40results about How to "Degradation reaches" patented technology

The invention relates to a photo/electricity Fenton device for treating refractory organic wastewater, which comprises an electrolytic cell, wherein the electrolytic cell is a reaction tank with an opening at the top end and is of a main body structure of the photo/electricity Fenton device; a cathode and an anode of the reaction tank are respectively connected with a positive electrode and a negative electrode of a direct current voltage stabilizing power supply and are respectively arranged at two ends of the reaction tank; the cathode of the reaction tank adopts an ACF (Activated Carbon Fiber) electrode, an ACF fabric is wrapped on a metal iron plate, and the reaction tank is arranged on a magnetic stirring apparatus; an aeration machine continuously inputs air to the cathode; an ultraviolet lamp tube is inserted into the center of the reaction tank; and an iron rod is inserted into the reaction tank and is arranged between the ultraviolet lamp tube and the anode. Due to the adoption of the structure, the photo/electricity Fenton device has a simple structure, and is convenient in operation and reliable in operation; and aiming at the water quality conditions of organic wastewater, the current of the photo/electricity Fenton device, the spacing between substrates and the power of the ultraviolet lamp tube are regulated, so that the effluent quality reaches the biochemical treatment requirement.

The invention belongs to the technical field of preparation of environmental materials, in particular to a method for preparing a nanocomposite photocatalyst and application of the nanocomposite photocatalyst. The method comprises the following steps: weighing graphene oxide, putting the graphene oxide in a certain amount of deionized water, and performing ultrasound concussion until complete dissolution; respectively adding cadmium chloride and zinc chloride into a graphene oxide solution, and stirring to dissolve and then adding L-cysteine to continue to stir until complete dissolution; then regulating pH to 7 with a sodium hydroxide solution, and adding sodium sulfide and then introducing nitrogen to stir for 10-15min; pouring the solution into a high-pressure reactor, then putting in a high-temperature oven for heat preservation, and finally taking out for natural cooling; after centrifuging, washing and drying the reacted solution, grinding, and thus obtaining the CdS/ZnS nanocomposite photocatalyst loaded with graphene oxide. The prepared CdS/ZnS nanocomposite photocatalyst loaded with graphene oxide can effectively utilize visible light to degrade tetracycline in antibiotic wastewater.

The invention belongs to the technical field of preparation of environmental materials, and specifically provides a preparation method and an application for a Bi2WO6/In2O3 heterojunction composite photocatalyst. According to a technical scheme of the invention, the preparation method comprises the following steps: step 1, preparation of In2O3 microflower; and step 2, preparation of the Bi2WO6/In2O3 heterojunction composite photocatalyst. The Bi2WO6/In2O3 heterojunction composite photocatalyst prepared by using the method provided by the invention is used to degrade rhodamine B in wastewater,and has good photocatalytic activity and stability.

The invention provides a magnetocaloric-pyroelectric composite material as well as a preparation method and application thereof, and belongs to the technical field of sewage treatment. The magnetocaloric-pyroelectric composite material is prepared from a magnetocaloric material and a pyroelectric material by adopting a sol-gel method, a hydrothermal method and a microwave sintering method. The composite material obtained by the invention has good stability, and contains a magnetocaloric material and can be recycled by using a magnet, so that the loss of a powder sample is small, the powder sample can be repeatedly used for multiple times, and the recycling rate is high. The composite material can be applied to degradation of organic pollutants.

The invention belongs to the technical field of environmental material preparation, and relates to a preparation method and applications of a nitrogen doped reduced graphene oxide supported CdTe/CdS heterojunction composite photocatalyst. The preparation method comprises following steps: (1) preparing nitrogen doped reduced graphene oxide (N-Rgo); (2) preparing CdTe nano particles; and (3) preparing a CdTe/CdS/N-rGO composite photocatalyst. CdTe and CdS semiconductors are used to establish heterojunction, and then N-rGO is loaded to prepare the photocatalyst, which can be used to degrade wastewater containing 2,4-dichlorophenol.

The invention provides a heterojunction micron box composite photocatalyst as well as a preparation method and application thereof. The method comprises the following steps: S1, preparing a Fe2O3 micron box; S2, preparing a Fe2O3/BiVO4 heterojunction micron box composite photocatalyst: dissolving Bi(NO3)3.5H2O in ethylene glycol, stirring particles evenly, adding the Fe2O3 powder prepared in the step S1 so as to obtain a mixed test solution 1, stirring and then standing; dissolving NH4VO3 in the ethylene glycol, slowly adding into the mixed test solution 1, and stirring to obtain a mixed testsolution 2; dissolving urea in the ethylene glycol, slowly adding into the mixed test solution 2, placing in a hot water bath for a certain period of time, and then standing; carrying out centrifugation and impurity removal treatment, then drying, and collecting solid to obtain the Fe2O3/BiVO4 heterojunction micron box composite photocatalyst. The aim of degrading antibiotic wastewater by using the Fe2O3/BiVO4 heterojunction micron box composite photocatalyst is achieved. The method does not cause resource waste and formation of additional pollution, and is simple and convenient to operate, thus being a green and environment-friendly efficient treatment technology.

