30results about How to "Reduce the risk of polluting the environment" patented technology

The invention relates to a method for recovering copper zinc nickel from heavy metal sludge by using copper smelting waste acid, which comprises the following steps: 1)leaching; 2)purifying and removing impurity; 3)extracting copper and electrically depositing copper; 4)neutralizing and removing iron; %)extracting zinc, neutralizing and purifying a zinc strip liquor, and electrically depositing zinc; 6)extracting nickel, electrically depositing nickel; and depositing alkali. According to the invention, valuable metals such as copper, zinc and nickel can be recovered step by step from the heavy metal sludge by using the copper smelting waste acid, the comprehensive recovery can reach 97%, the sewage and sludge can reach a discharge standard, and the obtained product can be directly taken as a raw material of the copper material for reuse. According to the method, the localization treatment of the dangerous waste can be realized, and the method and has economic, environmental and social benefits and wide application prospect.

The invention relates to waste water processing technology, and concretely relates to a method for processing titanium-containing organic matter-containing waste acid water from a polyolefin catalyst. The processing method is characterized in that a diffusion dialyzer is used for separating hydrochloric acid in the titanium-containing organic matter-containing waste acid water from the polyolefin catalyst to obtain hydrochloric acid and raffinate, titanium in the raffinate is conversed to a titanium dioxide solid for recovery by neutralizing, and finally a Fenton oxidation method is used for removing the organic matter in the raffinate which is used for filtering the titanium dioxide solid. The processing method fully realizes the resource recovery and reduces the risk of environment pollution.

The invention discloses a method for stabilizing waste incineration fly ash, which belongs to the technical field of environmental engineering. The present invention uses dialkyl dithiophosphate compounds or adding flocculants as stabilizers, and the treatment method is: take the above stabilizers and dissolve them in water to make a solution, then add them into fly ash, stir evenly, and form a thick mortar mixture , landfill after natural drying. The weight ratio of the dialkyl dithiophosphate compound to the flocculant in the stabilizer is 100:4 to 100:10, and the weight ratio of the dialkyl dithiophosphate compound to the waste incineration fly ash is 0.5:100 ~3:100, the weight ratio of water to fly ash is 0.7~1.0:1. The main advantages of the present invention are that the dialkyl dithiophosphate compounds have strong chelating ability with heavy metal ions, and the price is low, and the leaching concentration of the stabilized fly ash under the condition of pH 1-13 can satisfy the identification of hazardous wastes Standard, no secondary pollution.

The invention relates to an aerated concrete block and a preparation method thereof, belonging to the technical fields of comprehensive metallurgy solid waste resource utilization and novel energy-saving construction material industries. In order to treat and utilize coal ash to the maximum limit, the coal ash addition amount in raw material proportion is increased, the coal ash addition ratio is increased to be 75-80% from 70-72%, various technique parameters are matched and adjusted, the raw material machining process is improved, the aerated concrete block is prepared from the following raw materials in percentage by mass: 75-80% of coal ash, 15-20% of quick lime, 1-2% of cement, 2.0-3.0% of desulfurization gypsum and 0.8-1.0% of Al powder through processes of machining raw materials, blending the raw materials, stirring, casting, standing, demolding, cutting, steaming and compressing, and maintaining. The production and operation cost of comprehensive coal ash utilization enterprises is lowered, the disordered pouring and discharge amount of the coal ash is reduced, and the risk that the environment is polluted by the coal ash is reduced.

The invention relates to a method for preparing animal blood plasma albumen powder, which comprises a process system consisting of animal blood anticoagulant treatment, blood refrigeration, centrifugal separation, membrane concentration, spray drying and tail gas recycling. The method comprises the following steps of: performing anticoagulant treatment on the fresh animal blood with a compound anticoagulant liquid, refrigerating, performing centrifugal separation on the refrigerated product and obtaining blood plasma liquid; performing membrane concentration on the blood plasma liquid, allowing the obtained product to flow to a tail gas recycling device for spray drying, and absorbing blood plasma albumen powder and afterheat in the dry tail gas; performing micropore filtration and spray drying, and obtaining the high-quality animal blood plasma albumen powder. Waste gas generated by the treatment of the tail gas recycling device is directly discharged into the air. The process methodreduces the ash content of the animal blood plasma albumen powder from 12 percent to 8 percent, removes odor and increases the spray drying recovery rate from 98 percent to 99.5 percent, so that resources are saved, drying energy consumption is reduced, and the risks of polluting environment are reduced.

The invention belongs to the technical field of sample detection, and specifically relates to an anti-pollution sample processing system. Micro magnets are arranged in the sample liquid in the storage tube, mounting plates are arranged on the front and rear sides of the reaction tube base, and The middle part of the reaction tube is provided with a rotating shaft, and the base of the reaction tube is installed on the mounting plate through the rotation of the rotating shaft, and a driven gear is installed on one side of the rotating shaft, and the driven gear is meshed with a driving gear, and the driving gear is installed on the output shaft of the rotating motor , the rotating motor is installed on the mounting plate, there are crane guide rails on the front and rear side walls of the operating room, two cranes are installed on the two crane guide rails, and the front and rear sides of the lower surface of the crane There is an electric telescopic rod, and the lower end of the electric telescopic rod is connected with the mounting plate. The present invention comprehensively uses the thermal deformation-magnetic cap opening method and the micro magneton transfer method to replace the traditional puncture sampling technology, so as to avoid the problem of pathogen leakage during the pulling out of the puncture needle.

The invention provides an anti-salt thickening agent, an anti-salt type recoverable fracturing fluid containing the same, and a preparation method of the fracturing fluid. An anti-salt thickening agent aqueous solution is prepared firstly, then a thickening agent dissolving-promoting solvent is added to the anti-salt thickening agent aqueous solution to make the solution swelled, then a cleanup agent, an antiswelling agent, a cross-linking accelerant and a cross-linking agent are added, crosslinking is performed, and thus the anti-salt type recoverable fracturing fluid is prepared. The anti-salt type recoverable fracturing fluid has good anti-salt performance, can be applied in high-mineralization-degree stratum water, can be applied for secondary crosslinking after flowback treatment, and has the advantages of good temperature resistance, better viscoelasticity, low damage rate, and good compatibility after being matched with stratum water of different region blocks. The invention also provides an application of the anti-salt type recoverable fracturing fluid. The anti-salt type recoverable fracturing fluid is applied in the high-mineralization-degree stratum water, can reduce flowback of dangerous pollution sources, reduces risk of environmental pollution, reduces consumption of water resources, and has important significance on maintaining the ecological environment.

The invention discloses a fleece pasting tool, which comprises: a bottom frame, a first positioning frame and a second positioning frame are provided on the upper surface of one side of the bottom frame, a first positioning plate and a second positioning plate are provided in the middle, and The other corresponding edge of the underframe is provided with a first limiting plate, which forms a first limiting space for accommodating rubber strips between the first limiting plate and the upper surface of the underframe; the first positioning frame is provided with a belt There is a first rotating shaft with a clamping portion, through which the first positioning rod is connected, and the end of the first positioning rod is located above the first positioning plate; the second positioning frame is provided with a second rotating shaft, the A clamping part is provided on the second rotating shaft, and the second positioning rod is connected and fixed through the clamping part. The end of the second positioning rod is located under the second positioning plate, and the rubber strip passes under the second positioning plate. The ends of the two positioning rods press against the rubber strip; the ends of the first positioning rod and the second positioning rod are provided with sticking wheels, through which the fluff is pasted on the rubber strip.