142results about How to "Meet the needs of sustainable development" patented technology

The invention discloses a high-efficient large-scale propagation technology for mycorrhiza fungi inoculum, and belongs to the field of bio-fertilizer productions. The high-efficient large-scale propagation technology suitable for mycorrhiza fungi includes material selection, production process, quality control and product formation. Materials for the technology are easy to obtain, operation is easy and convenient and cost is low. Spore density of the propagated mycorrhiza fungi inoculum can reach more than fifty per cubic centimeter, and can even reach more than one hundred per cubic centimeter, and propagation efficiency is more than four times higher as compared with conventional propagation technology efficiency. The device adopted in the technology is high in flexibility, easy to be regulated in real time and small in occupation. Detection of product quality of the mycorrhiza fungi and large-scale production thereof are facilitated. An AMF (abuscular mycorrhizal fungi) propagation technology, high-efficient and prone to large-scale production, formed in the technology, is beneficial to application of the AMF in agricultural production, and new approaches for sustainable development for agriculture are provided.

The invention discloses a preparation method for superhydrophobic superoleophilic straw fiber, belonging to the technical field of functional materials. The objective of the invention is to provide the preparation method for the superhydrophobic superoleophilic straw fiber which has cheap and easily-available raw materials, high oleophilic property and biodegradability. The method in the invention comprises the following steps: step 1, crushing straw, soaking the crushed straw in an alkali solution and carrying out pretreatment, and carrying out washing and drying; step 2, with tetraethyl orthosilicate as a silicon source, ammonia water as a catalyst and absolute ethyl alcohol as a solvent, carrying out in-situ synthesis so as to obtain straw fiber with surface loaded with silicon dioxide particles; step 3, dissolving zinc nitrate in a sodium hydroxide aqueous solution, and carrying out vigorous stirring, centrifugal separation and drying so as to obtain zinc oxide particles; step 4, preparing octyltriethoxysilane modified liquid; and step 5, taking the straw fiber in the step 2 and zinc oxide in the step 3, adding the straw fiber and the zinc oxide into the above-mentioned modified liquid, carrying out uniform mixing and dispersing, carrying out filtering separation so as to obtain the straw, and carrying out drying. The superhydrophobic superoleophilic straw fiber prepared by the method in the invention has excellent superoleophilic property and wide application space in the field of marine spilled oil cleaning.

The invention provides a graphene modified composite mesoporous carbon microsphere air purifying preparation. A certain amount of beta-cyclodextrin is added to thin-layered nano-SiO2 particles covering the surfaces of obtained micro-SiO2 particles, a certain quantity of obtained RGO / TiO2 nanoparticles is added simultaneously, -OH, -COOH, C-O-C and C=O oxygen-containing functional groups rich on the surface of graphene are adsorbed by and bonded with the RGO / TiO2 nanoparticles on the basis of the molecular recognition characteristic of beta-cyclodextrin, then a certain amount of CTAB (cetyltrimethylammonium bromide) surfactant is added, CTAB serving as a micelle stabilizer can stop the RGO / TiO2 nanoparticles from further hydrolysis and growth, and finally, the novel air purifying preparation adopting RGO / TiO2 supported by carbon microspheres with a mesoporous shell structure is obtained. With adoption of the scheme, the purity is high, RGO / TiO2 supported by the carbon microspheres with the mesoporous shell structure in powder is better in bonding performance, uniform in distribution and controllable in dimension at mesopores, and the air purifying preparation can be used for purifying polluted air and removing dust in a haze environment as well as photo-catalytically degrading and separating nitric oxide, sulfide or other organic pollutants in the polluted air.

