92results about How to "Efficient removal effect" patented technology

A technology for synchronously removing N and P from the city sewage features that the composite suspended living things system with active sludge and biomembrane is created in a batch of composite bioreactors, which in running by the sequence of anaerobic, aerobic and anoxic steps. Its advantages are short reaction flow, less consumption of carbon source, high effect and low cost.

The invention relates to a multifunctional composite film material and a production process thereof. The composite film material sequentially comprises an antibacterial fiber layer, a film layer, a functional particle layer and a non-woven fabric support layer from exterior to interior. The production process comprises the following steps: (1) unwinding and tiling the non-woven fabric support layer and performing dot glue spraying on the non-woven fabric; (2) uniformly dispersing the functional particle layer on the non-woven fabric support layer; (3) covering the functional particle layer with a hydrophobic and oleophobic film material; (4) mixing and stirring polyester or polymer polypropylene with an antibacterial material, and spinning on the surface of the film material through a melt blown process; and (5) fixing the non-woven fabric support layer, the functional particle layer, the film layer and the antibacterial fiber layer through an ultrasonic generation device. According to the invention, materials of different functions are combined into a whole in a layer-to-layer compounding manner, so that particulate matters and volatile organic compounds in air can be effectively removed.

The invention discloses a microbial fuel cell by taking a conducting film aerating bio-film reactor as a cathode. The microbial fuel cell comprises a reactor, wherein a partition membrane 5 is arranged in the middle of the reactor to divide the reactor into an anode chamber 1 and a cathode chamber 3; an anode 2 is arranged in the anode chamber and a cathode 4 is arranged in the cathode chamber; two ends of an external circuit 6 are respectively connected with the anode and the cathode; water inlets 7 and 9 are respectively formed in the lower parts of the walls of the anode and cathode chambers and water outlets 8 and 10 are respectively formed in the upper parts of walls of the anode and cathode chambers; the cathode is the conducting film aerating bio-film reactor which is sequentially connected with a gas flow flowmeter 11 and a gas pump 12 by virtue of pipelines. According to the fuel cell disclosed by the invention, not only is the electric energy generated by microorganisms utilized, but also the denitrification process in the conducting film aerating bio-film reactor is promoted, so that the removal effect of nitrogen is remarkably improved. By using a hollow fiber membrane or a tubular membrane as a biological attachment carrier, as the specific surface area of the carrier is great, the bio-film culturing speed is great, so that formation of the bio-film is facilitated.

The invention provides a preparation of a wastewater phosphorus removal carboxyl functional nanometer Fe3O4 adsorbent and an application method thereof. The preparation method comprises the following steps: taking FeCl2.4H2O and FeCl3.6H2O as the source of iron grains; dropping sodium hydroxide as a precipitant under the protection of inert gas; preparing a certain dimension of Fe3O4 grains; adding diethylene triaminepentaacetic acid (DTPA) carbonation by utilizing the in-situ composite method during the precipitating and the forming processes of the nanometer Fe3O4 crystal grains; and preparing the black carboxyl functional nanometer Fe3O4 adsorbent, wherein the diameter of the adsorbent is 5 to 20 nm. The preparation and the application of the adsorbent have simple operation steps, low cost and highly-efficient removal effect for phosphate in water; the removal ratio achieves above 99 percent; the adsorbent can be widely applied to the high-concentration phosphoric industrial wastewater and water supply depth phosphorus removal process and can be separated from the solution after being absorbed quickly under an external magnetic field, thereby solving the problem of solid-liquid separation after phosphor is absorbed by the adsorbent; and the adsorbent can be recovered and utilized and has simple and generative method.

