49results about How to "Short governance time" patented technology

The invention concerns the repairing dose to repair the soil polluted by heavy metal, which belongs to the technique field of repairing soil polluted by heavy metal. The repairing dose mainly includes: Na unit soil, haibao stone, stick stone, coal powder and microorganism germ root. Every composition' rate by weight is: Na unit soil15--40%, haipao stone 10--50%, stick stone 10--30%, coal powder 5--30%, microorganism germ root 0--40%. The repairing dose in the invention has the advantages of low cost of material, simple working equipment, good effect and no second pollution.

The invention discloses a coal mine underground coal seam long drill hole staged fracturing permeability increase and gas extraction method. The coal mine underground coal seam long drill hole stagedfracturing permeability increase and gas extraction method comprises the steps that a long drill hole with the length more than 100m are drilled into a coal seam using a underground tunnel drilling machine for a coal mine or a kilometer drilling machine; a rigid casing with an one-way valve is lowered into to protect the hole directly using the underground tunnel drilling machine or the kilometerdrilling machine, and casing centralizers are installed at regular intervals; after the casing is lowered, preset volumetric cement paste is injected into an annular space between the outer wall of the casing and a drill hole wall to carry out blocking and sealing; a rigid fracturing pipe with two or multiple packers is lowered into the casing to carry out coal seam staged fracturing step by stepor multistage staged fracturing; and the fracturing pipe and the packers are removed after staged fracturing permeability increase, the casing of coal seam long drill hole opening is accessed with a gas extraction pipeline after drainage finishes to carry out efficient extraction of gas. The engineering amount of a tunnel and hole-drilling can be greatly reduced, the coal seam gas extraction efficiency is improved, and the coal mine underground gas treatment cost is reduced.

This is a gas extraction method for a single burst coal bed of stable coal occurrence, angle less than 10o, and firm index over 0.5. Drill a hole from top working face downward along the coal bed from shallow bed to deep, from low gas concentration zone to high for pre-extraction to lower down the gas concentration.

The invention relates to a method for utilizing and disposing micro-electrolyzed waste residue of organic waste water, a method for immobilizing arsenic and heavy metal in soil and a method for utilizing and disposing micro-electrolyzed waste residue and activated sludge of organic waste water. The invention is characterized in that iron carbon is used as main filler for the micro electrolysis of the organic waste water, the waste residue (solids) produced after the micro electrolysis of the iron carbon is collected, concentrated and mixed with the activated sludge, inorganic/organic mixed restoration agent is prepared after 10-50 days of composting treatment are conducted, the weight of the iron in the restoration agent accounts for (0.5-20) percent of the total weight of the solids, finally deep tillage is conducted to restore the pollution soil after the restoration agent is evenly dispersed in soil, and the weight ratio of the restoration agent to the polluted soil is (0.1-5.0):100.

The invention relates to a device for removing organic pollutants from soil and underground water in situ. The device is characterized by comprising an outer metal pipe (1) and a central metal pipe (2) which are vertically arranged, wherein the tops of the outer metal pipe (1) and the central metal pipe (2) are communicated with a detection ignition device (3); the central metal pipe (2) is communicated with an air inlet pipe (4) at the upper part of soil; the central metal pipe (2) is communicated with a plastic sieving pipe (5) at the lower part of the soil; the outer metal pipe (1) is communicated with an exhausting pipe (6) at the upper part of the soil; and the soil above the outer metal pipe (1) and the central metal pipe (2) is provided with a heat insulation device (7). The device for removing the organic pollutants from soil and underground water in situ has a simple structure and is convenient to set, and is applicable to repairing of almost organic polluted soil and underground water; the device is not influenced by soil properties and underground water distribution; and the pollutants are completely decomposed by the device, secondary pollution is not generated, the management time is short and the repairing cost is acceptable.

The invention discloses a parching method for indoor pollution governance, which comprises room governance. The room governance comprises indoor temperature rise, heat preservation and repeated operation for several times; the volatilization of volatile organic substances contained in facilities in a room is quickened in a heating mode by combining the properties of the volatile organic substances; meanwhile, operation indexes such as heating temperature, heating frequency, heating times and the like are scientifically and reasonably formulated so as to shorten the governance time and improve the governance efficiency when the indoor facilities are not damaged and the governance effect is ensured; the whole method has simple operation and easy implementation; and after the newly-decorated room is governed by adopting the method, the total concentration of the volatile organic substances in the indoor air is equal to or less than 0.6 mg/m<3> through detection according to a national standard detection method.

The invention discloses a bionic denitrification method for wastewater containing low-concentration nitrate and/or nitrite, and belongs to the field of wastewater treatment. Denitrification of a waterbody is realized under the conditions of being close to a natural water body environment and being assisted by illumination. The method comprises the steps: in an anaerobic environment, adding a compound containing a transition metal and a water treatment agent containing a substance with reducibility into a water body containing low-concentration nitrate and/or nitrite, and then carrying out denitrification operation under the irradiation of natural light or simulated sunlight. The method is characterized in that the content of nitrogen in the wastewater containing nitrate and/or nitrite isreduced by controlling the adding amounts of the compound containing the transition metal and a substance with reducibility and controlling the pH value of the solution. According to the method, the advantage of environmental compatibility of biological denitrification is reserved, the time required for water body treatment is shortened, any harmful element is not added into the system in the denitrification process, and the method is an environment-friendly treatment process. The method provided by the invention can also be used for denitrification of nitrogen oxide-containing gas.

