169results about How to "Protect the natural environment" patented technology

The invention discloses a whole-body polished porcelain tile having three-dimensional stone texture and a production method of the tile. The tile comprises a whole-body colored blank layer, a ground coat layer, a pattern decoration layer, a three-dimensional stone texture layer and a surface decoration layer. The production method comprises steps as follows: 1) a whole-body colored blank is prepared; 2) the ground coat layer on the blank surface is formed; 3) the pattern decoration layer is formed; 4) ink or glaze having a dent effect is applied to the pattern decoration layer, a pattern corresponds to pattern texture of the decoration layer, and the three-dimensional stone texture layer is formed; 5) the surface decoration layer is formed; 6) a roller kiln is formed through sintering; 7) a finished product is obtained through polishing, edging and packaging. The surface color of the product produced with the scheme is integrated with the color of the blank, the stone texture changes naturally with the pattern texture of the product, the texture layer is protected by the surface decoration layer, and the tile has the decoration effect of natural stone. Properties of the product are superior to those of the natural stone, mining of the natural stone can be effectively reduced, and the natural environment is protected.

Production of special organic biological fertilizer for nutritive tea is carried out by crushing fowls and animals feces 650-750 proportion and plant straw 280-320 proportion into powders, mixing, stacking, adding into yeast ferment 0.8-1.2, aerobic fermenting, controlling water content to 55-65%, raising temperature after 48 hrs between 55-60 degree, tipping pile for 3-5 times, fermenting 14-16 days, decreasing water content to 20-30% to obtain rotted organic fertilizer, putting EM stock, red sugar, VC and water into fermenter, culturing for 5-7 days to obtain EM polyhydric enzyme, adding DA-60.1-0.15, selenium 0.09-0.1, molybdenum 0.09-0.1, magnesium 0.6-0.8, EM polyhydric enzyme 1.5-2 and vitamins B 0.1-0.15 into rotted organic fertilizer and anaerobic fermenting for 7-15 days to obtain the final product. It has more soil organics and tea yield and better tea quality.

The invention relates to a method for preparing asphalt pavement material by adopting waste concrete. The method produces regenerative aggregate as asphalt pavement material by adopting waste concrete, and comprises the steps of waste concrete pretreatment, high temperature calcinating and grinding, cement mortar grinding and material mixing and stirring; regenerative coarse aggregate replaces natural aggregate with the proportion of 20 to 60 percent by weight, therefore combined aggregate with the temperature of 170 to 190 DEG C is obtained, asphalt at 145 to 165 DEG C is added and then stirred with cement mortar powder, and then the asphalt pavement material is obtained, and the contents of the combined aggregate, the asphalt and the cement mortar powder are 96 to 91 percent, 3 to 5 percent and 1 to 4 percent respectively. The method has the advantages that the waste concrete can be effectively utilized, the coarse aggregate can be recycled, the cement mortar powder can also be recycled, the mixture with the strength and the durability meeting pavement requirements is obtained, and great promotion effect can be produced for the resource recycling, the natural environment protection and the ecological equilibrium.

The invention discloses a color glass-reinforced plastic profile material made from a novel reclaimed material. The color glass-reinforced plastic profile material is made from raw materials, such as recycled PVC (polyvinyl chloride), modified nano calcium carbonate, a calcium zinc stabilizer, stearic acid, di-n-octyl phthalate, plasticizer, chlorinated polyethylene, ABS (acrylonitrile-butadiene-styrene) high rubber powder, polyethylene wax, paraffin, acrylate impact modifier ACR, MBS (methyl methacrylate), iron oxide red, carbon black and a pigment. According to the color glass-reinforced plastic profile material, the calcium zinc stabilizer substitutes a lead salt stabilizer, so that the color glass-reinforced plastic profile material is safer and harmless and does not affect the health of human bodies. A waste glass-reinforced plastic profile material or an unqualified glass-reinforced plastic profile material is effectively utilized, so that the reutilization of the glass-reinforced plastic profile material is realized, a large number of raw materials are also saved in a production process, white pollution is reduced, our natural environment is more protected, and the policy requirements of energy conservation and environment friendliness are met. The profile material made from the recycled PVC has all the characteristics of the profile material made from the raw materials as well as the characteristics of smoother surface, better density, better toughness and the like.