The present invention relates to a coated granular slowly-releasing fertilizer and its preparation method. It is characterized by that the surface of the nitrogen granular fertilizer is covered witha layer of coated film, and said coated film is formed from nitro-cotton and tung oil as dry oil additive, and the coated film is 5%-30% of total weight and added quantity of tung oil is 0-20% of coated film weight. Its preparation method includes the following steps: dissolving the cellulose compound and its derivative for example nitro-cotton in solvent to obtain covering solution, said solventis ethyl alcohol and ethyl ether mixed solution, then coating surface of granular fertilizer with said covering solution, finally recovering solvent so as to obtain the invented coated granjlar slowly-releasing fertilizer.

The invention belongs to the technical field of a high-molecular material and discloses a polyamide wood-plastic composite material and a preparation method thereof. The material is prepared from the following components in parts by weight: 100 parts of nylon 6, 30-100 parts of wood filler, 5-15 parts of inorganic filler, 1-5 parts of processing aid, 0-15 parts of compatilizer, 0.5-3 parts of coupling agent, 0.2-1 part of antioxygen and 0-3 parts of lubricating agent. The preparation method comprises the following steps of: (1) adding 100 parts of nylon 6, 0-15 parts of compatilizer, 1-5 parts of processing aid and 0.2-1 part of antioxygen into a high-speed mixer to uniformly mix them at a high speed so as to obtain a mixed material; (2) adding 30-100 parts of wood fillers, 5-15 parts of inorganic fillers, 0.5-3 parts of coupling agent and 0-3 parts of lubricating agent into the high-speed mixer for uniform mixing at high speed so as to obtain a mixed material; and (3) adding the mixed material obtained in step (1) and the mixed material obtained in step (2) into a double-screw extruder for extrusion-pelleting so as to obtain a polyamide wood-plastic composite material. The material provided by the invention has better intensity and flowability, and can be injection-molded.

The invention discloses a method for preparing miscellaneous grains based on a single-screw extruder. The single-screw extruder includes a feeding system, an extrusion system and a cutting system; the extrusion system includes a cavity and a screw arranged in the cavity; the cutting system Including molding rollers and cutting rollers; the preparation process of miscellaneous grains: After stirring the whole grains and water evenly, they enter the extrusion system through the feeding system and are extruded under screw extrusion; Roll pressing, cutting roller cutting, to obtain coarse miscellaneous grains; the crude miscellaneous grains are fried or baked; the method is simple, efficient, low cost, environmentally friendly, and can be industrialized and continuous production, and the prepared miscellaneous grains taste delicious It is crispy, maintains the original taste of miscellaneous grains, can retain the rich dietary fiber, vitamin B1, flavonoids and other nutrients in the whole grains, and can improve the utilization rate of these nutrients by the human body.

The invention discloses a production method of a flame-retardant and antibacterial cotton-linen blended fabric. The production method comprises the specific process steps that a rolling and baking process is adopted to conduct functional finishing on the cotton-linen blended fabric, wherein a flame retardant CP, a fiber protectant, chitosan, citric acid, sodium hypophosphite, a penetrant JFC and phosphoric acid are dissolved in water to prepare a finishing solution, the cotton-linen blended fabric is put in the finishing solution to be dipped for 5-20 minutes, then two times of dipping and two times rolling are performed, the solution detention rate is 70%-100%, and then the cotton-linen blended fabric is dried under the condition of 60-90 DEG C, then is baked under the condition of 130-170 DEG C and is washed and dried to obtain the flame-retardant and antibacterial cotton-linen blended fabric. The flame retardant CP adopted by the method is a phosphorus based flame retardant, the flame-retardant efficiency is high, the antibacterial agent chitosan is rich in resource, is biodegradable, good in absorption performance, safe and non-toxic and can also produce a phosphorus-nitrogen synergistic effect with phosphorus based flame retardant CP, and the flame-retardant effect is improved.

