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33results about How to "Resource utilization" patented technology

Task unloading and resource allocation method based on D2D communication

The invention discloses a task unloading and resource allocation method based on D2D communication, and belongs to the technical field of wireless communication. According to the method, it is assumedthat used users can be mutually unloaded, meanwhile, channel interference is considered, and modeling is carried out with the purpose of minimizing the total overhead of a system as the purpose, andthen the problem is decoupled into two sub-problems, the two sub-problems are respectively solved by utilizing pseudo-convex and convex optimization technologies, the two sub-problems are iterativelysolved, and finally an optimal solution of the problem is obtained. According to the method provided by the invention, the mutual unloading between the user equipment is considered, and the reasonablecalculation task is allocated to the user equipment according to the resources (calculation capability, residual electric quantity and the like) owned by the user equipment, so that the equipment with limited resources can participate in calculation, the resources are reasonably utilized, and the calculation performance of all users is improved. Besides, through interference management and powercontrol, channels are reasonably distributed to users, and D2D communication quality can be guaranteed.
Owner:HARBIN ENG UNIV

Novel kitchen waste residue-liquid separating device

The invention relates to a kitchen waste resource recycling and residue-liquid separating device, and in particular relates to a novel kitchen waste residue-liquid separating device. The novel kitchen waste residue-liquid separating device is characterized by comprising a feeding box, a residue-liquid separator, a waste liquid storage tank and a support, wherein a feeding hole of the feeding box is communicated with a kitchen downcomer, a discharge hole of the feeding box is communicated with a feeding hole of the residue-liquid separator, the residue-liquid separator comprises a barrel body, a stranding cage, a first bearing block, a second bearing block and a motor, the barrel body is obliquely arranged on the waste liquid storage tank, a helical blade part of the stranding cage is positioned in the barrel body, a waste liquid outlet is formed in the bottom surface of the lower end part of the barrel body and is communicated with the waste liquid storage tank, and a waste residue outlet is formed in the bottom surface of the upper end part of the barrel body. The novel kitchen waste residue-liquid separating device has the characteristics of having capacitiy of continuously separating residue and liquid and discharging residue automatically without limitation of kitchen drainage, is suitable for recycling in kitchen waste production places.
Owner:INST OF OIL CROPS RES CHINESE ACAD OF AGRI SCI

Method for preparing sludge with strongly-acidic fluorine-containing waste water to prepare calcium fluoride concentrate

PendingCN109399687AHigh degree of refinementMeet resource utilizationCalcium/strontium/barium fluoridesFlotationEtherSODIUM DODECYL BENZENE SULFONATE
The invention discloses a method for preparing sludge with strongly-acidic fluorine-containing waste water to prepare calcium fluoride concentrate. The method includes the steps that 1, calcium fluoride sludge is pre-treated and pulped after being treated, the calcium fluoride sludge, a trapping agent, a foaming agent and an adjusting agent are mixed and stirred, and the mixture is subjected to flotation, wherein the trapping agent is one or more of oleic acid, sodium alkyl sulfate, sodium naphthenate and modified fatty acid salt compound sodium dodecyl benzene sulfonate, the foaming agent isone of terpenic oil, methyl isobutyl carbinol and butyl ether oil, and the agenting agent is prepared from an activator, an inhibitor, a dispersant sodium carbonate and a flocculant; 2, the calcium fluoride sludge obtained after flotation is mixed with an acid solution; 3, the calcium fluoride sludge obtained after being treated in the second step is mixed with a fluorine-containing solution; 4, acalcium fluoride sludge mixture obtained after being treated in the third step is neutralized through an alkaline solution, the calcium fluoride sludge mixture is after-treated, and the calcium fluoride concentrate is obtained. The method has the advantages of being high in refining degree and achieving resource utilization of multiple industries.
Owner:NANJING INST OF ENVIRONMENTAL SCI MINIST OF ECOLOGY & ENVIRONMENT OF THE PEOPLES REPUBLIC OF CHINA

A method of applying natural friendly compound conditioner to realize efficient dehydration of sludge