The invention relates to a method for treating expansive soil channel side slopes with geogrids. The method comprises the following steps: (1) foundation cleaning: side slopes are excavated according to the requirements of the working drawing to remove the quick soil on the slope surface and the channel base; (2) lofting; (3) geogrid paving: geogrids are paved manually in a layered way, inverted wrapping overlap is formed by wrapping upward on the slope surface, and abutment joint is adopted between each two adjacent geogrids; the tail part of the geogrid and an unexcavated slope surface form upward extending along the slope surface, a connecting rod is adopted for the overlap between geogrids, and a U-shaped reinforcing bar is adopted between a geogrid and soil mass for anchor joint; and (4) soil laying and rolling construction. The method has the advantages that the structure formed by the geogrids and expansive soil can solve the problem that the expansive soil slopes are not stable, and simultaneously the channel excavation waste material can be reasonably utilized, therefore the purpose of stable structure, economical efficiency and reasonableness is achieved.

A portland cement clinker is prepared from lime stone (73-86 wt.%), iron ore tailings (5-18), flyash (2-12), and cinder (1-8) through compounding. Its advantages are low energy consumption and low pollution.

The invention provides a large-sized filling bag embanking method and equipment for filling an embankment by using dredged soil. The method comprises the following steps: (1) designing the depths and the distances of soft soil foundation plastic water drainage plates under the embankment, finishing the construction of the water drainage plates, and mounting monitoring facilities in the soft soil foundation; (2) finishing one layer construction of a sand quilt layer and a soft soil row; (3) processing large-sized filling bags for future use for by using polyester woven fabric; (4) mounting dredged soil filling equipment; (5) mounting an evacuating device; (6) laying an evacuating water drainage pipe network; (7) laying the filling bags and carrying out filling construction; (8) mounting an embankment surface sealing system; (9) opening an evacuating system to accelerate drainage consolidation of a dredged soil filling body and simultaneously developing relevant monitoring and detecting works; and (10) finishing an open sea side protective surface structure and an inland sea side protective slope structure in time by using the full embankment body rising process so as to reinforce the protection of the embankment body. The equipment used by the method provided by the invention is filling equipment for the dredger fill filling bags. According to the invention, the embankment building cost is reduced, the environment is protected, the stability of the embankment is guaranteed, and the clay particle content of the filling body is 10%.

The invention provides a carbon-based material and a preparation method thereof. The preparation method comprises the following steps: step 1, mixing starch and water according to a mass percentage ratio of 1:(1-1.5) to obtain a primary material; step 2, carrying out freeze drying on the obtained primary material at a temperature of from -50 DEG C to-70 DEG C for 20-50 hours; step 3, carrying outhigh-temperature carbonization on the material obtained in the step 2 to prepare a carbon foam substrate; and step 4, soaking the carbon foam substrate prepared in the step 3 into a dopamine solutionfor 24-48 hours, then carrying out drying at room temperature to obtain the dopamine-deposited carbon foam substrate. The carbon-based material prepared by mixing the starch and the water is a naturalporous structure formed after a flour sample is carbonized, and the structure has special significance for interfacial photo-thermal conversion.

The invention discloses an energy-saving and environment-friendly boiler which comprises a boiler body. An inner cavity of the boiler body is divided by a partition plate into a water tank and a combustion chamber. The water tank is located on the top of the combustion chamber. An insulation jacket is arranged on the periphery of the water tank in a surrounding mode. A ceramic heat conductive pipe is fixedly installed in the water tank. An inner cavity of the combustion chamber is divided by a small-hole partition net into a combustion bin and a dust collection bin. One side of the combustion bin and one side of the dust collection bin are provided with a slag outlet and a dust discharge outlet respectively. The front face of the combustion bin is further provided with a fuel inlet. One side of the combustion bin is fixedly connected with an air blower through an air inlet pipe. According to the energy-saving and environment-friendly boiler, the structure is simple, use is convenient, oxygen can be provided into the combustion chamber, fuel is more sufficiently combusted, energy is saved, heat preservation can be achieved for the water tank, the heat loss is greatly reduced, direct emission of harmful gas is avoided, and the natural environment is effectively protected.

