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81results about How to "Improve secondary pollution" patented technology

Method for removing cyanogens-containing waste gas

InactiveCN102734812AHigh catalytic activity and selectivitySimple ingredientsMolecular sieve catalystsIncinerator apparatusChemistryNitrogen gas
The invention relates to a method for removing cyanogen-containing waste gas. A catalytic removal reaction is carried out on cyanogen-containing waste gas by using a transition metal supported mesoporous molecular sieve catalyst, wherein a mesoporous molecular sieve carrier is MCM-41, MCM-48, SBA-15, SBA-16, KIT-5 or KIT-6; a transition metal active component is one or more of Cu, Co, Cr, Mn, Ag or V; and the mass ratio of the carrier to the transition metal component is 1;(0.02-0.07). The method comprises the following steps: placing the molecular sieve catalyst in a fixed bed quartz reactor; introducing a mixed gas of the cyanogens-containing waste gas, oxygen and nitrogen into a reaction furnace at the space speed of 17000-24000h<-1> at normal pressure under the condition that the temperature of the reaction furnace is raised to 350-650 DEG; and removing the waste gas through catalytic combustion. The prepared catalyst is used for inspecting the selective catalytic combustion of the cyanogens-containing waste gas, has the characteristics of low combustion starting temperature and high N2 selectivity, and is suitable for efficient purification of the cyanogen-containing waste gas.
Owner:BEIJING UNIV OF CHEM TECH

Microbial bacterium agent for degrading Chinese kitchen refuses and preparing method thereof

The invention discloses a microbial bacterium agent for degrading Chinese kitchen refuses, which contains the components by mass ratio: protein degrading bacteria: starch degrading bacteria: fat degrading bacteria: cellulose degrading bacteria= (1-2):(1-2): (1-2):(2-3). Simultaneously, the invention further discloses a preparing method of the microbial bacterium agent. Aiming at components of refuses in domestic kitchens, the corresponding microbial bacteria are adopted for gradual degrading, finally the purpose of completely degrading the refuses is achieved, not thorough degrading and long time consumption of the traditional land filling mode and large secondary pollution and high energy consumption of the burning mode are avoided, and the microbial bacterium agent for degrading Chinese kitchen refuses and the preparing method of the microbial bacterium agent can meet the present low carbon, environmental protection and energy saving requirements.
Owner:田兴军 +1

Antibacterial fiber and preparation method thereof

ActiveCN103774265AEasy to weave and shapeEasy to weave into shapeFilament/thread formingMonocomponent polyolefin artificial filamentFiberAntioxidant
The invention relates to an antibacterial fiber and a preparation method thereof. The antibacterial fiber prepared by the invention comprises the following components of characteristic matters in parts by weight: 100 parts of a polymer, 10-50 parts of ZnO catalytic particles, 0.2-1.5 parts of coupling agent, 0.1-0.5 parts of antioxidant and 0-50 parts of plasticizer. The antibacterial fiber provided by the invention is not treated by toxic organic matters and is free from secondary pollution. The catalyst used is rich minerals, so that the antibacterial fiber is convenient for industrial production, low in cost and simple in preparation process. The utilization efficiency of an antibacterial agent is improved, the degerming rate is fast and the removal rate is high due to the antibacterial fiber. The antibacterial fiber is easy to weave and form and high in soaping degree and can be repeatedly used.
Owner:无锡国纳超纤科技有限公司

Vacuum stirring composite granule reinforcing aluminium-based composite material and preparation technique thereof

The invention relates to a composite material of vacuum churning composite granule enhanced aluminum matrix and a preparation technique, which comprises: Si 0-15Wt%, Mg 0-1.5Wt%, Cu 0-2.0Wt%, Mn 0-1.0Wt%, Cr 0-0.4Wt%, Ti 0-0.2Wt%, SiC 0.1-20% (volume proportion). Firstly base alloy is smelted, slag is removed, and refined, churned slowly in vacuum to complete degassing procedure for base melt, the pre-treated enhanced granule is continuously added into the aluminum base melt, mechanical churning to roll the granule into the melt, after the granule is completely rolled in the melt, strong churning and slow churning in reverse direction are conducted so as to disperse the granule evenly in the base; the temperature raises, modifier and refiner are added; the vacuum is dismounted, and placed in static, the floating slag is removed above the melt, and cast. The composition between the granule and the base is realized via vacuum mechanical churning, the joining interface is good, the enhanced granule is evenly dispersed in the base, the prepared composite material has low porosity rate, which is easy to realize industrial mass production.
Owner:GUIZHOU BRANCH CHINA ALUMINUM IND +1

