87results about How to "Achieve environmental benefits" patented technology

The invention discloses a phosphogypsum composite pretreatment technique which comprises the following steps: directly taking phosphogypsum slag from a slag discharge port of a chemical industry enterprise, passing through a 30-mesh vibrating screen for separation, and meanwhile flushing the phosphogypsum slag with industrial wastewater of the chemical industry enterprise to remove hard mineral impurities; adding an alkaline calcium-increase liquid which accounts for 1-2 wt% of phosphogypsum into the phosphogypsum slurry obtained by flushing so as to regulate the pH value to 7+/-1, sending into a stratification filter tank, stirring, standing, and removing a surface layer organic substance film and soluble impurities; and sending the stratified and purified phosphogypsum slurry into a vacuum filter to carry out vacuum filtration, thereby obtaining filter residues and a filtrate. According to the technique, the phosphogypsum slag at the discharge port of the chemical industry enterprise is directly utilized to extract the high-purity low-impurity high-grade phosphogypsum, thereby saving the stock place and lowering the transportation cost; and the raw material is from three wastes and does not generate secondary pollution, the intermediate product hard mineral impurities can be directly used commercially, and water can be used circularly, thereby greatly enhancing the comprehensive utilization ratio of the phosphogypsum and implementing organic unification of environmental, economical and social benefits.

The invention discloses a tobacco mulching cultivation method. The nitrogen application rate is 52.5 kg/hm<2>, the ratio of basal fertilizer and top-dressing is 7:3, N:P2O5:K2O is equal to 1:1:3, the basal application materials include 3000 kg/hm<2> of decomposed sesame cake fertilizer, 60 kg/hm<2> of ammonium nitrate, 80 kg/hm<2> of phosphatic fertilizer, 191.4 kg/hm<2> of potassium sulfate, 37.5 kg/hm<2> of zinc sulfate, and 22.5 kg/hm<2> of boric acid, the topdressing materials in the rosette stage include 37 kg/hm<2> of potassium sulfate and 84 kg/hm<2> of potassium nitrate. In the process of transplanting, 15 kg/hm<2> of potassium nitrate is applied in a nest mode, a plastic film is covered, the plastic film is uncovered in the former half period of June, and 7500 kg/hm<2> of wheat straws are covered after earth up until harvest is finished. The tobacco mulching cultivation method is capable of keeping appropriate soil moisture and heat conditions in the growth period of tobacco, enables the tobacco to form a layering and well-developed frame-shaped root system, and is favorable for coordination of water, fertilizer, air and heat of soil.

The invention discloses a silty soil stratum pipe-jacking jacking construction method based on a tool pipe with a steel sleeve head. The method includes the steps that firstly, a work well is constructed, wherein the work well used for jacking a construction underground pipeline is constructed, the construction underground pipeline is formed by splicing a plurality of pipeline splicing joints, the tool pipe with the steel sleeve head comprises the steel sleeve pipe, a supporting ring installed on the inner side of the rear end of the steel sleeve pipe and an inserting port fixed to the supporting ring, the wall thickness of the steel sleeve pipe is 0.8-1.2 cm, and the length of the steel sleeve pipe is 80-120 cm; secondly, a jacking device is installed; thirdly, the tool pipe with the steel sleeve head is jacked, wherein the tool pipe with the steel sleeve head is hoisted in place, the tool pipe with the steel sleeve head is jacked, and a soil is manually excavated in the pipe; and fourthly, pipeline jacking is performed, wherein the pipeline splicing joints in the construction underground pipelines are jacked correspondingly from front to back. The method is simple in step, reasonable in design, easy and convenient to construct, good in using effect, capable of easily, conveniently and fast completing the silty soil stratum pipe-jacking jacking construction process and safe and reliable in construction process.

The invention provides cheap nutritional biological deodorization packing and a preparation method thereof. The deodorization packing is prepared from the following materials: coal ash, zeolite powder, lime, gypsum, cement, sodium hydroxide, sodium silicate, wood ash, bagasse ash and waste molasses. The packing is high in strength, high in breathability and stable in performance, has rich nutrition and can provide enough nutrient substances for microbes, so that the problems that organic carriers are low in strength and the like can be solved, and the problem that growth of deodorizing bacteria is influenced because inorganic packing is short of nutrition can be solved. The packing is long in service life, and the forming speed of a biological deodorization film is high. In addition, the nutritional biological deodorization packing prepared by the invention is low in cost and changes wastes into valuable materials, the pollution is reduced, and the environmental benefits, economical benefits and social benefits can be simultaneously realized.

