709results about How to "Reduce governance costs" patented technology

The invention discloses a method for comprehensive treatment of oilfield waste, which is characterized by comprising the process steps of cleaning and separation, ultrasonic separation, tempering and destabilization, oil-water separation, centrifugal separation, mixed curing, air floatation separation, adsorption filtration, flocculating settling, oxidization electrolysis, deep purification and permeable filtration. Thus, the oilfield waste is treated and utilized in a classified manner, so that sump oil is recovered, the solid phase achieves the discharge standard of oilfield sludge treatment design specifications (SY/T6851-2012) or is reutilized for construction material manufacturing, and the liquid phase achieves the sewage comprehensive discharge standard (GB8978-1996) after being subjected to water treatment.

The invention discloses a method for removing heavy metal ions in sewage by nanometer hydroxylapatite, belonging to the technical field of heavy metal sewage treatment. The method comprises the following steps: adding nanometer grade hydroxylapatite powder in waste water containing heavy metal ions, wherein, the dosage of the hydroxylapatite powder is 6-8g/L; balancing the mixture for 12-48 hours at a temperature of 23-27 DEG C; and standing the mixture to remove the heavy metal ions in the waste water. The method uses the hydroxylapatite with relatively lower economic value to treat the heavy metal sewage, has high treatment efficiency, low treatment cost, strong field operability and small environment risk, and has heavy metal ion removal rate over 90 percent under conditions that concentration of Cd, Pb or Cu ions does not exceed 60mg/L.

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 provides a vegetation recovery method for a nonferrous metal mining wasteland, which comprises the following steps: 1), terrain consolidation; 2), heavy metal stabilizing disposal; 3), shallow acid-base improvement and flexible impervious isolation: spraying the mixture of an acid-base modifier, a vegetative matrix and resin to a wasteland surface; 4), setting a section of drainage ditch; and 5), laying a vegetation cushion: laying a vegetation cushion on a slope surface and fixing the vegetation cushion with an anchor rod. The method provided by the invention combines the terrain consolidation, the heavy metal stabilizing disposal, the shallow acid-base improvement, the surface layer impervious isolation, wasteland vegetation recovery and other technologies to prevent heavy metal ions from relocating and diffusing to pollute the environment; the wasteland vegetation system is recovered; and the vegetation recovery method is high in standardization and industrialization level, is 2 to 3 times higher than a conventional soil replacement spray-sowing greening method in efficiency, low in governance cost, suitable for the popularization and application of ecological environmental management of large-area nonferrous metal mining wastelands, and remarkable and stable in effect.

The invention discloses a microorganism deodorant and a preparation method thereof. The microorganism deodorant has the following strain composition: 106-109/mL of Lactobacillus acidophilus, 106-109/mL of Bacillus pumilus, 106-109/mL of Bacillus subtilis, 105-107/mL of Pseudomonas fluorescens, 105-107/mL of Rhodopseudomonas palustris, 104-106/mL of Bantu Brettanomyces, 104-106/mL of common Candida albican, 104-106/mL of Penicillium expansum, 104-106/mL of Rhizopus oryzae, 104-106/mL of Trichoderma viride, 104-106/mL of Streptomyces Microflavus and 104-106/mL of Streptomyces griseus. Accordingto the microorganism deodorant, the release amount of obnoxious gas can be effectively lowered, and the technical support is provided for effectively processing fetor in livestock and poultry farms and protecting environment.