Method and apparatus for immobilizing cells to treat wastewater

The invention discloses a method and apparatus for immobilizing cells to treat wastewater wherein abandoned mycelium is used as a carrying agent for co-immobilization of white-rot fungi and bacteria, the enzyme system in the bacterium group is employed for coupled catalytic degradation of heterocyclic compounds and phenol in the waste water at the presence of oxygen supply. The device includes a reactor with moving sieving board and an oxygen supplying device.
Owner:NANJING UNIV OF TECH

Purifying system for multi-phase photocatalysis treatment of waste gases

A purifying system for multi-phase photocatalysis treatment of waste gases relates to a purifying system for titanium dioxide photocatalysis degradation treatment of the waste gases. The purifying system can be a filling type waste gas purifying system and a spraying type waste gas purifying system and mainly comprises a blower, a waste gas disperser, a reaction chamber, an ultraviolet light tube, a nano titanium dioxide suspension and the like. The purifying system provided by the invention has the advantages as follows: the structure is simple, the use is flexible and convenient, various organic waste gases or reducing waste gases can be treated, and suitability for treatment of various industrial waste gases is achieved; the waste gas treatment is complete, the purifying rate is high, the secondary pollution problem is avoided, and environmental protection is facilitated; and the applicability is high, and the popularization and the application are convenient. The purifying system provided by the invention can be extensively applied to treatment of various industrial waste gases in large, medium-size and small-sized factories and is an ideal purifying system for gas-liquid-solid multi-phase photocatalysis treatment of the waste gases.
Owner:CHONGQING UNIV

Method for transplanting and maintaining finished printed circuit board product with multiple types

The invention relates to a method for transplanting and maintaining a finished printed circuit board product with multiple types mainly for a multi-type finished printed circuit board product with a bad printed circuit board slice which can be recovered into a good product through a serial processing and maintenance method. The method comprises the following steps: removing the bad printed circuit board slice so as to form a through space joined with a side board and milling combination parts containing a first combination part and a second combination part on the side board; cutting a good printed circuit board slice which can be accommodated in the through space of the finished printed circuit board product and reserving a joint pin which is closely connected with the first combination part and corresponds to the second combination part at intervals on the periphery; sticking an adhesive tape at the bottom of the joint part of the finished printed circuit product; transplanting the cut good printed circuit board slice in the through space of the finished printed circuit board product and closely connecting the joint pin with the first combination part of the side board; filling glue in an adhesive groove formed between the joint pin and the second combination part of the side board of the transplanted good printed circuit board slice and solidifying the filled glue. A good product can be recovered by the method so as to achieve the purposes of improving the utilization rate, reducing material waste, reducing the production cost and meeting the requirement of environmental protection.
Owner:诺亚电子股份有限公司

Boron-doped non-metal catalyst as well as preparation method and application thereof

The invention discloses a boron-doped non-metal catalyst as well as a preparation method and application thereof. The preparation method comprises the following steps: adding a carbon material into anacid solution, heating and soaking the carbon material, filtering the solution, and washing the carbon material with ultrapure water, and drying the carbon material; dispersing the material into a volatile solvent, adding a boron-containing precursor, heating the material in an oil bath, washing the material with ultrapure water after the reaction is finished, and drying a product; and roasting the product in a non-oxidizing atmosphere to obtain the boron-doped non-metal catalyst. The low-toxicity boron-doped non-metal catalyst is used for replacing a high-toxicity heavy metal catalyst, has the characteristic of environmental friendliness, has a good degradation and removal effect on organic pollutants, and shows extremely high catalytic activity and a wide application range.
Owner:TAIYUAN UNIV OF TECH