The invention discloses a large-area contact type machining device for fused quartz by plasma discharge machining, relates to a plasma machining device, and aims at solving the problems of the relatively low activity and low removal rate of reaction ions due to a high electrode temperature and a short machining time during the present plasma machining process. According to the invention, the upper end surface of an air guide plate and the upper end surface of a workpiece clamping plate on an end part are located in the same horizontal plane; a moulding electrode is arranged above a workpiece groove; a discharge space between two electrodes is formed on the lower end surface of the moulding electrode and the upper end surface of the workpiece groove; a cavity between an upper flow guide body and a lower flow guide body is a gas guide cavity; gas inlet holes are formed on the end surfaces of the gas inlet ends of the upper flow guide body and the lower flow guide body, and the two gas inlet holes are communicated with a gas mixing box; a helium gas cylinder, a carbon tetrafluoride gas cylinder and an oxygen cylinder are connected with the gas mixing box via a helium flow meter, a tetrafluoride flow meter and an oxygen flow meter respectively; a water pump is connected with a lower cooling channel and an upper cooling channel; and a radiofrequency power supply is connected with a high electrode and a base plate. The large-area contact type machining device disclosed by the invention is used for plasma machining.

The invention discloses a minicar exhaust purifying device easy to install. The minicar exhaust purifying device comprises a purifying barrel and an exhaust port. One end of the purifying barrel is provided with the exhaust port, and the other end of the purifying barrel is connected to a threaded pipe; the inner wall of one end of the exhaust port is provided with a baffle vertically arranged, and the surface of the baffle is provided with a plurality of circular through holes; one end port of the threaded pipe is connected to a dust removal barrel, and the surface of one end of the dust removal barrel is provided with fasteners; the dust removal barrel is internally provided with a fist filer screen, a second filter screen and a third filter screen, and the purifying barrel is internally provided with a desulfurization layer; and one side of the desulfurization layer is provided with a deacidifying layer. The minicar exhaust purifying device is small in overall volume, and easy to install on a car exhaust pipe through the fasteners, so that the exhaust is purified when the exhaust is just produced; solid particulate matters in the exhaust are removed efficiently through the first filter screen, the second filter screen and the third filter screen, and toxic gas is purified through the desulfurization layer, the deacidifying layer, a denitration layer and an activated carbon adsorption layer to achieve non-toxic emission.

The invention relates to an environment-friendly composite crude oil decalcifying agent which is prepared from the following components in percentage by mass: 20-60wt% of a chelating agent, 5-20wt% of an organic acid, 20-40wt% of a dispersant, 0.1-5wt% of a surfactant, 0.5-3wt% of a corrosion inhibitor and 10-40wt% of water. The environment-friendly composite crude oil decalcifying agent does not contain phosphorus; due to introduction of an amino acid structure, the environment-friendly composite crude oil decalcifying agent has relatively good biological degradability and is a novel environment-friendly crude oil decalcifying agent. By the decalcifying agent, over 90% of calcium in crude oil can be eliminated; the decalcifying agent does not contain a eutrophic element phosphorus and is environmentally friendly.

The invention discloses a water purifying method of a uniform flow constructed wetland. A constructed wetland is established; a water inlet end is arranged on one wall of the wetland pool, and a water outlet end is arranged on the other wall of the wetland pool; the water inlet end and the water outlet end are respectively provided with a water distributing zone and a water gathering ground, which are filled with cobblestones with a particle size of 30-50mm; a main body filling material zone comprises, from top to bottom: a first layer filter pack filled with a quartz sand filling material with a particle size of 0.1-1 mm, a second layer filter pack filled with a quartz sand filling material with a particle size of 0.1-3mm; a third layer filter pack filled with a quartz sand filling material with a particle size of 1-3 mm; a fourth layer filter pack filled with a quartz sand filling material with a particle size of 1-5 mm; a fifth layer filter pack filled with a quartz sand filling material with a particle size of 3-7 mm; and humidogene emergent aquatic plant plants are planted on top of the first layer filter pack. The invention can be used in treatment of household sewage in cities and towns and industrial wastewater of food processing industry and slaughter industry, etc., so as to avoid current short flow and formation of a dead zone and remove pollutants efficiently.

