36results about How to "To achieve the effect of resource utilization" patented technology

The invention discloses a stabilizing agent for heavy metal contaminated soil and a preparation method and application thereof, and the stabilizing agent comprises the following raw materials: by weight, 20-60% of bone meal; 10-30% of biochar and 20-70% of calcined shell powder. The preparation method is as follows: (1) drying biomass in air and grinding into particles smaller than 60 meshes, cracking in a cracking furnace at 400-800 DEG C for 6-8 hours to obtain the biocar; calcining shell powder with the particle size below 20 meshes in a high temperature furnace at 800-1000 DEG C for 2 to 4 hours, naturally cooling to room temperature to obtain the calcined shell powder; and (2) proportionally mixing the biocar, the calcined shell powder and the bone meal evenly to obtain the stabilizing agent. The stabilizing agent compounding the three components in accordance with a specific proportion solves the problem of high cost, undurable stabilization effect and the like of stabilizing agents for the heavy metal contaminated soil in the prior art.

The invention relates to a method for recovering zirconia and yttria from the yttria-stabilized zirconia solid solution waste, which comprises the following steps: mixing the solid solution waste powder, sulfate and salt; acidizing and calcining at 200 to 320 DEG C; leaching the acidizing water and/or mother liquor under self-heating conditions; concentrating the leaching solution to leach zirconium sulfate; dissolving the zirconium sulfate in the water and purifying; neutralizing the zirconium hydroxide with alkali and precipitating; calcining the zirconium hydroxide to obtain zirconia; precipitating zirconium mother liquor to produce by-product of ammonium sulfate; neutralizing yttrium rich mother liquor and precipitating to obtain yttrium; dissolving yttrium rich residue with acid and purifying; precipitating oxalate to obtain yttrium oxalate; calcining to obtain the yttria. The method has the advantages of effectively separating the yttria from the zirconia in stable zirconia solid solution waste with optional yttrium ion under low temperature condition, changing the zirconia solid solution waste into valuables and utilizing the resources.

The invention discloses an organic compound sewage dehydrating conditioning agent prepared from paper mill sludge and a preparation method. The preparation method comprises the following steps: dissolving paper mill sludge with alkaline liquor, acidifying the filtrate with acid liquor, and filtering and drying the separated lignin to obtain lignin; preparing a chlorinated triethyl glycidyl ammonium monomer from epoxy chloropropane and triethylamine; dissolving the lignin with water and a sodium hydroxide solution, adding ammonium persulfate after heating, after stirring for activating, adding the chlorinated triethyl glycidyl ammonium monomer, and stirring the mixture to react to obtain a lignin quaternary ammonium salt product; and compounding the lignin quaternary ammonium salt product and cationic polyacrylamide in a weight ratio of (5-7.5): (0.015-0.03) to prepare the sewage dehydrating conditioning agent. The organic compound sewage dehydrating conditioning agent disclosed by the invention realizes resource utilization of paper mill sludge, obviously improves the sludge dehydrating property, and is small in dosage, and the feeding amount of polyacrylamide is reduced to a great extent, so that the resource utilization of follow-up sludge is facilitated.

The invention provides an anaerobic fermentation technical method of septic tank sediments under the assist of industrial waste heat, belonging to the technical field of an environment-friendly energy. The invention is characterized in that the method comprises the following steps of: taking septic tank sediments as a raw material under the condition that the temperature provided by the industrial waste heat is 55 DEG C; adding liquid dung which is adjusted to ensure that pH=7.2-7.4 and Ts=8%-10% into an anaerobic fermentation pot; stirring and fermenting the mixture; when enriched strains meet the condition that fermentation pot operates at the full load, normally generating gas; stopping stirring before fermentation gas generation reaches an inflection point at each time; extracting 2/3 fermenting fluid to produce fertilizer, fermenting the remaining 1/3 fermenting fluid to generate marsh gas; rinsing, desulfurizing, drying and storing the marsh gas in a canning way after the marsh gas enters into a marsh gas collecting tower. The invention can advance gas generating time, lift gas-generating efficiency, shorten degradation period, achieve a recycling effect since marsh residues and marsh liquid can be made into fertilizer and biotic pesticide with high quality, and simultaneously reduce sewage discharge to achieve a minimizing effect.

The invention relates to a compound flocculant with polymerization ferric chloride and amination polymers based on papermaking sludge and a method for preparing the compound flocculant. The method includes synthesizing amination polymers from the papermaking sludge generated in the papermaking industry; compounding the amination polymers and the inorganic flocculant polymerization ferric chloride to prepare the compound flocculant with the polymerization ferric chloride and the amination polymers based on the papermaking sludge. The compound flocculant and the method have the advantages that the color removal rate of disperse yellow water samples can reach 95% at least when the compound flocculant is used for treating the simulated dye water samples and the dosing quantity of the compound flocculant is 5 mg/L, excellent flocculation effects can be realized by the compound flocculant for water samples under different acidity and alkalinity conditions and other diversified water samples, the capital construction cost of reaction tanks and sedimentation tanks can be reduced, and the compound flocculant is high in electricity performance and flocculation efficiency, good in dissolving property, long in storage cycle and applicable to the field of water supply, wastewater treatment and the like and suitable for actual application to water treatment.

