30results about How to "Reduced removal efficiency" patented technology

The present invention discloses a method for advanced treatment of bio-treated coking wastewater, belonging to the field of advanced treatment and recycled use of wastewater. It adopts polymeric ferric sulfate (PFS) and polyacrylamide (PAM) as the flocculant for pre-treatment of bio-treated effluent. After the process of precipitation and filtration, the effluent is guided through an adsorption column filled with environmentally-friendly nano-composites whereby the advanced treatment of the bio-treated coking wastewater is achieved. When the absorption process reaches the breakthrough point, the adsorption operation will be stopped and sodium hydroxide solution is used as the desorption reagent for regenerating the nano-composites; the high-concentrated component of the desorption liquid is sent out for incineration or production of coal water slurry, meanwhile the low-concentrated component of the desorption liquid is used to prepare sodium hydroxid solution for the adsorption process of the next batch. The present invention features simple operating procedures and comparatively lower cost, and can be widely used in advanced treatment and comprehensive utilization of coking wastewater. It embodies not only significant environmental benefits but also promising market potential.

Electrically charged droplets and neutral droplets mixed with plasma are removed with better efficiency, and an improvement in the surface treatment precision of film formation by high purity plasma is sought.In a plasma processing apparatus including plasma generating portion A, plasma transport tube B and plasma processing portion C, an insulator interposed type plasma processing apparatus is constituted in which plasma transport tube B is made electrically independent from plasma generating portion A and plasma processing portion C electrically by interposing insulator IS and insulator IF between the starting end side and the finishing end side of the plasma transport tube. Plasma transport tube B is divided into multiple small transport tubes B01, B23 through intermediate insulator II1, and each small transport tube is made independent electrically. The electric potential of the plasma transport tube or the small transport tubes is set to GND, a variable positive electric potential, or a variable negative electric potential, by putting the plasma transport tube or the multiple small transport tubes in an electric floating state, or connecting bias power supplies EB 01, EB 23 for transport tube. Also, the small transport tubes are connected in a bent manner, and droplets are removed by the geometric structure.

The invention discloses a process and a device for realizing up-to-standard emission of boiler flue gas with a coupling technology. The device comprises an electrostatic synergetic dust remover, wherein the electrostatic synergetic dust remover is connected with an induced draft fan through a flue I, the other end of the induced draft fan is connected with an inlet of a desulfurizing tower through a flue II, and an outlet of the desulfurizing tower is connected with a chimney through a flue III; a mixer is arranged in the flue I; an ozone generator is connected with the mixer through an ozone delivery pipeline; a process water tank is connected with the electrostatic synergetic dust remover and the ozone generator respectively through water delivery pipelines. According to the process and the device, measures such as partial transformation of an existing electrostatic dust remover, addition of the ozone generator and the like are taken, coupling of three technologies of electrostatic synergetic dust removal, ozonation and wet absorption is realized successfully, and units such as an oxidation reactor, an absorption tower and the like are not required to be newly built for technology implementation, so that the process and the device have the advantages of low investment, small occupied area, low transformation workload, low operation cost and the like.

The invention relates to the technical field of flue gas treatment and particularly discloses a high-temperature waste gas dust collection method which comprises the following steps: (1) introducing aflue gas from the bottom of a dust collection tower, and discharging the flue gas from the top of the dust collection tower after passing through a filtering layer in the dust collection tower; (2) while the flue gas is introduced into the dust collection tower, spraying water down from the top of the dust collection tower; (3) collecting water from the bottom of the dust collection tower, wherein the water sprayed down from the top of the dust collection tower is water collected from the bottom of the dust collection tower. Due to the adoption of the filtering layer, the flue gas can be adsorbed, the flue gas has a large contact area with the filtering layer when passing through the filtering layer, and in addition, when the flue gas is introduced from the bottom of the dust collection tower, the water is sprayed down from the top of the dust collection tower, and the water also has a dust collection function when being in contact with the flue gas, so that a dust collection effect can be improved.

The invention provides a device and method for removing heavy metal complexes from biogas slurry. The device comprises a heavy metal removal unit, the heavy metal removal unit comprises an electromagnet column, iron-based magnetic particles are distributed on the surface of the electromagnet column, and each of the two ends of the electromagnet column is communicated with a current loop. According to the device, the contact efficiency of iron particles and the heavy metal complexes can be improved, in addition, the electron donating rate of the iron particles can be increased, and the removal efficiency of heavy metals can be improved from the internal and external factors.