The invention discloses a sodium tartrate modified copper-cobalt-iron hydrotalcite supported carbon quantum dot nanocomposite material and a preparation method and application thereof. Sodium tartrate modified copper-cobalt-iron hydrotalcite is obtained by taking copper salt, cobalt salt and iron slat as raw materials, and sodium tartrate as a modifier through a hydrothermal reaction, and is compounded with carbon quantum dots to obtain the sodium tartrate modified copper-cobalt-iron hydrotalcite supported carbon quantum dot nanocomposite material. The composite material can efficiently remove organic matters in organic wastewater by wet catalytic air oxidation under mild conditions, especially the organic matters difficult to degrade such as nitrobenzene in the prior art; a catalyst is stable in composition; ion dissolution is small during catalysis; secondary pollution to the environment is reduced; cheap air can be taken as an oxidant; the cost is greatly reduced.

The invention relates to a salt-tolerant cold-resistant ammonia oxidizing bacterium immobilizing method and an application thereof. The salt-tolerant cold-resistant ammonia oxidizing bacterium immobilizing method comprises the following steps: firstly screening out high-efficiency ammonia oxidizing bacteria, carrying out salt-tolerant and cold-resistant domestication on the high-efficiency ammonia oxidizing bacteria to obtain domesticated Ochrobactrum.sp and Aquamicrobium.sp, then putting prepared biological carbon balls into a salt-tolerant cold-resistant ammonia oxidizing bacteria-enriched liquid for carrying out biofilm formation on the biological carbon balls, then mixing with salt-tolerant cold-resistant ammonia oxidizing bacterium embedding mixed liquor, and finally putting the biological carbon balls in the mixed liquor into a saturated boric acid solution one by one, putting the biological carbon balls into a refrigerator, crosslinking, and cleaning, so that salt-tolerant cold-resistant ammonia oxidizing bacterium immobilized biological carbon balls are obtained. The salt-tolerant cold-resistant ammonia oxidizing bacterium immobilizing method has the advantages that the biological carbon balls are utilized as a carrier for immobilizing the salt-tolerant cold-resistant ammonia oxidizing bacteria, a carrier material is local and available, a preparation method is simple, industrialization can be easily realized, the salt-tolerant cold-resistant ammonia oxidizing bacterium immobilized biological carbon balls can be applied to purification of low-temperature high-salt ammonia nitrogen polluted water, microbial biomass is high, mechanical strength is high, treatment effect is good, cost is low, recycling is not carried out, and no secondary pollution is produced to the environment.

The invention discloses preparation and application of a palygorskite / graphite phase carbon nitride compound composite material. The preparation method of the pal / g-C3N4 composite material includes: subjecting palygorskite to ultrasonic dispersion in distilled water, adding dicyandiamide and mixing the substances evenly, and then performing ultrasonic treatment for 0.5-1h; conducting heating to 45-50DEG C, and further performing stirring till complete dryness by evaporation, conducting grinding into powder, placing the product in a muffle furnace, and conducting calcination at 520-550DEG C for 3.5-4h; performing cooling to room temperature, and then conducting grinding into powder, thus obtaining the pal / g-C3N4 composite material. The invention adopts water bath method to compound dicyandiamide and palygorskite to successfully prepare the pal / g-C3N4 composite material, the catalytic activity of g-C3N4 is combined with the adsorption performance of palygorskite, and the two substances cooperate to enhance the light absorption intensity of the composite sample, thus improving the photocatalytic efficiency, and reaching the effect of efficient removal of pollutants. Experiments show that the composite catalytic material has high catalytic oxidation rate on tetracycline hydrochloride, and the total removal rate reaches 85%.

The invention discloses a Mn-Co-La composite catalyst for catalytic degradation of industrial waste gas in cooperation with discharge plasma. The composite catalyst comprises an active component and a xerogel carrier, wherein the active components comprise Mn, Co and La, the atomic molar ratio of Mn to Co to La is (0.5-2): (0.5-2): (1-2), and the size of the active components is 4-8nm; and the active components are uniformly and orderly distributed in the xerogel carrier. The composite catalyst has relatively high catalytic degradation and stability on VOCs gas at low temperature. The invention further discloses a preparation method and application of the Mn-Co-La composite catalyst for catalytic degradation of the industrial waste gas in cooperation with the discharge plasma. The preparation method is efficient, simple, green and environment-friendly, and can be applied to large-scale industrial production and cooperative discharge.