Livestock and poultry dung or urine deodorizing method and uses thereof

InactiveCN101172745ANo investment costReduce dosageSludge treatmentSuperoxidePeroxidase
The invention relates to a poultry waste deodorization method and the application thereof. The invention is characterized in that: firstly, peroxidase solution of 0.5U / mL to 1.5U / mL and hydrogen peroxide solution of 1 to 4 percent is made up, and the peroxidase solution is sprayed on the poultry waste (spraying 3mL for each liter of waste), and then the hydrogen peroxide solution with the same volume is sprayed, or calcium superoxide powder of 75 percent (spraying 0.3 to 0.5 g for each liter) is sprayed. Using the principle that the peroxidase ensures that the aromaticity compound is catalyzed and oxidized to free radical to be decomposed and eliminated by using peroxide or calcium superoxide as an electron acceptor in the range of having wider temperature, PH value, pollutant concentration and salinity, the bad smelly produced by poultry waste in a poultry cultivation farm is eliminated. The deodorization method is simple without any complex facility, and any staff and device are not needed to be increased having no investment cost and having low running cost. The deodorization effect is obvious and can last for a long time, and secondary pollution can not be caused. The invention has application prospect in the meager profit industry of livestock breeding.
Owner:NINGBO UNIVERSITY OF TECHNOLOGY

Preparation method for Cr (III) ion composite imprinted polymer adsorbent

The invention discloses a preparation method for a Cr (III) ion composite imprinted polymer adsorbent. The adsorbent takes Cr (III) ions as template ions, and adopts collagen and acrylic acid as difunctional monomers. In a polar solvent, N, N-methylene bisacrylamide and a micromolecular crosslinking agent undergo crosslinking, azodiisobutyronitrile is used as an initiator to initiate preparation of the Cr (III) ion composite imprinted polymer adsorbent. The adsorbent prepared by the invention has excellent selective absorption on Cr (III) ions, fast adsorption and elution rate, high elution efficiency, and can be recycled.
Owner:SHAANXI UNIV OF SCI & TECH

Treatment and reutilization method of organic and inorganic compound polluted loess leaching liquid

The invention discloses a treatment and reutilization method of organic and inorganic compound polluted loess leaching liquid. The treatment and reutilization method comprises the following steps: putting an organic and inorganic compound body, a loess ferromanganese nodule and losses clay mineral into a granulating machine according to the mass ratio of (10 percent to 40 percent) to (10 percent to 40 percent) to (10 percent to 40 percent) and granulating; in a granulating process, adding a gypsum solution to prepare an adsorbent for carrying out adsorption treatment on the organic and inorganic polluted loess leaching liquid containing organic chlorpyrifos pesticide and inorganic heavy metal Pd / Cd. According to the treatment and reutilization method disclosed by the invention, the concentration of Pb and Cd in an adsorbed solution is detected; after the concentration reaches the standard, the solution can be directly reused for agricultural irrigation and drop irrigation and the aim of recycling and reutilizing the chlorpyrifos pesticide and other nutrients in the solution is realized. The adsorbent obtained by precipitation and centrifugal separation is safely backfilled or used in other ways, such as a road construction axillary material and a building axillary material.
Owner:SHAANXI UNIV OF SCI & TECH

Preparation method of montmorillonite as novel overflowed oil pollution absorbing material

The invention relates to a preparation method of montmorillonite as a novel overflowed oil pollution absorbing material, which comprises the steps of: preparing montmorillonite into a turbid liquid, wherein the mass proportion of water to soil is 10:1-20:1; adding dodecylbetaine (BS-12) or dodecyl sulfobetain (SB-12) as a green surface active agent, stirring for 5-10min to ensure that the green surface active agent is dispersed uniformly; ultrasonically treating for 10-20min; carrying out solid-liquid separation by using a filtering method, washing with water; and drying, crushing and the like. The invention has the advantage that the green surface active agent can generate ion exchange action with positive ions among the montmorillonite to enter among montmorillonite layers to ensure that the dewatering property of the montmorillonite can be enhanced and the swelling performance is improved, thus the oil spilling pollution can be more effectively held back.
Owner:GUANGZHOU INST OF GEOCHEMISTRY - CHINESE ACAD OF SCI