The invention discloses a Ni / Zn-MnO2 electrode and application of the Ni / Zn-MnO2 electrode in wastewater treatment, belonging to the field of waste resource recycling. The electrode is prepared by thefollowing steps: disassembling, separating, grinding, screening, cleaning and drying a waste zinc-manganese dry battery to obtain black powder containing zinc-manganese oxide; and loading the powderon a foamed nickel substrate to prepare the Ni / Zn-MnO2 electrode. The electrode is applied to wastewater treatment to realize electrooxidation removal of pollutants in wastewater. According to the method, the waste zinc-manganese dry battery is reasonably utilized to prepare the efficient electrode in a mode of treating the waste with the waste, and the efficient electrode is applied to the fieldof wastewater treatment, so recycling of solid waste and reduction of pollutants are realized.

The invention discloses a nano calcium peroxide resin matrix composite for removing formaldehyde in air and a preparation method of the nano calcium peroxide resin matrix composite, and belongs to the field of indoor air pollution control. The nano calcium peroxide resin matrix composite comprises an oxidizing agent and a carrier, the carrier is macroporous adsorption type styrene resin SD300, the oxidizing agent is in-situ generated nanoscale CaO2 (nCaO2) on SD300, the reagent used for in-situ generation of nCaO2 comprises CaCl2, ammonia water and H2O2, and the mass ratios between resin and CaCl2, ammonia water and H2O2 are 1:(0.5-10), 1:(0.1-5) and 1:(5-15) respectively. The prepared nCaO2-SD300 composite has the advantages of large CaO2 supported quantity and difficulty in stripping off; formaldehyde can be converted into calcium formate, CO2 and H2O rapidly and enduringly at room temperature, secondary pollution is avoided, and safety is high; the composite is simple in production process, low in cost, convenient to use and wide in application range.

The invention provides a small integrated treatment device for domestic sewage. The characteristic that the removal efficiency of pollutants is reduced with the reduction of the concentration of the pollutants in the aerobic stage of a traditional activated sludge method is utilized, and the adsorption and enrichment effects of an aerobic-facultative percolation system on the pollutants are utilized, so a mode of combining the two processes is adopted to solve the problem of low treatment efficiency of the traditional activated sludge method on low-concentration wastewater is solved, the defect of large occupied area of the aerobic-facultative percolation system is also overcome, the load resistance of the system is improved, and the size of the integrated device is further reduced; and activated sludge generated in an anaerobic zone and an aerobic zone serves as one of nutrient sources of a biological membrane in the aerobic-facultative percolation system at the same time, and is decomposed and utilized by the biological membrane in the aerobic-facultative percolation system. The device reduces the sludge treatment cost and the management cost.

The invention provides a method for reducing the content of volatile matters in resin. The method comprises the following steps: step 1, arranging a multi-roll assembly, which at least comprises two press rolls; step 2, placing resin between any set of adjacent pressing rollers of the multi-roller assembly, and controlling multiple pressing rollers of the multi-roller assembly to roll, wherein thetemperature of any pressing roller is lower than the resin curing temperature; and step 3, measuring the content of volatile matters in the resin between the adjacent pressing rollers according to set time, and adjusting the distance between the adjacent pressing rollers according to the content of the volatile matters before the content of the volatile matters meets the use requirement, whereinthe content of the volatile matters is in negative correlation with the distance. The method provided by the invention is simple and feasible, the volatile matter removal efficiency is high, the subsequent use of the obtained resin is not influenced, and the technical problems in an existing resin volatile matter removal method are solved.

The invention discloses the microchromodispora fungus HNU107 and its application in ammonia waste gas degradation. The Microdiplodia sp. fungal strain "HNU107" of the present invention has a preservation number of CCTCC NO: M 2019501. Application of the fungus "HNU107" in the degradation of ammonia-containing waste gas. Artificially increasing the abundance of HNU107 in the bioactive filler can improve the removal efficiency of the bioactive filler for ammonia-containing waste gas. The reactor added with the fungus HNU107 of the genus Leuchromodispora, after entering the stable period, the absorption and removal efficiency of ammonia-containing waste gas increased by 12.8% compared with the control group. The acclimatization time of the active filler after adding the fungus HNU107 of the genus Leuchromodispora was shortened by 3 days, and the biotrickling filter reactor could be quickly started.

This application relates to the technical field of flue gas treatment, and specifically discloses a high-temperature waste gas dedusting method, which includes the following steps: Step (1): Pass the flue gas from the bottom of the dedusting tower, and pass through the filter layer in the dedusting tower discharge from the top of the dedusting tower; step (2): while introducing flue gas into the dedusting tower, water is continuously poured down from the top of the dedusting tower; step (3): water is collected from the bottom of the dedusting tower, and The water that rains down from the top of the tower comes from the water collected at the bottom of the dedusting tower. By setting the filter layer to absorb the flue gas, when the flue gas passes through the filter layer, because the flue gas has a large contact area with the filter layer; and when the flue gas enters from the bottom of the dust removal tower, water pours down from the top of the dust removal tower, The contact between water and flue gas also has the effect of dust removal, which can improve the dust removal effect.

