor. After pressure release in the pressure relief device, the reacted fluid passes through the self-cleaning filter and gas liquid separator for insoluble solid and gas separation; then enters the MVR for crystallization of the soluble salts to realize near-zero-release of the feeding. The regular water treatment technology (coagulation sedimentation, membrane biotechnology, membrane technology, etc.) is adopted to complement SCWO, which lowers the operating parameters of the reactor and cuts the operating cost by treating the remaining COD with regular water treatment technology.

Abstract: Methods and compositions for improving water quality by reducing chlorine demand, decreasing disinfection by-products and controlling deposits in water systems include adding low concentrations of supplemental oxidants, for example, RE-Ox® to the systems.

Abstract: Described herein are mixed matrix filtration membranes and related, compositions, methods and systems and in particular mixed matrix filtration membranes with an embedded polymer network and/or embedded polymeric micro/nanoparticles functionalized with a functionalization polymer covalently and/or non covalently linked to the micro/nanoparticles and related compositions, methods, and systems.

Abstract: A rapid stirring machine including a tank for stirring sludge and a flocculant; a drive shaft disposed in the tank; and an edged turbine blade attached to the drive shaft, the edged turbine blade including turbine blades that are disposed along a virtual circle centered around the axis of the drive shaft, on at least one of the front and back sides of the edged turbine blade in the axial direction of the drive shaft, the turbine blades being raised in the axial direction of the drive shaft.

Abstract: A method of decontaminating soil and ground water containing organic contaminants and metal compounds. It comprises the steps of first treating such soils and ground water with an effective amount an aqueous solution containing a peroxide and a water soluble chelating agent for a time sufficient to have the water soluble chelating agent chelate at least one of the metals of the metal compounds present in the soil and ground water. Next, the chelated metals are brought into contact with the peroxide to catalytically convert the peroxide to an oxidizing agent and hydroxyl ion. The hydroxyl ion converts the halogenated organic compound into environmentally safe, non-toxic compounds. Gases that are produced from this reaction, and from the oxidation of organic compounds, are used to diffuse solution into the soil to chelate calcium and magnesium, thereby causing the sodium to be dislodged from the soil and reduce sodicity in the soil.

Abstract: The present process relates to thermally hydrolyzing sludge in a thermal hydrolysis system. A flash tank or waste heat boiler is located downstream of the thermal hydrolysis system. Hydrolyzed sludge is continuously directed into the flash tank or waste heat boiler for recovering supplemental steam. The supplemental steam is used independently or in combination with live steam produced by a main boiler to heat sludge being directed into the thermal hydrolysis system.

Abstract: A treated water tank in oil sand plant, comprising a first housing; an inlet provided in the first housing, through which a treated water flows in; an outlet provided in the first housing, through which the treated water stored is discharged; a second housing installed in the upper side of the first housing and communicated with the first housing by a pressure-controlling pipe; a gas discharge pipe provided in one side of the second housing for opening to the air; and a gas curtain provided in the second housing for preventing the treated water stored in the first housing from being in contact with the air. The treated water tank in oil sand plant according to the present invention simplifies the process of producing the treated water to be reused from the production water, reduces the risk of environment contamination due to the reuse of more purified treated water.

Abstract: Disclosed are methods of custom stabilization of the hydrogen peroxide used in the safe in-situ treatment of soil and groundwater. In one embodiment, disclosed is a method of in-situ chemical oxidation treatment of soil and/or groundwater wherein the hydrogen peroxide has been stabilized with carboxylate salt (e.g., sodium citrate, sodium malonate, or sodium phytate).

Abstract: Described herein are various methods, systems, and apparatus for reducing and eliminating biofilms from hydrocarbons. A combination of oxidizing agents and radiation of certain wavelengths forms a synergistic reaction. The synergistic reaction generates EMODs, which are effective in reducing microbial count and eliminating or blocking biofilm formation, particularly in anaerobic environments. This synergistic reaction has a relationship to EMOD creation and has a detrimental effect on Microbial Contamination (MC), Microbial Influenced Corrosion (MIC) and biofilm creation. MC, MIC and biofilm can be eliminated or greatly reduced with the treatment methods in or on equipment including pipelines, storage tanks, and refinery processing equipment.

Abstract: A dynamic demulsification system to facilitate the removal of water from oil for use in a gas-oil separation plant (GOSP) which has a dehydrator vessel in fluid communication with a desalter vessel which in turn is in fluid communication with a water/oil separator vessel includes the following system components: an in-line microwave treatment subsystem upstream of one or two of each of the dehydrator vessel, the desalter vessel and the water/oil separator vessel, each of which vessels receives a water-oil emulsion; a sensor for the real-time monitoring and transmission of data representing one or more properties of the water-oil emulsion in the respective vessel(s) and/or downstream of the respective vessel(s) with which the sensor is associated; and a processor/controller that receives the data from the sensor and transmits one or more signals to the one or both of the respective in-line microwave treatment subsystem(s) to generate and apply microwave energy of predetermined characteristics to the flowing

Abstract: A filter element for a filter device has a filter housing (3; 4). The filter element (1) includes a receiving part (19) which, when the filter element (1) is located in the filter housing (3; 4) in the operational position, comes into fluid communication with a housing part (17; 18) of the filter housing (3; 4) to form a fluid connection (9). The receiving part (19) of the filter element (1) has an inner, first guiding path (37) for sealing contact to the housing part (17) of the filter housing (3) according to a first mode of construction and an outer, second guiding path (51) for sealing contact to the housing part (18) of the filter housing (4) according to a second mode of construction.

Abstract: A dispenser system for delivering various combinations of dispersants to a body of water with the various combinations of dispersants supplied to the body of water through the interchanging of dispensing cartridges which are attachable to a main dispensing cartridge where a condition for interchanging of dispensing cartridges may be triggered by an event and the dispersants are isolated from a floatation member in the dispenser system.

Abstract: A portable water treatment system includes at least one sub-system to treat water including a flocculation system, a chlorination system, and a bio-sand filter system. The water treatment system may include multiple sub-systems for treating water that feed into one another. The sand filter system may include a mini bio-sand filter, a foam filter, or a pressed block filter. The flocculation system may include a tank bottom that urges settling particles toward a sump and a ladle that removes settled particles. A manual pump or siphon may be included in the water treatment system.

Abstract: Method for the continuous thermal hydrolysis of sludges containing organic matter, said method comprising the steps of: simultaneously injecting pressurized steam (100) into said sludges and mixing said sludges with said steam by means of a dynamic mixer-injector (4) so as to obtain a single-phase mixture, conveying said single-phase mixture towards a tube reactor (4) under pressure and bringing about the plug flow of this mixture into said reactor for a retention time that is sufficient and at a temperature that is sufficient to enable the thermal hydrolysis of the organic matter present in said sludges, cooling said single-phase mixture at its exit from said tube reactor to a temperature enabling the subsequent digestion of the hydrolyzed organic matter that it contains, depressurizing said cooled single-phase mixture.