The invention provides a preparation method of a modified vanadium tetrasulfide Fenton catalyst. The method comprises the following steps: dissolving a metavanadate and a templating agent in water byheating to obtain a solution A; dissolving thioacetamide or thiourea as a sulfur source in ethylene glycol, and performing heating and uniform dispersing with the solution A to obtain a solution C; placing the solution C in a closed container to carry out a hydrothermal reaction for 10-14 h at 140-180 DEG C; and performing washing and drying on the obtained product, and performing grinding to obtain the modified vanadium tetrasulfide Fenton catalyst. The preparation method is simple, and equipment requirements are low. The modified vanadium tetrasulfide Fenton catalyst prepared by the method can rapidly and effectively remove organic pollutants such as rhodamine B, methylene blue and bisphenol A in water, rhodamine B can be removed about 95% in 15 min, and removal rates of bisphenol A and2-chlorophenol both reach 100% at 90 min. The catalyst is a solid catalyst, and is easy to separate from water, and the catalyst can be recycled and the high removal effect is maintained.

The invention provides a preparation method for a nanometer microelectrolysis material used for removing tetracycline pollutants, belonging to the technical field of treatment of slightly-polluted water. The preparation method comprises the following steps: dissolving ferrous sulfate heptahydrate solid powder or / and copper sulfate pentahydrate solid powder in a mixed solution of ethanol and water and carrying out ultrasonic dispersion; then adding powdery active carbon and carrying out ultrasonic dispersion again; and rapidly adding a sodium borohydride solution and carrying out a stirring reaction at the same time so as to obtain a novel black solid particle nanometer iron-carbon microelectrolysis material or a novel black solid particle copper-loaded nanometer microelectrolysis material. The nanometer microelectrolysis material prepared in the invention can efficiently and rapidly remove tetracycline antibiotic pollutants, and the removal rate of the tetracycline antibiotic pollutants can reach 94.5 to 97.9%.

The invention relates to a treatment method and treatment system for zero discharge and fractional crystallization of concentrated brine. The method comprises the following steps: pre-reaction, to bemore specific, converting HCO3<2-> into CO3<2-> and removing heavy metal ions; magnetic flocculation, to be more specific, flocculating the pre-reacted wastewater; precipitation, to be more specific,precipitating the flocculated wastewater; concentration, to be more specific, sequentially carrying out positive osmosis and reverse osmosis separation on the precipitated supernatant, and outputtingseparated purified water; crystallization, to be more specific, crystallizing the concentrated highly concentrated brine; crystal separation, to be more specific, carrying out solid-liquid separationon crystallization slurry generated by the crystallization, and outputting a separated crystalline matter; and magnetic seed separation, to be more specific, separating a magnetic seed, sludge and water and recycling the magnetic seed. The system comprises a reaction tank, a flocculation tank, a sedimentation tank, a concentration device, a crystallization reaction reactor, a solid-liquid separation device and the like. The system is suitable for treating desulfurization concentrated brine of catalytic cracking flue gas and other similar high salt wastewater, and can realize zero discharge ofconcentrated brine and crystallization salt productization.

A vegetable and fruit detoxicating agent consists of pesticide extracting agent ethyl acetate, acetylacetic ether, and / or diglycerol laurate; metal toxic compounding agent EDTA, citric acid and / or gluconic acid; surfactant lauryl sodium sulfate, N,N-oleoyl methyl taurine sodium, sucrose ester of fatty acid and / or polyethenoxy lauryl sodium sulfate; bactericide sulfabenzamine, clove oil and / or ethanol; and water. It can eliminate residual pesticide and metal toxic, and kill colibacillus and other germ in vegetable and fruit fast and effectively without affecting the color, fragrance, taste and nutrients.

