1958 results about "Water recovery" patented technology

A process for producing aromatics from a hydrocarbon source in the presence of supercritical water comprising the steps of mixing a pressurized, pre-heated water stream with a pressurized, pre-heated petroleum feedstock, the pressurized, pre-heated water stream at a pressure above the critical pressure of water and a temperature above the critical temperature of water, feeding the combined stream to a supercritical water reactor to create a modified stream, cooling and depressurizing the modified stream, separating the depressurized stream in a vapor-liquid separator, condensing the vapor stream, separating the condensed stream into a water recovery stream and a light product recovery stream, extracting the aromatics from the light product recovery stream, depressurizing the liquid stream, separating the depressurized liquid stream in a heavy separator into an upgraded product stream, and recycling part of the upgraded product stream to the pressurized, pre-heated petroleum feedstock as a product recycle.

An optimal thermal seawater desalination process is disclosed, which combines two or more substantially different water pretreatment processes in a unique manner and in a special configuration, hereto unknown to prior desalination arts, to produce a high yield of high quality fresh water, including potable water. In this process a two stage NF membrane pretreatment unit (NF₂) with an energy recovery turbo charger (TC) device in between the stages or equipped with an energy recovery pressure exchanger (PX) is synergistically combined with at least one thermal desalination unit to form a dual hybrid of NF₂-Thermal (FIG. 4 ), or alternatively the two stage NF₂ unit is synergistically combined with a two stage SWRO unit (SWRO₂) with an energy recovery TC in between the stages or combined with one stage SWRO (SWRO₁) equipped with an energy recovery TC or PX system and the reject from the SWRO₂ or SWRO₁ unit is made make-up to a thermal unit to form a tri-hybrid of NF₂-SWRO_{2 reject}-Thermal (FIG. 5 ). In both the cases of di- or trihybrids the thermal unit is equivalent to a multistage flash distillation (MSFD) or multieffect distillation (MED) or vapor compression distillation (VCD) or thermal reheat (RH) evaporator. Typically a process of this invention using the two stage NF₂ initial pretreatment step will perform a semi-desalination step by reducing feed TDS by about 35 to 50%, but most important, especially to the thermal seawater desalination process, it removes the water recovery limiting, scale forming hardness ions of Ca⁺⁺ and Mg⁺⁺ by better than 80% and their covalent anions of sulfate to better than 95% and bicarbonate to about 65%. The removal of scale forming hardness ions, especially SO₄⁼, and bicarbonates allowed for the operation of thermal unit in the above hybrids at top brine temperature (TBT) much greater than its present TBT limit by the singular conventional process of 120° C. for MSFD and operation of MED or VCD or RH unit at TBT much higher than their present TBT limit of 65-70° C., with many advantages gained by this process over prior art sweater desalination processes. The process of this invention exceeds all prior thermal seawater desalination arts in efficiency, including water yield, product water recovery ratio and unit water cost as well as in energy consumption per unit product which is equivalent or less than other efficient prior art seawater thermal desalination processes. By this process, an NF product recovery ratio of 75 and 80% or better is achieved from the high salinity Gulf sea (TDS≈45,000 ppm) and about an equal product recovery ratio is also obtained from the SWRO or thermal unit when it is operated on NF product for a total water recovery ratio in excess of 52% for seawater

This patent discloses a cleaning system for shopping carts. The cleaning system may include a prewash station, a wash station, a rinse station, a drying station, a physical disinfecting station, a conveyor, and a recovery tank. The wash station may include brushes. The drying station may include a fan configured to blow a thin sheet of air downward and onto the shopping cart. The physical disinfecting station may include an ultraviolet light generator. The conveyor may include a track system having hooks attached to chains that are configured to be moved by a conveyor motor. A frame may surround and support the stations. The cleaning system additionally may include a water recovery/supply system and an external spray wash hose attached to a reservoir to pre-prewash the shopping carts.

An optimal two stage NF₂ membrane pretreatment unit is synergistically combined with a following two stage SWRO₂ desalination unit, where each of the two stage NF₂ and SWRO₂ has an energy recovery device (ERD) turbocharger (TC) in between the stages to form a dual hybrid of NF₂-SWRO₂ (FIG. 1 ); alternatively the two stage NF₂ unit is synergistically combined with one stage ERD equipped SWRO, unit operated at up to 85 bar (FIG. 2 a, b); or the two stage NF₂ unit combined with one stage ERD equipped SWRO₁ unit, with part of its reject recycled constituting part of the feed to the NF units (FIG. 3 a,b). The process of this invention raises significantly the product water recovery ratio, producing SWRO hybrids that exceed all prior arts in efficiency, including water yield, product recovery ratio, dramatically reduces both the energy consumption and water production unit cost.

The present invention discloses a novel apparatus and methods for augmenting the power of a gas turbine engine, improving gas turbine engine operation, and reducing the response time necessary to meet changing demands of a power plant. Improvements in power augmentation and engine operation include additional heated compressed air injection, steam injection, water recovery, exhaust tempering, fuel heating, and stored heated air injection.

