57128 results about "Wastewater" patented technology

The invention is directed to methods, apparatuses, and systems for treatment of a liquid flow comprising addition of a chemical treatment at at least two locations along a side stream of a main flow of said liquid, in which the dosing by such additions is sufficient to treat the entire main flow upon return of the side stream to the main flow. Algorithms are utilized to control the additions at the locations of addition of chemical treatments. In a typical embodiment, one chemical addition is principally proportional to the flow rate of the liquid flow, and the other chemical addition is principally adjusted based on signals from a primary measuring device that measures a parameter in the flow after one or both chemical additions. The addition of chlorine dioxide as the chemical treatment, to disinfect wastewater, is discussed.

Disclosed is a microemulsifying metal-cutting-fluid composition, comprising base oil or oily agent, mixed alcohol-amine, boric acid, anionic surfactant, nonionic surfactant, antirust agent, copper alloy corrosion inhibitor, preservative, deionized water and the like. The invention has the advantages of excellent lubricity, cooling ability, cleaning ability and a long lifetime of metal cutting fluid, being suited to various metal processing technologies such as cutting, reaming, boring, grinding. Also, the wastewater is easy to treat.

A configurable robotic apparatus and system is disclosed that is remotely operable in difficult, hazardous, subterranean, or submerged environs. The apparatus merges diverse disciplines to effect inspecting, cleaning, treating, repairing or otherwise maintaining a wide variety of materials and conditions. Deployment environments include power, municipal water and wastewater plants, surface and submerged infrastructures (pipes, lines, conduits), and like industrial applications. Extensible and articulating modules, configurable through standardized and interchangeable connectors, provide unique flexibility, scalability and versatility to accommodate a wide range of shapes, surfaces, and obstacles. In-module intelligence and instrumentation eliminates the need for constant manual control through autonomous operation capable of simultaneous optimization and synchronization of multiple work processes, but manual override and remote control is provided to overcome unanticipated limitations. Benefits include improved efficiency, cost, and safety over prior art. High-performance, one-pass operation reduces facility downtime while incorporating environmentally responsible debris recovery.

Method for producing an hydrophobically associative polymer is provided which is characterized by forming a monomer solution comprising a surfactant, at least one hydrophobic ethylenically unsaturated monomer, at least one hydrophilic monomer selected from nonionic ethylenically monomers, cationic ethylenically unsaturated monomers, anionic ethylenically unsaturated monomers or mixtures thereof, and water; forming a salt solution comprising a multivalent salt and water; mixing the monomer solution and salt solution to form a mixed solution; and charging the mixed solution with an initiator, thereby polymerizing the monomers to form the hydrophobically associative polymer in a dispersion. Aqueous dispersion containing the hydrophobically associative polymer formed by the method. The aqueous dispersion containing the hydrophobically associative polymer may be used in a paint formulation, in a mobility control fluid useful in enhanced oil recovery, in a secondary or tertiary oil recovery system, in an enhanced oil recovery method, in a cementious composition, in an oil well drilling mud formulation, in a fracturing fluid formulation, in a wastewater treatment system, or in a dewatering sludge system.

An alternative cover for landfill may be formed from a slurry mixture of water, cementitious binder, adhesion enhancing admixture and fiber. These constituents may be mixed and applied to cover landfilled wastes, granular material piles or for soil erosion control. The cover will harden to minimize water infiltration, wind blown dust, odor and affinity to birds, flies and other insects. The water may include tap water, landfill leachate and wastewater. The binder may include Portland cement, blended cement, cement kiln dust, class C fly ash, and / or calcium sulphate hemihydrate. The adhesion enhancing admixture includes water-dispersible polymers. The fibers may comprise shredded paper or wood or plastic fibers.

