36results about How to "Promote electrode reaction" patented technology

The invention provides a dye waste water treatment system which sequentially comprises a physico-chemical pretreatment system, an anaerobic tank, an aerobic tank and an advanced oxidation treatment system; dye waste water to be treated firstly enters into the physico-chemical pretreatment system to remove part chromaticity, sulphate and COD in the dye waste water, so as to ensure the pH, the alkalinity and the proper sulfate concentration which are needed by high-efficiency and stable running of later stage of anaerobic technique; after that, the dye waste water enters into the anaerobic tankto have anaerobic reaction and then enters the aerobic tank to have aerobic reaction; finally, the dye waste water enters into the advanced oxidation treatment system to remove the residual chromaticity and organic matter hard to degraded in the aerobic effluent as well as intermediate metabolite generated in the process of biological treatment. When being used for treating the dye waste water, especially the waste water having high salinity, sulfate, chromaticity and COD as well as higher concentration organic matter hard to degraded, the combined system has good treating effect and ensures the finally yielding water to reach the first-grade standard in GB4287-92 pollutant emission standards for textile dyeing and finishing industry.

The invention discloses a suspended electrobiological filler for removing ammonia nitrogen from water and a preparation method for the suspended electrobiological filler. The suspended electrobiological filler comprises the following components in percentage by weight: 10 to 20 percent of iron powder, 10 to 20 percent of graphite powder or activated carbon powder, 1 to 2 percent of alumina, 1 to 2 percent of nickel oxide, 1 to 2 percent of titanium oxide, 1 to 2 percent of thallium oxide, 1 to 2 percent of iridium oxide, 20 to 30 percent of molecular sieve material, 5 to 10 percent of adhesive and 20 to 30 percent of hollow glass microspheres. The preparation method comprises the following steps of: mixing the raw materials, putting into a reaction kettle, mixing, stirring uniformly, adding the adhesive and water, preparing paste with the water content of about 20-30 percent, granulating by using a granulator or pressing into granules and blocks in a molding machine, demoulding, feeding into a baking oven, and drying at the temperature of 100 to 180 DEG C for 3 to 4h to obtain the suspended electrobiological filler. The invention also provides application of the suspended electrobiological filler. The suspended electrobiological filler can effectively remove the ammonia nitrogen from the water; and in the upgrading reconstruction of industrial wastewater treatment stations, water works and municipal sewage treatment plants, the removal efficiency of the ammonia nitrogen in the water can be improved by 15 to 40 percent, and the total discharge amount of the ammonia nitrogen and nitrate nitrogen can be controlled.

The invention discloses a method for producing an aluminum-magnesium alloy by utilizing a liquid aluminum cathode method. The method is used for high-efficiently producing the high-quality aluminum-magnesium alloy. The method comprises the following steps of dissolving the high-purity magnesium oxide (MgO) in an electrolyte system consisting of Na3PO3-MgF2-NaCl in an electrolytic cell under the electrolytic temperature of 850DEG C to 900DEG C, wherein the aluminum liquid which is formed by melting a high-purity aluminum ingot is used as a liquid cathode; and applying a coil magnetic field with the intensity of 30mT to 40mT outside the electrolytic cell so as to enable the aluminum liquid to rotate under the electrolytic conditions that the anode current density is 0.47 to 0.52A/cm<2> and the high-purity graphite is adopted as an anode, reducing the magnesium ions on the rotating aluminum liquid cathode into elemental magnesium under the electromagnetic stirring effect to be uniformly dispersed into the aluminum liquid so as to form the aluminum-magnesium alloy product, and producing CO2 gas on the anode. The alloy prepared through the method is uniform in components and contains no impurity. The production process is continuous and easy to control.

The invention provides a dye waste water treatment method, comprising a materializing pre-treatment, an anaerobic treatment, an aerobic treatment, and an advanced oxidation treatment carried out in sequence, wherein the method comprises the steps of conducting a materializing pre-treatment to the object dye waste water to get rid of a part of chromaticity and COD for the anaerobic treatment and aerobic treatment, and then conducting an advanced oxidation treatment to the water discharged from the aerobic treatment to finally remove the degradation-refractory pollutant at the end of the waste water treatment and the intermediate metabolized substances produced in the process of biological treatment. Through the combined process of materializing pre-treatment, anaerobic treatment, aerobic treatment and advanced oxidation treatment, the invention can effectively treat difficultly degraded dye waste water and reduce the operation cost, thereby being capable of standardizing the indexes such as COD and chromaticity of the discharged water to the national norm simultaneously, solving the domestic current situation of difficulties in treating dye waste water, and being capable of meetingthe requirements of upgrading and restructuring the sewage treatment plant according to the increased standard of environment protection in the future.