Heavy metal contaminated soil degradation harmless treatment method

The invention discloses a heavy metal contaminated soil degradation harmless treatment method which comprises the following steps: S1, detecting and analyzing heavy metal contaminated soil, and determining the dosage of a heavy metal contaminated soil degradation repairing agent; S2, preparing the heavy metal contaminated soil degradation repairing agent; S3, leaching; S4, applying the heavy metal contaminated soil degradation repairing agent, and performing ploughing and mixing; S5, planting plants which are suitable for local growth and have enrichment capacity; and S6, detecting until the heavy metal content in the soil reaches the safety standard. Harmless treatment of the heavy metal contaminated soil is achieved, and the requirements of resource utilization, soil replacement and landfill are met; the technology application range is wide, and the method is suitable for remediation of various soils contaminated byheavy metals,including chromium, hexavalent chromium, lead, zinc, copper, chromium, nickel, mercury, arsenic and the like; the technical operation is simple and convenient, the repairing time is short, the capacity increase is less, secondary pollution is avoided, and the cost is lower; and the resource utilization of the polluted soil can be realized, and the repaired soil is suitable for various purposes.
Owner:益壤(厦门)环保科技有限公司

System for treating volatile organic compound, nitric oxide, and oxysulfide by using photocatalyst

The invention provides a system for processing volatile organic compound, nitric oxide, and oxysulphide by using photocatalyst, wherein conventional washing tower is improved, lighting equipment is mounted in washing tower with smoke-fog collection device in the outlet, TiO2 photocatalyst solution is used as cleaning liquid or added into cleaning liquid, to decompose volatile organic compound, nitric oxide, and oxysulphide from chemical industry production under proper flow rate and reaction time, which make exhaust gas component up to environmental-protection standard.
Owner:ONID TECH

Multiple-effect compound fertilizer and preparing method and application thereof

The invention provides multiple-effect compound fertilizer for repairing cadmium soil pollution. The multiple-effect compound fertilizer comprises nitrogen, phosphorus and kalium nutritious components, rare earth element nitrate for agricultural use, waste catalyst agents, Chinese herbal medicine, humic acid mineral powder, sepiolite, plant ash, kaolin and zeolite components, wherein the rare earth element nitrate for agricultural use, the waste catalyst agents, the Chinese herbal medicine, the humic acid mineral powder, the sepiolite, the plant ash, the kaolin and the zeolite components are used according to a proper ratio. After the compound fertilizer is applied to soil polluted by cadmium, the cadmium in the soil is effectively passivated and fixed through the synergistic effect of the components while the polluted soil is effectively repaired, the activity of cadmium in the soil is remarkably lowered, absorption of cadmium by crops is lowered, and thus the content of cadmium in the crops is lowered remarkably. Complex improver has good stability and environment-friendly performance and is free of secondary pollution and low in cost, and large-area popularization is easily implemented; when the fertilizer is applied to soil polluted by cadmium, the application amount is only 10-200 kg / hm<2>, and the content of cadmium in the crops can be lowered remarkably and meets the national food safety standard.
Owner:江西省山江湖开发治理委员会办公室

Pr<3+>:Y2SiO5-TiO2-ACF visible-light response type photocatalytic composite membrane and preparation method thereof

The invention discloses a Pr<3+>:Y2SiO5-TiO2-ACF visible-light response type photocatalytic composite membrane and a preparation method thereof. The composite membrane is prepared by loading nano-TiO2 doped with Pr<3+>:Y2SiO5 to the surface of an activated carbon fiber. The composite membrane can solve the separating and recycling problems of a catalyst obtained after pollutant treatment and also can reuse the catalyst, and meanwhile a substrate enrichment environment can be generated on the surface of TiO2 through the high adsorption property of the activated carbon fiber, so that the contact chance of the catalyst and the pollutants is increased; accordingly, the prepared Pr<3+>:Y2SiO5-TiO2 composite material based on the activated carbon fiber carrier can achieve a synergistic effect of adsorption and photocatalysis, improve the pollutant removing efficiency and particularly achieves a good effect when the composite material is used for visible-light catalytic degradation on methylene blue.
Owner:NANJING UNIV OF SCI & TECH