The invention discloses a preparation method of a nano composite catalyst for removing methanal. The method comprises the following steps of: S1, adding metatitanic tetra-n-butyl into absolute ethyl alcohol at a room temperature, and stirring the materials so as to obtain a material a; S2, uniformly mixing diethanol amine, absolute ethyl alcohol and distilled water at a room temperature, so as to obtain a material b; S3, stirring the material a, then adding the solution b into the solution a, and stirring the solution a and the solution b so as to obtain a material c; S4, dispersing the material c in a chloroplatinic acid solution, stirring, then adding a sodium borohydride solution for liquid-phase reduction, further drying, then mixing with nano kieselguhr particles, and then roasting the mixture, thereby obtaining the nano catalyst for removing methanal. The nano catalyst for degrading methanal, which is prepared by the invention, is simple in production process, good in effect and high in efficiency.

The invention discloses a chemical agent for removing antimony in printing and dyeing wastewater and a removal method of the antimony. The chemical agent comprises a mixture composed of manganese tailing powder and FeSO4, wherein the mixture is solid powder; a main component of the manganese tailing powder is MnOx / SiO2, the grain diameter is 0.075 to 0.100mm and the mass ratio of MnOx / SiO2 / FeSO4 ranges from (1 to 1 to 1) to (1 to 1 to 8); FeSO4 is FeSO4.7H2O, FeSO4.3H2O or anhydrous ferrous sulfate; the removal method comprises the following steps: step 1, putting antimony-containing printingand dyeing wastewater into a pre-treatment tank and carrying out impurity removal pre-treatment, so as to obtain pre-treated antimony-containing printing and dyeing wastewater; step 2, putting the pre-treated antimony-containing printing and dyeing wastewater into a reaction contact tank and adding a certain amount of the chemical agent and contacting and stirring; after reacting for 30 to 60min,thus obtaining reacted antimony-containing printing and dyeing wastewater; step 3, putting the reacted antimony-containing printing and dyeing wastewater into a coagulation precipitation tank, and standing and precipitating; then carrying out solid-liquid separation to remove heavy metal antimony in the printing and dyeing wastewater.

The invention discloses a pesticide removing agent for vegetable and fruit. The pesticide removing agent is prepared from the following raw materials by weight: 2 to 3 parts of ethyl acetate, 5 to 8 parts of ethyl acetoacetate, 1 to 3 parts of bio-enzyme, 2 to 4 parts of active calcium, 10 to 15 parts of protein powder, 4 to 6 parts of an antifoaming agent and 10 to 20 parts of deionized water. The pesticide removing agent provided by the invention exerts a rapid and high-efficiency removal effect on various pesticides absorbed by or dissolved in wax coats of vegetable and fruit, or even on residual pesticides penetrating in epidermal tissue cells, enables pesticide residual in vegetable and fruit to be reduced by 60 to 90% and has a phoxim removal rate of more than 80%. The pesticide removing agent can also be used for detoxification of tea and washing of tableware; since the pesticide removing agent is prepared from components according with hygienic standards and harmless to human bodies, the pesticide removing agent is safe and non-toxic and does not destroy original natural flavor and nutritional quality of vegetable and fruit; a preparation method for the pesticide removing agent is simple, the raw materials are cheap and easily available, and the pesticide removing agent has a substantial detoxification effect.

The invention discloses a method for dynamically adsorbing and purifying heavy metal ions in water. With the adoption of a water flowing control technology with an adsorbent as a stationary phase, by virtue of ingenious design of a stationary phase filtration column, an efficient dynamical adsorption condition is conveniently and effectively controlled, the technical method for dynamically adsorbing and purifying the heavy metal ions in the water is integrated, and a novel method and way is provided for effectively and efficiently controlling heavy metal pollution emergency disposal and micro-pollution of heavy metals in rivers and lakes. As micro-pollution treatment is carried out on the rivers and the lakes with the heavy metal ions as main pollutants, except efficient heavy metal ion removing effect, the method also has certain pollution accident emergency function. In addition, the method has the advantages of stable running process of device, low energy consumption, low running cost and the like.

