31results about How to "Will not cause secondary environmental pollution" patented technology

The invention relates to an artificial wetland composite matrix for nitrogen and phosphorus removal of rural sewage and a preparation method thereof. The artificial wetland composite matrix comprises the following components in percentages by weight: 50% of coarse sand, 30% of gravel, 4% of wood dust, 10% of titanium-making waste slag, 3% of steel-making blast furnace slag and 3% of steel slag. The preparation method of the artificial wetland composite matrix comprises the following steps: airing required raw materials of the artificial wetland composite matrix to dryness; crushing the titanium-making waste slag through a 2cm sieve screen, and uniformly mixing the coarse sand, the gravel, the wood dust, the steel-making blast furnace slag and the steel slag in percentage by weight so as to prepare the artificial wetland composite matrix. The artificial wetland composite matrix for nitrogen and phosphorus removal of rural sewage and the preparation method of the artificial wetland composite matrix have the following advantages that (1) the technology is simple and easy to carry out; (2) the raw materials are sufficient, low in cost and easily obtained from the market; (3) the formula of the raw materials is reasonable, and each raw material is particularly effective; (4) the formula of the raw materials is innocuous and unpoisonous without causing secondary environmental pollution.

The invention relates to a low-temperature drying device for high-water-content high-viscosity sludge. The device comprises a drying chamber and a heat pump system communicating with the drying chamber; the drying chamber is provided with a material inlet strip cutting machine and a secondary strip cutting machine, the material inlet strip cutting machine is used for primary cutting of the sludgeconveyed into the drying chamber, and the secondary strip cutting machine is used for secondary cutting of the sludge during conveying of the sludge; and the heat pump system adopts a high-temperaturerefrigerant, and the heat pump system is used for heating and dehumidifying the drying chamber. According to the low-temperature drying device provided by the invention, secondary cutting is performed on the sludge, so that the forming effect of the cut strips is better, the cut strips are finer and no longer adhere to one another, and the drying effect of the sludge is greatly enhanced; and at the same time, the high-temperature refrigerant is adopted as a refrigerant, so that the drying device has a higher energy efficiency ratio and higher drying efficiency, and can satisfy drying treatment of the high-viscosity sludge with a water content of 60-85% and turn a sludge cake with a water content of 85% into sludge particles with a water content of 30% or less by one drying.

The invention discloses an MVR belt sludge drying machine which comprises a drying box body, an auxiliary box body, a sludge forming device, at least one layer of mesh belt, a vapor heater, an MVR vapor compression device and a sludge heat exchanger, wherein the auxiliary box body 2 is connected with the drying box body 1 through an air duct; the mesh belt is arranged in the drying box body; the sludge forming device is arranged above one end of the mesh belt, and is used for squeezing sludge to be dried into strips to be sent to the mesh belt; the MVR vapor compression device and the vapor heater are mounted in the auxiliary box body on the side of the drying box body. The sludge is subjected to drying treatment through circulating vapor of the MVR vapor compression device and the vapor heater; the MVR belt sludge drying machine adopts MVR vapor compression work and conducts totally closed operation, the condensing temperature is increased through vapor compression, the purpose of cyclic utilization of heat is achieved by utilizing heat exchange by the vapor heater 5, and the operation cost is reduced.

A process for preparing the composite enzyme for the feed includes such steps as mixing tangerine peel with soybean dregs and wheat bran, adding less inorganic salt and water, stirring, sterilizing, cooling, inoculating a kind of Aspergillus, solid fermenting and drying.