The invention discloses a resource utilization process of organic hazardous waste. The resource utilization process includes the steps that classified storage and treatment of solid-phase, solid-liquid mixing and liquid-phase organic hazardous waste are carried out; solid-phase crushing, grinding and screening treatment is carried out; solid-liquid mixing is carried out after solid-liquid separation, solid-phase grinding and liquid-phase sedimentation separation treatment is carried out; direct liquid-phase sedimentation is carried out; then after solid-liquid mixing, a fluxing agent is addedfor stirring, a stabilizer and a dispersing agent are added for slurrying, the slurry is fed into a gasifier, and the obtained gas is used as fuel gas after being subjected to cooling, dedusting, spraying and desulfuration; slag tapping and vitrification slag discharge are carried out; and waste water is recycled. The resource utilization process has the beneficial effects that solid phase, solid-liquid mixing and liquid-phase comprehensive treatment, harmless treatment and slag discharge are realized.

The invention discloses a processing method of sewage in oil fields by using a film evaporator. The processing method is characterized by comprising following technology steps: filtering sewage with a filtering device, removing oil by the air-floating method, separating and condensing sewage by the thin-film evaporating method, and processing residual slag, is mainly used for evaporating processing of sewage in oil fields, and is capable of continuously processing oil-containing sewage. The liquid phase and solid phase after being processed can be discharged without causing pollution to the environment.

A method and apparatus creates gas-enriched fluid that is used to treat wastewater. In one embodiment, the wastewater is withdrawn from a supply of wastewater to be treated, and the wastewater is delivered in an atomized manner to a vessel pressurized with gas to form gas-enriched wastewater. The gas-enriched wastewater is then delivered to the supply of wastewater to be treated.

A system uses thermal solar energy coupled with microwaves and plasma for producing carbon monoxide (CO) and dihydrogen (H2) from carbonated compounds (biomass, domestic waste, sludge from waste water, fossil coal), wherein the obtained gaseous mixture yields, amongst others, hydrocarbon fuels (olefins, paraffin), esters, and alcohols via a Fischer-Tropsch synthesis. In a first step the carbonated compounds are roasted and pyrolized to produce char and dry coal, and a mixture of superheated gases containing CO2, steam, tars and non-condensable volatile materials. The method includes in a second step, and from the pyrolyis products (char or coal, gas mixture), generating a syngas substantially containing a mixture of carbon monoxide and dihydrogen, the mixture being used in Fischer-Tropsch synthesis units. After the Fischer-Tropsch step, the synthesis products are separated in a distillation column after heating in solar furnaces of mixed furnaces (solar / microwave).

An apparatus and method for the purification of contaminated water whereby the contamination level of the wastewater is automatically monitored and treatment self-adjusted and continued until the desired level of purification is reached. Specifically, if upon treatment a pre-set purification level is not obtained a water recycle control means completely precludes the uptake of additional contaminated water and recycles wastewater within the apparatus until the desired level of purification is obtained. The present invention more particularly pertains to an efficient, turn key, economical, movable, automatic and compact apparatus and method for treating a fluid with ozone comprising multiple pressurized contact columns which are arranged in a hybrid parallel and series column configuration, which utilizes a unique water recycle control system and piping arrangement to improve the efficiency of the mass transfer of ozone into the water and increase its solubility by increasing the contact time between the water phase and the gas phase. The apparatus and method of the present invention has the further advantage that it requires minimal installation and may be used to fulfill the clean and safe water needs of any hotel, resort, restaurant, hospital, light industry, commercial business, apartment complex or small city.

The invention discloses a method for preparing magnetic biological carbon adsorbing material and the usage thereof. The method comprises the steps: 1) drying and crushing waste biomass, and sieving by20-100 meshes; 2) putting the sieved biomass into 0.1-0.5mol / L of iron salt solution with the weight percent of the biomass being 1-10% of the total quantity; under stirring, dripping 3-6mol / L of NaOH solution until the pH value of the solution is 9-10; 3) filtering, drying and compacting the solid precipitate, and then limiting oxygen carbonizing for 1-5h at the temperature of 100-700 DEG C, thus obtaining the magnetic biological carbon adsorbing material; 4) putting the magnetic biological carbon adsorbing material into waste water, and simultaneously removing organic pollutant and phosphate radical in the waste water. The method realizes synchronization of preparation of the adsorbing material and the process of magnetization, and is simple in preparation process, rich in the source ofthe biomass material and low in cost; furthermore, the prepared magnetic adsorbent is covered by biological carbon or embedded with magnetic nano Fe3O4 granules, has special structure and stable existence, can effectively remove the organic pollutant and phosphate in the waste water, and is easy for magnetic separation.