The invention discloses a treatment method of waste slurry generated by gigging a well and drilling, which comprises the following steps of: separating liquid from scraps to remove sands in waste slurry which is generated by gigging a well and drilling and is reflowed from the well; adding inorganic flocculating agent and water in the sanded-removed waste slurry generated by gigging the well and drilling to dilute, stir and damage stability to obtain cement paste with solid content which is less than or equal to 20%; adding polyacrylamide flocculant into the obtained cement paste to stir and perform a cement paste destabilization reaction; after the cement paste destabilization reaction, separating solid from liquid in the cement paste; and returning filter water to the step of separating liquid from scraps to remove the sands as cleaning proportioned water to recycle and/or return to the step of diluting, stirring and damage stability as water for treating and diluting the cement paste. The method can solve the problem for treating and using the waste slurry generated by gigging the well and drilling, can separate sands from mud and water in the waste slurry generated by gigging the well and drilling, can reach the standard and be comprehensively utilized, has large treatment amount to reach 1000 m<3>/h, can treat the waste slurry on a large scale, thereby being capable of reducing the treatment cost of the system. The method can comprehensively utilize and recycle all the waste slurry generated by gigging the well and drilling.

The invention relates to a method for extracting gas from a coal seam roof complex branched well, which comprises the following steps of: selecting a coal storage layer with the gas content larger than 8m<3>/t; determining the machine tunnel and the tail tunnel positions excavated by a working surface to be prepared, as the position of a horizontal well section of a complex branched well; confirming the layer position in which a fissure zone generated due to coal mining is located; respectively distributing the horizontal well section above a machine tunnel and a tail tunnel; confirming the positions of a well opening and a deflection point and realizing the angle gain of a large-curvature radius; by adopting a three-opening structure on a well body structure and adopting naked-eye structures for both the horizontal well and the branched wells, constructing a horizontal well section in a selected rock stratum; constructing the branched wells at both sides of the horizontal well section; constructing a downward branched well on the horizontal well section and drilling through the coal storage layer; installing extracting equipment for extracting gas; carrying out negative pressure extraction in the medium and later extracting phases for realizing one well with multiple purposes; and inspecting effects. The method is favorable for reducing the gas content, creating condition for safely and efficiently carrying out coal tunnel excavation and coal mining and really realizing one well with multiple purposes at the coal mining phase.

Provided is a heavy metal pollution soil repairing agent using excess activated sludge as the rawmaterial, a method of extraction and a method for repairing the heavy metal pollution soil, which relates to a heavy metal pollution soil repairing agent and a method thereof and a method for repairing the heavy metal pollution soil, and solves the problems of high cost, easily secondary pollution and complex operation existing in the repair of the heavy metal pollution soil. The heavy metal pollution soil repairing agent is composed of amylose, protein, nucleic acid, phosphoric acid, amino acid, humic acid compound, uronic acid and the organic substance required for cell lifecycle. The method for distilling the heavy metal pollution soil repairing agent is as follows: the wastewater treatment excess activated sludge reacts under the condition of 80-120 KPa and 60-100 DEG for 8-20 minutes; then centrifuges for 8-20 min at the rotating speed of 5000-7000r/min. The invention adopts the home position repairing or the heterotopia repairing to repair the heavy metal pollution. The invention has low cost and no secondary pollution, simple operation, short repairing period, strong activity and wide range of application.

The invention relates to a preparation method of J acid and a J acid waste water comprehensive treatment and recycling method. The J acid waste water comprehensive treatment and recycling method is as follows: the following treatment is carried out on hydrolysis waste water: (1) 30-40% of the total quantity of the hydrolysis waste water is used in an acidification reaction for preparing 2-naphthylamine-1-sulphonic acid by utilizing sodium 2-naphthylamine-1-sulphonate; (2) extraction and reextraction are carried out on the residual hydrolysis waste water, so that Na2SO4 and extraction waste liquor are obtained, the extraction waste liquor is used in a hydrolysis working procedure in a J acid production process, an extraction agent adopted during extraction is composed of 10-30wt% of complex agent, 30-70wt% of diluent and 5-20wt% of tributyl phosphate, and the complex agent is trioctylamine, or trialkyl tertiary amine or combination of trioctylamine and trialkyl tertiary amine. By adopting the preparation method of the J acid, the cost of water for the J acid and waste water treatment cost can be greatly reduced, and environmental pollution can be reduced.

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.