The invention relates to a method of preparing a lignin-based positive ion organic flocculant by using paper mill sludge. The method comprises the following steps: extracting a raw material and directly dissolving by alkali liquor; carrying out centrifugal separation to obtain supernate; adjusting the pH of the solution; placing the adjusted solution in a reactor and heating to a certain temperature; sequentially adding N,N-dimethylformamide epoxy chloropropane, ethanediamine and triethylamine; and stirring to react. According to the method provided by the invention, a quantity of amino radicals with positive charges are introduced through an ethanediamine crosslinking method to change the charge electrical property of alkali lignin, so that the potential of the prepared flocculant is +20 to 35mV and the flocculant is positive ion type, and the zeta potential is high, the flocculation efficiency is high, and the addition is about 2mg/l. Therefore, the UV254 removal rate and the DOC removal rate respectively reach 80% and 65% without adding other compounding agents. Meanwhile, paper mill sludge is recycled, so that the paper industry is in sustainable development.

The invention discloses a VOCs adsorbent prepared from hypha solid waste resources and coal, and a preparation method thereof, and belongs to the field of environmental protection, solid waste utilization and catalysis. The problems of poor adsorption performance and short service life of an existing adsorbent are solved. The preparation method comprises the following steps: mechanically mixing coking coal, asphalt, long flame coal and semi-coke powder in proportion, and crushing by a sampling machine in a unified manner; pickling and activating penicillin hyphae, curing, mechanically mixing with pulverized coal, baking soda and cured starch, adding water, and kneading; and granulating the obtained mixture, carbonizing, and washing with water to obtain the high-performance VOCs adsorbent.The high-performance VOCs catalyst is prepared by taking the waste hyphae as the main raw material, so that the problems of low activity and poor adsorption performance of the catalyst are solved, thecomprehensive utilization of hypha solid waste resources is realized, and the damage of solid wastes to the environment is reduced.

The invention relates to a method for efficiently recovering protein from excess sludge. The method comprises the following steps: adding excess sludge WAS into a reaction flask, adding APG according to the addition amount of 0.1-0.5 g/gSS, and regulating the initial pH value to 4.0-11.0; after the reaction bottle is subjected to oxygen expelling and nitrogen charging for 2-5 min, sealing the reaction bottle and carrying out constant-temperature shaking culture for WAS hydrolysis; centrifuging pretreated WAS to completely precipitate the residual sludge WAS, taking the supernatant, then adding carrageenan into the supernate, enabling the mass ratio of protein obtained by WAS hydrolysis to the carrageenan to be (25-1):1, regulating the pH value to 1.0-3.0, and oscillating at the temperature of 30-37 DEG C for 15 minutes to fully mix the carrageenan with the protein and the acid; and carrying out centrifugal treatment on the mixed solution to obtain a lower precipitate, namely the recycled protein. According to the process, after hydrolysis, the technology of combining a complex coacervation method and an acid-base precipitation method is adopted, and protein is recycled to the maximum extent through the combined action of the complex coacervation method and the acid-base precipitation method.

The invention discloses a modifier for copper-containing wastes. The modifier includes silicon, aluminum and calcium, and the sum of the weight percentages of the above main components by oxide in the modifier is 50-95%. The modifier can be used for wastes containing a small amount of residual copper (such as waste glass fiber resin powder and waste blast sand generated in the ship surface treatment process), and reacts with copper in the wastes to digest copper in the waste glass resin powder and promotes the reuse and recycling of the modified copper-containing wastes.

The invention discloses a method for treating sludge hydrolysate by fungi and recovering mycothalli. The method comprises the following steps: (1) preparing the sludge hydrolysate: carrying out pyrohydrolysis on sludge, carrying out solid-liquid separation, and taking a liquid part to obtain the sludge hydrolysate; (2) treatment of the sludge hydrolysate: sterilizing the sludge hydrolysate; (3) inoculation with fungi: inoculating the fungi into the solution sterilized in the step (2), and culturing; and (4) recycling of the mycothalli: after the culture is finished, separating the mycothalli and recycling the mycothalli. High-concentration organic matters in the sludge hydrolysate are removed by the decomposition effect of the fungi on the organic matters; meanwhile, the fungus strain takes the sludge hydrolysate as a culture medium, and mycelia are formed by growth and enrichment of the organic matters in the sludge hydrolysate, so that obtaining of the high-purity mycothalli and recycling of the subsequent mycelia can be facilitated, a recycling effect is achieved, and the method has a wide application prospect in the field of sludge treatment.

The invention discloses a method for recycling valuable metals in waste ternary lithium ion batteries. The method comprises the following steps: mixing peroxy acid and positive electrode waste, and carrying out a leaching reaction to obtain a leaching solution; valuable metals in the leachate are recovered; the peroxy acid is a peroxy acid containing a peroxy group (-O-O) and a carboxyl group (-COOH). According to the method, multiple valuable metals in the positive electrode waste can be recovered at the same time only by using one reagent of peroxy acid, the extraction efficiency is high, and the leaching time is short.

The invention relates to a method for preparing ball clay through resource utilization of urban construction engineering muck. By means of the method, resource reutilization can be effectively achieved, and the engineering residue soil is changed into ball clay used for ceramic manufacturing in the ceramic field; Meanwhile, in the ball clay preparation method disclosed by the invention, when the mixed slurry is subjected to filter pressing, ball clay with different particles can be subjected to graded filter pressing to obtain ball clay finished products with different finenesses; meanwhile, the flexible linkage mechanism can fluctuate in all directions during filter pressing, so that the whole filter screen can be driven to fluctuate up and down; the filter pressing effect is further enhanced, and blockage of the filter screen is reduced; in addition, the pressure filtration device has the advantages of obvious effect and high applicability.