The invention discloses a method for preparing a herbal biological fiber and biological paper pulp, and the used microbial composite agent and a preparation method thereof. The biological fiber is prepared through pretreatment of a herbal raw material, biological degumming fermentation, and subsequent mechanical treatment of a fermentation product. The composite agent comprises degumming bacteria, nutrition bacteria and decolorizing bacteria, and various strains are synergistic without antagonistic reaction. In the method for preparing the biological fiber and the biological paper pulp, a chemical additive is not needed at all, but the high-cellulose and hemicellulose biological fiber and the biological paper pulp can be industrially produced; decolorization is complete, and the produced biological fiber and biological paper pulp have white color; a bleaching process is avoided, so investment in decolorizing production equipment is saved, and fiber extracting and pulping investment cost can be effectively reduced; in addition, waste gas and waste water are not generated in the fiber extracting and pulping process, inorganic pollutants are not generated, waste water and waste residues produced in each process step can be produced and converted into a biological fertilizer, and water is recycled.

Provided is a method for purifying a biodiesel fuel while completely preventing or greatly reducing generation of waste water. The present invention relates to a method for purifying a biodiesel fuel characterized by applying an electric field to or heating a crude biodiesel fuel and a method for purifying a biodiesel fuel characterized by adding water (preferably containing a demulsifier such as an inorganic calcium salt or a magnesium salt) to a crude biodiesel fuel to form W / O emulsion, and breaking the emulsion by application of an electric field or heating, etc.

A composition is provided that includes particulates from wood, chaff, hulls, crop compost, biochar, or waste residue, wood or crop ash and biochar, and a nitrogen source from waste residue from gasification processes, food processing waste water or other residual by-products of forest, aquatic, food or feed processing. Ideally, all of the components are environmentally friendly, from natural products, and free of manufactured chemicals.

The invention provides a method for resourceful treatment of restaurant garbage, which is characterized in that the restaurant garbage is completely degraded after treatment with the working procedures of oil separating, preliminary selecting, mechanical crushing, hydraulic pulping, slurry blending, anaerobic fermentation and oxygen-control composting, finally the marsh gas is decomposed via anaerobic digestion and is utilized as energy after desulfurization treatment; the high-quality organic manure is produced from the biogas residues via oxygen-control composting; the separated oil can be recycled as the regenerated industrial raw oil; the wastewater generated in the treatment process can be recycled, and finally the redundant wastewater reaching the standard is discharged after biochemical treatment; and the odor generated by the garbage in the treatment process is directly discharged after reaching the standard via biofiltration treatment, thus the restaurant garbage can be transformed into the clean regenerated energy of electric power and the pollution-free organic manure to completely realize resourceful treatment of restaurant garbage. The resourceful treatment of restaurant garbage has the advantages of innocuity, no peculiar smell, no secondary pollution during the treatment process and realization of harmless and resourceful treatment of restaurant garbage.

The invention discloses recovery process of honeycomb type selective catalytic reduction (SCR) waste catalyst. The process includes the following steps: a, preprocessing the SCR waste catalyst and leaching at the high temperature and under high pressure; b, adding hydrochloric acid into leaching liquid, adjusting pH, and removing impurities; c, adding hydrochloric acid into the leaching liquid, reacting, calcining and preparing rutile titanium dioxide; d, preparing ammonium paratungstate; e, preparing ammonium metavanadate; and f, recycling and treating waste water. Main products of ammonium paratungstate, ammonium metavanadate and rutile titanium dioxide obtained in the process are high in purity and recovery rate. By-products of silicon magnesium slags, salty mud, high-concentration sodium chloride liquid and barium sulfate dregs are high-purity harmless useful goods. The process is free of harmful secondary pollutant emission, environment-friendly and capable of circulating, has high economical and social benefit and is practicable.

