37results about How to "Strong removal rate" patented technology

The invention belongs to the field of water treatment material preparation and in particular relates to a preparation method and application of a silane coupling agent modified magnetic halloysite material. The method is characterized by taking halloysite as a template and adhering Fe3O4 particles to the surface of a halloysite nanotube by an in-situ synthesis method; mixing a silane coupling agent with halloysite / Fe3O4 and grafting the silane coupling agent onto the surface of halloysite through reaction. The method has the beneficial effects that the raw materials are cheap and accessible; a functional group on the surface of the silane coupling agent modified magnetic halloysite material obtained by the method is bonded with a matrix via chemical bonds, so the material has strong bonding force; the material has high thermal stability, is convenient and fast to separate and recover, can be recycled multiple times, can serve as an adsorbent for eliminating heavy metal pollution of printing and dyeing wastewater and enables that the treated printing and dyeing wastewater can reach the national wastewater discharge standards.

The invention relates to a preparation method of a honeycomb ceramic net through Lu and N co-doped TiO2 photocatalysis. The honeycomb ceramic net is regarded as a first carrier, and activity AL2O3 coating with specific surface area of 300 to 400m2 / g and doping with lanthanum, cerium and iron element is loaded on the first carrier and regarded as a second carrier; the mass ratio of AL2O3 to La to Ce to Fe is (100 to 110) to (90 to 115) to (50 to 70) to (5 to 15); the TiO2 photocatalyst films of rare earth element Lu and non-metallic element N are loaded on the second carrier; the mass ratio of Lu to N to TiO2 in the TiO2 photocatalyst film is (0.01 to 0.16) to (0.40 to 1.88) to (97.94 to 99.54). The removal rate of the honeycomb ceramic net prepared through photocatalysis to formaldehyde and toluene in the air is 98.7% and 92.2% respectively, and the removal rate to formaldehyde and toluene in the air is improved by 2.0 times and 1.9 time respectively compared with the application of the TiO2 photocatalyst film only.

The invention discloses an application of straw biomass charcoal in processing electroplating wastewater. The straw biomass charcoal is prepared by anaerobic pyrolysis of peanut straw, soybean straw and rape straw obtained after harvesting at the temperature of 400-500 DEG C, wherein, the added proportion of the straw biomass charcoal is 12-32 g in per liter of electroplating wastewater. The application of the straw biomass charcoal in simultaneously removing acid and heavy metal copper from the electroplating wastewater comprises the following steps: mixing the straw biomass charcoal sieved with 60-mesh sieve with acidic waste water in a reaction tank, continuously stirring for 2 h, standing for 8 h, stirring again for 0.5 h, standing for 1.5 h, and then separating biomass charcoal from the mixed liquor through a sand filtration device, discharging the clear liquid, drying the biomass charcoal obtained after processing waste water, and carrying out incineration. The method has the advantages of low price, high efficiency, and no generation of secondary pollution.

The invention relates to an inclined helical photocatalysis compound filling material for micro pollution raw material pretreatment, which consists of polypropylene and nanometer TiO2, wherein the mass percentage of nanometer TiO2 is 8 percent to 10 percent. The invention also relates to a preparation method of the photocatalysis compound filling material, which comprises the following steps that: TiO2 is pretreated through titanate coupling agents; and the polypropylene and the pretreated TiO2 are uniformly mixed and are co-extruded and formed on a double-screw extruding machine. The photocatalysis compound filling material has the characteristics that the flowability is high, the specific surface area is large, the TiO2 combination degree is high, the photocatalysis efficiency is higher, the use period is long, the blockage is avoided, the operation is simple and convenient, and the like.