The invention relates to an environment-friendly polyether multipolymer crude oil decalcifying agent with stable performance, in particular to an environment-friendly crude oil decalcifying agent and a preparation method thereof. The crude oil decalcifying agent has excellent decalcifying performance, and is prepared from polyether amino-acid ester reaction monomers, allyl thiourea and unsaturated double-bond monomers containing vinyl through free radical polymerization. The general structural formula is shown in the description, wherein A is a repetitive structure unit generated after copolymerization of the unsaturated double-bond monomers containing vinyl, R is -CH2-SH or -(CH2)2-CONH2, the polymerization degree x is 2-500, the polymerization degree y is 2-500, the polymerization degree z is 2-500, and the repetitive unit m is 3-100.

The invention discloses a calcium-magnesium combined desulphurization and denitrification method realizing deep removal of flue gas pollutants, and relates to the field of environmental protection, in particular to a novel technology developed for deep desulphurization and denitrification of industrial flue gas. Desulphurization equipment corresponding to the method comprises multiple areas including a main desulphurization area, a deep desulphurization area and an efficient dedusting and demisting area. In the main desulphurization area, a conventional calcium process (lime or limestone) is used for desulphurization, and higher than 90% of the flue gas desulphurization efficiency is realized under more economical and reasonable conditions; then the flue gas passes through the deep desulphurization area, a magnesium-process desulphurization technology is used, concentration of sulfur dioxide in the flue gas is reduced to be lower than 30 mg / m<3> through desulphurization under the condition of lower liquid-gas ratio, and the requirement for ultralow sulfur dioxide emission is met. Besides, an oxidation denitrification accelerant can be added to the deep desulphurization area, and desulphurization and denitrification functions are realized synchronously. Compared with the prior art, the method has the advantages that the desulphurization efficiency is high, the cost is low, and an intermediate product can be recycled.

The invention provides a zinc acetate modified activated carbon fiber and titanium dioxide composite material and a preparation method thereof, and belongs to the technical field of environmental engineering, the composite material has excellent adsorption performance and photocatalytic performance at the same time and has an efficient removal effect on high-concentration volatile organic compounds, and the preparation method of the composite material is simple and easy to implement. Preparation cost is low. The preparation method of the composite material comprises the following steps: immersing activated carbon fibers in a zinc acetate solution, carrying out ultrasonic treatment, then carrying out vacuum impregnation treatment, repeating the ultrasonic treatment and the vacuum impregnation treatment once, taking out and drying to obtain zinc acetate modified activated carbon fibers; preparing a sol of a titanium dioxide precursor, soaking the zinc acetate modified activated carbon fibers in the sol, carrying out ultrasonic treatment, carrying out vacuum impregnation treatment, repeating the ultrasonic treatment and the vacuum impregnation treatment once, taking out, drying and roasting to obtain the composite material.

The invention discloses a vegetable detergent. The vegetable detergent is prepared from following raw materials by weight: 25-35 parts of an alkylolamide type nonionic surfactant, 3-5 parts of cocamidopropyl betaine, 2-6 parts of alkaline protease, 10-15 parts of a sodium xylenesulfonate solution, 10-15 parts of (C1-C4)-alkyl acrylate, 8-10 parts of ethylene glycol, 15 parts of glycerin and 25 parts of deionized water. The vegetable detergent has rapid and efficient removing effects for various pesticides adsorbed or dissolved in the wax layers of vegetables and fruits, and even for pesticide residue penetrating into epidermal tissue cells, and can reduce the pesticide residue rate in the vegetables and the fruits by 60-90%, wherein the removing rate of phoxim is higher than 80%. The vegetable detergent can also be used for toxicity removal of tea leaves and used for washing of tableware. The vegetable detergent is prepared from components harmless to human bodies, and is safe, nontoxic, and free of destroy to natural flavor and nutritions of the vegetables and the fruits. The vegetable detergent has characteristics of simple preparation method, easily available raw materials and significant toxicity removal effects.

The embodiment of the invention provides a material sorting dedusting system. The material sorting dedusting system comprises a dedusting chamber, a feed inlet, a discharge port, an induced draft fan, an air blower, a dust outlet and a material scattering mechanism. The feed inlet is formed in the upper end of the dedusting chamber, the discharge port is formed in the lower end of the dedusting chamber, the induced draft fan is connected to the dust outlet through an air-suction pipeline, the material scattering mechanism is provided with an air inlet and an air outlet, the air inlet is connected to the air blower through an air inlet pipeline, and the material scattering mechanism is arranged at the lower end of the feed inlet.