The invention discloses a desulfurization waste water zero discharging process. The process comprises a chemical dosing softening process and a microfiltration membrane treatment process; after incoming water is subjected to two-stage softening, nanofiltration and reverse osmosis separation are performed; sodium sulfate decahydrate with the purity of more than 99% is separated out by utilizing freezing crystallization; a reverse osmosis concentrated water regeneration sodium ion exchange device is utilized; sodium chloride with the purity of more than 98% is separated out by utilizing evaporative crystallization; solids are comprehensively utilized, and no liquid is discharged outside. The invention further provides a desulfurization waste water zero discharging system. According to the desulfurization waste water zero discharging process and the system, water in desulfurization waste water can be separated to be reutilized as domestic and industrial usable water, and other impurities in the desulfurization waste water are separated in solid form, so that pollutants harmful to the natural environment do not generate, and the problem that the desulfurization waste water pollutes the environment can be completely solved.

The invention discloses a novel method for extracting and converting a substance containing vanadium into high-purity vanadium pentoxide by chlorination. The high-purity vanadium pentoxide process comprises batching, chlorination, dedusting, condensation, rectification, hydrolysis, filtering, drying and postprocessing. Raw materials comprise the substance containing vanadium and a carbon elementary substance and the weight ratio of the substance containing vanadium to the carbon elementary substance is 1: (0.05-0.25). The raw materials are evenly mixed, dried and put in a reactor and the high-purity vanadium pentoxide is obtained through successive chlorination, hydrolysis, postprocessing and the like. The novel method for producing high-purity vanadium pentoxide instead of a traditional method reduces industrial harmful waste water produced during a traditional hydrometallurgy process, and cyclic utilization of chlorine is achieved after the chlorine is processed. The whole production process is easy in process and basically free of produced wastes, and has certain economic benefit and social benefit. The purity of the vanadium pentoxide powder obtained by the method is 99.5%-99.99%.

The composite phosphate-free scale inhibiting corrosion inhibitor for treating circular cooling water consists of scale inhibitor and corrosion inhibitor. The scale inhibitor consists of one or several of PASP, PVA, oxidized starch, polyacrylic acid, acrylic acid / acrylate copolymer and acrylic acid / acrylate copolymer with sulfo radical. The corrosion inhibitor consists of one or several of sodium salt / potassium salt / ammonium salt of organic salt, sodium / potassium / ammonium borate, nitrous organic matter, soluble molybdenate, soluble tungstate, soluble nitrate, soluble nitrite and soluble zinc salt. The composite scale inhibiting corrosion inhibitor has excellent scale inhibiting and corrosion inhibiting performance, is environment friendly, and is especially the treatment of hard circulation water with high calcium and high alkali content.

The invention relates to a method for realizing desulfuration, denitration and demercuration of boiler smoke synchronously, wherein it comprises feeding smoke into cycle fluidize bed reactor, and injecting oxygen-enriched active absorber; said absorber is formed by coal ash at 20-70, lime hydrate at 27-80, additive at 0.5- 3 as kalii permangana KMnO4, sodium chlorite NaClO2, natrii chloridum NaCl, calcium hypochlorite Ca(ClO)2 or acetic hyctro peroxide CH3COOH. The invention's desulfuration efficiency can reach 90%, the denitration efficiency can reach 60%, and the demercuration can reach 50%, with low cost and non pollution.