The invention discloses VOCs treatment process and equipment using heterogeneous catalytic oxidation. The VOCs treatment process is characterized in that O3, H2O2, UV and hydraulic cavitation effects are integrated to allow the oxidant and the oxidation manner to have a synergic effect so as to generate a large amount of hydroxyl radicals to achieve the oxidation effect. The VOCs treatment process and equipment has the advantages that the O3 / H2O2 / UV / hydraulic cavitation technologies are integrated to generate a large amount of hydroxyl radicals, and the oxidation effect is increased greatly; the equipment is operated under normal temperature and normal pressure and is simple and safe to operate and capable of synchronously desulfurizing, removing heavy metals and removing waste gas components such as dioxin.

The invention relates to treatment methods for electroplating wastewater and particularly relates to a method for treating electroplating chromium-containing wastewater. The method comprises the following steps: (1) adding a reducer into the chromium-containing wastewater; (2) carrying out continuous stirring, and adding lime or sodium hydroxide into the mixture; and (3) then, carrying out standing precipitation for 10 to 30 minutes, carrying out filtration, adjusting the pH of the filtrate to be neutral, and then, carrying out draining, wherein the reducer contains the ingredients in percentage by weight: 20% to 80% of sodium thiosulfate, 2% to 20% of ascorbic acid, 2% to 20% of oxalic acid, 2% to 10% of glucose, 2% to 20% of starch and 10% to 60% of ferrous sulfate. By adopting the method disclosed by the invention, sexavalent chromium is reduced to trivalent chromium through electron acceptance, a linkage reduction process is formed in the participation of ferric ions, and the sexavalent chromium is effectively reduced in a weak acid medium, so that energy is saved, the processing steps are simple, and the popularization prospect is good.

The invention relates to a wet-flue-gas desulfurization washing water treatment system and method of ships and belongs to the technical field of wastewater treatment. The system comprises an iron carbon micro-electrolysis flocculation reactor, a vertical flow gas tank, a first sand filter and an adsorbent adsorber; the iron carbon micro-electrolysis flocculation reactor is used for sequentially performing aeration, micro-electrolysis oxidation reaction of an iron carbon area and flocculation reaction of a microvortex flocculation area from bottom to top; the vertical flow gas tank takes low-temperature seawater as dissolved-gas water used for removing most of suspensions and oil; the first sand filter is used for filtering and intercepting the suspensions from top to bottom; the adsorbent adsorber is used for performing adsorption and the like from bottom to top. Removal of COD, heavy metal ions, the suspensions, turbidity, polycyclic aromatic hydrocarbon, and oil in wet-flue-gas desulfurization washing water of the ships is completed, washing-water effluent standard regulated by IMO (international maritime organization) is conformed, and the system and method has the advantages of small space occupation and high integration and automation.

The invention relates to a method for treating oil refining wastewater. The method comprises the following steps: oil removal, air flotation, a first level biochemical treatment, a second level biochemical treatment, a third level biochemical treatment, and precipitation. A first level biochemical treatment unit is provided with a heat exchanger to reduce temperature of wastewater; a second level biochemical treatment unit is used for nitrogen removal by denitrification; a third level biochemical treatment unit conducts nitration of ammonia nitrogen and removal of pollutants such as residual organic compounds; and a mixed liquor from the third level biochemical treatment unit and the sludge from a precipitation treatment unit flow back to the second level biochemical treatment unit. The invention mainly solves the problem that a refining wastewater treatment facility has low efficiency of ammonia nitrogen removal or even no effect on ammonia nitrogen removal. The process has the advantages of high efficiency of ammonia nitrogen removal and nitrogen removal, high treatment efficiency, strong shock resistance, stable and standard achieved quality of outlet water, and low investment and operation cost.