The present invention relates to a long-efficient oil-smoke purification system with similar three shapes, which belongs to the technical field of the environmental protection, and is mainly applied to the fields having the oil smoke, hazardous gas and dust in the catering industry, and is composed of a main body, an oil-smoke waste-gas inlet, and an oil-smoke waste-gas outlet, a plurality of front guiding plates, a plurality of rear guiding plates, a plurality of absorption liquid containers, a blower, etc. and has simple and practical structure, and has the self-washing function and the function that the purified oil-smoke waste-gas product can be automatically discharged. The purification rate of the long-efficient oil-smoke purification system can reach 95 percent or more, thus can guaranteeing the function that is available for decades of years: the area that is used for absorbing the oil-smoke waste gas with the water is more than twenty times of that of the original oil-smoke waste-gas water absorption. The absorption liquid that is based on the water completely adopts the secondary water that is used for washing the tableware everyday to be mixed with little detergent or vinegar and to be filled into the main body so as to compensate the shortage water in the liquid absorption containers, so that the oil stain on different parts inside the main body is removed to the sewer, thereby preventing the reducing substance that is produced by the treated oil-smoke waste gas from secondarily polluting the environment, and can substitute different short-period invalid oil-smoke purifier and the oil-smoke waste-gas exhaust funnel that is communicated with the top part of the high-rise building, and influences the harmoniousness of the environment and do not have the air-pollution prevention function.

The invention discloses an electrostatic field fresh-preservation storehouse for fruits and vegetables, and relates to a storehouse body for keeping fruits and vegetables fresh after pre-cooling. The fresh-preservation storehouse comprises a storehouse body, a compressor, a fin coil, an electric field generator, an electrode plate, goods shelves, a storehouse door, a floor and the like. For the problems of mildewing and quality deterioration of fruits and vegetables caused by excessive humidity during storage of fruits and vegetables, the electrostatic field fresh-preservation storehouse can produce ozone to effectively kill microorganisms on surfaces of the storehouse body and the fruits and vegetables, and can decompose ethylene produced by the fruits and vegetables to alleviate after-ripening of the fruits and vegetables. The assembled electric field fresh-preservation storehouse is convenient to mount, easy to operate and free of pollution to the fruits and vegetables, reduces rotten fruits and vegetables during storage, prolongs the storage time, ensures the quality of the fruits and vegetables, is easily popularized and applied, and is suitable for processing and fresh-preservation treatment in producing places of the fruits and vegetables.

The invention discloses a hook arm garbage can, which relates to the technical field of environmental protection machine manufacturing. The hook arm garbage can comprises a can body, wherein garbage openings are formed in the two sides of the top part of the can body; one side of the can body is provided with a movable door, and the other side of the can body opposite to the movable door is provided with a hook arm; a sealing rubber strip is arranged between the movable door and the can body; cover plates are arranged on the garbage openings; sealing rubber strips are arranged on the edges of the cover plates and the edges of the garbage openings; the can body is internally provided with glass fiber cloth and an epoxy glass reinforced plastic coating; wheels are arranged at the bottom of the can body. By adopting the hook arm garbage can, the problems that the conventional garbage can is not attractive in appearance, is not convenient for hoisting and transporting of garbage and causes secondary pollution to the environment in the garbage transferring and transporting processes can be solved.

The invention provides recycling methods of normal hexane in a silica-based aerogel preparation process and belongs to the technical field of novel material preparation. A water-phase extraction method is that ethanol in the normal hexane is removed by utilizing deionized water, the normal hexane is purified, a certain amount of deionized water is added in recovered normal hexane mother solution, and the solution is oscillated, stood and separated. An anhydrous calcium chloride method is that the normal hexane is purified by utilizing the principle that reaction of the ethanol and anhydrous calcium chloride can generate a stable complex at normal temperature, a certain amount of anhydrous calcium chloride is added in the recovered normal hexane mother solution, the solution is oscillated, stood, filtered and separated, and the purity of the recovered normal hexane is detected under the same gaseous phase condition. The purity of the normal hexane purified by the two methods reaches above 99%, the normal hexane can be recycled in the silica-based aerogel preparation process, and further preparation cost of silica-based aerogel is reduced. The two methods have the advantages of being easy in reaction control, simple in technical process, low in cost and the like.