The invention relates to a biodegradable composite prepreg cloth, and a preparation method and a device for the same. The composite prepreg cloth comprises a modified polylactic acid (PLA) resin accounting for 40-70 wt% of the composite prepreg and natural fiber. The preparation method comprises the following steps: conducting a continuous drying treatment on natural fiber; immersing the fiber with molten modified PLA; coating the modified PLA on the surface of the natural fiber; and rolling, cooling and winding to obtain the prepreg cloth. The device comprises an untwisting machine, an arrangement warping device, a direction control device, a friction roll, a tenslator, a film extruder, a gum dipping cooling device, and a winding device. Compared with the prior art, the invention has the advantages of large fiber draw ratio, obvious PLA enhancement effect, small wear of the extruder screw, simple process, energy saving and environment-friendliness.

The invention discloses a method for preparing inflaming-retarding wool fabric and an inflaming-retarding working solution. The working solution contains the following components by weight: 15-30% of phosphorus-nitrogen components, 0.1-0.5% of ammonia water, 0.1-0.3% of initiator and the balance water, wherein the phosphorus-nitrogen components are formed by phosphorus-containing components and nitrogen-containing components, and the weight ratio of the phosphorus-containing components to the nitrogen-containing components is 1:(0.5-1). The wool fabric to be processed is processed in the inflaming-retarding working solution in a twice-soaking twice-rolling method, the dipping time is 1-3 minutes, mangle expression is more than 90%, and the inflaming-retarding wool fabric can be obtained through steaming, washing and drying. The method can remarkably reduce using amount of the phosphorus-containing components, can improve inflaming-retarding efficiency and is favorable for industrial production.

The invention relates to a template-free two-dimensional MOF-derived carbon electrode material which is synthesized in one step at normal temperature and has high performance. According to the preparation method of the electrode material, Zn(NO3)2.6H2O, 2-methylimidazole and a surfactant are used as a raw materials, and the raw materials are synthesized in one step and then calcined to prepare anMOF-derived carbon electrode with a two-dimensional structure, wherein the 2-methylimidazole provides an N source, and the surfactant is added to increase the specific surface area. The MOF-derived carbon electrode is further activated to further control the pore structure, so that the structure of the prepared electrode structure is further optimized and then the electrode material with reasonable pore distribution and superior performance is formed. The prepared electrode material has reasonable pore size distribution, large specific surface area and high specific capacitance, is capable ofsolving the problem of adding a template and a toxic solvent in the process of synthesizing a two-dimensional MOF, is simple and convenient in preparation process and easy to get raw materials, accords with the needs of sustainable development, and is expected to achieve large-scale use in the field of supercapacitors and new energy materials.

The invention discloses a completely degradable high shock resistance composite which comprises the following components in parts by weight: 20-80 parts of natural fiber and 20-80 parts of poly(butyleneadipate-co-terephthalate) (PBAT) fiber. The invention further discloses a preparation method and an application of the completely degradable high shock resistance composite. The composite adopts the PBAT fiber as a base material, so that the composite has very excellent shock resistance and is not easy to break. In addition, a reinforcing phase and a base body of the composite are degradable materials, so that the composite is less harmful to an environment, cannot result in white pollution, and meets a requirement of sustainable development.

The invention relates to a method for oxidative degradation of lignin into aromatic monomers through molybdenum catalysis. According to the method, the oxidative degradation of the lignin is catalyzedby taking molecular oxygen as an oxygen supply and taking a non-noble metal molybdenum compound as a catalyst. According to the method, the catalytic oxidation system is simple in composition and isenvironmentally friendly, the operating conditions are moderate, and the yield of the aromatic monomers (mainly aromatic aldehyde, aromatic ketone and aromatic acid ester) in a degradation product ishigh; and possibility is provided for the high-value utilization of native lignin and even lignocellulose.

The invention discloses a method for efficiently extracting mulberry branch bark pectin. The method comprises the following steps of: (1) treating mulberry branch bark by using a greenhouse ionic liquid to separate pectin in the branch bark from cellulose and the like; (2) after treating with the greenhouse ionic liquid, adding water for dissolving the pectin in the mulberry branch bark pectin into water, and precipitating components such as cellulose, hemicellulose, lignin and the like out; (3) taking an upper layer liquid, adding cellulose for treating, and removing cellulose impurities; and (4) decolorizing a supernatant, adding ethanol for precipitating the pectin out, washing with absolute ethanol, drying, and grinding into powder to obtain mulberry branch bark pectin. In the method, the ionic liquid is taken as a treating agent for extracting mulberry branch bark pectin, so that pectin can be extracted effectively, ionic liquid treatment is only required to be performed for 20-50 minutes, the final yield of pectin can be up to about 11 percent, and the pectin extracting efficiency of the mulberry branch bark is increased.