Pretreatment device and soil in-situ remediation system

The invention discloses a pretreatment device and a soil in-situ remediation system, relates to the technical field of soil remediation and is designed for solving the problems of secondary pollutionand non-ideal remediation effect in the existing soil remediation process. The pretreatment device comprises a closed chamber, a crushing and screening device which is arranged in the closed chamber and a waste gas treatment device; the crushing and screening device is fixedly provided with a first blower; and the waste gas treatment device is used for treating gas in the closed chamber and exhausting the gas out of the closed chamber. The soil in-situ remediation system comprises the pretreatment device, a conveying device, a stirring device and a medicament storage device which provides a medicament for remediating soils into the stirring device, wherein the conveying device, the stirring device and the medicament storage device are arranged in the closed chamber. The pretreatment deviceand the soil system thereof provided by the invention are used for remediating the soils and exhausting the waste gas produced in the remediating process after treating the waste gas.
Owner:TIANJIN ACADEMY OF ENVIRONMENTAL SCI

Method for intensively removing heavy metals in sludge by utilizing electroosmosis dehydration device

The invention discloses a method for intensively removing heavy metals in sludge by using an electroosmosis dehydration device. The method for intensively removing heavy metals in sludge by using an electroosmosis dehydration device comprises the following steps of: adding a certain mass of inorganic salt or chelating agent into sludge, uniformly stirring to obtain mixed sludge, setting electroosmosis dehydration process parameters, and dehydrating the mixed sludge by using the electroosmosis dehydration device to remove the heavy metals in the mixed sludge, the chelating agent being an organic acid containing at least one carboxyl group, and being easy to chelate with heavy metals in the sludge. By adding the inorganic salt or the chelating agent into the sludge, the removal rate of heavymetals in the sludge in the electroosmotic dehydration process can be increased, meanwhile, the moisture content of a sludge cake of the dehydrated sludge is low, the effective volume reduction of the sludge is realized, and the subsequent treatment and utilization of the sludge are facilitated; the added inorganic salt does not cause secondary pollution to the sludge, and the added chelating agent is degradable and environment-friendly.
Owner:CHINA UNIV OF GEOSCIENCES (WUHAN)

Method for co-processing waste incineration fly ash as admixture by cement kiln

The invention discloses a method for co-processing waste incineration fly ash as an active admixture by a cement kiln. The method comprises the following steps: (1) oxidizing, curing and modifying; (2) granulation treatment; and (3) carrying out synergistic treatment to obtain the active admixture. The method is low in investment, low in treatment energy consumption, low in treatment cost, free ofsecondary pollution and easy to apply and popularize; heavy metals in the waste incineration fly ash are converted into an ionic state by using a modification treatment agent and are solidified and stabilized by using high-activity aluminosilicate groups; secondary pollution possibly caused by heavy metals, influence on a kiln system and influence on the cement hydration performance are prevented; all carbon-containing organic pollutants including dioxin are cleanly burnt out in a high-temperature alkaline dust oxidizing environment, heavy metals and alkali are fused through silicon-aluminumradical / silicate radical / aluminate radical lattices, chlorine and sulfur are converted into calcium chloro-aluminate and calcium sulfoaluminate minerals, which do not corrode reinforcing steel bars and have an early strength property, and energy saving and emission reduction are facilitated.
Owner:长沙紫宸科技开发有限公司