The invention relates to a lightweight gypsum block and its preparation method. The block comprises the following components, by weight, 70-80% of desulfurized gypsum, 10-15% of ultrafine steel slag powder, 10-15% of perlite, 1-1.5% of a steel slag excitant, 0.3-0.5% of PP fiber, 0.05% of a retarder, 0.01-0.05% of a foaming agent and the balance water. According to the invention, industrial waste residues such as desulfurized gypsum, steel slag and the like are used as main raw materials to prepare the gypsum block, thus opening up a new way for comprehensive utilization of industrial solid wastes. Production cost of the gypsum block is reduced, and dual effects of environmental protection and waste utilization are achieved. Due to the addition of the ultrafine steel slag powder and the excitant, strength and water resistance of the product are enhanced. The prepared gypsum block has effects of light weight, sound insulation, thermal insulation, moisture retention and the like, and has good anti-seismic property. According to the invention, a new way for resource utilization of the solid wastes desulfurized gypsum and steel slag is opened up, natural environment is protected, and resources and energy are saved.

The invention discloses a method for producing a solanaceous vegetable seedling growing substrate by utilizing a salvaged material of cassava processing. Cassava peels and starch residues are used as main raw materials, chicken manure and seed tung tree bran or chicken manure and shell powder are used as auxiliary materials, and the excellent solanaceous vegetable seedling growing substrate is produced through fermentation. The substrate is light and loose, has the advantages of good permeability, good water holding and fertilizer retaining abilities, and balanced, scientific and reasonable nutrient supply, can meet the balance demand of solanaceous vegetable crop seedlings on nutrients during a whole growth period, and effectively improves the survival rate, the stress resistance and the growing seedling quality of the solanaceous vegetable growing seedlings. The method realizes harmless treatment and resource utilization of the salvaged material of cassava processing, avoids great waste of resources and serious pollution of the environment, provides a new way for comprehensive utilization of the agricultural salvaged material, reduces the substrate production cost, reduces excessive exploitation of peat resources, protects the natural environment, and has wide application value.

The invention relates to a method for preparing active slag powder and aggregate from treated waste concrete in a vertical kiln factory. According to the method, vertical kiln concrete production line process equipment is used; crushed waste concrete is roasted at 980 DEG C to 1280 DEG C in a vertical kiln; then, cleavability power grinding and sorting are carried out; active slag powder and active aggregate are prepared. The method has the advantages that the vertical kiln concrete production line equipment can be used; all ingredients of waste concrete components are simply, conveniently and effectively utilized at low cost; excellent active slag powder and excellent active aggregate with higher additional values and wide market purposes are produced.

The invention relates to a protection method for a slope with the mixture of soil and rock, and belongs to the technical field of environmental engineering. The method comprises the steps that firstly, the slope is cleaned flatly and cleanly, four holes are drilled in every square meter of the slope in a pressurizing manner, and then the drilled holes are filled with film materials containing moss; and small holes are drilled in the middles of the drilled holes and filled with sewage, nutrient substances are provided, and after the moss grows to a certain degree, gaps between the soil and the rock are completely filled. The protection method has the beneficial effects that the gaps between the soil and the rock can be completely filled effectively, and the gaps can resist to the impact of debris flow; and meanwhile the concrete is not needed for coverage of the gaps, ecological greening is facilitated, and the surrounding nature environment is protected.