The invention relates to a method for producing a homogenous refractory raw material by utilizing medium or low grade bauxite ore, belonging to the technical field of refractory materials. The method comprises the following process steps of: crushing and homogenizing the medium or low grade bauxite ore, and grinding the bauxite ore by a wet method into the power of 200 to 400 meshes; sorting the medium or low grade bauxite ore into different grades of products through floatation and sorting; performing product formation through filter pressing dehydration and vacuum mud extrusion; and performing product firing by drying and sintering. The method has the advantages that the alumina homogenous refractory raw material can be produced by the medium or low grade bauxite ore, so that ore resources are utilized completely and the benefit is maximized.

The invention relates to a solar intelligent street lamp system assisting in traffic control. The solar intelligent street lamp system comprises a solar power generation device converting the solar energy into the electric energy, the output end of the solar power generation device is connected to an energy storage device, the energy storage device supplies power to a controller, an illumination lamp and a camera, the controller controls the on-off state of the illumination lamp, the camera is used for shooting the road condition of the road section where the street lamp is located, and generated video information is sent to the controller; the controller is connected to a wireless sending module, the wireless sending module sends the video information to a traffic control platform, and the traffic control platform controls traffic lights of the road section in real time according to the video information. The solar intelligent street lamp system can collect the road condition information, assist in traffic control and monitor the information of left parking places, and therefore the use range of the solar street lamp is extended, and the solar street lamp can be applied and popularized easily.

The invention belongs to the agriculture plantation technical field, and specifically relates to a southern rice cropping tobacco nitrogenous fertilizer application method; the method provides dual-line M-shape ridge mode so as to increase intensity and reduce base fertilizer nitrogen proportion, and 5 times of additional fertilizer watering can effectively improve nitrogenous fertilizer utilization efficiency, thus reducing nitrogenous fertilizer waste, saving production cost, reducing tobacco leaf nicotine content, improving tobacco leaf quality, greatly reducing environment pollution caused by nitrogenous fertilizer waste, and obviously improving tobacco output, output value and quality.

The invention discloses a method for preparing harmless rock fragments by using well drilling waste liquid and an application of the rock fragments. The method comprises four steps of separation, oil removal sedimentation, oxidation sedimentation and oxidation adsorption to ensure that the well drilling waste liquid is subjected to harmless treatment, the harmless rock fragments can be separated from the well drilling waste liquid, and the rest is water which can reach an industrial water standard. The harmless rock fragments treated by a harmless technology are used as main materials for preparing dry-mixed mortar. By adopting the method, the phenomena that the petroleum drilling enterprises in the past dig pits for landfill of harmful mixed wastes, the soil is destroyed, the environment is polluted and resources are wasted are avoided; and moreover, a precedent for carrying out harmless comprehensive treatment, recycling waste mixed resources, and promoting the development of cyclic economy for the petroleum drilling enterprises to make money is opened up for the petroleum drilling enterprises, and the method meets the requirements of the strategic planning of energy saving and emission reduction comprehensive utilization during the twelfth five-year of the country. The method has considerable economic benefits and wide market application prospects.