Methods for generating electric power and a discharge fluid from an oxidant and a reducer using a discharge system, and regenerating an oxidant and/or the reducer from the discharge fluid using a regeneration system are provided. A discharge unit of the discharge system generates electric power and the discharge fluid by transferring electrons from a positive electrode of a 5-layer electrolyte-electrode assembly (5EEA) to an aqueous multi-electron oxidant (AMO) and from a reducer to a negative electrode of the 5EEA. The regeneration system neutralizes the discharge fluid to produce a salt form of the discharge fluid. The regeneration system electrolyzes the salt form of the discharge fluid into an intermediate oxidant in an electrolysis-disproportionation reactor and releases the reducer, while producing the AMO by disproportionating the intermediate oxidant. The regeneration system converts a salt form of the AMO into an acid form of the AMO in an ion exchange reactor.

The invention belongs to the technical field of treatment of nitrobenzene wastewater, and particularly relates to a method and device for treating nitrobenzene wastewater through an ultrasonic wave/iron-carbon micro-electrolysis-Fenton oxidation method. The problems in the prior art that efficiency is low when organic pollutant in wastewater is treated only through ultrasonic waves, when a traditional iron-carbon micro-electrolysis-Fenton method is directly used for treating wastewater, along with delay of treating time, due to passivation of iron-carbon micro-electrolysis filler, the treating efficiency is greatly lowered, and anodic reaction is weakened are solved. The method comprises the steps that nitrobenzene wastewater is treated through ultrasonic waves and iron-carbon micro-electrolysis, and nitrobenzene difficult to degrade is reduced to be aniline easy to degrade; after micro-electrolysis is finished, wastewater is placed into a stirring reaction pool, H2O2 is added into wastewater to be combined with Fe2+ in wastewater to form a Fenton reagent, and wastewater is further oxidized and degraded. The reaction speed of iron-carbon micro-electrolysis is improved by 6-10 times on the whole, the concentration of free Fe2+ in wastewater is improved by 5-8 times, and H2O2 needed by the follow-up Fenton oxidization method is greatly reduced.

The invention discloses a lithium ion battery with adoption of secondary electrolyte injection, comprising a positive pole, a negative pole, a diaphragm, an electrolyte and an outer package. In the process of manufacturing the battery, the secondary electrolyte injection is adopted; the electrolyte solvent in the first electrolyte injection is one or a combination of more than one of EC (ethylene carbonate), PC (propylene carbonate), DMC (dimethyl carbonate), DEC (diethyl carbonate), EMC (ethyl methyl carbonate), Gamma-BL (butyrolactone), MF (methyl formate), MA (methyl acetate), EP (ethyl propionate) and THF (tetrahydrofuran) and does not contain acetonitrile and propionitrile; the secondary electrolyte injection is conducted after the formation; and the used electrolyte in the secondary electrolyte injection contains at least one of the acetonitrile and the propionitrile. The electrolyte containing the at least one of the acetonitrile and the propionitrile has the advantage of high normal-temperature conductivity (10-50mS/cm) and low-temperature conductivity (4-20mS/cm at the temperature of -20 DEG C), thereby exceeding the level of an existing electrolyte.

The invention provides a scanning type laser-assisted micro-arc oxidation device and method. The device is not limited by the size of the electrolytic cell and does not require power supply of ultra-high power and can perform local strengthening or repairing treatment so as to reduce the energy consumption, improve the film forming efficiency and the film layer quality, reduce micro-arc oxidationarcing voltage and energy consumption, perform micro-arc oxidation more easily and enter a film forming stage more quickly, realize machining of large-size workpieces or workpieces with complex moldedsurfaces, solve the problems of the area effect and point discharge in the traditional machining device, the reduce limitation of the workpiece size on the power output power and realize micro-arc oxidation of a specific area controlling an inter-electrode electric field.

The invention discloses a microelectrolysis filler for treating printing and dyeing wastewater. The microelectrolysis filler is a ternary filler based on Fe, C and Al and contains the following components in percentage by weight: 15%-25% of iron, 30%-40% of activated carbon, 15%-25% of aluminum, 20%-30% of clay and 0-10% of sodium carboxymethylcellulose. The ternary microelectrolysis filling based on Fe, C and Al is used for directly treating the printing and dyeing wastewater, so that the technical process is simplified, meanwhile, the use amounts of acid-base reagents are reduced, and the cost is effectively saved.

An electrolysis device of the present invention includes an electrolysis unit. The electrolysis unit includes a channel for fluid to be treated, at least one electrolysis electrode pair, a flow inlet, and a flow outlet. The electrolysis electrode pair is disposed so as to incline with respect to a vertical direction and includes an upper electrode and a lower electrode disposed so as to face each other. The channel for fluid to be treated is disposed so that a fluid that has flowed in from the flow inlet flows through an interelectrode channel between the upper electrode and the lower electrode from a lower side to an upper side and flows out from the flow outlet.

An electrode for redox flow batteries is produced using a carbon catalyst for redox flow battery electrodes, the carbon catalyst being a particulate carbon catalyst and consisting of carbonaceous particles having a specific surface area of 800 to 2000 m²/g and an average particle size of 100 to 1000 nm.