The invention discloses a compound fertilizer. The compound fertilizer is mainly prepared from 5-20% of monoammonium phosphate, 3-5% of phosphate ore, 1-3% of lime powder, 4-15% of potassium chloride, 10-15% of ammonium chloride, 15-20% of humic acid and the balance plant ash. According to the compound fertilizer, adopted components are most common materials in daily production, the fertilizer efficiency is high, and secondary environment pollution can be avoided; crop increment can be prompted, and thus the compound fertilizer has potential large-range use and popularization value.

The invention relates to a thermochemical sludge treatment system. The treatment system comprises a homogenizer, a mixer, a reaction kettle, a transducer system, a decompressor, a dewaterer, a reflux water tank, a reflux water pump and a material delivery pump; the homogenizer is provided with a raw sludge material inlet, the material delivery pump is installed on a connecting pipeline arranged between the homogenizer and the input end of the mixer, the output end of the mixer is connected with the input end of the reaction kettle through a pipeline, and the output end of the reaction kettle is connected with the transducer system through a pipeline; the transducer system, the decompressor, the dewaterer, the reflux water tank and the reflux water pump are sequentially connected through pipelines, the reflux water pump delivers liquid in the reflux water tank to the transducer system, and then a transducer and water circulation system is formed. The invention further discloses a thermochemical sludge treatment technology which comprises the steps of sludge homogenizing, secondary heating, thermochemical reacting, transducer system, heating treating and the like. The thermochemical sludge treatment system and technology have the advantages of being low in cost and energy consumption and high in sludge treatment efficiency.

The invention discloses compound fertilizer for agriculture and relates to the technical field of agricultural fertilizer. The compound fertilizer comprises, by mass, 20 to 40 parts of nano-chitosan-modified attapulgite, 20 to 40 parts of humic acid, 8 to 22 parts of ammonium bicarbonate, 10 to 30 parts of methylene succinic acid, 5 to 15 parts of diphosphorus pentoxide, 10 to 30 parts of triacontanol, 5 to 10 parts of potassium sulfate, 10 to 30 parts of sodium octahydrate tetrahydrate and 5 to 10 parts of ferrous sulfate. The compound fertilizer utilizes raw materials most commonly used in daily production, has a scientific formula, contains nutrients required in a crop cultivation process, has good fertilizer effects, does not cause secondary environmental pollution, improves soil hardening, repairs and the ecological environment of the soil, is conducive to crop yield increasing and has a potential value in wide range promotion and use.

The invention discloses a novel paper insect sticking plate which comprises degradable and environment-friendly copper paper, and insect sticking glue and insect sex pheromone which are adhered to the copper paper. The novel paper insect sticking plate is characterized in that the insect sticking glue comprises the following components in percentage by weight: 3 to 4 percent of an acrylic acid monomer, 30 to 52 percent of an acrylic acid soft monomer, 2 percent of aids, 2 percent of a modifier, 0.2 to 0.4 percent of a non-ionic emulsifier, 0.2 to 1 percent of an anionic emulsifier, 0.1 to 0.5 percent of an initiator, 0.2 to 0.4 percent of a preservative, 0.05 to 0.08 percent of a defoaming agent and 37.62 to 57.25 percent of deionized water. The novel paper insect sticking plate has the beneficial effects that the degradable copper paper is provided, so that secondary environmental pollution is avoided; the novel insect sticking glue has the characteristics of no toxin, and high and durable stickiness; meanwhile, the insect sticking glue is combined with the insect sex pheromone, so that the novel paper insect sticking plate also can be used for preventing and controlling various pests.