The invention discloses high-performance concrete prepared by adopting rice hull ash, silicon ash and graphene oxide as admixtures and a preparation method thereof. The concrete per cubic meter comprises, by weight, 600-720 parts of cement, 50-100 parts of admixtures, 850-1,000 parts of coarse aggregate, 550-650 parts of fine aggregate, 90-130 parts of water and 13-25 parts of water reducing agent, wherein the admixtures are composed of the rice hull ash, silicon ash and graphene oxide according to the mass ratio of (2-10):(2-10):(0.001-0.01). According to the high-performance concrete, the rice hull ash, silicon ash and graphene oxide are adopted as the admixtures, the raw materials of the three kinds of admixtures are mutually activated, the early and later strength of the concrete can be improved, microscopic cracks of the concrete can also be effectively avoided, and the working performance and mechanical properties of the concrete can be improved. Meanwhile, the adopted admixturesrelieve the pressure of the high-strength concrete on supplying silicon ash and superfine slag powder, the utilization rate of the agricultural waste such as the rice hull as is also increased, and the requirement of sustainable development is met.

The invention provides a tubular concrete bridge pier in order to overcome the defects of an existing reinforced concrete bridge pier. The tubular concrete bridge pier is composed of a pier column lower end joint section body, more than one pier column standard joint section body and a pier column upper end joint section body. The pier column lower end joint section body is placed on a foundation, the upper end of the pier column lower end joint section body is connected with the lower end of the pier column standard joint section body, and the upper end of the pier column standard joint section body is connected with the lower end of the pier column upper end joint section body. The tubular concrete bridge pier has the advantages that the using amount of concrete is reduced compared with the using amount of the concrete of a traditional solid bridge pier, the economy is improved, and meanwhile the demand for energy conservation and emission reduction is met; a pre-tensioning method prestress component is used, so that the anti-cracking performance of pier columns is effectively improved; steel components are used between bridge pier joint sections, and the safety of bridge pier structures under the earthquake action can be effectively improved.

The invention belongs to the technical field of fertilizer and discloses an amino acid foliar fertilizer dedicated for fruit trees. The foliar fertilizer comprises the following raw materials in partsby weight: 30 to 50 parts of composite amino acid nutritional solution, 20 to 30 parts of mushroom dreg fermentation solution, 5 to 10 parts of fishbone meal, 3 to 8 parts of tea seed powder, 10 to 20 parts of biogas residue, 0.8 to 3 parts of plant growth regulator, 3 to 8 parts of potassium dihydrogen phosphate, 2 to 5 parts of urea, 0.2 to 0.6 part of medium-trace elements, 1 to 5 parts of critic acid, and 600 to 1000 parts of water. The provided amino acid foliar fertilizer is used from the start of the blossom period to the fruiting period, and can increase the sugar contain of fruits, improve the fruit quality, and increase the fruit set percentage and output.

The invention relates to a modifier for a high-liquid-limit clay pavement. According to the modifier, the basic principle is that a series of physical and chemical reactions of inorganic binders and high-liquid-limit clay are utilized, the liquid limit and the plastic index of the high-liquid-limit clay are reduced to the maximum degree, the unconfined compressive strength and the CBR strength areimproved, and the requirement for the performance of the high-liquid-limit clay pavement in the specification is met. The modifier for the high-liquid-limit clay pavement is prepared from the following raw materials in parts by weight: 107-143 parts of flue gas desulfurization gypsum, 95-122 parts of phosphogypsum, 88-117 parts of red mud, 66-158 parts of lime and 380-460 parts of pulping white mud. According to the modifier, the doping amount of the modifier in the using process is 10-15% of the mass of dry clay, the liquid limit of modified clay is 45-53%, the plastic limit is 33-40%, the plastic index is 13-19, the 7d unconfined compressive strength of the modified clay is 0.4-1.0 MPa, and the soaking 4d CBR strength is 10-20%. The modifier has the advantages that multiple industrial solid waste compound modification is adopted, so that the high-liquid-limit clay is modified from standard waste clay which is not allowed to be used into a roadbed filler capable of being utilized, meanwhile, the construction performance and strength of the high-liquid-limit clay are improved, and the construction cost is lowered.

