31results about How to "Reduce the amount of pollutants" patented technology

The new process for treating acidic waste water containing non-ferrous metal ions includes two-stage treatment method, one of them adopts lime neutralization treatment step, the lime milk can be added into said acidic waste water to make the pH value of waste water up to 7.5-9, and another method is a ferric polysulfate precipitation treatment step, the ferric polysulfate is added into the supernatant fluid of the waste water, and the pH value of said waste water can be up to 7.5-9.

The invention discloses a riparian zone sewage reduction method, particularly a riparian zone sewage reduction method by combining a perennial vegetation zone and an infiltration reinforcement zone. The method comprises the following step: arranging an infiltration reinforcement zone and a perennial herb sewage interception buffer zone for the riparian zone, wherein the sewage interception buffer zone is composed of a hygrophytic herb zone, a mesozoic herb zone and a xeromorphic herb zone which are sequentially arranged from the riverbank to the place far away from the riverbank, a reaping mode is adopted to reduce the growth of the annual herbs, and the infiltration reinforcement zone is arranged between the hygrophytic herb zone and the mesozoic herb zone. The method can effectively intercept sewage and increase the infiltration amount of underground water; and the perennial herbs have developed root systems, so the reasonable arrangement of the perennial herbs is beneficial to enhancing the sewage interception capacity and water/soil retention capacity of the riparian zone. By sectionallly planting and arranging the hygrophytic, hygrophytic and xeromorphic perennial herbs, the vegetation can be regulated to enhance the sewage interception capacity of the riparian buffer zone.

The invention relates to a double-bed gasification device, which includes: a pyrolysis furnace, a gasification furnace and a pyrolysis gas condensation separator, and re-adds the difficult-to-use low-quality tar produced by pyrolysis into the high-temperature gasification furnace to generate synthetic gas Or water gas, and reduce the tar component in the generated synthetic gas or water gas, improve the gas quality, reduce the amount of pollutants in the gas, and reduce the difficulty of subsequent gas treatment. At the same time, after the pyrolysis gas is cooled and liquefied, only the liquefied tar enters the gasifier again for re-gasification, and the pyrolysis coal gas of hydrocarbon-rich substances that cannot be gasified no longer participates in the gasification but directly interacts with the generated The mixed gas and water gas are mixed to form a mixture, thereby reducing the damage to the hydrocarbons in the pyrolysis gas, and these hydrocarbon-rich substances are transferred to the mixed gas, which greatly improves the calorific value and quality of the gas.

The invention discloses a centrifugal separation type sewage treatment device, which comprises a tower body, wherein the side surface of the tower body is sequentially connected with a secondary purification box and a suspension matter removal box through pipelines; the top of the tower body is provided with a plurality of water inlet pipelines; the water inlet pipelines are vertical pipelines; afirst motor is arranged in the center of the top of the tower body; the output end of the first motor extends into the tower body and is provided with a rotating shaft. The centrifugal separation typesewage treatment device has the advantages that a centrifugal barrel is arranged in the tower body; the solid liquid separation is realized; before aeration, the dissolved oxygen content of sewage isgreatly increased; the decomposition of organic pollutants is effectively accelerated; further, the treatment efficiency is improved; the targeted treatment is performed through the secondary purification box; further, the problem of inorganic pollutants is solved; through the arrangement of the suspension matter removal box, residual tiny suspension matters are subjected to slag scraping treatment; the amount of pollutants in the treated sewage is enabled to be below than national emission standards; the treatment efficiency is high; the time is short; the centrifugal separation type sewagetreatment device is suitable for being widely popularized.

The invention relates to a coating production line and particularly relates to a coating water purification system which is realized by the following technical scheme that: the coating water purification system comprises a raw water tank, a raw water pump connected with the raw water tank, a mechanical filter connected with the raw water pump through a pipeline I, an active carbon filter connected with the mechanical filter, a high-pressure pump I connected with the active carbon filter through a pipeline II, and a reverse osmosis set I connected with the high-pressure pump I. Compared with the background technology, the coating water purification system is more energy-saving and environment-friendly and has lower cost.