The invention discloses a method and device for utilizing sewage containing ammonia and sodium. The method comprises the steps of deamination reaction, denitrification reaction, gas-liquid separation, triple-effect multistage evaporation, evaprative crystallization and freezing crystallization, electrodialysis and sodium filteration membrane, and concentration of reverse osmosis membrane, so that distilled water and membrane deion pure water are recovered, and the resource utilization of sole sodium chloride and sodium sulfate is realized.

A method or process for treating wastewater containing high organics, silica, boron, hardness, and suspended and dissolved solids. The method includes degasifying the wastewater for the removal of dissolved gases and thereafter chemically softening the wastewater. After the chemical softening step, the wastewater is directed through a media filter or membrane which removes additional solids and precipitants. Thereafter the wastewater is directed through a sodium ion exchange that further softens the wastewater. The effluent from the ion exchange is directed through a cartridge filter and the effluent from the cartridge filter is directed through one or more reverse osmosis units. At a selected phase of the process, prior to the wastewater reaching the reverse osmosis unit or units, the pH of the wastewater is raised and maintained such that the pH of the wastewater reaching a reverse osmosis unit is at a pH greater than 10.5.

The invention relates to a microwave photocatalytic wastewater degradation device allowing greatly expanding single pot treating capacity and belongs to the technical field of wastewater treatment. The existing microwave photocatalytic degradation technology aiming at industrial wastewater containing organic pollutants has the problems of microwave energy waste and small practical single pot wastewater treating capacity; in addition, in the prior art, the phenomenon of scale deposit can occur after the outer side surface of a quartz tube for shielding an electrodeless ultraviolet lamp is soaked in wastewater for a long time, a scale layer formed by the scale deposit blocks the permeability of light and also affects the wastewater treatment efficiency of the existing device; and the microwave photocatalytic wastewater degradation device aims at solving all the problems. The device adopts the structure that the electrodeless ultraviolet lamp is arranged in a wire mesh cage-shaped non-light tight microwave restraint made of metal material, and leads microwave into the restraint to restrain the microwave, so that microwave is free from inconducive dissipation, the design volume of a reactor is allowed to be greatly expanded based on the structure, and further the single pot wastewater treating capacity of the reactor is greatly enhanced. The device instantaneously eliminates the scale layer through high-frequency ultrasonic wave.

The invention discloses a method for preparing sodium dihydrogen phosphate by utilizing phosphoric acid by wet process. The method comprises the steps of carrying out reaction on carbamide and the phosphoric acid by the wet process to obtain intermediate, and then carrying out a reaction on the intermediate and sodium hydroxide to obtain the sodium dihydrogen phosphate product. The method is short in process route, low in energy consumption, stable in product quality, low in production cost, convenient to operate and safe in production; the by-product slurry can be completely recycled; the whole production process is environment-friendly, clean and free from pollution as well as emission of waste gas, waste water and waste residue; therefore, the method responses to the policy of energy conservation and emission reduction as well as clean production, and solves the problems of complicated technology, unstable product quality, high energy consumption, environmental pollution and the like in the prior art; the obtained sodium dihydrogen phosphate product has the purity of more than or equal to 98%.

A system and method of treating wastewater from an animal confinement operation. The system including at least a first lagoon receiving water from the confinement operation. The system further including a free surface water wetland, a subsurface flow wetland and a vertical flow recirculating media filter. The first artificial wetland including a pipe such that water from the lagoon flows into the first artificial wetland through an inlet of the pipe and is contained within the wetland. The first wetland further including a plurality of wetland plants. A second subsurface flow wetland and a vertical flow recirculating media filter on top of the subsurface flow wetland and wetland plants contained within a first pea gravel bed on top of a coarse gravel bed of the subsurface flow media filter such that water from the lagoon is received by the first wetland. A recirculation pump receiving water from the horizontal coarse gravel bed and the pump recirculating water to the wetland plants of the vertical flow recirculation media filter such that ammonia in the water is converted to nitrate and water as it falls vertically through roots of the wetland plants and the nitrate is converted to nitrogen and water the water flows horizontally through the subsurface flow wetland.