The invention provides a gas-phase oxidation/liquid-phase reduction method for absorbing and removing NOx. The method utilizes O2 in waste gases as an oxidizer; after be processed by non-catalyst oxidization or catalyzed oxidation by modified active carbon materials, NOx waste gas with low oxidization degree reacts with an alkaline reducing solution fully to remove NOx. After going through multi-grade oxidization, reduction and absorption, the NOx in waste gases can fully meet the emission standard. The method of the invention has the advantages of being able to realize up-to-standard emission of NOx waste gas with low oxidization degree, simple technique, small cost and high removing efficiency.

The invention relates to a method for simultaneous treatment of mixed pollutant exhaust gas containing NOx and SO2. Absorption liquid of ferrous salt, ethylenediaminetetraacetic acid disodium and a desulphurization agent and waste gas containing SO2 and NO are introduced into a conventional reactor to carry out the reaction, thereby realizing the simultaneous absorption of NO and SO2. The absorption liquid after the reaction can be introduced in a liquid-solid reactor which takes activated carbon as a catalyst for regeneration. The method is a low-cost wet desulphurization and denitrification technique with market competitiveness.

The invention relates to a process for extracting nickel-cobalt from laterite by using resin-in-pulp adsorption technology. The process comprises the following steps of: milling the laterite, and adding sulfuric acid into the milled laterite to perform high-pressure leaching; pouring the ore pulp after the leaching into a reaction kettle for neutral impurity removal; directly pouring the ore pulpafter the impurity removal into an adsorption tank to perform resin adsorption; adopting multilevel counter current absorption to perform desorption on the loaded resin so as to obtain pure nickel and cobalt mixed solution; and performing extraction separation to obtain a nickel-cobalt product. The resin can be used repeatedly after regeneration, the damaged resin is less, the service life of theresin is long, the desorption of the loaded resin and the regeneration of a poor resin are performed at normal temperature and normal pressure and are simple and easy to operate without a pressure vessel and heat regeneration device, thereby saving energy resources and reducing equipment investment. The ore pulp after adsorption is uniformly neutralized to reduce the tailings treating cost. The process shortens the technological process, reduces the liquid-solid separation burden, and reduces a great number of washing and filtering process steps, thereby reducing the production energy consumption and reducing the production cost. The process is simple, and the recovery rate of nickel and cobalt is over 90 percent.

The invention discloses a none-full-depth freezing method for penetrating through ultra-thick water-rich bed rock in shaft deepening. According to the method, a shaft penetrates through surface soil, the water-rich bed rock, a water-resisting layer and low-permeability bed rock sequentially from top to bottom, and main freezing pipes penetrate through the surface soil and the water-rich bed rock sequentially from top to bottom, penetrate into the water-resisting layer by 10m-20m and stop in a low-permeability rock stratum; a none-full-depth freezing depth is 240m-260m and a wall-caving-preventing freezing depth is 40m-45m; the main freezing pipes are annularly arranged with the circle center of the shaft as a circle center and the distance between the main freezing pipes and the outer wall of the shaft is 2m; wall-caving-preventing freezing pipes penetrate into the surface soil only by 43m and are annularly arranged with the circle center of the shaft as a circle center, and the distance between the wall-caving-preventing freezing pipes and the outer wall of the shaft is 1m. The method is fast in construction, safe and efficient and capable of preventing water damage caused when underground water damages a horsehead and related chamber rock mass along annular water diversion channels during construction of the horsehead after a full-depth freezing shaft is frozen, wherein the annular water diversion channels are formed by the freezing pipes and temperature measuring pipes; therefore, cost for treating water burst is saved, and safety construction of the horsehead and a chamber is guaranteed.

