Abstract: A treatment for a large body of water to make the water suitable for recreational purposes is disclosed. A sedimentation zone and a dissipation zone are designated in the water body. A disinfection method based on a CT index and a flocculant composition are utilized in the sedimentation zone to aid in the settling of different microorganisms and/or contaminants. Also, the water in the sedimentation zone is minimally disturbed to facilitate the sedimentation process. A permanent chlorine residual is maintained in the dissipation zone by adding an efficient amount of a chlorine disinfectant such that at least a 0.5 mg/L free chlorine level is maintained in the water volume. Water is injected into the dissipation zone by means of one or more inlet nozzles. Along with natural currents produced by winds and water temperature differences, a water dissipation pattern from within the dissipation zone into the sedimentation zone is generated.

Abstract: A system and method for decontaminating a fluid and recovered vapor, particularly processing and recycling contaminated water, utilizing a vaporizer-desalination unit to separate a contaminated water flow into a contaminated disposal flow and a clean water vapor flow. The contaminated disposal flow may be dried and separated into recovered minerals utilizing heat from the clean water vapor flow to dry the contaminated disposal flow.

Abstract: The invention relates to a method and an assembly for recovering magnesium ammonium phosphate from slurry that is supplied to a reaction container (10) in which an aerobic milieu is present and in which the slurry is guided in a circuit with the aid of ventilation. Cationic magnesium, such as magnesium chloride, is added to the slurry, and magnesium ammonium phosphate crystals which are precipitated from the slurry are removed via a removal device (30) provided in the base region of the reaction container. Substances which contain magnesium ammonium phosphate crystals collected in the removal device (30) are loosened and/or rinsed.

Abstract: This solid-liquid separator (100a) includes a screw type dehydration unit (2) including a screw (22) and that performs primary dehydration on an object to be processed, and a rotary-body type dehydration unit (3) including a plurality of rotary bodies (30), disposed subsequent to the screw type dehydration unit, and that performs secondary dehydration on the object to be processed on which the primary dehydration has been performed by the screw type dehydration unit. The screw rotates at a higher rotational speed than those of the rotary bodies.

Abstract: A water recycling apparatus and method for a pool filtration system. A holding tank receives backwashed water containing water-borne particles, and is configured to allow for settling of particles into regions of clear water, and lower regions of sediment. Performing a backwash of the filter directs the backwash into the holding tank for settling for at least 24 hours. A recycling outlet in the tank is coupled through the pool filtration system and its valves to allow redirecting this filtered (or recycled/refiltered) water back to the pool, or for other uses, so that it is not directed down a drain, or otherwise wasted. In addition, the liquid portion of the sedimentary regions can be recycled as desired, such as to garden beds, and the lower sedimentary solids disposed of through a sewer connection or manually collected for disposal.

Abstract: Systems and methods related to desalination systems are described herein. According to some embodiments, the desalination systems are transiently operated and/or configured to facilitate transient operation. In some embodiments, a liquid stream comprising water and at least one dissolved salt is circulated through a fluidic circuit comprising a desalination system. In some embodiments, a portion of the desalination system (e.g., a humidifier) is configured to remove at least a portion of the water from the liquid stream to produce a concentrated brine stream enriched in the dissolved salt. In certain cases, the concentrated brine stream is recirculated through the fluidic circuit until the concentrated brine stream reaches a relatively high density (e.g., at least about 10 pounds per gallon) and/or a relatively high salinity (e.g., a total dissolved salt concentration of at least about 25 wt %).

Abstract: The present disclosure provides stable, low chloride paint detackifier compositions. Also disclosed are methods of making the paint detackifier compositions and methods of using the paint detackifier compositions. The detackifier may be made from cationized starch and sodium aluminate. The starch can be wheat starch, corn starch, tapioca starch, potato starch, rice starch, sweet potato starch, sago starch, mung bean starch, arrowroot starch, and any combination thereof.

Abstract: This invention relates to a method for producing geothermal power using geothermal brines while producing a reduced silica and iron brine having improved injectivity. The resulting compositions include a composition with reduced silica, iron, and lithium having reduced quantity of total suspended solids.