The invention discloses a green rainwater collection and sewage interception system for building districts, which comprises a plurality of subsystems which are serially connected and arranged in a low-altitude greenbelt in a district. Each subsystem comprises a sewage interception infiltration subsystem and route infiltration drainage subsystem. Rainwater flowing in the system is subjected to accumulation, storage, infiltration, detaining and energy dissipation, and amount of thermal rainwater discharge is reduced greatly. When permeating a permeable filling layer, a water-holding garden planting soil layer, a filling layer of the water-holding garden planting soil layer, a filling layer of a filling well and the like outside the system, the rainwater is adsorbed, infiltrated and held, and pollutant carried by the rainwater is removed effectively. Amount and quality of collected water are controlled at the terminal of the system, and the terminal rainwater can be collected for reuse or drained into a municipal rainwater network. In addition, flowing time of the rainwater in drainage is prolonged, urban rainwater flood peaks can be lowered, urban living environment can be beautified, and natural hydrographic cycle balance can be maintained.

The invention discloses a cyclic planting and breeding method for fish, shrimps, vegetables and paddy rice. The method is characterized in that a slope with the gradient ranging from 5 degrees to 20 degrees is selected; the slope has a safe water source and is built by a higher layer, a middle layer and a lower layer; the higher layer of the slope is a planting area; the middle layer of the slopeis a breeding area; the lower layer of the slope is a purification area; or, the higher layer of the slope is a breeding area; the middle layer of the slope is a purification area; the lower layer ofthe slope is a planting area; sewage in the breeding area flows and is pressed into the purification area through a pipeline; after being biologically decomposed and filtered through the purificationarea for first purification, sewage flows into or is pumped into the planting area and absorbed by plants for secondary purification; after first purification and secondary purification, water qualitymeets the standard of water utilization for high-quality breeding; then, sewage flows into or is pumped into a breeding pond in order to achieve cyclic utilization; and the area ratio of the plantingarea, the breeding area and the purification area is 5:1:1. The cyclic planting and breeding method for fish, shrimps, vegetables and paddy rice has advantages of high cultivation density, low planting and breeding cost and good quality. Additionally, culture sewage is reutilized so that natural environment is protected.

The invention relates to a dispersing absorption type cooling system, comprising a high evaporation temperature cooling loop, a low evaporation temperature cooling loop and a heat retriever that can respectively independently run; the high evaporation temperature cooling loop comprises a first generator, a gas-liquid separator, a condenser and a first evaporator and a first absorber; the first generator is driven by external heat source and connected with the condenser through the gas-liquid separator; the heat retriever is in series connection between the gas-liquid separator and the condenser. The dispersing absorption type cooling system of the invention, because including two respectively independently cooling loops with different evaporation temperatures, can efficiently use the remaining heat, the waste heat, the solar energy, the gas and the power energy as energy to cool and generate sanitary hot water, thus effectively performing energy replacement and improving comprehensive utilization of the energy, which is beneficial to solve the problem about shortage of power and environment protection radically in our country and to improve the energy consumption efficiency at the same time of protecting the natural environment of earth.

The invention discloses a recycled concrete polyphenyl particle light thermal insulation hollow building brick and a preparation method thereof. The recycled concrete polyphenyl particle light thermal insulation hollow building brick comprises the following raw material components in parts by weight: 420 kg of cement, 185 kg of water, 1,152 kg of recycled coarse aggregate, 622 kg of fine aggregate and 0.35 m<3> of polyphenyl particles. The preparation method comprises the following steps of: (1) firstly, placing and uniformly stirring the fine aggregate, the cement and the polyphenyl particles; (2) stirring while adding the water to fully contact cement slurry with the polyphenyl particles, fully adhering boundaries of two phases, and fully wrapping the particles with the cement slurry; and (3) finally adding the recycled coarse aggregate, stirring while adding water to uniformly distribute various raw materials, and controlling concrete vibrating time to be 10-15 seconds. By using the recycled concrete polyphenyl particle light thermal insulation hollow building brick and the preparation method thereof, the waste concrete and the polyphenyl particle garbage can be fully utilized, the strength of the building block meets the requirements of the non-load-bearing walls, and the building block has the advantages of light weight, thermal insulation, heat insulation, environmental friendliness and the like.