Integrated multifunctional smoke purifying filter element

InactiveCN105126610ALow construction and operating costsLess workload for operation and managementDispersed particle filtrationActivated carbonEnvironmental chemistry
The invention belongs to the field of environmental protection, and relates to an integrated multifunctional smoke purifying filter element. The integrated multifunctional smoke purifying filter element comprises a component A and a component B, wherein the component A comprises 30 to 55 parts of diatomite, 5 to 8 parts of aluminum powder, 10 to 25 parts of clay, 10 to 18 parts of calcium carbonate, 10 to 30 parts of manganolite, 13 to 33 parts of bitumite, 12 to 16 parts of iron ore, 5 to 11 parts of titanium ore, 1 to 5 parts of nickel powder and palladium powder, and 10 to 2 parts of silica sol; the component B comprises 20 to 30 parts of active carbon, 20 to 30 parts of manganese dioxide, 2 to 6 parts of pore-forming agent, 1 to 2 parts of curing agent, 10 to 20 parts of No. 500 cement, 1 to 2 parts of water impregnating agent and 10 to 18 parts of water. By adopting the integrated multifunctional smoke purifying filter element, different contaminants in the smoke are concentrated in a same container to be crossly treated. By adopting the integrated multifunctional smoke purifying filter element, not only is less investment needed, but also the process is simple; a selective catalytic oxidation neutralization absorption method (SCN method) is used for treating the smoke so as to purify the smoke, and the method also can be named as low-temperature treatment method. A product treated by adopting the method is convenient to recycle, secondary pollution and waste can be avoided, income benefit can be created, and the invested capital can be recovered.
Owner:王涛

Membrane separation device and method for purifying after-treatment mother liquor

The invention relates to a membrane separation device for purifying after-treatment mother liquor. The membrane separation device comprises a to-be-recycled solvent tank for storing the after-treatment mother liquor, a filter for removing polymer powder and impurities, a reverse osmosis membrane device used for desalting, and a permeable membrane distillation device used for dewatering and concentrating, which are connected in sequence. The invention also relates to a membrane separation method for purifying the after-treatment mother liquor. The membrane separation method comprises the following steps: a, pretreatment: removing the residual polymer powder and the impurities from the after-treatment mother liquor stored in the to-be-recycled solvent tank by using the filter; b, reverse osmosis: desalting the pretreated after-treatment mother liquor by using the reverse osmosis membrane device; c, permeable membrane distillation: dewatering and concentrating the desalted after-treatment mother liquor by using the permeable membrane distillation device, discharging concentrate and purifying process water. The membrane separation device and the membrane separation method have the advantages that water, solvent, inorganic salts and a small amount of solid impurities can be separated very well; secondary pollution is avoided; the separation effect is good; the device and the method belong to the field of polymer solution concentrating and recycling.
Owner:KINGFA SCI & TECH CO LTD

Method and device for combined electrochemical cathode and anode treatment of wastewater

The invention discloses a method and device for combined electrochemical cathode and anode treatment of waste water. The electrochemical treatment device comprises: an electrolytic cell; a diaphragm arranged in the electrolytic cell to divide the electrolytic cell into an anode chamber and a cathode chamber which are independent of each other. Wherein the anode chamber and the cathode chamber are respectively used to treat oxidizable and reducible organic waste water; the diaphragm is a polypropylene membrane, the pores of which allow inorganic ions to pass through but not allow organic molecules to pass through; at least one anode and at least one cathode, the at least one anode disposed in the anode compartment, and the at least one cathode is disposed in the cathode compartment. When the electrochemical treatment device of the present invention is used to treat waste water, the positive and negative electrodes function simultaneously, so that the treatment efficiency is greatly enhanced compared with that of a single electrode.
Owner:CANGZHOU FENGYUAN ENVIRONMENTAL PROTECTION SCI & TECH

High temperature-resistant micro-expansive caulking mud and preparation method thereof

The invention discloses a high temperature-resistant micro-expansive caulking mud and a preparation method thereof. The preparation method comprises the following steps: step 1, dissolving sodium bicarbonate powder in water and taking a saturated solution of the dissolved sodium bicarbonate as an expanding agent; step 2, separately grinding 50 to 60% of bauxitic clay clinker, 20 to 30% of clay, 10 to 20% of fine slag powder and 2 to 6% of alum to respective standard particle size ranges; and step 3, adding the expanding agent solution containing 1 to 3% of sodium bicarbonate into bauxitic clay clinker, clay, fine slag powder and alum and carrying out stirring. With such a technical scheme, defects of secondary pollution, easy falling and high cost of conventional stemming caulking technology are overcome, and the caulking mud provided by the invention has high strength and can meet requirements on caulking of joints of cover plates. The production cost of the caulking mud provided by the invention is 1 / 3 of the production cost of the stemming, so blast furnace production cost is reduced; moreover, the caulking mud does not cause secondary pollution, thereby substantially promoting environmental protection.
Owner:BAOSTEEL STAINLESS STEEL