Abstract: A method of boron-contained wastewater treatment includes the following steps. Pretreatment: Mix a boron-contained wastewater with hydrogen peroxide for reaction at pH 8-12. Precipitation: Add n moles of barium compound into the pretreated boron-contained wastewater to provide perborate precipitation at pH 8.5-12. The number n is obtained from an equation of n=([B]*a+[NO3]*0.01+[F]*0.01+[CO3]*1+[SO4]*1)*V wherein a is ranged from 0.6-0.9. [B], [NO3], [F], [CO3], and [SO4] are molarities of boron, nitrate ion, fluoride ion, carbonate ion, and sulfate ion of the boron-container wastewater. V is the volume of the boron-container wastewater. A fluidized bed reactor is used.

Abstract: A method includes supplying a supersaturated brine stream having a plurality of minerals and anti-scalant from a water treatment system to a gypsum removal system disposed within a mineral removal system. The gypsum removal system includes a gypsum reactor that may receive the supersaturated brine, may deactivate the anti-scalant such that gypsum precipitates from the supersaturated brine, and may generate a gypsum slurry having a mixture of desupersaturated brine, precipitated gypsum, and the anti-scalant in solution with the desupersaturated brine. The method also includes supplying gypsum seed crystals to the gypsum reactor. The gypsum seed crystals may precipitate the gypsum from the supersaturated brine to generate the gypsum slurry. The method also includes directing a first portion of the gypsum slurry from the gypsum reactor to a gypsum settler.

Abstract: A method for treating, and recovering phosphate compounds from, phosphate-containing wastewater. The method includes the steps of: (a) removing fluoride from the wastewater; (b) recovering a phosphate compound from the wastewater by maintaining supersaturation conditions for the phosphate compound; and (c) polishing the wastewater. A silica removal step may be optionally performed after step (a) and before step (b).

Abstract: A system and method of decreasing contaminant concentration in an oilfield brine fluid, such as a high density completions fluid, that includes mixing the oilfield brine fluid with chlorine dioxide (ClO2). The oilfield brine fluid includes dissolved contaminant, such as iron, and one or more dissolved salts, such as selected from the group consisting of NaCl, NaBr, CaCl2, CaBr2, and ZnBr2. The mixing is for a time sufficient for the ClO2 to react with at least one component of the oilfield brine fluid to form precipitated contaminant without reacting to the one or more salts.

Abstract: This invention relates to treated geothermal brine compositions containing reduced concentrations of lithium, iron and silica compared to the untreated brines. Exemplary compositions contain concentration of lithium ranges from 0 to 200 mg/kg, concentration of silica ranges from 0 to 30 mg/kg, concentration of iron ranges from 0 to 300 mg/kg. Exemplary compositions also contain reduced concentrations of elements like arsenic, barium, and lead.

Abstract: This invention relates to a method for selective removal of silica and silicon containing compounds from solutions that include silica and silicon containing compounds, including geothermal brines.

Abstract: The present invention relates to filtration of liquids, such as water, containing substances that desirably should be removed from the liquids. The invention relates in particular to a filtration cake, being produced in situ of a cleaning system from substances that desirably should be filtered away. Particular preferred embodiments of the present invention relate to treatment of waste water, where an activated sludge is provided, which sludge contains activated sludge flocs. These flocs are accumulated on a fluid penetrable support structure to form a layer of flocs, which subsequently is compressed to form a filter of desired properties. The invention also relates to adapting waste water—or other liquids containing biodegradable substances—to optimized biodegradation and filtration by deflocculating flocs in an activated sludge during or before a biodegradation step and subsequently promoting re-flocculation prior to filtering or other means of biomass separation.

Abstract: A system and method of decreasing contaminant concentration in an oilfield brine fluid, such as a high density completions fluid, that includes mixing the oilfield brine fluid with chlorine dioxide (ClO2). The oilfield brine fluid includes dissolved contaminant, such as iron, and one or more dissolved salts, such as selected from the group consisting of NaCl, NaBr, CaCl2, CaBr2, and ZnBr2. The mixing is for a time sufficient for the ClO2 to react with at least one component of the oilfield brine fluid to form precipitated contaminant without reacting to the one or more salts.