The invention relates to the technical field of ceramics, and particularly relates to a black glaze prepared by utilizing a manganese ore tailing residue as a main raw material. A blank formula of the black glaze prepared by utilizing the manganese ore tailing residue as the main raw material comprises a manganese tailing, clay, quartz, mica, potash feldspar, limestone, zinc oxide and polyacrylamide; a glaze formula of the black glaze prepared by utilizing the manganese ore tailing residue as the main raw material comprises the manganese tailing, the potash feldspar, the clay, the quartz, calcium oxide, barium carbonate, sodium borate, SeO2 and ZrO2. According to the invention, the tailing generated after a recovered manganese ore is refined is recycled into the production of the ceramic black glaze; an artistic glaze variety with a black glaze surface is produced and capable of covering luster emitted from a small amount of Ti and Fe which are contained in a glaze blank; a large quantity of manganese ore tailings substitute most of porcelain clay mines to be utilized as raw materials, so that the discharge quantity of the tailings is reduced, the bearing pressure of a tailing dam is reduced, the environmental pollution is reduced, the development of a porcelain clay resource is saved, the development and utilization of precious porcelain clay mines are reduced, and the natural environment is protected.

The invention discloses a method for preparing high-performance concrete, which comprises the steps of determining concrete design parameters according to the performance requirements of the concrete,and obtaining the detection data of the raw materials by detecting the raw materials for preparing the concrete; determining the water consumption of the concrete mixture, the utilization amount of acementing material, and the utilization amounts of cement, slag powder and fly ash according to the concrete design parameters and converting the apparent density of the cement, the slag powder and the fly ash into the mass amount according to the raw material detection data; determining the sand rate according to the particle size of coarse aggregate, determining the amount of fine aggregate according to the sand rate, and converting the apparent density of the coarse aggregate and the fine aggregate into the mass amount according to the raw material detection data; determining the water quantity required to be added to the concrete mixture, and determining the volume-weight of the concrete mixture ratio according to the mixing amount and the water reducing rate of the water reducing agent and the water content of the sand. The method for preparing high-performance concrete achieves the purpose of high-performance concrete preparation with less raw materials detection, thereby increasing the working efficiency and the reliability, reducing the enterprise cost, and protecting the environment.

The invention relates to a method for producing an environment-friendly composite building material by utilizing industrial solid wastes. The method comprises the following steps: a, drying the industrial solid wastes and then pulverizing the industrial solid wastes by using a pulverizer until the granule diameter is less than 1mm; b, adding 10% of modified organic-inorganic composite binder taken as a binding material, 5% of chlorinated paraffin, 5% of octyl epoxy stearate and 10% of dimethyl isophthalate taken as a plasticizer into 70% of industrial solid waste granules and evenly stirring; c, plastifying the evenly-stirred materials in a rolling manner by using a plasticator so as to obtain a clinker billet, discharging the clinker billet from the plasticator and put into a prefabricated pressure mould and drying for 10 to 20 minutes under the pressure of 400 tons and at the temperature maintained within 90 DEG C to 100 DEG C, thereby obtaining the environment-friendly composite building material. The environment-friendly composite building material is wide in application range and good in economic and social benefits. When the environment-friendly composite building material is applied to the nonbearing wall of an energy-saving building, the performance of the environment-friendly composite building material is superior to the current national standard; and the friendliness of a natural environment and the recycling of resources are realized.

The method for preparing ecological active residues by treating electrolytic manganese residues by virtue of a rotary kiln plant mainly comprises the following steps: (1) preparing materials; (2) proportioning the materials; proportioning 50-75% of electrolytic manganese residues, 5-15% of stone coal, 19.7-50.0% of waste stone residues and 0.3-2.0% of an alteration agent by a microcomputer; (3) pulverizing: feeding the materials into a raw material vertical mill system to be mixed and pulverized; and (4) calcining: feeding the powder into a dry-method rotary kiln preheater system and feeding the powder into the rotary kiln to be calcined for 15-60 minutes at 1150-1350 DEG C to obtain the ecological active residues. By virtue of the method provided by the invention, active residues and active residue powder with relatively high additional value and wide use can be produced by effectively utilizing the electrolytic manganese residues and other wastes with a low cost.