The invention relates to a high-speed milling cutter handle type electric spindle which comprises a main body mechanism, a rotor mechanism, a stator mechanism, a bearing mechanism, a broach mechanismand an air cylinder mechanism. The bearing mechanism comprises a front bearing assembly and a back bearing assembly arranged at two ends of the rotor mechanism; the front bearing assembly is providedwith an inner backing ring and an outer backing ring; a backing ring and an adjusting spring located in the same axis are arranged on the upper side and the lower side of the back bearing assembly; and the broach mechanism is detachably arranged on the rotor mechanism. The high-speed milling cutter handle type electric spindle provided by the invention has the beneficial effect that the electric spindle is provided with a position proximity switch connected with a programable logic controller (PLC) control center, so that a function on intelligently monitoring and automatically changing a cutter is realized. With an innovative self-designed cutter handle holding mechanism, the structural strength and the bearing surface are greatly increased, and the cutter holding force, the radial cutting rigidity and the loading force are further greatly improved, so that the high metal removal rate is achieved; and multi-process integrated processing of workpieces can be realized through a machinetool cutter rest, and a power assisting machine tool equipment manufacturer realizes high-intelligent automatic and integrated product functions.

The invention relates to a dedusting and deep purification apparatus with high efficiency and low energy consumption for flue gas in a metallurgical slag treatment process. The apparatus comprises a tower for spraying, sprinkling and washing and a downstream type gas-liquid tower for deep purification, dehydration and demisting with foam suspension and pneumatic swirling flow; an outlet at the upper end of the tower for spraying, sprinkling and washing and an inlet at the upper end of the downstream type gas-liquid tower for deep purification, dehydration and demisting with foam suspension and pneumatic swirling flow are connected by a connection flue; a sidewall at the lower end of the tower for spraying, sprinkling and washing is provided with a flue gas inlet pipeline; a sidewall of the downstream type gas-liquid tower for deep purification, dehydration and demisting with foam suspension and pneumatic swirling flow is provided with a flue gas outlet pipeline; the tower for spraying, sprinkling and washing employs a wet type multilayer gas-liquid countercurrent contact mode, and the downstream type gas-liquid tower for deep purification, dehydration and demisting with foam suspension and pneumatic swirling flow employs a gas-liquid current contact mode. The dedusting and deep purification apparatus with high efficiency and low energy consumption for flue gas in the metallurgical slag treatment process is adapted to characteristics of high temperature, high moisture and high viscosity flue gas, and realizes ultra-low flue dust emission concentration in a low energy consumption condition, in order to satisfy more strict environmental protection emission requirements of pollution treatment.

The invention relates to a heavy greasy dirt mechanical part cleaning agent and a preparation method thereof, belonging to the technical field of industrial cleaning agents. The heavy greasy dirt mechanical part cleaning agent comprises the following components in parts by weight: 2-8 parts of castor oil, 5-10 parts of glycerin monostearate, 10-16 parts of polyacrylamide, 10-20 parts of nano silica powder, 5-10 parts of glycerin, 8-16 parts of polydimethylsiloxane, 5-10 parts of potassium hydrogen tartrate, 10-16 parts of sodium alginate, 20-38 parts of ethylene glycol butyl ether and 20-28 parts of ethanol. The cleaning agent disclosed by the invention has high removal rate on oil dirt and impurities deposited on mechanical equipment; the cleaning agent disclosed by the invention is stable in properties, and secondary environmental pollution is avoided; and moreover, the preparation method is simple, feasible and convenient to implement.

The invention discloses a treatment process for chromium-containing sewage. The treatment process comprises the following steps: sewage collection, coagulation and sedimentation, acidification treatment, neutralization and sedimentation, evaporation treatment, biological treatment as well as washing and filtration. The treatment process is high in sewage chromium removal rate, suitable for treating various chromium-containing sewage, high in recycling rate, strong in purification treatment capacity and capable of realizing centralized treatment, increasing the chromium removal rate and improving the COD degradation effect.