The present invention provides a fiberboard with formaldehyde self-absorbing function and a manufacturing method thereof. The fiberboard of the invention adopts the wood fiber, aldehyde adhesive and active carbon as main raw materials. The dosage of the adhesive is 9%-12% of that of the wood fiber mass, and the dosage of the active carbon is 2%-30% of that of the wood fiber mass. The invention provides the novel fiberboard which is added with a certain amount of active carbon component with the absorbing function in the manufacturing process of the board so that the fiberboard has the function of free formaldehyde (harmful gas) self-absorbing function in the board for a long time. The releasing of the formaldehyde in the board can be reduced for reducing the formaldehyde pollution to the environment. Simultaneously the fiberboard has the functions of corrosion resistance, moisture resistance, deodorization and fungus resistance. Furthermore the fiberboard has the advantages of high absorbing efficiency, excellent absorbing effect, low cost, no toxicity, no side effect, etc.

The invention relates to a chromium-free tanning production process of a low-formaldehyde beach woolskin. The chromium-free tanning production process comprises the following process procedures of: water soakage, fleshing, degreasing, softening, WT tanning, alkali extraction after the tanning, wet grinding, water scrubbing, drying in the air, conditioning, retanning, alkali extraction after the retanning, fat addition, drying in the air, skin shoveling, dry grinding and dust brushing to obtain a finished product. The chromium-free tanning production process is characterized in that the tanning and the retanning are respectively completed in a tanning solution and a retanning solution which do not contain chromium. By using the chromium-free tanning production process, the processing of the beach woolskin is carried out by adopting a chromium-free tanning agent; not only can the waste chromium zero emission of a tanning working procedure and a retanning working procedure be realized and the sewage treatment cost of an enterprise be decreased, but also the produced beach woolskin is natural in color and is curly and attractive; a leather body is full and soft in hand feel and is lower than 75 mg/kg; a shrinkage temperature is higher than above 80 DEG C; and physical properties and mechanical prosperities can reach those of a fur acquired by an ordinary chromium tanning method.

The invention relates to an economic dispatch optimization method of an independent microgrid on the basis of dual master control dynamic cooperation. The independent microgrid comprises two types of master power of a battery energy storage system and a diesel generating set, and two types of non-master power of a wind generating set and a photovoltaic power generation system; the method comprises 1) an economic dispatch optimization strategy of a system when the battery energy storage system is adopted as the master power of the independent microgird; 2) the economic dispatch optimization strategy of the system when the diesel generating set is adopted as the master power of the indepentdent microgird; 3) an economic dispatch optimization process of the independent microgrid of dual master control dynamic cooperation on the basis of a particle swarm optimization algorithm. The economic dispatch optimization method of the independent microgrid on the basis of dual master control dynamic cooperation solves the problem of economic dispatch optimization of two different types of master power of the battery energy storage system and the diesel generating set in the independent microgird, can simultaneously pursue the aims of an optimal operation control mode of the system and minimum generating cost, effectively realize the aim of minimum generating total cost of economic operation and maximum using of renewable energy sources of the independent microgird system, and improve the economic operation performance of the microgrid.

The invention discloses a gas control method for triple-purpose use of drilled holes in a coal floor of a close distance seam group, and belongs to coal mine gas control methods. In the coal floor of a mine, drilled holes in the same drill site are used, and gas extraction is performed according to the steps as follows: firstly, before coal mining, gas in a coal seam is extracted in advance through the drilled holes in the coal floor of the mine, and danger of the outburst of coal in the coal seam at the upper part and the gas is eliminated; secondly, the coal at the upper part is mined, when the coal seam at the upper part is mined, mining pressure relief and stress relief are caused to coal seams at the upper part and in the middle, the drilled holes of the original drill site are used, and gas in the coal seams at the upper part and in the middle in a mining pressure relief zone is extracted in a negative pressure manner; and finally, the coal seam in the middle and the coal seam at the lower part are mined, and simultaneously, the original drilled hole is used again, and gas in a mining layer is extracted in the negative pressure manner. The work efficiency can be improved, the gas extraction efficiency is high, the cost is saved, the concentration of the extracted gas is high, and the utilization of the gas is facilitated. The gas control method comprises the control of gas in close distance seam groups of two or more coal seams.