The invention discloses a treatment system and process for high-temperature high-hardness high-COD sewage containing ammonia and nitrogen. The treatment system comprises a mechanical grating, an oil separation tank, a hardness-elimination device, an air floatation pool, a regulating pool, a cold water tower, a hydrolysis-acidification pool, a SBR biochemical reaction group, a buffer pool and a secondary sedimentation pool. Sewage successively flows through the mechanical grating, the oil separation tank, the hardness-elimination device, the air floatation pool, the regulating pool, the hydrolysis-acidification pool, the SBR biochemical reaction group and the secondary sedimentation pool, wherein the sewage from the regulating pool is pressurized by an elevator pump, then enters the cold water tower, and then flows back to the regulating pool via a water outlet formed in an anaerobic pre-reaction water tank. The treatment system and process provided by the invention can reduce water resource cost and sewage discharge for enterprises and improve overall economic benefits of the whole enterprises.

The invention discloses a manufacturing method of solid waste based cementing material concrete and a quantitative feeding device. According to the manufacturing method, a solid waste based cementingmaterial is adopted, and the solid waste based cementing material comprises the following raw materials: 30-60% of granulated blast furnace slag, 30-50% of steel slag, 10-20% of industrial by-productgypsum, 3-10% of fly ash and 3-10% of iron tailings, the preparation method comprises the following processing steps of stirring the solid waste-based cementing material, inspecting the solid waste-based cementing material, storing the solid waste-based cementing material, preparing premixed mortar and preparing concrete. The quantitative feeding device comprises a workbench, a quantitative feeding mechanism is arranged on the upper part of the workbench, a discharging mechanism is arranged below the quantitative feeding mechanism, and a material distributing mechanism is arranged below the discharging mechanism. The manufacturing method and the quantitative feeding device have the beneficial effects that the working efficiency is improved, and the product quality is guaranteed.

The invention relates to an absorption type integrative machine, comprising a high evaporation temperature cooling loop, a low evaporation temperature cooling loop and a heat retriever; the high evaporation temperature cooling loop comprises a generator, a condenser and a first evaporator and a solution heat exchanger; the generator is driven by external heat source, one end of the generator is connected with the condenser, another end is connected with the solution heat exchanger; the heat retriever is in series connection between the generator and the condenser. The absorption type cool-heat integrative machine of technical proposal of the invention, because including two respectively independently cooling loops, the high evaporation temperature cooling loop and the low evaporation temperature cooling loop with different evaporation temperatures, can efficiently use the remaining heat, the waste heat, the solar energy, the gas and the power energy as energy to cool, and at the same time of generating sanitary hot water, can provide refrigeration below zero DEG C, cool storage above zero DEG C and the air-conditioner refrigeration, thus improving the energy consumption efficiency at the same time of protecting the natural environment of earth.

An electric field treated heating device and the method for it is characterized in that the fluid in the area and the object for modification in the same area are respectively treated by electric fields. The electric field treating device and the method for it provide uniform electric field treating effect on the object for modification and regular electric field treating results can always obtained by them.

The invention discloses a steel structural rust conversion anti-rust paint used in building. The formulation is that rust conversion agent of polyatomic acid is 300-700 parts, gelling agent is 20-40 parts, atmospheric inhibitor is 1-2 parts, penetrating agent is 0.5-1 parts, organic silicon defoaming agent is 0.1-0.5 parts, and water is 256-678 parts. The steps of usage of the invention include that the components are sequentially added in a reaction tank, mixed and stirred for about 50 minutes under the temperature of 40-60 DEG C, and cooled and filtered to prepare the steel structural rust conversion anti-rust paint. The steel structural rust conversion anti-rust paint is directly brushed on the surface of steel products to remove greasy dirt, mud and sand, and dust which are on the surface of constructional steel structure. The steel products which are coated with the rust conversion anti-rust paint are placed in the air for 1-2 hours, and then are processed via oil paint construction. The rust conversion anti-rust paint has the advantages of thorough rust conversion, simple construction, economy and efficiency, energy-saving, environmental protection and the like, and is capable of strengthening the anti-rust and anti-fire property of the oil paint and increasing the inherent quality of the oil paint.