Abstract: A method for reclaiming and reusing a substantial portion of the waste water creating during the backwashing of a pool filter. The system uses a separate floating debris filter to remove solids before pumping the waste water into a sediment retention tank. The waste water is stored in the sediment retention tank for about a day, during which time the suspended solids settle to the bottom. The water in the sediment retention tank is then pumped back into the circulating pool system.

Abstract: The present invention relates to methods, apparatuses, and systems for treating water. The methods, apparatuses and systems reduce scaling associated with solubilized water hardness using a sequence of water treatment agents, including a first threshold agent shedding weak cation exchange resin and a second magnesium compound conversion agent water treatment. The system or apparatus and methods according to the invention provide synergistic reduction of hard water scaling and elimination of cementing on the insoluble magnesium compound.

Abstract: An extraction apparatus comprises an extraction vessel configured to remove an extracted material from a source material in contact with a process fluid to form a mixture. The apparatus further comprises a separation chamber and a process fluid circulation conduit, the conduit comprising a separation portion configured to receive the mixture and permit a portion of the extracted material to separate from the mixture within the separation chamber. The apparatus further comprises a temperature regulator configured to permit re-circulation of a temperature regulation fluid and regulate the temperature of the process fluid.

Abstract: A method for selective removal and recovery of silica and silicon containing compounds from solutions that include silica and silicon containing compounds, including geothermal brines. Also included are methods of preventing silica scale buildup in the geothermal power equipment and processes employing geothermal brines by the selective removal of silica.

Abstract: The present disclosure relates, according to some embodiments, to systems and methods of fluid treatment systems. Fluid treatment systems and methods thereof may be operable to remove contaminants and optionally reduce hardness. A fluid treatment system may comprise a feed stream configured to provide a contaminated fluid, a concentrate tank configured to receive the contaminated fluid from the feed stream, a filtration unit configured to receive the contaminated fluid from the concentrate tank, and a permeate stream operable to receive a treated fluid from the filtration unit. A concentrate tank may be operable to reduce hardness of the contaminated fluid. A filtration unit may be operable to filter contaminants from the contaminated fluid.

Abstract: The present invention relates to floating lakes and to the treatment of the water in such lakes. The present invention further relates to large floating lakes that can be installed within a natural or artificial water body to improve water conditions that are unsuitable for recreational uses. The floating lake can be provided with a chemical application system; a filtration system including a mobile suctioning device and filters; a skimmer system, and optionally a coordination system.

Abstract: Systems and methods related to the desalination of aqueous solutions containing one or more dissolved salts are generally described.

Abstract: A method of treating a wastewater is provided and can be used, for example, to treat a gas well production wastewater to form a wastewater brine. The method can involve crystallizing sodium chloride by evaporation of the wastewater brine with concurrent production of a liquor comprising calcium chloride solution. Bromine and lithium can also be recovered from the liquor in accordance with the teachings of the present invention. Various metal sulfates, such as barium sulfate and strontium sulfate, can be removed from the wastewater in the production of the wastewater brine. Sources of wastewater can include gas well production wastewater and hydrofracture flowback wastewater.

Abstract: The present invention relates to the recovery of nylon from co-mingled materials (e.g., carpet) with reduced or eliminated ash (e.g., calcium carbonate) contamination.

Abstract: A device is disclosed for the separation of liquid-liquid phase and/or a liquid-gas phase where one or more of the phases is suspended in water and has a bubble/drop/particle size in the sub micron and micron range, and/or fine particular organic or inorganic material is present in one or more of the phases. There is also disclosed a method and use for the device.

Abstract: A device is disclosed for the separation of liquid-liquid phase and/or a liquid-gas phase where one or more of the phases is suspended in water and has a bubble/drop/particle size in the sub micron and micron range, and/or fine particular organic or inorganic material is present in one or more of the phases. There is also disclosed a method and use for the device.