The invention relates to a heavy metal trapping agent in the field of environment protection. The heavy metal trapping agent is prepared from polymer containing a polyethylene diamine tetra-acetic acid unit, wherein by weight percentage, the content of the polyethylene diamine tetra-acetic acid unit is 45-100% of polymer; the polymer is homopolymer or copolymer; the polyethylene diamine tetra-acetic acid unit is a form of sodium salt, potassium salt or ammonium salt. The defect that a chelate compound of existing ethylenediamine tetra-acetic acid and the heavy metal is generally soluble is overcome, and the provided heavy metal trapping agent has strong heavy metal chelating power, and the solubility can be controlled by pH of the solution; moreover, the trapping agent is free of toxicity.

The invention relates to a magnetic separation purifying treatment technology for removing heavy metal pollution of soil, which is characterized in that a responsive or adsorptive magnetic carrier granular material is used for adsorption trapping of heavy metals in soil, and then magnetic separation and soil separation are carried out; the technology comprises the following steps: 1) preparing the soil and producing slurry; 2) performing adsorption trapping on the heavy metals by a magnetic carrier; 3) performing magnetic separation; 4) regenerating the material; and 5) recovering the heavy metals and performing concentrated treatment. The technology can compensate disadvantages of current soil dressing methods, chemical methods, physical methods and biological methods for soil restoration, has the advantages that the technology process is simple, the magnetic carrier granular material can be regenerated and recycled, the treatment cost is low, advantages of an ore dressing technology and an ore dressing machine can be performed, removal, decrement, purification and restoration of the heavy metal pollution for various scales of the soil are developed, no lots of dirty (waste) water is generated during a whole process, secondary pollution or allopatric pollution cannot be generated, and the heavy metals can be recovered.

The invention belongs to the high-level oxidation technique and water environment protecting field, and relates to a method of vitriol free radical treating red tide. The method aims to produce vitriol free radical through adding persulfate or single peroxide hydrosulfate into the water rich in nutrition, then through pyrogenation, ultraviolet light photolysis, Gama radial eradiation decomposition or metal ion catalyze manner, having high oxidation active vitriol free radical that can react with the living creatures such as alga in the water to destroy the cell membrane fat layer, the protein, the carbohydrate and the DNA of the living creatures so as to kill the living creatures such as alga, degradate the anatoxins excreted by the alga in the water, and purify the water quality. The invention has the advantages that the method has small medicament use volume, low fathering cost and simple operation; adding reagent with friendly environment does not produce secondary pollution; the method has high treating efficiency and rapid reaction speed so as to be suitable for the water area with big area; the method not only can kill the harmful alga in the water, but also can degradate the anatoxins excreted by the alga.

A hole-sealing, hydraulic-fracturing and gas-extraction integrated construction device comprises a first bag, a second bag, a grouting pipe, a hydraulic fracturing pipe, a gas extraction pipe and a perforated pipe. The first bag is arranged in a drilled hole and located near a hole opening, the second bag is arranged in the drilled hole and located near the hole bottom, the grouting pipe and the gas extraction pipe both sequentially penetrate through the first bag and the second bag from left to right and then extend into the hole bottom, and the left end of the perforated pipe is coaxially and fixedly connected with the right end of the gas extraction pipe. The outer diameter of the hydraulic fracturing pipe is smaller than the inner diameter of the gas extraction pipe, the hydraulic fracturing pipe is coaxially arranged in the gas extraction pipe and the perforated pipe, and the right end of the hydraulic fracturing pipe rightwards extends out of the right end of the perforated pipe. The invention further discloses a hole-sealing, hydraulic-fracturing and gas-extraction integrated construction method, that is, after a hydraulic fracturing procedure, the hole continues to be used for gas extraction; and a novel layer-penetrating fracturing-gas extraction integrated hole drilling and sealing process is provided, the good versatility of the drilled hole is guaranteed, the number of drilled holes is reduced, and the construction cost is lowered accordingly.