The invention discloses a pollutant-intercepting gutter inlet which comprises a gutter inlet (5) and a rainwater strainer (2) mounted on the gutter inlet (5), and is characterized in that an intercepting weir (3) is arranged on a slope section at the periphery of the gutter inlet (5); and the intercepting weir (3) winds around the periphery of the gutter inlet (5). The pollutant-intercepting gutter inlet has the advantages that the bias of a pollutant-intercepting technology in the gutter inlet is overcome, small particle solid pollutants and large pollutants are intercepted outside the gutter inlet, the quantity of pollutants entering the gutter inlet is reduced, the blockage of an urban rainwater pipe network system is reduced, the pipeline dredge frequency is reduced, and the gutter inlet is conveniently maintained and managed.

The invention relates to the technical field of metal conductor processing, in particular to a production process of a copper coated aluminum-magnesium bimetallic conductor, solving the technical problems of unreasonable prior art and the like. The production process comprises the following steps of: A, surface preprocessing; B, zinc deposit preprocessing; C, cyanogens-free nickel preplating; D, silicate copper plating; and E, postprocessing. The production process of the copper coated aluminum-magnesium bimetallic conductor has the advantages that: 1, the surface activity of an aluminum-magnesium alloy is better regulated, operation quality in a subsequence electroplating process and stability in a drawing process are ensured; 2, the problem of broken wires of electroplating intermediate products in a subsequent drawing process is solved, yield of final products is increased; and 3, electroplating is carried out by adopting a pulse modulation power supply, a microstructure of electrocrystallization copper is improved, compactness of a copper coating is improved, and hydrogen evolution side reaction is inhibited.

The invention relates to a method for crystallizing amorphous silicon thin films in a multi-cycle rapid thermal annealing auxiliary metal induced mode, and belongs to the technical field of polycrystalline silicon thin film preparation processes. The amorphous silicon thin films are deposited on a glass slide substrate with a vapour deposition method; nickel chloride is dissolved into mixed solution of ethyl alcohol and toluene, and ethyl cellulose is added in to form a viscid and thick solution; spinning coating is performed on the solution, and then annealing is performed on the solution at 400 DEG C for two hours; then rapid thermal annealing processing is performed, the temperature rising rate is about 150-200 DEG C/s, temperature of thin film samples is raised to about 600 DEG C from the room temperature, the 600 DEG C is kept for 15s, then natural cooling is performed, and next-time rapid thermal annealing processing is performed after the temperature of the thin films is lowered to the room temperature; the amorphous silicon thin films can be crystallized after three times of rapid thermal annealing. Compared with a traditional solid-phase crystallizing method and a conventional metal induced crystallizing method, the method has the advantages that annealing temperature is lowered, residual metal pollutant amount is reduced, the annealing time is shortened, and the method is simple in process and low in cost.

The invention discloses a system for purifying a sewage lake through plant activity. The system comprises an emergent aquatic plant area, a submerged plant area, a floating device, a bottom mud treatment device and a purifying layer arranged at the bottom of the lake, wherein the purifying layer comprises a deamination padding layer, an auxiliary dephosphorization padding layer and a denitrification padding layer, the bottom mud treatment device is located under the floating device and connected with the floating device through a stainless rope, and the bottom mud treatment device makes contact with mud at the bottom of the lake; the floating device floats on the water surface, a plurality of through holes are formed in the surface of the floating device, and aquatic plants are planted inthe through holes. According to the system, namely a system for purifying water through plant absorption and microorganism biological film conversion effects, synchronous removal of ammonia nitrogen,total nitrogen and total phosphorus can be achieved, the bottom mud treatment device facilitates clearing of bottom mud and purifying of overlying water, the amount of pollutants released by bottom mud is reduced, and meanwhile, hollow ball filter materials on the upper layer can also remove floating suspended materials generated by bottom mud disturbed by aeration.