The invention discloses a multistage anaerobic reaction device which comprises a first stage reaction tank, a second stage reaction tank and a third stage reaction tank which are arranged in sequence and connected end to end, wherein the first stage reaction tank is provided with a stirring rank, the second stage reaction tank is provided with a stirring tank and / or a filler tank and the third stage reaction tank is provided with a filler tank; or the second stage reaction tank is provided with more than two stirring tanks and / or filler tanks connected end to end in series; a clapboard is arranged above each stirring tank and a stirring pump is arranged below the clapboard; and a clapboard is arranged in each filler tank and filler is arranged on the clapboard. By adopting the device disclosed by the invention, the gas producing efficiency of methane can be effectively improved.

The invention discloses a pervious concrete specialized additive for water purification. The pervious concrete specialized additive is prepared from, by weight, 20-22% of acrylic acid (AA), 21-22% of methacrylic acid (MAS), 10-12% of polyoxyethylene propylene ester (PA), 12-13% of ammonium persulfate (APS), 10-13% of carbon black, 8-12% of activated carbon and 10-15% of lignocellulose. The pervious concrete specialized additive has certain compressive strength, and can bear shear and pressure stress of road vehicles, pedestrians and the like on the road surface; certain pervious and breathable properties are achieved, moisture can be rapidly infiltrated into underground in rainy days without water accumulating and reflecting; in addition, sewage infiltrated into underground can be purified, requirements in building a 'sponge city' of natural accumulation, natural infiltration and natural purification are greatly conformed, water resources are saved, and urban ecological environment is protected and improved; therefore, a social effect and ecological effect are generated with the application of the pervious concrete specialized additive.

The invention provides a preparation method of a polymer film for treating high-salt wastewater. The method comprises the following steps: I preparation of a fluorine-containing piperazine amide polycondensate; II modification of chitosan; III surface modification of graphene oxide; IV preparation of the film. The invention also discloses a polymer film for treating high-salt wastewater prepared according to the preparation method. The preparation method of the polymer film for treating the high-salt wastewater disclosed by the invention is simple and easy, the dependence on equipment is not high, the demanding on the reaction conditions is not strict, the raw materials are easy to obtain, the price is low, and the product is suitable for large-scale production. The prepared polymer film for treating the high-salt wastewater has the advantages of stable performance, large water flux, high salt removal rate, excellent mechanical properties, and strong corrosion and stain resistance.

The invention provides a core-shell catalyst for removing organic sulfur as well as a preparation method and application of the core-shell catalyst, and belongs to the technical field of air pollution control. An MOFs material is used as a shell precursor, a COFs material is used as an inner core precursor, an inner core material is prepared through electrostatic spinning, then MOFs are loaded on the surface of the inner core material, and the core-shell catalyst is prepared through roasting. The COFs core can provide abundant surface loading sites, and a microporous spongy carbon structure with high mechanical strength is formed after roasting and is used as a core skeleton; a metal oxide-hydroxyl functional group coating layer formed by roasting the MOFs material plays roles in chemical adsorption and catalytic hydrolysis, and meanwhile, a hydroxyl functional group also plays a role in adsorbing organic sulfur and then transferring the organic sulfur to a metal active center. Therefore, the core-shell catalyst prepared by the preparation method disclosed by the invention has a rich pore structure, a high specific surface area, relatively strong adsorption and catalysis capabilities and an excellent organic sulfur removal effect.

The invention discloses a chemical synthesis pharmaceutical wastewater treatment method, and belongs to the technical field of wastewater treatment environmental protection. The treatment method is a combined process of a plurality of units, and mainly comprises a catalytic oxidation unit, a biodegradability improvement unit, a biodegradation unit, a biodegradability re-improvement unit and a biological advanced treatment unit. The method is reasonable in process combination, low in energy consumption, high in efficiency, stable in operation effect and suitable for treating wastewater generated in the complete chemical synthesis pharmaceutical process and the semi-chemical synthesis pharmaceutical process.