Abstract: Process to generate synthesis gas and/or liquid raw materials and/or energy materials from waste and/or biomass by performing the following steps: a) solvolysis of the organic components of waste and/or biomass in an alkaline solution or hydrate smelter at a temperature range of 150° to 250° C. and pressure between 3 and 12 bar, whereby the organic components are converted into at least one liquid phase and the inorganic components are sedimented; b) elimination of the inorganic components from the liquid phase by physical separation methods; c) transfer of the vapors generated during the solvolysis into a rectification column, where the organic components are separated from water; and d) further separation of the organic components by rectification, extraction and sorption and/or conversion by thermal gasification into synthesis gas or burnable gas.

Abstract: A wiping device includes an intaglio cylinder, a cylinder cleaning device, and a wiping liquid supply device. The intaglio cylinder is rotatably supported. The cylinder cleaning device removes excess ink adhered to an outer surface of the intaglio cylinder. The wiping liquid supply device supplies a wiping liquid for cleaning to the cylinder cleaning device. The wiping liquid supply device includes a waste liquid tank, a new liquid tank, a first pump, and second pump. The waste liquid tank stores a waste wiping liquid discharged from the cylinder cleaning device. The new liquid tank stores a clean wiping liquid. The first pump supplies the clean wiping liquid from the new liquid tank to the cylinder cleaning device. The second pump supplies a supernatant liquid of the waste wiping liquid stored in the waste liquid tank and separated into a precipitate and the supernatant liquid to the cylinder cleaning device.

Abstract: A Method for cleaning degraded oil comprising oil-soluble degradation products and a system for implementing the method are disclosed. The method comprises the steps of receiving an inlet flow (1, 1a, 1b) of degraded oil, precipitating oil-soluble degradation products from the degraded oil by cooling the degraded oil, passing the cooled degraded oil as a filtration flow (3, 3a, 3b) through a filter (104, 204, 304) so as to retain the precipitated degradation products in the filter, and discharging an outlet flow (2, 2a, 2b) of cleaned oil.

Abstract: The invention is directed to a process for the recovery or removal of one or more crystallizable compounds from an aqueous solution containing, apart from the said crystallizable compounds, one or more organic or inorganic scale- forming or scale-inducing materials having a lower solubility in water than the said crystallizable compounds, said process comprising subjecting the said solution to at least one eutectic freeze crystallization step with recovery of ice and said one or more crystallizable compounds in crystalline form, recycling at least part of the mother liquor formed in the said eutectic crystallization step and subjecting the said recycle to a treatment with seed crystals for said scale forming or scale inducing compounds, removing at least part of the solid material obtained in said treatment step and recycle of the aqueous liquid thus obtained to the eutectic freeze crystallization step or to the feed thereto.

Abstract: The present invention relates to a method for purification of produced water and to a system for carrying out the inventive method. Further, the invention relates to a purified produced water product obtainable according to the invention. A unique sequence of unit operations including the addition of dissolved calcium hydroxide and the subsequent precipitation thereof enable a particularly efficient removal of contaminating substances from produced water from the petrochemical industry.

Abstract: The present invention relates to an apparatus for separation of hydrocarbons from hydrocarbon-containing produced water, comprising; a separator tank, at least one inlet tube (22, 27), at least one branch means (6) distributing the produced water stream, at least one outlet nozzle (7) and at least one guide vane (8.1) mounted under each outlet nozzle and leading water over the next outlet nozzle; at least one outlet (12) in the bottom of the tank for cleaned water and at least one outlet (9, 35, 36) rejecting rising gas with adherent oil droplets, at least one shroud (39) is arranged entirely or partly along the inside of at least one guide vane (8.1) in an angle of 30° to 150° related to the at least one guide vane (8.1). Further the invention relates to a process for separation of hydrocarbons from hydrocarbon-containing produced water.

Abstract: A mining apparatus and method of its use are disclosed. The apparatus includes a heavy metals separating subsystem and a water recycling subsystem. The heavy metals separating subsystem includes one or more classifying screens positioned to receive raw mining material classify materials to a pre-determined size, a slurry tank receiving water and the classified materials, forming a slurry, and a heavy metals concentrating assembly configured to receive the slurry and separate heavy metals from the slurry. The water recycling subsystem is positioned to receive the tailings and separate the tailings into recyclable water and solid waste. The water recycling system is configured to route the recycled water into the heavy metals separating subsystem for reuse.