The invention relates to an asphalt desulfurization device and method. The asphalt desulfurization device comprises a desulfurization tank, a regeneration tank, a precipitation tank and a standing tank, wherein a desulfurization pipe and a desulfurized gas outlet are arranged above the desulfurization tank; a spraying nozzle is arranged at the lower section of the desulfurization pipe; the spraying nozzle is connected with an outlet of a high-pressure circulating water pump through a pipeline; an inlet of the high-pressure circulating water pump is connected with the standing tank through a pipeline; the method comprises the following steps: carrying out chemical desulfurization and carrying out photocatalytic desulfurization; conveying desulfurized gas, gas generated by regeneration and residual gas generated in a precipitation process into a photocatalytic device through an exhausting pipe and carrying out secondary desulfurization; then discharging gas subjected to two times of desulfurization into the atmosphere. According to the asphalt desulfurization device and method, provided by the invention, chemical and photocatalytic two-grade desulfurization is carried out and the desulfurization effect is remarkable; the desulfurization tank utilizes a power principle and the contact area between desulfurized liquid and flue gas is large and the reaction effect is good; a desulfurization agent can be circularly utilized after being regenerated and resultants are simple and can be effectively reutilized according to actual conditions, so that secondary environment pollution isnot caused.

The invention discloses a method for treating low-boiling-point volatile organic contaminated soil through carbon dioxide. The method comprises the working procedures of site pretreatment, material preparation, site construction, soil remediation and the like. The method comprises the following steps: uniformly mixing a mixture of active magnesium oxide powder and quicklime powder into the volatile organic contaminated soil, and carrying out a violent chemical reaction with subsequently introduced carbon dioxide to generate a relatively high temperature and release a large amount of heat so as to promote rapid pumping and removal of high-concentration volatile organic pollutants in the soil; the gel generated by the carbonization reaction not only bonds the soil particles, but also wraps and seals the residual low-concentration organic pollutants in the soil. The volatile organic pollutants in the soil can be efficiently treated within a short time through the dual effects of high-temperature pumping and discharging removal and wrapping and sealing of the cement. According to the method, the low-carbon cementing material magnesium oxide is utilized, remediation application of carbon dioxide in volatile organic contaminated soil is achieved, and the method has the advantages of being low in energy consumption, high in treatment efficiency and the like.

The invention discloses a belt type concentrated liquid evaporating, crystallizing and drying machine. The machine comprises a box body and at least one layer of crystallization carrier mesh belt arranged in the box body, wherein the crystallization carrier mesh belt is provided with carrier filler for carrying concentrated liquid to be crystallized and dried. The machine disclosed by the invention has the following advantages: high-concentration waste liquid discharged by various devices can be fully evaporated and crystallized, the concentrated liquid can be reduced by 80% or more, and the removal rate of non-volatile substances in the waste concentrated liquid can reach 95% or more; a low-temperature fully-closed drying process is adopted to inhibit volatilization of volatile gas to ensure safe operation; no tail gas is discharged, so that an additional odor treatment system is not needed; and the whole drying process can be performed under closed environment conditions, so that nogas is discharged to the external environment, and secondary environment pollution can be avoided.

The invention is applicable to the technical field of water body restoration, and provides a PGPR ecological restoration agent and a preparation method thereof, and the preparation method comprises the following steps: S1, culturing bacillus; s2, culturing lactic acid bacteria; s3, culturing the photosynthetic bacteria; s4, culturing saccharomycetes; s5, centrifuging and separating; s6, strain mixing; s7, adding vitamins, and stirring; the product obtained by the PGPR ecological restoration agent and the preparation method provided by the invention has a good water body restoration function, can purify water, is ecological and environment-friendly, and does not cause secondary environmental pollution, and when the product obtained by the PGPR ecological restoration agent and the preparation method provided by the invention is applied, the product has a good application prospect. Vitamin in the carrier is an indispensable growth factor for growth and reproduction of microorganisms, and endogenous indigenous microorganisms and exogenously added microorganisms can be quickly activated when the vitamin is put into a water body; the microorganisms and activated indigenous microorganisms in the product can provide food for zooplankton in the water body.