The present invention discloses a composite substrate comprising mushroom bran waste and used for culturing watermelon and muskmelon seedlings and a preparation method therefor, and relates to a watermelon and muskmelon seedling culturing substrate and a preparation method therefor. The substrate provided by the present invention aims to solve the technical problem that the production cost of the substrate is increased as the fermentation period is long when conventional mushroom bran is used as a seedling culturing substrate. The composite substrate comprising mushroom bran waste and used for culturing watermelon and muskmelon seedlings provided by the present invention is prepared from oyster mushroom residues, shiitake mushroom residues and soil. The method comprises: 1, mixing the stacked oyster mushroom residues and the stacked shiitake mushroom residues with the soil, adding water, and constructing a stack to perform stack fermentation; and 2, carrying out secondary stacking: when a center temperature is 40-55 DEG C, performing primary turning; when the center temperature is 60-80 DEG C, maintaining the temperature for a week; and when the temperature falls, performing secondary stacking until the temperature does not rise again to obtain the seedling culturing substrate. According to the composite substrate comprising mushroom bran waste and used for culturing watermelon and muskmelon seedlings and the preparation method therefor provided by the invention, the production cost is lowered, and excessive exploitation of peat resources is reduced. The composite substrate comprising mushroom bran waste and used for culturing watermelon and muskmelon seedlings and the preparation method therefor are applied to the field for preparing the watermelon and muskmelon seedling culturing substrate.

The invention discloses a phosphorus trichloride tail gas treatment process. Phosphorus trichloride tail gas is introduced into two sets of process routes to be treated. According to the first process route, the phosphorus trichloride tail gas is introduced into a water absorption tower, and unabsorbed tail gas is introduced into an alkali absorption tower; according to the second process route, the phosphorus trichloride tail gas is introduced into a reaction kettle, a mixture of absolute ethyl alcohol, ortho-dichlorobenzene and N,N-dimethylaniline is added into the reaction kettle, and unabsorbed tail gas is introduced into the alkali absorption tower. According to the phosphorus trichloride tail gas treatment process, a traditional process is optimized, the phosphorus trichloride tail gas is treated, byproducts of phosphorous acid and triethyl phosphite are obtained, the utilization rate of phosphorus trichloride of the phosphorus trichloride tail gas is increased, and the probability of discharging the phosphorus trichloride into the atmosphere is extremely decreased. By means of the phosphorus trichloride tail gas treatment process, the production benefit is guaranteed, and the natural environment is protected.

The disclosed RFID device for fridge comprises: a MPU (1), a LCD screen (2) to show the final inquired food information, a power management unit (3), a reader (4) to emit RF signal by its built-in antenna, a crystal oscillator (5), a keyboard (6), a reset circuit (7), a real-time clock (8), a buzzer (9), a label (10) to generate induced current when entering emission antenna working area and be activated to send information, and the system bus extension. This invention is benefit to food safety management.

The invention discloses bucket archconnecting piecesforan H-shaped steel building. The bucket archconnecting pieces are installed at the crossed position of a girder, a secondary beam and a column; the girder of the steel structure building, the secondary beam and the column adopts H-shaped steel, the bucket archconnecting pieces are of an integral forming structure, and the bucket archconnectingpieces are correspondingly installed above and below the crossed position.Each bucket archconnecting piece comprises a surface groove, a deep groove, two crossed groove profiles and a vertical squarepipe shape column groove, wherein the vertical square pipe shape column groove is located in the back surface of the crossed position of the two groove profiles; a plurality of horizontal fixing screwholes for connecting with the girder and the secondary beam are formed in the bottom of the two groove profiles; a horizontal rib is installed between the two crossed groove profiles, andthe surfacegroove protrudes outwards and is above the plane of the horizontal rib; the deep groove is sunken into the plane of the horizontal rib; and clamping grooves for being matched with the side edges of the surface groove are formed in the side edges of the deep groove. Vertical ribs are arranged between the four outer surfaces of the square pipe shape column groove and back surfaces of the groove profiles, and fixing hole positions for connecting the columns are formed in the four sides of the square pipe shape column groove.