The invention discloses a heavy metal sewage treatment method based on magnetic ferroferric oxide nano-particles, and belongs to the technical field of sewage treatment. The method comprises the specific steps that dibutyl ammonium dithiophosphate is added into heavy metal sewage, and standing is performed after stirring is performed; then, after standing is performed, a clear solution is filtered, zeolite is added, microwave oscillation is performed under the room temperature, and secondary standing is performed; glucose, lecithin, sodium oleate, kieselguhr and absolute ethyl alcohol are mixed and oscillated to be uniform; then, after second-time standing is performed, the clear solution is added into the mixed solution, a fluid medium and magnetotactic bacteria are added and oscillated and mixed to be uniform; the oscillated mixed solution is centrifuged and separated, a supernatant is sampled to be filtered, and finally the adsorption process is completed. The method is simple in treatment process, can treat sewage with the low metal ion concentration, and is not high in operation cost and raw material cost, good in heavy metal ion adsorption effect and high in selectivity, andthe removal rate for Cu2+, Pb2+ and Cd2+ can reach up to 99%.

The invention discloses a deicing device based on a loading machine platform. The deicing device comprises a hollow structure and a shell, wherein an opening is formed in the bottom part of the shell;a connecting seat which is connected with a loading machine is arranged at one side of the shell; supporting elements are arranged on two ends of the shell; the supporting elements are arranged far away from the connecting seat; each supporting element is rotationally provided with a supporting roller; the shell is internally provided with an eccentric ice vibrating mechanism driven by a first power device and a milling and ice breaking mechanism driven by a second power device; the eccentric ice vibrating mechanism is arranged far away from the connecting seat; the milling and ice breaking mechanism stretches to the outer part of the shell. By adopting the deicing device disclosed by the invention, mechanical deicing operation is realized, the adaptability to various road conditions is strong, the labor intensity of workers is reduced, the efficiency of deicing work is increased, and meanwhile, the problems of environment pollution and influence to plants due to using of a chemical agent are avoided; in addition, the deicing device is simple in structure and high in practicability, the cleaning ratio of an ice surface is high, the outgoing safety is effectively ensured, and a good market prospect is obtained.

The invention relates to a reinforced denitrification and dephosphorization circulation type biological membrane system for domestic sewage treatment. The system comprises a denitrification quadruplemechanism, a dephosphorization double mechanism and a backflow mechanism which are in communication connection with a programmable controller system separately; the denitrification quadruple mechanismcomprises a pre-denitrification tank, a fixed filler anoxic tank, a carrier flow aerobic tank and a fixed filter bed tank; the dephosphorization double mechanism comprises a sludge tank and a sedimentation tank; the backflow mechanism comprises a sludge backflow mechanism and a nitrification liquid backflow mechanism. A sludge mixed solution at he bottom of the sedimentation tank is recycled to the pre-denitrification tank and the sludge tank through the sludge backflow mechanism, and nitrification liquid flowing out of the fixed filter bed tank is recycled to the fixed filler anoxic tank through the nitrification liquid backflow mechanism. Therefore, the quadruple reinforced denitrification function and the double reinforced dephosphorization function are used, and it can be stably guaranteed that the nitrogen and phosphorus removal rate is 90% or above; the circulation type biological membrane system is also used, and additional activated sludge, a carbon source and a pH adjusting solution are not needed, so that the problems of complex operation, high cost, high energy consumption and the like in the prior art are solved.

The invention discloses a sewage treatment system using a permeable membrane technology. The system comprises a grid tank, a sewage adjusting tank, a Fenton reaction tank, an aeration biological filter tank device, a membrane bioreactor and a reverse osmosis membrane tank sequentially connected through a pipeline, wherein the sewage adjusting tank comprises a water collection tank; a water-in pipe, a coagulant pipe and a sewage pumping pipe are arranged on the water collection tank; a coagulative precipitation tank is arranged in the water collection tank, and permeable walls are placed on three sides; a mesh wall is arranged in the coagulative precipitation tank; the aeration biological filter tank device comprises a filter tank body and a back flushing tank; a gas-out pipe is arranged at the top end of the back flushing tank, and the side is connected with a gas-in pipe; a water level inductor is arranged on the inner wall of the back flushing tank; an upper-layer filter body and a lower-layer filter body are arranged in the filter tank body; a gas-out disc is arranged between the filter bodies; a filter layer impeller is arranged in the filter body; the lower end of the filter body is connected with a backwashing impeller; and a hair brush is arranged on the backwashing impeller. The system disclosed by the invention is mainly used for performing thorough harmless purifying treatment on the urban domestic waste and sewage and has the advantages of good purifying effect, high efficiency, stable and reliable operation, long service life and convenience in maintenance.