Abstract: Disclosed are zero liquid discharge (ZLD) processes that utilize naturally occurring or supplemental silicate in the water supply for removing magnesium and calcium hardness from aqueous alkaline streams in the form of a silica gel, thereby allowing separation of a low hardness supernant for recycling.

Abstract: Systems and methods for improving the quality of solids and liquids recovered at atmospheric pressure and temperature from a stillage stream generated as a by-product of an ethanol production process, the recovered solids having higher bio-available amino and fatty acids than evaporation-produced condensed solubles, the recovered liquids having less total solids and total suspended solids than evaporation-produced condensate. A static mixer includes an input for receiving the stillage stream combined with a GRAS anionic polymer, a cylindrical mixing chamber that controllably mixes the stillage stream and the polymer to generate wet flocculated solids and liquid co-product, and a discharge chute that outputs the wet flocculated solids and liquid co-products onto a moving, gravity filter belt having a membrane surface that separates the output from the static mixer into recovered liquids in the form of clarified, thin stillage and recovered solids in the form of dry flocculated solids.

Abstract: Provided herein is a method for reducing down-time in a recreational body of water having a water filtering system and water recirculation system after a potential release of Cryptospridium oocyst and/or Giardia cysts. Also described is a kit for practicing the method for reducing down-time in a recreational body of water that may have a potential release of Cryptospridium oocyst and/or Giardia cysts.

Abstract: A preparation method of octamethylenephosphonic acid terminated, PAMAM dendrimer and application thereof is provided, the dendrimer is prepared by modifying amino groups of 0 generation PAMAM dendrimer with methylene phosphonic acid, a constitutional formula thereof is: (CH2)n{N[CH2CH2CONHCH2CH2N(CH2PO3H2)2]2}2, wherein n is a positive integer between 2˜6. The octamethylenephosphonic acid terminated, PAMAM dendrimer has an excellent performance to inhibit scales of CaCO3, CaSO4 and Ca3(PO4)2, a very high calcium tolerance, and excellent dispersing performance. The octamethylenephosphonic acid terminated, PAMAM dendrimer is used as an antiscalant in industrial water treatment, and is suitable for the industrial water treatment of boiler, cooling, desalination, and oil production, etc., especially for the industrial water treatment under high calcium concentration.

Abstract: The method include (a) compressing the feed water at a low pressure; (b) filtering the feed water; (c) compressing the filtered water stream at a medium pressure; (d) supplying the filtered water stream, compressed at a medium pressure, in the liquid phase of an instant expansion tank; (e) in the tank, heating the stream of step (d) by mixing with the recycled stream (h); (f) compressing again at a high pressure the liquid fraction in the tank and supplying it to the heat exchanger inlet; (g) heating the liquid fraction in the exchanger while maintaining the liquid fraction in the liquid state; (h) recycling the fraction from the step (g) in the tank; and (i) expanding the stream of the step (h) in the expansion tank, generating by instant expansion the searched steam; and (j) separating the solid particles formed as a second blowdown containing water and the particles.

Abstract: A method of treating a wastewater is provided and can be used, for example, to treat a gas well hydrofracture wastewater. The method can involve precipitating barium as barium sulfate, precipitating calcium and strontium as calcium carbonate and strontium carbonate, precipitating magnesium hydroxide, and filtering out the metal compounds to form a recycle water. The recycle water produced from the method is also provided, as is a method for using the recycle water as a gas well hydrofracture water. In some embodiments, discharge water from a coal mine, and/or water from an abandoned coal mine, is used as a source of sulfate ions to precipitate barium as barium sulfate.

Abstract: The invention provides methods and compositions for a composition and/or a method for treating impurities in a circulating water system. The circulating water system impurities may be oversprayed paint in paint spray booth applications. The composition includes an aqueous solution of a cationized starch, a polybasic aluminum salt such as aluminum. chlorohydrate or polyaluminum chloride and a solution of a medium to high MW aqueous flocculant. The composition is particularly useful when added to recirculating scrubber water in paint spray booths for effectively treating both water based and solvent based paints.