The invention relates to application of a natural friendly sludge composite conditioning agent and a dehydration method for improving the sludge processing performance. First, sludge with a water content of 97 to 99% is condensed until the water content reaches 90 to 93%; secondly, cationic etherified starch, which accounts for 0.2 wt% to 1 wt% of the solid phase of sludge to be processed, is added into the condensed sludge, and then the mixture is stirred for five minutes; thirdly, chitosan, which accounts for 0.1 wt% to 1 wt% of the solid phase of the sludge to be processed, is added into the mixture, and then the mixture is stirred for ten minutes; fourthly, modified silicon-calcium slag with a rigid skeleton, which accounts for 10 wt% to 100 wt% of the solid phase of the sludge, is added, and then the mixture is stirred for five minutes; finally, the conditioned sludge is transported to a press-filtering dehydration device to carry out operations of filtering, squeezing, and dehydrating. The provided method has the following advantages: (1) the composite conditioning agent is non-toxic and harmless, does not generate any secondary pollution, and does not corrode the sludge transportation lines and dehydration equipment; (2) the sludge processing performance is improved by seven times after the novel technology is adopted; (3) the water content of a dehydrated filter cake is reduced by 10% compared to the original technology; (4) the processed sludge can be directly buried, burned or composted, and can meet the national environmental requirements; (5) the technology is simple, and the provided method can be applied to industry.
Owner:TAIYUAN UNIVERSITY OF SCIENCE AND TECHNOLOGY

A kind of method for separating element from tin-containing bismuth tellurium solution

The invention discloses a method for separating elements from a tin-tellurium-bismuth containing solution, and belongs to hydrometallurgy. Because of the low content and low grade of tin, tellurium and bismuth, tin, tellurium and bismuth in the tin-tellurium-bismuth containing solution cannot be economically recycled when basic cupric carbonate is produced along with wastewater treatment at present, and the resources can be greatly wasted. The method comprises the following steps: adding an industrial waste liquid containing multiple components, appropriately adjusting the pH value, primarily separating from other base metals, performing oxidation conversion treatment on the obtained tellurium enriched product so as to obtain a secondary enriched product, further leaching tin and bismuth by using low-concentration sodium hydroxide strong base, and separating tin by using high-concentration sodium hydroxide strong base, thereby obtaining a high-grade crude tin product, adjusting the pH value of a tellurium solution by using a diluted acid, and removing impurities such as tin and lead for a second time, thereby obtaining high-grade tellurium dioxide, providing the high-grade tellurium dioxide to a tellurium refining plant for refining tellurium, and extracting other elements from converted slag which is rich in bismuth and silver. The method is free of dispersion in the tellurium extraction process, has the advantages of high tellurium recycling rate and direct yield, is good in tin and bismuth separation effect and is applicable to treatment on low-concentration tin-tellurium-bismuth containing solutions.
Owner:JIANGXI COPPER

Domestic waste treatment system and its treatment method

InactiveCN104138891BCategory Synchronization Processing SynchronizationSuitable for large-scale processingSolid waste disposalDecompositionChest side
The invention relates to a domestic waste treatment system and a treatment method thereof. The domestic waste treatment system includes a feeder, a pulper connected to the feeder, a pulper set in the pulper, and a pulper set at the bottom of the pulper. The sieve, the undersize discharge port set under the screen, the oversize discharge port connected to the bottom of the pulper, the sorting tank set on the side of the oversize discharge port, and the sorting tank one The material lifter on the side, the grit chamber installed on the side below the undersize discharge port, the sand lifter installed on one side of the grit chamber, the circulating water pipe connected to the top of the pulper at one end, and the other end of the circulating water pipe A connected circulating water tank, a sedimentation tank arranged on one side of the circulating water tank, and a slurry extractor arranged on one side of the sedimentation tank. The invention has the advantages of simple process, easy operation and low cost, realizes efficient cleaning, decomposition, crushing, and synchronous classification of household garbage, is suitable for large-scale treatment of household garbage, and realizes resource utilization of household garbage and harmless and pollution-free treatment. Synchronize.
Owner:GUANGZHOU ZHENGLV ENVIRONMENTAL PROTECTION TECH CO LTD

A kind of nickel plating aging solution prepares the method for metal nickel sulfate, sodium dihydrogen phosphate and sodium sulfate

The invention provides a method for preparing metal nickel sulfate, sodium dihydrogen phosphate and sodium sulfate by using a nickel plating aging liquid. The method comprises: (1) adjusting the pH value of a nickel plating aging liquid by using an alkali, and carrying out thermal insulation to obtain a solution A; (2) stirring the solution A, adding a catalyst, and filtering to obtain metal nickel powder and a solution B; (3) adding sulfuric acid to the metal nickel powder to dissolve, adding hydrogen peroxide, and carrying out filtration concentration crystallization to obtain the nickel sulfate product; (4) adding an oxidizing agent to the solution B to obtain a solution C; (5) adding a concentrated acid to the solution C and adjusting the pH value to obtain a solution D; (6) evaporating and crystallizing the solution D, and filtering to obtain the sodium sulfate product and a solution E; and (7) continuously concentrating the solution E, carrying out cooling crystallization, and filtering to obtain the sodium dihydrogen phosphate product, wherein the mother liquor returns to the next batch so as to be continuously concentrated and used. According to the present invention, the treatment process is easy to achieve, no secondary waste is produced, the three products such as nickel sulfate, sodium dihydrogen phosphate and sodium sulfate can be obtained at the same time, and the good economic benefits and the good environmental benefits are provided.
Owner:WUXI ZHONGTIAN SOLID WASTE DISPOSAL CO LTD