The invention discloses an automatic removing device for concrete on the surface of a steel pipe. The automatic removing device comprises a machine body and is characterized in that a third space witha leftward opening is defined in the machine body, a rotating mechanism used for rotating the steel pipe is arranged in the third space, and a steel pipe channel is defined in the right side of the third space and communicates with the third space. According to the automatic removing device, due to the design of a clamping mechanism, the concrete on the steel pipe clamped by a clamping box is vibrated to be loose to a certain degree, meanwhile, the concrete on the steel pipe is further blocked through chasing of a loose jacking column, and therefore removing of the concrete through removing friction wheels is more convenient and faster, and the situation that due to the fact that the concrete adhering to the steel pipe is too large, the too large concrete blocks matched friction between the removing friction wheels when the removing friction wheels remove the concrete, and the concrete removing efficiency is reduced is prevented.

The invention discloses an impurity removal device for a rice thresher, and relates to the field of threshers. The device comprises a bottom plate, an impurity removal box and a beating mechanism, a rice outlet, a coarse material outlet and a fine material outlet are formed in the other end of the bottom of the impurity removal box, a fan is mounted at the axis of the top of the bottom plate, the beating mechanism is arranged at the end, away from a first motor, of the impurity removal box, and a fine filter screen is mounted in the impurity removal box; by means of cooperation of the coarse filter screen, the fine filter screen and the fan and utilization of gas circulation, the rice impurity removal effect is greatly improved, the rice screening effect is further enhanced, continuous and efficient production of rice is guaranteed, energy consumption is reduced, and the production cost is reduced. And the arranged beating mechanism can effectively beat the fine filter screen in a reciprocating mode, so that the cleaning effect of the filter screen is guaranteed, the situation that the impurity removal effect is reduced due to the fact that meshes of the filter screen are blocked is prevented, and practicability is higher.

The invention mainly discloses a catalytic oxidation filter for organic sulfur waste gas treatment. The catalytic oxidation filter comprises a catalytic oxidation filler filter bed box body, a gas inlet of the catalytic oxidation filler filter bed box body is connected with a waste gas storage tank, a spraying pipe is arranged at the top of the catalytic oxidation filler filter bed box body, the spraying pipe is connected with a centrifugal fan, the centrifugal fan is connected with a catalytic oxidant adding device through a pipeline, the catalytic oxidant adding device is respectively connected with a hydrogen peroxide adding device and a ferrous sulfate adding device through pipelines, a gas baffling baffle is arranged at a gas inlet of the catalytic oxidation filler filter bed box body, a catalytic filter material layer is arranged on one side of the gas baffling baffle in the catalytic oxidation filler filter bed box body and below the spraying pipe, and a liquid collecting box isarranged at the bottom of the catalytic filter material layer. Hydroxyl free radicals (-OH) generated by a Fenton reagent formed by hydrogen peroxide and ferrous sulfate are utilized, the oxidation potential reaches up to 2.8 ev, and the oxidation capacity is high and is only second to that of fluorine.

The invention discloses the aromatic fusarium fungus HNU066 and its application in the degradation of waste gas containing hydrogen sulfide. The fungal strain "HNU066" of the genus Fusarium redolens of the present invention has a preservation number: CCTCC NO: M 2019500. Application of fungus HNU066 in the degradation of exhaust gas containing hydrogen sulfide. The fungus "HNU066" increases its abundance in the active packing of the biotrickling filter reactor, which can improve the removal efficiency of the bioactive packing for hydrogen sulfide-containing waste gas. Adding aromatic Fusarium fungus "HNU066" to the reactor, after entering the stable period, the absorption and removal efficiency of hydrogen sulfide-containing waste gas increased by 34.5% compared with the control group.

The invention discloses a Fusarium redolens fungus HNU066 and an application thereof in degradation of hydrogen sulfide containing exhaust gas. The Fusarium redolens fungus HNU066 disclosed by the invention has a collection number of CCTCC No: M 2019500. The fungus HNU066 is applied to the degradation of the hydrogen sulfide containing exhaust gas. The richness of the fungus HNU066 in active fillers of a biological trickling filtration column reactor is improved, and the efficiency of clearing of the hydrogen sulfide containing exhaust gas by bioactive fillers can be increased. After the reactor added with the Fusarium redolens fungus HNU066 is in a stable stage, the hydrogen sulfide containing exhaust gas absorption clearing efficiency is increased by 34.5% compared with that of a controlgroup.

A filter that includes a first electret filter layer through which an airstream first passes before encountering a second electret filter layer. The first filter layer exhibits nondecreasing removal efficiency and removes a majority of a challenge aerosol; whereas the second layer exhibits decreasing removal efficiency and has an initial quality factor greater than the first layer. Together, the first and second electret filter layers can provide a filter that exhibits a nondecreasing removal efficiency and a relatively low pressure-drop. The filter can provide nondecreasing removal efficiency and reduced pressure drop even though the second electret filter layer exhibits decreasing removal efficiency in contrast to the desired nondecreasing removal efficiency for the filter as a whole.