The invention provides a biological organic fertilizer for recycling spent bleaching clay. The raw material formula of the fertilizer comprises the following components: 50-70 parts of spent bleaching clay, 10-15 parts of humic acid, 0.5-2 parts of composite bacteria liquid, 0.5-1 part of a complex enzyme, 5-10 parts of aluminum-magnesium silicate and 0.01-0.1 part of a plant growth regulator, wherein the composite bacteria liquid is formed by mixing culture solutions of pseudomonas, bacillus subtilis, white-rot fungi, bacillus cereus and bacillus thuringiensis according to a volume ratio of 1:(1.3-1.6):(0.5-1.1):(0.3-0.6):(0.2-0.4); the complex enzyme is formed by mixing amylase, lipase and ligninase according to a mass ratio of 1:(1.4-1.6):(0.3-0.8); and the plant growth regulator is a combination of brassinolide and one or more selected from benayl aminopurine, furfurylaminopurine and diethylaminoethyl hexanoate. The biological organic fertilizer disclosed by the invention has the effects of controlling soil pests and degrading pesticides and chemical residues in the soil, has multiple functions of curing and stabilizing heavy metal ions in the soil and the like, and is excellent in comprehensive improvement effect. Moreover, the problem that roots and seedlings are burnt is solved, and the cost is low.

The invention relates to a degradation groove suitable for degrading COD. A self sucking jet type high efficient degradation groove suitable for degrading COD is characterized by comprising a groove body, a lower diversion vertical cylinder, a slurry sucking pipe, a connection column, an air flow dispersing cylinder, a jet grid plate, an upper diversion vertical cylinder, a connection pull rod, a transmission frame, a transmission base, a diversion partition plate, an overflow groove, a central hollow shaft, a radial blade, and a rotation mechanism. The lower diversion vertical cylinder is arranged under the center of the interior of the groove body and is fixed on the bottom surface of the interior of the groove body through the connection column. The upper diversion vertical cylinder is arranged above the center of the interior of the groove body and is connected to the lower end of the transmission frame through the connection pull rod. A hole is arranged in the upper diversion vertical cylinder. The trumpet shaped jet grid plate is arranged under the upper diversion vertical cylinder. The upper end of the jet grid plate and the lower end of the upper diversion vertical cylinder are fixedly connected. The center of the middle part of the groove body is provided with the air flow dispersing cylinder. The degradation groove can realized automatic slurry suction, can fully stir materials, and is capable of degrading COD and dispersing/mixing liquid-gas/gas-liquid-solid multiphase substances.

The invention belongs to the technical field of environmental material preparation and relates to a preparation method and an application of a CQDs/CdIn2S4/N-rGO multi-dimensional photocatalyst. The preparation method comprises the following steps: (1) preparing nitrogen doped reduced graphene oxide N-rGO; (2) preparing flower-like CdIn2S4; (3) preparing CQDs; (4) preparing CdIn2S4/N-rGO; (5) preparing a CQDs/CdIn2S4/N-rGO compound photocatalyst. According to the invention, the purpose of degrading 2,4-dichlorophenol wastewater by using CQDs modified flower-like CdIn2S4 semiconductor loaded N-rGO as photocatalyst is achieved.

The invention discloses a degradable double-layer plastic express bag and a preparation method thereof. The express bag comprises an outer layer bag body and an inner layer bag body, wherein, in mass percentage, the outer layer bag body comprises the following components: 10-30% of LDPE, 50-80% of LLPDE and 10-30% of white master batches, and the inner bag body comprises the following components: 10-30% of LDPE, 50-80% of LLPDE, 1-5% of black master batches, 1-5% of an anti-block agent, and 2-4% of EPI. In the express bag, the EPI is a completely biodegradable plastic additive, and has a characteristic of oxidizing plastics so as to achieve the function of degrading the plastics and solve the white pollution problem caused by the plastics.

The invention relates to a high-energy active ion generating device and a use method thereof. The high-energy active ion generating device comprises a cavity, an air supply assembly arranged in the cavity, an ion generating module, and a sub-high pressure generator and a medium source container connected with the cavity; and the sub-high voltage generator and the medium source container respectively provide sub-high voltage and a medium. The medium flows into the ion generating module to be converted into high-energy active ions, high-flux atomized liquid drops are formed, and the atomized liquid drops are suitable for killing germs and degrading organic pollutants. The device is simple in structure, convenient to disassemble, low in production cost and convenient to maintain. According to the device, vaporific high-energy active ions are generated by utilizing the medium (such as water) under the combined action of sub-high voltage and micropores, so that the effects of degrading organic pollutants and killing germs can be achieved, and secondary pollution is avoided.