Sulfonate type biomass surfactant and synthesis method thereof

The present invention relates to the field of organic compound synthesis, and specifically, relates to a sulfonate-type biomass surfactant based on a fatty acid methyl ester and a synthesis method thereof. A main component of city restaurant and kitchen swill waste oil is the fatty acid methyl ester. The sulfonate-type biomass surfactant based on the fatty acid methyl ester is prepared from the following steps: preparing fatty acid alkanolamide, and carrying out a sulfopropyl reaction. The sulfonate-type biomass surfactant based on the fatty acid methyl ester is applied in the field of oil production. The sulfonate-type biomass surfactant synthesized in the present invention has better surface activity and interfacial activity, is non-toxic, non-hazardous and degradable, does less harm to an environment and a stratum layer, can replace a conventional petroleum diesel-based surfactant, achieves purposes of resourceful comprehensive utilization of city restaurant and kitchen swill and added value improvement, and has a good application prospect; in addition, a synthesis reaction condition is mild, a preparation process is simple, and the process is reasonable, applying to scale production; the surfactant is used as an oil washing agent of a chemical flooding system in oil drilling, improves an oil washing effect, and thus improves a crude oil recovery rate.
Owner:CHINA UNIV OF PETROLEUM (EAST CHINA)

A kind of method for purification and treatment of waste water from vanadium extraction by wet method

The invention relates to a method for purifying waste water from vanadium extraction by wet method, which comprises the following steps: S1 adding water and stirring calcium carbide slag, adjusting the water content to 60-70%, and obtaining calcium carbide slag slurry after pressure filtration; S2 adding calcium carbide slag to S1 Add 5-15% of its weight tailings slag into the slurry, stir for 1-5min to obtain a dispersion; S3 introduces the waste water into the treatment tank, and adds the dispersion in S2, which accounts for 5-20% of the waste water weight, and stirs for 2-20% in the treatment tank. 8min; S4, add the calcium carbide slurry obtained in S1 to the wastewater treated by S3, accounting for 50-70% of its weight, continue to stir for 1-4min, and let it stand for 10-30min; S5 collects the supernatant in S4 and puts it in the supernatant Add the calcium carbide slurry in S1, continue to stir and adjust the pH to 9-10, let it stand for 10-30 minutes and press filter; S6 collects the lower sediment obtained in S4 and the filter cake in S5, mixes them and performs press filtration, and the obtained filtrate is mixed with S4 The waste water is combined for treatment; S7 collects the filtrate in S5, which is the clean water obtained after the waste water is purified. The invention does not need to add chemical agents such as sodium carbonate, PAC, PAM, etc., and the steps are relatively simple; it can also remove toxic substances such as arsenic and fluorine in waste water.
Owner:宜昌银钒科技有限公司

A method for resource utilization of waste lithium-ion battery roasting tail gas

The invention discloses a method for the resource utilization of waste lithium ion battery roasting tail gas. Indirect reduction roasting is performed on waste lithium ion batteries in a rotary kiln,and battery powder and metal current collectors which are used for the recycling of follow-up processes after roasting, crushing and sieving; after tail gas generated during roasting is absorbed through the spraying of an alkaline solution, mixed filter residues of lithium phosphate and lithium fluoride and sodium fluoride containing filtrate can be obtained through filtering; a sodium fluoride product and crystallization mother liquor can be obtained after the evaporation, crystallization and filtration of the filtrate, and the crystallization mother liquor can return to be absorbed through spraying; calcium oxide or calcium hydroxide is added to precipitate fluorine and phosphor after the acid dissolution of the filter residues, mixed filter residues of calcium fluoride, calcium oxide and calcium phosphate which can be used as ceramic raw materials and lithium containing filtrate can be obtained after filtering; and a lithium carbonate product and alkaline filtrate are obtained afterthe concentration, lithium precipitation and filtering of the filtrate, and the alkaline filtrate can return back to the alkaline solution to adjust the pH of the solution. The method is simple in technology, short in process and low in reagent cost, and secondary pollution cannot be generated, so that the recycling problems of fluorine, phosphor and lithium in waste lithium ion battery roastingtail gas can be effectively solved.
Owner:GUANGDONG GUANGHUA SCI TECH
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