Fuel cell systems that include at least one fuel cell stack adapted to receive a fuel stream containing hydrogen gas or other proton source, and an oxidant stream containing oxygen gas. The systems include an oxidant supply system adapted to deliver an enriched, or concentrated, oxidant stream to the fuel cell stack. In some embodiments, the oxidant supply system is adapted to receive an air stream and produce an oxygen-enriched stream therefrom. In some embodiments, the fuel cell system includes a water-recovery system adapted to recover water produced in the fuel cell stack, such as may be recovered from the cathode exhaust stream from the fuel cell stack. In some embodiments, the recovered water is utilized as at least a portion of a feed stream for the fuel cell system, such as for a reformer or electrolyzer that produces hydrogen used as fuel for the fuel cell stack.

A hydrogen production and water recovery system for a fuel cell utilizes hydrogen storage in a metal hydride or the like. An exhaust stream from the fuel cell is passed through the storage media, simultaneously to cool the exhaust stream to promote condensation of water vapor and to heat the media to promote generation of hydrogen. The recovered water can be stored, returned to a coolant loop, and at a later time electrolyzed to generate hydrogen.

The invention discloses a device for a landslide model test. The device comprises a landslide model, a model box, a rainfall system, a water supply system, a water recovery system, a reservoir water level rising and falling system, a landslide model external data acquisition device and a landslide model internal data acquisition device, wherein the rainfall system, the water supply system, the reservoir water level rising and falling system, the landslide model external data acquisition device and the landslide model internal data acquisition device are connected with an integrated control platform; the rainfall system is arranged above the model box; the water supply system is arranged above the rainfall system; the water recovery system is arranged under the model box; the water recovery system is connected with the water supply system through a water supply pipe; the reservoir water level rising and falling system is arranged on the lateral side of the model box and is communicated with the model box through a water supply and drainage hole with a filter net. The invention also provides a method for the landslide model test. The device can be used for simulating and realizing the water level change and rainfall intensity within a short period of time; the device can be comprehensively automatically controlled; the precision of the device for the landslide model test can be increased; the method is simple and can be used for increasing the efficiency of the landslide model test.

This invention is related to a process of disposing urban sewage, which comprise the steps of coagulate filtration, ozone oxidation, biological oxidation to dispose urban sewage, so that the residual undegradable organic substances, bacteria and virus in the second-class urban sewage can be removed and the water can be recycled. According to different usages of the recycled water, the process also comprises reverse osmosis or nanoscale filtration treatment to further remove the residual organic and inorganic substances in the water. The process is a combination of coagulate filtration, ozone oxidation, biological oxidation and reverse osmosis, designed to resolve such problems as urban sewage disposal and water recovery. The process can obtain high-quality recycled water with a low cost, showing high cost performance, which is important to resolving urban water depletion, raising the utilization rate of water resources, reducing environmental pollution and promoting sustainable development of the society.

The invention proposes a heat and cool power cogeneration system of an integrated multi-functional efficient mini-type gas turbine, which belongs to the novel heat and cool power cogeneration system device. To solve the frequent mismatching of cold and heat load and low efficiency operation of the conventional cogeneration system, measures such as steam reinjection, inlet gas cooling, gas fume and condensate water recovery are introduced on the basis of the heat and cool power cogeneration system of the mini-type gas turbine; in addition, the number of steam outlets and hot-water outlets is increased, thus forming the heat and cool power cogeneration system of the integrated multi-functional efficient mini-type gas turbine. The system is provided with various operation modes suitable for different occasions, can effectively solve the problem of mismatching of cold and heat load of the cogeneration system, so that the system can keep working in highly efficient mode.

An apparatus for the fixed-film anaerobic digestion of flushed livestock manure includes an enclosed digester tank (fixed or flexible roof), internal media for biofilm development, a biogas collection and flare system, various pumps, and hydraulic control systems. The preferred media has substantially vertically-oriented, uninterrupted channels to promote enhanced bacterial attachment and biofilm development. The immobilization of microbial biomass within the reactor as a biofilm allows effective treatment of the wastewater at ambient and higher temperatures, as well as reasonable hydraulic retention times. The composition and concentration of bacterial groups in the biofilm developed on the media in the fixed-film digester result in a significantly enhanced anaerobic degradation process. This novel fixed-film digester design expands the potential application of anaerobic digestion to dilute livestock waste with significant levels of suspended solids. This holistic manure treatment system not only stabilizes the wastewater but also produces energy (biogas), controls odors, reduces pathogens, minimizes environmental impact from waste emissions, and maximizes fertilizer and water recovery for reuse.