The invention discloses a self-cleaning sewage treatment device. The self-cleaning sewage treatment device comprises a tower. A suspended-solid removing box is connected to the tower through a pipeline. A water inlet is arranged at the top of the tower. A horizontal splitter plate is arranged on the inner upper part of the tower. Two rotating plates with arc-shaped front ends are arranged on the splitter plate, and are rotationally connected with the splitter plate through rotating shafts. The rotating shafts are driven to rotate by a motor. A primary separation net and a secondary separationnet are arranged on the splitter plate. The self-cleaning sewage treatment device has the advantage that the double separation nets are arranged on the inner upper part of the tower, and a cleaner isarranged on each separation net correspondingly, so that solid impurities are cleaned automatically while solid and liquid separation of sewage is realized, and continuous treatment efficiency is improved greatly; through the suspended-solid removing box, residual small suspended solids are subjected to slag scrapping treatment, and accordingly, the amount of pollutants in the treated sewage is much lower than national emission standards; treatment efficiency is high, time is short, and the self-cleaning sewage treatment device is suitable for vigorous popularization.

The invention relates to a method for treating contaminants emitted by a vehicle having a heat engine, in which a catalytic device (3) is heated, characterized in that the amount of oxygen (OS) in the catalytic device (3) is controlled to exceed a minimum amount of oxygen (OS1) by injecting air upstream of the catalytic device (3).

The invention discloses a quantitative feeding device for an aluminum electrolytic cell. The quantitative feeding device comprises a discharging device arranged over an electrolytic cell hopper in the aluminum electrolytic cell, a feeding and conveying device arranged above the discharging device and a power source connected with the discharging device and the feeding and conveying device at the same time. The discharging device comprises a discharging hopper, a rotary weighing cone arranged at the bottom of the discharging hopper, a discharging motor arranged on the outer side of the discharging hopper and connected with the rotary weighing cone and the power source. The discharging hopper is further provided with an anti-accumulation cone. A pressure-sensitive delay control circuit is further arranged between the power source and the discharging motor. By means of the quantitative feeding device for the aluminum electrolytic cell, precise feeding can be well guaranteed each time, consumption of materials and output of pollutants are lowered greatly, production devices can be well protected, and the service life of the production devices is prolonged.

The invention provides polyester derivative grease based on waste cooking oil and a preparation method thereof. According to the preparation method provided by the invention, a NaOH solution is used for hydrolyzing the waste cooking oil, so a large amount of sodium aliphatate can be obtained, the effect of a subsequent esterification reaction is improved, a product with simple components and highstability is obtained, and the loss of the waste cooking oil and the amount of pollutants to the environment are reduced; fatty acid obtained after acidification and neopentyl glycol are subjected toan esterification reaction under the action of a solid acid catalyst, and compared with other alcohol raw materials, esterification effect can be effectively improved, soap products are prevented frombeing formed, and the yield of ester products is increased; and then, an epoxidation reaction and a ring-opening reaction are carried out, so the polyester derivative grease with the characteristicsof high viscosity, high flash point, high thermal stability and relatively simple components can be obtained, and the polyester derivative grease has good biodegradability and can be used as lubricating oil base oil.

The invention provides a plasma ceramic sterilization faucet, and relates to the technical field of plasma sterilization. The faucet comprises a water inlet end and a water outlet end, wherein the water inlet end and the water outlet end communicate through a first pipeline and a second pipeline, a first valve is arranged at the intersection position, close to the water inlet ends, of the first pipeline and the second pipeline, the water outlet end is provided with a second valve, the first pipeline is provided with a communication port connected with a plasma generation module, the air inletend of the plasma generation module is connected with an air pump, a first air inlet of the air pump is connected with an air supply module, the air supply module comprises an oxygen supply device andan argon supply device, the oxygen supply device and the argon supply device are connected with the air pump through a three-way pipeline, flow valves are arranged on air inlet pipelines connecting the three-way pipeline and the oxygen supply device and the argon supply device, and the first pipeline is provided with a water flow monitoring module and a controller. The problem that in prior art,faucet does not have disinfection sterilization function and cannot meet requirement for water use in special places such as hospitals and laboratories is solved.