Unloading device matched with rotary excavating machine and method

The invention discloses an unloading device matched with a rotary excavating machine. A funnel-shaped body, a vibrating mechanism, a spraying mechanism, a warning mechanism, a first support, a secondsupport and a controller are included; the bottom side of the funnel-shaped body is in contact with or is connected with the first support, and is suspended on the ground under supporting by the firstsupport; pad feet are installed on the bottom side of the first support; the funnel-shaped body is provided with a feeding port or a discharging port; the second support is installed on the inner side of the feeding port; the vibrating mechanism is installed on the outer side of the funnel-shaped body so as to assist waste in a funnel in breaking away from the funnel-shaped body; the spraying mechanism is installed in the feeding port of the funnel-shaped body; and the vibrating mechanism and the warning mechanism are electrically connected with the controller. The unloading device matched with the rotary excavating machine can be used for conveniently achieving recycling of solid waste in a mine.
Owner:山东省地质矿产勘查开发局八〇一水文地质工程地质大队 +1

Comprehensive treatment system for dicamba high-salt-content wastewater

The invention discloses a comprehensive treatment system for dicamba high-salt-content wastewater. The system comprises a coagulation reaction unit, an air flotation sedimentation unit, a composite filtration unit, a pH adjustment unit, an evaporation crystallization unit, a neutralization unit, a micro-electrolysis unit, and a Fenton reaction unit and a membrane separation unit which communicatethrough a pipeline in sequence. According to the system provided by the invention, a micro-electrolysis reaction device, an MVR evaporator and a Fenton reaction device are adopted together, so that the problem that the dicamba wastewater has a high salt content, thereby having secondary pollution to the receiving environment is improved, and the system not only has the effects of making the wastewater degraded more fully and thoroughly and recovering useful matter, but also has the effects of being capable of reducing energy consumption and reducing operating costs and wastewater treating time.
Owner:NANJING UNIV OF TECH +1

Preparation and application of catalyst suitable for treating organic waste gas through low-temperature plasmas

The invention belongs to the field of catalysts, and relates to preparation and application of a catalyst suitable for treating organic waste gas through low-temperature plasmas. The catalyst is prepared through an impregnation method; and transition metal silver and manganese are mixed, stirred, ultrasonically vibrated, subjected to still standing, dried, roasted and cooled together with an SBA-15 molecular sieve according to a certain proportion, and then the catalyst is prepared. According to the prepared catalyst, the VOC degrading efficiency can be improved greatly, generation of harmfulby-products is restrained, the disadvantages that as for treating of the organic waste gas through the low-temperature plasmas, the energy utilization rate is low, and the treating effect is poor canfurther be overcome, meanwhile, energy consumption is lowered, and secondary pollution is reduced.
Owner:NANJING UNIV OF TECH

Preparation method of inorganic porous ceramic membrane

The invention relates to a preparation method of an inorganic porous ceramic membrane, comprising the following steps: weighing: weighing raw materials, pore-forming agents, and sintering aids according to a certain ratio, and mixing them; wet grinding and dry grinding; granulation; molding molding; sintering. The prepared ceramics have large flux, high compressive strength, good reproducibility, and uniform porosity of the ceramic membrane; the inorganic ceramic membrane has high temperature resistance, good acid and alkali corrosion resistance, high compressive strength, high renewable utilization rate, No secondary pollution and other characteristics. The removal rates of COD, oil content and suspended solids in water are 82.3%, 85.3% and 89.6% respectively, which can achieve good oil removal effect; the modified ceramic membrane is backwashed and regenerated under the condition of 0.05MPa water washing, and its clear water Flux was recoverable to 94.7%.
Owner:CHANGZHOU JINSHAN ENVIRONMENTAL PROTECTION TECH CO LTD
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