39results about How to "To achieve the purpose of resource reuse" patented technology

The invention relates to a method of rapidly removing harmful substance in waste incineration fly ashes. The method includes the following steps of preparing the waste incineration fly ashes and the clean water, rapidly mixing the waste incineration fly ashes and the clean water and extracting the mixture under a low liquid-solid ratio, allowing the fly ash mud to stand and then dipping and extracting the mud, and carrying out the solid-liquid separation of the fly ash mud. After the above steps, the waste liquid is processed by a waste processing device, and the dehydrated fly ashes are dried and smashed. At the end, the toxicity characteristic leaching procedure leaching value and the Dioxin total value of the smashed fly waste ashes are detected, if the values are qualified, the smashed fly waste ashes are harmless and can be used once again, if the values are not qualified, the waste fly ashes are returned back to the fly ashes step. The invention takes the clean water as the extractant, and extracts the waste incineration fly ashes under the low liquid-solid ratio and the high speed stirring conditions, so the fly ashes can be released easily and can generate high concentration hydroxide ions in a liquid, and harmful solid substance can be changed into the water-soluble substance, and the harmful substance in the waste incineration fly ashes can be removed rapidly and effectively, and consequently the target of harmless fly ash recirculation is reached.

The invention relates to a method for rapid, high-efficiency and selective degradation of trace benzopyrene in water. The method comprises the following steps: cutting trace-benzopyrene-containing wastewater having undergone biochemical treatment into water films with a filling material in a catalytic ozonation reactor; allowing the water films to contact with ozone or ozonized air flowing along a reverse direction and to be dissolved; and selectively degrading trace benzopyrene in the wastewater under the preferential adsorption and catalytic oxidation coupling effects of a molecular imprinting filling material. According to the invention, molecular imprinting technology and catalytic ozonation technology are combined, and trace benzopyrene in the wastewater is rapidly, highly efficiently and selectively treated; the absorption rate of ozone is more than 90% in 10 min in the catalytic ozonation reactor, so the removal rate of trace benzopyrene is more than 99%. The method can be widely applied to deep and recycling treatment of a variety of sewage and wastewater containing benzopyrene.

The invention relates to a method for preparing a microbial flocculant form potato starch wastewater as a raw material. The method comprises the following steps of: (1) screening a microbial flocculant strain Candida anglica; (2) preparing primary seed solution of the strain Candida anglica; (3) preparing a fermentation medium; (4) preparing fermentation liquor with flocculation activity; and (5) purifying, extracting, freezing and drying the fermentation liquor with flocculation activity to obtain a crude extract of the flocculant. The method is simple in process, short in fermentation period and easy to implement, has remarkable environmental and economic benefits, and is suitable for industrial production and popularization.

The invention belongs to the field of cutting mechanical devices, and specifically discloses a cutter which comprises a cutter body, a first bracket and a second bracket, wherein a control box is arranged on the first bracket; a switch is arranged in the control box; the switch is in series connected with the cutter body; a paraffin plate is arranged between the first bracket and the second bracket; a cavity is formed in the second bracket; one end of the paraffin plate extends into the cavity; the other end of the paraffin plate is equipped with a metal sleeve; the metal sleeve is rotatably connected with a rotary cover; the rotary cover is rotatably connected with a hollow shaft sleeve; the hollow shaft sleeve is fixedly connected on the control box; a through hole is formed in the paraffin plate; the metal plate sleeve, the rotary cover and the hollow shaft sleeve penetrate through the through hole; an insulated wire is arranged in the through hole; one end of the insulated wire is fixedly connected on the second bracket; and the other end of the insulated wire is connected with the switch. According to the scheme adopted by the invention, the invention provides the cutter which has a safe function, and does not affect normal use of workpieces.

The invention relates to a method for utilizing vanadium in steel slag, and belongs to the technical field of metallurgy. The specific process is as follows: conveying steel slag of generated by steel discharge of a converter into a refining LF furnace, adding lime and fluorite, and adding a reducing agent to reduce vanadium oxide in the slag; meanwhile, using an LF furnace electrode to supplement heat, and adjusting argon flow to increase the interfacial reaction of the steel slag after heating, to promote the reduction reaction. During steel discharge of the converter, the discharge quantity of the steel slag is increased, the refining LF furnace is used for reducing the vanadium oxide in the steel slag, the vanadium oxide in the steel slag is reduced to be lower than 0.03%, the vanadium recovery rate in molten steel is 0.008-0.015%, the recycled phosphor is not larger than 0.003%, vanadium is used for alloying steel to achieve the purpose of resource recovery, the requirements of a smelting process can be satisfied, and an obvious effect is achieved.

The invention relates to a method for preparing a potash fertilizer by utilizing low-heating-value potassium-rich coal gangue. The method comprises the following steps of: smashing and deironing the coal gangue to obtain potassium-rich coal gangue powder with low iron content, mixing and roasting the potassium-rich coal gangue powder and industrial pure sodium hydroxide at the temperature of 500-650 DEG C, stirring and mixing the roasted clinkers with water, and standing, ageing, filtering the roasted clinkers and the water to obtain a filter cake and a mother liquor containing potassium. The mother liquor containing potassium is subjected to CO2 acidification and neutralization as well as extraction and separation to obtain potash fertilizer K2CO3. The method can be used for obtaining by-products, namely ferrisulphas purifier and a raw material SiO2 which can be used for ceramics or fireproofing materials. The raw material SiO2 contains a certain amount of pulverized coal, has a certain heating value and can be used for reducing the energy consumption in the production process of the ceramics or the fireproofing materials. The method can be used for fully utilizing the main valuable elements in the low-heating-value potassium-rich coal gangue, is simple in technological process and is free from environment pollution and secondary trash discharge; and the raw materials used by the method are industrial waste and are wide in source, and thus the method is convenient to implement and popularize.