The invention discloses a multistage anaerobic reaction device which comprises a first stage reaction tank, a second stage reaction tank and a third stage reaction tank which are arranged in sequence and connected end to end, wherein the first stage reaction tank is provided with a stirring rank, the second stage reaction tank is provided with a stirring tank and / or a filler tank and the third stage reaction tank is provided with a filler tank; or the second stage reaction tank is provided with more than two stirring tanks and / or filler tanks connected end to end in series; a clapboard is arranged above each stirring tank and a stirring pump is arranged below the clapboard; and a clapboard is arranged in each filler tank and filler is arranged on the clapboard. By adopting the device disclosed by the invention, the gas producing efficiency of methane can be effectively improved.

The invention discloses a restaurant wastewater treatment method comprising the following steps: performing preliminary oil-water separation treatment on restaurant wastewater, and cleaning out solid residue precipitation; performing aeration on the restaurant wastewater subjected to oil-water separation treatment, thereby providing pressure difference to ensure that water flow alternately flows in a fiber filler area, and providing sufficient oxygen for aerobic bacteria at the same time; arranging quartz sand and a ceramisite filter material to perform interception, adsorption and removal on suspended matters; also arranging a fiber combination filler area to perform membrane-forming and bubble cutting for the wastewater, thus improving the utilization rate of oxygen. According to the restaurant wastewater treatment method and device, the oil-water separation is performed by adopting the property that the density of oil is smaller than that of water, and a plug flow type biological contact oxidation pond which is formed by serially connecting two standard units of a gas-driven circulating flow composite filter material filter tank according to a baffling mode is adopted, so that the wastewater treatment effect can be greatly improved.

The invention provides a preparation method of a polymer film for treating high-salt wastewater. The method comprises the following steps: I preparation of a fluorine-containing piperazine amide polycondensate; II modification of chitosan; III surface modification of graphene oxide; IV preparation of the film. The invention also discloses a polymer film for treating high-salt wastewater prepared according to the preparation method. The preparation method of the polymer film for treating the high-salt wastewater disclosed by the invention is simple and easy, the dependence on equipment is not high, the demanding on the reaction conditions is not strict, the raw materials are easy to obtain, the price is low, and the product is suitable for large-scale production. The prepared polymer film for treating the high-salt wastewater has the advantages of stable performance, large water flux, high salt removal rate, excellent mechanical properties, and strong corrosion and stain resistance.

The invention discloses a composite for treating heavy metal waste water. The composite for treating the heavy metal waste water is prepared from, by weight, 20-30 parts of common soil, 15-25 parts of limestone, 10-20 parts of zeolite powder, 20-40 parts of mesoporous molecular sieve, 40-60 parts of ethylenediamine tetraacetic acid metal sodium salt, 70-80 parts of sodium chloride and 30-50 parts of magnesium chloride. Through the combined action of a porous structure prepared from the common soil, the limestone, the zeolite powder and the mesoporous molecular sieve, a prepared adsorption material has high adsorption capacity and reducing capacity, multiple heavy metal ions, such as lead ions, cadmium ions and chromium ions, in water can be efficiently removed, the advantages of being high in removal rate and high in reaction speed are achieved, the adsorption material is loaded with zinc ions and magnesium ions, a synergistic effect is achieved, the capacity of reducing heavy metals is higher, and deep removal can be achieved.