The invention discloses a method for determining the position of a shallow buried coal field fire source through surface anomalies. The method comprises the specific steps of surveying the surface anomalies, determining an abnormal area, arranging probe holes and verifying the positions of the probe holes. In the process of surveying the surface anomalies, the coordinates, elevation and position of a survey point are described through surveying of the coal field surface anomalies, handheld GPS positioning, an infrared imager, description of field pictures and temperature measurement of a ground temperature meter. The method is low in cost and fast and accurate in positioning, two fire source detecting methods are comprehensively applied, surface anomaly feature detection is combined with probe hole verification, and a fire source detection result is more accurate and reliable. The dimensionality of a traditional fire area detection result is expanded through the probe holes, detection drilled holes are used for verification, the depth of the fire source can be determined through temperature in the drilled holes and other information, the three-dimensional position of the fire source can be determined, the effect of fire area treatment can be improved, and treatment time is shortened.

The invention relates to a plugging agent and plugging liquid for drilling fractured leakage. The plugging agent mainly comprises the following components in parts by weight: 100 parts of water granulated slag, 10-20 parts of a lightening admixture, 10-15 parts of silica fume, 7-10 parts of an activator, 1.5-3 parts of a fluid loss agent, 2-4 parts of a reinforcing agent, 1-2 parts of a retarder,0.5-2 parts of a tackifier and 3-6 parts of fibers. The plugging agent disclosed by the invention has the following advantages for drilling fractured leakage that the formula is simple and adjustable,the usage amount of the water granulated slag is greatly increased, pollution of solid waste to the environment is reduced, the strength is moderate compared with cement paste plugging, the plug sweeping efficiency is high, good compatibility with potassium-ammonium-based drilling fluid and silicate drilling fluid is achieved, performance changes of the drilling fluid are small, and the problem that the drilling fluid is polluted after cement paste plugging is effectively solved.

The invention relates to a controllable mould bag grouting method for reinforcing a roadbed in an underlying goaf. The method comprises a curtain wall and a grouting body, wherein the grouting body isfilled in the curtain wall; the curtain wall is formed by grouting a mould bag; the mould bag is formed by sewing hemp bags with thick threads; the mould bag has three sides with a width of 1.6m andan overall length of 6m; a galvanized pipe is arranged in the middle of the mould bag; a grouting pipe is arranged in the galvanized pipe; and the grouting pipe and the galvanized pipe are fixed by steel wires. According to the method, the goaf reinforcement grouting technology is controllable, the material consumption and the goaf treatment cost are reduced through the curtain wall, meanwhile, the reinforcement strength of the goaf is convenient to control, the pollution to the surrounding environment is greatly reduced, and the effective reinforcement of the hollow goaf can be realized.

The invention discloses a preparation method and application of sulfhydrylation biochar for repairing heavy metal polluted water and soil. The preparation method comprises the steps that biochar is prepared by biomass pyrolysis and carbonization, the biochar is mixed with beta-mercaptoethanol, acetic anhydride and concentrated sulfuric acid, the mixture reacts at 70-90 DEG C for 17-24 hours, and is cooled to the room temperature, and washing, suction filtration, drying and grinding are conducted to obtain the sulfhydrylation biochar. According to the preparation method of the sulfhydrylation biochar, the process is easy, required equipment is simple, and the preparation cost is low. The sulfhydrylation biochar can absorb heavy metal ions such as cadmium, lead, copper and zinc existing singly or compositely in a solution, further can passivate heavy metals such as the cadmium, the lead, the copper and the zinc in the soil compositely polluted by the heavy metals, the effectiveness of the heavy metals is lowered, the physical and chemical properties of the soil are improved, and wide application prospects are achieved.

The invention discloses a method for preparing a soil repairing promoter used together with plants and/or microorganisms and belongs to the technical field of soil repairing. The method comprises the following steps: A, dissolving tetrabutyltitanate in an ethanol solution to obtain a solution A; B, taking trehalose and deionized water, andpreparing black carbon microspheres; C, putting Zn(NO3)2.6H2O, urea and the black carbon microspheres into an ethanol-water solution, and performing backflow reaction to obtain a brown blackintermediate product; D, putting the brown blackintermediate product and ammonium citrate into a mixed system of cyclohexane, dicaprylyl ether and deionized water, and preparing a mixed solution B; E, adding vermiculite powder into the mixed solution B, dispersing for 30 minutes, dropping the solution A into the mixed solution B, performing centrifugalseparation, removing supernatant liquid, washing a solid-phase product till being neutral, drying, and calcining, thereby obtaining the soil repairing promoter. The method disclosed by theinvention is simple to operate, stable in preparation process and high in preparation efficiency.

The invention relates to the technical field of black and odorous water body treatment, and discloses a purification apparatus for black and odorous water body treatment. The purification apparatus comprises a ship bottom, wherein a ship plate is fixedly arranged on the top portion of the ship bottom, a stirring cavity is fixedly arranged on the left end of the ship plate, a conveying pipe is fixedly installed on the top end of the stirring cavity, a fertilizer bin is fixedly installed on the right side of the stirring cavity and is located at the top portion of the ship plate, the other end of the conveying pipe is fixedly installed on the top portion of the fertilizer bin, a fan is fixedly installed on the top portion of the fertilizer bin, and a cab is fixedly installed on the right side of the fertilizer bin. According to the present invention, the corrupted organic matters generated on the surface of the black and odorous water body are sequentially subjected to stirring breakingand collecting so as to effectively utilize the resources, and the natural bio-fertilizer can be obtained after the stirring breaking and the collecting, and can be used for plants and flowers so as to save the resources, such that the effective and reasonable utilization of waste after treatment can be guaranteed while black and odorous water body treatment is performed.