The invention relates to a composite photocatalyst by utilizing a CuInS2 quantum dot to load reduced graphene oxide (rGO) and an application thereof, belonging to the technical field of preparation ofenvironmental protection materials. According to the invention, a CuInS2 semiconductor material used as a photocatalyst is excited under visible light to realize special catalysis or conversion through an interface interaction effect with pollutant molecules, and surrounding oxygen and water molecules are excited into strong-oxidizability substances like oxygen free radicals with oxidizing forceand hydroxyl radicals, so the purpose of degrading harmful organic substances in the environment is achieved. The method provided by the invention dose not cause the waste of resources and the formation of secondary pollution, is simple and convenient in operation, and is a green, environment-friendly and highly-efficient pollution treatment technology.

The invention discloses a TiO2-doped Co composite photocatalyst, a preparation method thereof and an application of the TiO2-doped Co composite photocatalyst in treatment of phenolic wastewater. The preparation method comprises the following steps: slowly dropwise adding tetrabutyl titanate into absolute ethyl alcohol, and violently stirring for 30-60 minutes at room temperature to obtain a mixedsolution A; taking absolute ethyl alcohol, glacial acetic acid, concentrated nitric acid and a cobalt nitrate aqueous solution, and uniformly stirring to obtain a mixed solution B; and dropwise addingthe mixed solution B into the mixed solution A, stirring, standing for precipitation, washing the obtained solid with ultrapure water and absolute ethyl alcohol, drying at 100-120 DEG C, grinding theobtained solid particles into powder, calcining in a muffle furnace, cooling, and grinding again to obtain the TiO2-doped Co composite photocatalyst. The TiO2-doped Co composite photocatalyst prepared by the method has very strong electron obtaining ability, changes the movement conditions of electrons and holes, and greatly improves the photocatalytic activity.

The invention discloses a petroleum pollution remediation method, a petroleum hydrocarbon degradation agent and a flora. The petroleum pollution remediation method comprises the following steps of injecting a petroleum hydrocarbon oxidative degradation agent into a petroleum pollution plot, and after determining that a set condition is met, injecting the petroleum hydrocarbon degrading bacterial liquid into the oxidized petroleum pollution plot. The method can comprehensively utilize chemical and microbial methods to realize deep degradation of petroleum hydrocarbon in petroleum pollution plots, and has the advantages of low energy consumption, low cost and no damage to the environment.

The invention discloses a method for preparing novel and efficient reduced ion particle fillers, and relates to the technical field of preparation of chemical fillers. The method comprises the following steps: selecting the following raw materials by weight: 70%-80% of iron powder, 6%-10% of a mixture of copper and copper chloride, 5%-15% of manganese dioxide, 3%-5% of graphite powder, 1%-2% of a mixture of zinc and zinc chloride; crushing, screening and uniformly mixing all the raw materials; uniformly spraying 8% of a potassium hydroxide solution to a mixed material according to a mass ratio of the mixed material to the potassium hydroxide solution being 12:1; then performing molding, baking, staged high-temperature firing, cooling, crushing and sieving treatments to obtain the novel and efficient reduced ion particle fillers. Compared with single copper chloride or zinc chloride selected as a catalyst, a composite catalyst has a higher catalytic efficiency and has advantages in overcoming surface passivation of fillers; in addition, the 8% of potassium hydroxide solution is used as a spraying agent, so that the firing cost is greatly reduced without degrading the product performance.

The invention discloses a multifunctional split type agricultural and pastoral waste harmless treatment device, and the device comprises a first-stage biological fermentation tank and a second-stage high-temperature sterilization tank; the first-stage biological fermentation tank and the second-stage high-temperature sterilization tank are arranged on a support, the first-stage biological fermentation tank is a steel roller, and a spiral blade structure is arranged on the inner wall of the roller; the roller is connected to the transmission mechanism and can be driven by the transmission mechanism to rotate, and the spiral blade structure is driven to rotate through rotation of the roller. The second-stage high-temperature sterilization tank is arranged below the first-stage biological fermentation tank, and a discharge hole of the first-stage biological fermentation tank is communicated with an inlet of the second-stage high-temperature sterilization tank. By selecting different device components, the device can realize innocent treatment of two objects of livestock and poultry manure and livestock and poultry died of illness, and livestock and poultry manure innocent treatment equipment and livestock and poultry died of illness do not need to be purchased independently. Therefore, the device can save the harmless treatment cost of the breeding waste of the grass-roots breeding farm, and is convenient for market popularization and application of the device.