The invention discloses a method for preparing biodiesel by directly using cellulose through mixed fermentation. The mixed fermentation is performed by using a plant fiber degrading strain and a grease producing strain, and ethanol is produced by directly using natural plant fiber such as straws. The method comprises the following steps of: designing a culture medium for the mixed fermentation by optimization methods such as a response surface method, and optimizing to obtain the fermentation conditions such as the optimum temperature of mixed fermentation, optimum mixing proportion of strains and optimum mixing time of the strains by utilizing the methods such as orthogonal test and response surface methodology; according to the optimized fermentation conditions, by using the plant fiber as a carbon source, degrading the cellulose into fermentable sugar by using a cellulase producing strain, and adding grease-producing microorganisms into the culture system for the mixed fermentation; and by using the sugar which is produced by the constant enzymolysis of the plant fiber as the carbon source, fermenting to produce grease by using the grease producing strain, and performing methyl esterification reaction of the microbial grease to obtain the biodiesel.

The invention discloses high-performance artificial sand concrete prepared by using mountain flour and rice hull ash as admixtures. One cubic meter of concrete is prepared from the following raw materials in parts by weight: 500 to 650 parts of cement, 60 to 140 parts of admixtures, 1000 to 1100 parts of coarse aggregates, 650 to 730 parts of artificial sand, 150 to 170 parts of water and 13 to 18parts of water reducing agents, wherein the admixtures are the mountain flour and the rice hull ash. In the used mixed admixtures, the mountain flour and the rice hull ash have rich resources; the raw materials are cheap and can be easily obtained; by selecting the mixed admixtures in the proper proportion, high-performance concrete with good work performance and higher compressive strength is obtained; the utilization rate and the additional value of the mountain flour and the rice hull ash are improved; meanwhile, the use quantity of cement is reduced; the supply pressure of the high-performance concrete on the cement and superfine slag powder is relieved; the concrete manufacturing cost is reduced; the sustainable development requirements are met.

The invention provides a cultivation method of rice stubble flue-cured tobacco. By improving the planting density of the rice stubble flue-cured tobacco and reducing the nitrogen fertilizer consumption, especially, increasing the topdressing fertilizer nitrogen ratio, reducing the nitrogen fertilizer consumption at the early stage, increasing the topdressing fertilizer application frequency, applying topdressing fertilizer nitrogen and water and other measures and other group regulation and control cultivation techniques, not only the high quality and reasonable yield of the rice stubble flue-cured tobacco can be guaranteed, but also the nitrogen fertilizer utilization efficiency of the flue-cured tobacco can be significantly improved, and a green, nitrogen-reducing, high-yield synergy effect can be achieved.

The invention relates to grape residue sludge-based high-efficiency biological carbon and a preparation method and application thereof and relates to the technical field of solid waste treatment and recycling. The grape residue sludge-based high-efficiency biological carbon is prepared from dry sludge and dry grape slag through activation and pyrolysis. The grape residue sludge-based high-efficiency biological carbon has high adsorption and decontamination ability. The preparation method comprises mixing dry sludge and dry grape slag, grinding the mixture, adding a chemical activator into thepowder, carrying out dipping activation for 20-30h, carrying out pyrolysis on the product at 400-700 DEG C in the inert gas atmosphere for 30-120min, adding an acid to immerse the product, washing theproduct through water until pH of 7 and carrying out drying. The preparation method has simple processes and realizes a low cost and recycling of solid wastes. The grape residue sludge-based high-efficiency biological carbon is used for sewage treatment, realizes disposal of wastes from wastes and satisfies the requirements on sustainable development.

A method using high bauxite crushed aggregates to produce and prepare sintered alumina belongs to the technical field of a refractory raw material production technology and a bauxite ore using technology. High bauxite crushed aggregates are used as a main raw material, and industrial aluminum oxide powder is used as an auxiliary material; and the sintered alumina is prepared by adopting a continuous production process of raw material grading, homogenizing, continuous burdening, wet ball grinding, slurry deironing, spraying drying, mechanical pressing, drying, high temperature sintering, and crushing grading through controlling process parameters. The method has the advantages of efficient use of the refractory high bauxite crushed aggregates, low cost of production raw materials, environment friendly process and controlled product quality.