Abstract: The invention disclosed and claimed herein relates to treatment of water contaminated with glycol to be recycled for further effective use of the cleaned water resulting therefrom, especially at airports. More specifically, this invention relates to improved techniques for efficiently and reliably generating continuous flows of cleaned water as well as a continuous flow of recyclable glycol water of controlled concentration.

Abstract: Apparatus 10 for separating a mixture of oil and water. The apparatus 10 comprises a cylindrical vessel 12, with a cylindrical divider 18 separating the vessel 12 into a central zone 24 and outer annular zone 22. An upper part of the divider 18 provides a weir to enable fluid in the central zone 24 to pass into the outer zone 22. A tangential inlet extends into the central zone 24 at a lower part of the vessel 12, with an outlet 36 at the upper end of the vessel 12 for oil and/or gas, and a water outlet 42 on the side of the vessel 12 a small distance above the bottom of the outer zone 22.

Abstract: The invention relates to a method for removing arsenic as scorodite from solutions that contain iron and arsenic. In accordance with the method, arsenic is first precipitated as ferric arsenate and subsequently processed hydrothermally into crystalline scorodite.

Abstract: Wastewater treatment methods and systems for removal of phosphorus (P) and nitrogen (N) from wastewater and for recovery of them as usable materials. Sufficient amount of dolomite lime and slaked dolomite lime is added into the wastewater to increase the pH of the wastewater to above 8.5 and to form P precipitates and to convert ammonium to ammonia in a precipitation-ammonia stripping reactor or a continuous flow precipitation reactor. The P precipitates are separated from the wastewater and recovered as usable solid material. The ammonia gas is absorbed and concentrated with acid solution in an ammonia absorption tower as usable liquid material.

Abstract: In a process for mine waters, a hardness-free, alkaline reagent is first added at least once to the mine water that is to be worked up, whereby metals are sedimented or precipitated out as hydroxides from the mine water that is to be worked up. The precipitated metal hydroxides are separated off and the remaining mine water is further treated by adding a hardness-forming precipitation reagent, whereby gypsum, in particular in the form of gypsum mud, is precipitated out from the then metal-free mine water that is to be worked up. Thus a sequential separation of the metals and the sulphate from the mine water that is to be worked up proceed via corresponding precipitation using respectively corresponding precipitation chemicals, wherein, in the gypsum precipitation following the metal precipitation, a metal-free gypsum mud is produced that is safe to landfill.

Abstract: Described herein are systems, methods, and apparatuses for aggregating microorganism in an aqueous suspension. In particular, are systems, methods, and apparatuses that apply an electrical field to an aqueous suspension comprising microorganisms as the aqueous suspension follows a flow path to cause aggregation of the microorganisms. The electrical field may be continuous or pulsed. In some embodiments, the flow path for the aqueous suspension may vary.

Abstract: Amine-aldehyde resins are disclosed for removing a wide variety of solids and/or ionic species from the liquids in which they are suspended and/or dissolved. These resins are especially useful as froth flotation depressants in the separation of bitumen from sand and/or clay or in the beneficiation of clay (e.g., kaolin clay) from an impure clay-containing ore. The resins are also useful for treating aqueous liquid suspensions to remove solid particulates, as well as for removing metallic ions in the purification of water.

Abstract: A continuous flow reactor, including a cylindrical coagulation crystallizer, a funnel type protective baffle for static settling, and a conical static settler. A lower end surface of the cylindrical coagulation crystallizer is connected with an upper end surface of the conical static settler, and the funnel type protective baffle for static settling is connected with an inner wall of the cylindrical coagulation crystallizer.

Abstract: The present disclosure relates to purge fluids, methods of using the purge fluids, and systems to be used for recycling the purge fluids. In some aspects, the purge fluid may be used to clean or purge an automated spray coating apparatus, such as a paint gun. The purge fluid may include a solvent and water. After the purge fluid is utilized for purging or cleaning certain system components, the purge fluid may be treated, subjected to a liquid-solid separation technique, and reused as a purge fluid.