A fuel supply system (1) is disclosed for use with an internal combustion engine or a fuel cell system (408). The fuel supply system may include a water supply (4) for supplying water; a fuel supply (3) for supplying fuel; a fuel reformer (10) including an air inlet (52,70) converts the water, air, and fuel into hydrogen and byproducts, and supplies the hydrogen to combustion chambers (2) of an internal combustion engine; and an injector subsystem (5) coupled to the water supply injects water into the combustion chambers following ignition of the hydrogen in the combustion chambers. The fuel supply system may include a water recovery subsystem (6) coupled to an exhaust output (9) of the internal combustion engine, the internal combustion engine producing an exhaust including water vapor and CO₂, the water recovery subsystem comprising a filter (13) for removing CO₂, from the water vapor.

A pre-treatment method for cleaning and maintaining reverse osmosis membrane filters by injecting sulfurous acid into waters with suspended solids in a liquid fraction to be filtered to form sulfurous acid (H₂SO₃) to acid leach heavy metals into the liquid fraction, reduce alkalinity and mineral scaling, add sufficient SO₂ as a biocide to attack bacteria and other micro organisms to prevent membrane fouling, reduce iron to prevent iron deposit build-up, scavenge and remove dissolved oxygen prior to filtration to prevent membrane oxidation, and then sequentially filtering the acidified water through membrane filters to create a metal free permeate and a brine retentate, which can be pH adjusted to remove the heavy metals as metal hydroxide precipitates.

The invention discloses a salt containing water processing method and system. The processing comprises the following steps: subjecting salt containing water to nano filtration and separation to obtain nano filtration producing water and nano filtration concentrated water; subjecting nano filtration producing water to reverse osmosis separation to obtain product water and reverse osmosis concentrated water; and subjecting nano filtration concentrated water to normal temperature crystallization and separation. The provided salt containing water processing method and system has the advantages that the technology procedure is concise, the investment, operation, and maintenance costs can be reduced prominently, and the operation procedure is simplified. The provided method and system are used to process salt containing water, and can obtain a water recovery rate of 90% or more; only about 10% of concentrated water is separated through evaporation and crystallization, and thus the working amount of the evaporation and crystallization step is greatly reduced. In the other aspect, during the processing process, the ions in the salt containing water can be separated according to the valence state, and thus comprehensive utilization of recyclable resources in salt containing water can be achieved.

The invention belongs to the technical field of chemical wastewater treatment, and in particular relates to a white carbon black production wastewater treatment technology. The technology comprises the steps of pretreating white carbon black production wastewater so that the water quality of the treated wastewater can reach the water quality requirement of a membrane treatment system; carrying out membrane filtration so that enriching sodium sulfate in the wastewater is enriched at one side of a membrane until the content of sodium sulfate is not less than 10% and the produced water at the other side reaches a recycle water index and is recycled to a production system for reuse; carrying out freezing crystallization on the thick water to separate out mirabilite, separating out the crystallization mother liquor so as to obtain the mirabilite and returning the crystallization mother liquor back to a membrane concentration system, and thermally dehydrating the mirabilite so as to obtain anhydrous sodium sulphate which is not less than 98% and used for selling; or evaporating and crystallizing the thick water with the sodium sulfate being not less than 10% through directly utilizing an evaporator so as to separate out the anhydrous sodium sulphate. The water source recycling and chemical raw material recovery are realized through low energy consumption. Through cooperatively using two technologies, the energy consumption for treating each tonnage of wastewater can be greatly reduced, and the water recovery rate of a whole treatment system is not less than 92%; the sodium sulfate content of an anhydrous sodium sulphate product is not less than 98%.

The Hybrid MHD-FSU (Field Sanitation Unit) innovation is a self-contained sewage treatment plant that fully converts sewage/wastewater into (1) solid organic material, (2) potable, pathogen-free drinking water, and (3) generates electricity. At a high level, the system consists of four main components: (1) Mixer, (2) MHD Reactor, (3) Filter, and (4) Turbine. The innovation presents a stand-alone compact configuration of typical wastewater treatment components (equalization & mixing, process treatment, filtration) that are combined with the customized MHD reactor to perform the waste treatment/water recovery processing.

The Hybrid magnetohydrodynamo (MHD) Field Sanitation Unit has the ability (1) to recover an organic material (2) to recover a pathogen free, clean potable drinking water, and (3) to generate electricity using wastewater as the conductive medium. The invention also relates a core heating microwave source coupled to an outer rigid mantle boundary that compose an MHD electrode pair. The invention assemblies are generally configured of three components: (a) magnetron, waveguide & a launch assembly; (b) the perovskite ceramic components; and (c) the conductive wastewater sludge fluid but more specifically the MHD assemblies are described herein in detail. FIG. 1 illustrates a general process flow of the invention. The main components of the invention are composed of the following: (1) the clean water supply feed, (2) the influent raw wastewater (3) the mixer, (4) the MHD reactor chamber, (5) the storage tank for clean water, (6) the filtration system producing potable water, (7) the storage bin for solids & organic material (8) hydro-turbine (9) the potable drinking water storage, (10b) the battery storage system with power conditioning subsystem.