The invention discloses an intelligent power energy storage system and method based on the internet of things. The system comprises a natural energy power generation unit, a central distribution control system, an energy storage device, a load end, a monitoring and management system, a network module and a remote server terminal. The electric energy produced by the natural energy power generationunit is distributed to the energy storage device for charging and the load end for power consumption through the central distribution control system. The monitoring and management system is communicatively connected with the remote server terminal through the network module. The natural energy power generation unit comprises a photovoltaic power station, a wind power station and a geothermal energy power station. The photovoltaic power station comprises an automatic sun tracking photovoltaic panel matrix and a light detecting and controlling device. The automatic sun tracking photovoltaic panel matrix detects sunlight rays in multiple directions through the light detecting and controlling device to adjust its attitude to receive sunlight for photoelectric conversion. The energy storage device comprises a storage battery and an automatic temperature control battery rack. The system greatly improves the photoelectric conversion efficiency and ensures the operation safety of the electricenergy storage.

The invention provides an intelligent spinning bike. Pedaling frequencies of users can be sensed by virtue of a photoelectric sensor, and subsequently, the pedaling frequencies can be fed back to a control system and matched musics, which are same with the rhythms of the pedaling frequency, can be searched; by virtue of a program which is implanted into the control system, the frequencies of the musics can be divided in accordance with difficulty degrees; integrals, which correspond to the difficulty degrees of the musics, can be generated after each music is completed; the grades of the userscan be divided in accordance with accumulated integrals, and grade data of the users can be uploaded by virtue of the control system in a networking mode; and in addition, in order to protect the users, who participate in vicious competition and blindly pursue the improvement of the grades, from getting injured, and even dying suddenly, due to excessive motions, the control system can also send proper reminding in accordance with the frequencies of the users using the spinning bike and motion intensity, so that the interesting of using the spinning bike is enhanced, and moreover, a safety performance is guaranteed.

The invention relates to preparation of an inorganic salt-derived porous carbon electrode, particularly relates to preparation of porous carbon from potassium benzoate through one-step carbonization without additives or one-step improvement of the performance of the porous carbon by adding an activating agent, and belongs to the fields of supercapacitors and new energy materials. An electrode preparation method adopts the potassium benzoate as a raw material to prepare porous carbon without the need of additives, and a prepared carbon electrode has properties not worse than those of supercapacitor porous carbon electrodes prepared by a plurality of complex methods. If an activating agent is added during preparation for activation, the properties can be further improved. Potassium benzoateis abundant and inexpensive, and potassium carbonate is generated during high-temperature carbonization to etch a carbon skeleton to produce a porous structure, which can effectively reduce the use ofa large number of corrosive compounds. The raw material is easily available, the preparation process is simple, and the conditions are mild. The pore size is adjustable, the electrochemical performance is superior, and the porous carbon electrode is very suitable for large-scale production.

The invention discloses a technology for processing wastewater with high contents of zinc, ammonia nitrogen, and thiourea, and belongs to the field of wastewater processing. The technology mainly comprises five processing processes: zinc removal, ammonia nitrogen removal, thiourea removal, biochemical treatment, and deep flocculation and sedimentation. First three steps are used to remove zinc, ammonia nitrogen and thiourea; thiourea is oxidized and decomposed; the biochemical treatment is carried out to remove organic substances in wastewater, residual ammonia nitrogen, total nitrogen, and COD are further removed in the biochemical treatment; then in the deep flocculation and sedimentation step, fine suspensions are removed, qualified residual wastewater is discharged, and whole processing is finished. The provided technology is used to process wastewater with high contents of zinc, ammonia nitrogen, and thiourea; the zinc ions of the wastewater are removed, the energy consumption is reduced; the byproducts are recovered; the technology meets the environment protection requirements and generates good economic benefits, and sustainable development is realized.