The invention discloses an efficient fine particulate matter removal device, and belongs to the field of dust removal equipment. The efficient fine particulate matter removal device comprises a tank body, a turbulent flow and sound wave pretreatment area, a turbulent flow and sound wave agglomeration area, an aerosol dust collection area and a sedimentation dust collection area which communicate with one another are sequentially arranged in the tank body from top to bottom, and a sound wave generator is mounted at the top of the tank body; and a first inlet pipe is arranged on one side of the top of the tank body, a second inlet pipe is arranged on the other side of the top of the tank body, the height of the second inlet pipe is lower than that of the first inlet pipe, and an outlet pipe is arranged on one side of the bottom of the tank body. By arranging electrode bars and plate electrodes, aerosol particles entering the tank body can be efficiently and conveniently removed, purification and dust removal of gas are achieved, in addition, fan blade plates are driven through the impact force of the gas, friction type cleaning can be conducted on the inner wall of the top of the tank body and the inner wall of the effect gathering ring, and the cleaning effect is improved. Therefore, the efficient removal effect on the gas is ensured.

The invention belongs to the field of catalyst preparation, and particularly relates to a composite regenerating device and method of a complexing iron catalyst for natural gas desulphurization. The composite regenerating device of the complexing iron catalyst for natural gas desulphurization comprises an electrolysis power source, an electrochemical anode, an electrochemical cathode, a regenerating reactor and an air inlet pipe. The complexing iron catalyst is contained in the regenerating reactor, the electrochemical anode is connected with the positive electrode of the electrolysis power source, and the electrochemical cathode is connected with the negative electrode of the electrolysis power source. The electrochemical cathode is provided with the air inlet pipe and a plurality of air outlet holes which are evenly distributed in the circumference. According to the composite and efficient regenerating method, the electrochemical oxidation complexing iron catalyst regeneration technology and the air oxidation complexing iron catalyst regeneration technology are compounded, the catalyst can be regenerated rapidly in the liquid phase oxidation-reduction process, catalyst oxidation regenerating efficiency can be improved, a more efficient hydrogen sulfide removing effect can be achieved, energy consumption and agent consumption are lowered in the complexing iron liquid phase oxidoreduction technology, and the device scale is decreased under the same treatment scale.

The invention aims to provide a device and a method for online removal of coke powder from tower-top oil gas. The device and the method can effectively reduce the coke powder to enter a fractionatingtower and block a tower tray, and can avoid coking products from carrying the coke powder to enter a downstream device; thus, the catalyst activity of a downstream refining device and the long-periodoperation of the device are influenced. The device comprises a cyclone separator and a coke powder discharging system, wherein the cyclone separator comprises a separator tank body and a plurality ofcyclone single pipes; the plurality of cyclone single pipes are connected with and mounted in the separator tank body through supporting plates; the coke powder discharging system comprises a coke powder bin and a pressure balance pipe; the top part of the coke powder bin is connected with the bottom part of the cyclone separator through a star-shaped valve and a first gate valve; the pressure balance pipe is connected with the upper part of the coke powder bin, so the coke powder bin is connected with an oil-gas pipeline; the bottom part of the coke powder bin is connected with a discharge gate valve; and a pressurized gas inlet is also arranged at the upper part of the coke powder bin.

The invention relates to a method for preparing a biological composite carbon source from citric acid fermentation wastewater and application of the biological composite carbon source. In the preparation process, the citric acid fermentation wastewater is used as a raw material and is mixed with crude glycerin to prepare the biological composite carbon source, and the biological composite carbon source is used as a carbon source in the wastewater denitrification process and has an efficient removal effect on nitrogen and phosphorus in the denitrification process. When the biological composite carbon source is prepared, a phosphorus source and a magnesium source are added after fermentation, struvite sediment is generated, and the struvite sediment is an excellent nitrogen-phosphorus fertilizer and can be recycled as a resource.