The invention provides a modified loaded potassium carbonate absorbent and the application thereof to carbon dioxide removal in an impurity atmosphere. The modified loaded potassium carbonate absorbent is obtained by performing water vapor pretreatment modification or alkaline substance addition modification on a loaded potassium carbonate absorbent; the loaded potassium carbonate absorbent uses potassium carbonate as an active component, and the loading amount of the potassium carbonate is 10-30wt%. According to the invention, after absorbent modification, decarburization deactivation of theloaded potassium carbonate absorbent in an atmosphere containing SO2 / NO2 acidic impurities can be slowed down or effectively inhibited, the utilization rate of the active component can be increased, the decarburization activity of the loaded potassium carbonate absorbent can be enhanced, and the stability of the absorbent can be improved; in addition, a method provided by the invention is simple and feasible, and is easy to operate and control in practical application.

The invention relates to a device for combusting and treating organic waste gas through a plasma enhanced porous medium. The device comprises a filter, a reactor, a high-voltage power supply and a controller, wherein the filter is used for removing particulate matters in the organic waste gas; the reactor is used for performing thermal oxidization and plasma oxidization to degrade the organic waste gas; the high-voltage power supply is used for providing plasma; the controller is used for controlling flow and temperature of the reactor; the filter is connected with the reactor; and the reactor is connected with the controller and the high-voltage power supply respectively. According to the device, the organic waste gas is degraded due to synergism of heat storage effect of porous medium material and oxidation effect of plasma free radicals, so that the degradation efficiency of the organic waste gas is improved; and meanwhile, input energy of the plasma is adjusted according to concentration of the organic waste gas, so that the degradation efficiency of the organic waste gas is ensured and the input energy consumption is effectively reduced. The device has the advantages of wide application range of the concentration of the organic waste gas, low input energy, high processing efficiency and high controllability of system; and the device can be widely used for processing the organic waste gas released in production of various industries such as pharmacy, coating industry and the like.

The invention provides a novel catalyst with high activity and high stability and a preparation method thereof. The novel catalyst is used for catalytic oxidative degradation of waste incineration dioxin. The catalyst mainly comprises an active component and a carrier. The active component is composed of 0.5-10% by mass of transition metal oxides V2O5, 0.1-8% by mass of WO3 and 0.1-6% by mass of Fe2O3; and the catalyst carrier is composed of 50-95% by mass of TiO2 and 5-20% by mass of SiO2. The catalyst does not contain noble metal, is low in preparation cost, simple in preparation method andlow in activation temperature, and has relatively high elimination efficiency on dioxin pollutants, the elimination rate of the catalyst at 180 DEG C is close to 70%, and the elimination efficiency ofthe catalyst at 220 DEG C exceeds 90%.

Disclosed herein are systems and methods for treating the surface of a microelectronic substrate, and in particular, relate to an apparatus and method for scanning the microelectronic substrate through a cryogenic fluid mixture used to treat an exposed surface of the microelectronic substrate. In particular, an improved nozzle design used to expand the fluid mixture is disclosed herein. In one embodiment, the nozzle design incorporates a two nozzle pieces are combined to form a single nozzle design, in which the two pieces are slight misaligned to form a unique orifice design. In another embodiment, two pieces are combined and aligned along a common axis of the fluid conduit. However, an offset piece is inserted between the two pieces and has a hole that misaligned from the flow conduits of the two other pieces.

The invention discloses an efficient impurity removing device for coating processing. The device comprises a shell. An air cylinder is fixedly connected to the right side of the bottom of the inner wall of the shell, a lifting plate is fixedly connected to the top of the air cylinder, a transmission frame is fixedly connected to the top of the front face of the lifting plate, a first fixed block is fixedly connected to the bottom of the right side of the inner wall of the shell, a first connecting plate is movably connected to the front face of the first fixed block, the left side of the frontface of the first connecting plate is movably connected to a second connecting plate, the right side of the front face of the second connecting plate is fixedly connected to a transmission bar matched with the transmission frame in use, the left side of the bottom of the inner wall of the second connecting plate is fixedly connected to a second fixed block, the front face of the second fixed block is movably connected to a rotating plate, the left side of the back face of the second connecting rod is movably connected to the top of the front face of the rotating plate through a rotary shaft,an arc-shaped tooth plate is fixedly connected to the top of the rotating plate, an impurity removing box is arranged in the shell, slide rings are fixedly connected to the tops of the front and backsides of the impurity removing box, a slide bar is slidably connected in each slide ring, and the bottom of the impurity removing box is fixedly connected to the tooth plate.