The invention provides a novel process for abandoned mine downhole gas control. The novel process comprises the steps that (1) before an abandoned coal mine is closed, downhole branched roadways are blocked, and steel pipe holes are reserved in the upper portions of blocking walls to enable the interior to communicate with the exterior; (2) the reserved steel pipe holes of the multiple downhole branched roadway blocking walls are connected with a downhole gas pumping and discharging main system to conduct gas pumping and discharging; (3) blocked roadway drainage water communicates with main roadway drainage water, a water storage bin is built at a low downhole position, a water suction pump and a water pipe are mounted to pump and drain downhole gushing water to the ground, and the normal pumping and drainage effect of the downhole gushing water can be achieved after the coal mine is closed; (4) a main pithead and a vice pithead of the abandoned mine are closed, a footrill and an inclined shaft are filled with laying material rock walls and loess, steel pipes are embedded into the footrill and the inclined shaft, a main pithead and a vice pithead of a vertical shaft are blocked through reinforced concrete cover plates, and meanwhile, steel pipes are embedded into the main pithead and the vice pithead of the vertical shaft to enable the interiors of the pitheads to communicate with the exteriors of the pitheads; and (5) downhole gas is discharged and extracted through ground gas discharging and extraction equipment. The novel process can achieve the purposes of abandoned mine downhole gas comprehensive control and utilization.

The invention relates to a waste foundry sand dry-mixed mortar, belonging to the technical field of circular economy and building material mortar. The waste foundry sand dry-mixed mortar is characterized in that the production raw materials of the dry-mixed mortar are based on waste foundry sand with the following mass ratio: 11-31% of cement, 3-7% of dry coal ash, 0-5% of dry lime powder, 50-80% of dry waste foundry sand, 0-20% of yellow sand (with particle diameter between 2.36mm and 1.18mm), and 0.1-0.6% of water retaining agent (additionally added). The varieties of the dry-mixed mortar prepared according to the invention comprise various types of dry-mixed masonry mortar, dry-mixed plastering mortar, dry-mixed terrace mortar and the like which all meet the requirements of national standard GB/T25181 Ready Mixed Mortar. The waste foundry sand dry-mixed mortar is beneficial for the harmless treatment and resource utilization of the waste foundry sand, and opens up a brand-new resource regeneration way of the waste foundry sand.

The invention discloses an environmental-protection and multiple-effect powder composite and a production method thereof. The environmental-protection and multiple-effect powder composite is prepared by mixing cement, waste circuit board powder, resin, powder coating waste powder and mud volcano powder. The method for producing the environmental-protection and multiple-effect powder composite comprises the following steps of: recycling the waste circuit boards, removing the parts on the surface, cutting, crushing and separating to produce the waste circuit board powder; recycling the spraying waste powder generated in the powder coating operation to produce powder coating waste powder; recycling mud volcano slurry, crushing and drying to produce mud volcano powder; mixing the waste circuit board powder, the powder coating waste powder and the mud volcano powder together, adding the cement and resin, and uniformly mixing to obtain the environmental-protection and multiple-effect powder. The invention is widely applied to the places with the need of using environmental-protection and multiple-effect powder compositions and provides a good production method for producers.

The invention discloses a step-by-step method for controlling the total amount of air pollution. The method includes: performing basic reduction quantity calculation of pollution sources; calculating affirmative reduction quantity with a multi-source model method; performing optimal allocation of total amount controlled load. An A-P value method and the multi-source model method are integrated, an optimal allocation model is introduced, and a method system which is reasonable in technology and economically feasible is formed.

The invention discloses a method and a device for purifying bromine-extracting waste liquid. Waste salt sludge generated in the process of refining saline through a chemical process is selected and used for adjusting pH value of the bromine-extracting waste liquid, and turbidity of the bromine-extracting waste liquid is lowered through secondary coagulation process and air flotation process; the method and the device can be used for purifying high-acidity high-salinity bromine-extracting waste liquid, acid corrosiveness of the waste liquid is lowered remarkably, up-to-standard emission is realized, and no acidic pollution is caused to surrounding environment; various suspended matters can be removed effectively, the bromine-extracting waste liquid after being purified is quite clear, the turbidity is lowered remarkably, and 90% of ingredients like silicon and iron in the bromine-extracting waste liquid can be removed without changing original active composition in the same; through purifying treatment, quality of the bromine-extracting waste liquid is improved greatly, the method and the device can be directly used for salt drying in the sun, vacuum salt making and other process using saline, are low in purifying cost and simple in raw material obtaining way, realize treatment of waste by waste and have remarkable environment protection benefit.

The invention discloses an integrated heat supply system for flue gas source heat pump waste heat recovery, flue gas white smoke removal and off-peak electricity phase change energy storage gradient temperature rise, and relates to the field of boiler flue gas white smoke removal, heat energy recycling and phase change energy storage. The objective of the invention is to solve the problem that white smoke is formed at a chimney opening in wet smoke exhausted by a boiler, visual pollution is generated, haze weather is intensified, and existing fused salt heat storage technology cannot meet theindustrial production requirement. The smoke source heat pump and the sleeve tank phase change energy storage device are creatively combined to generate a good effect. The flue gas source heat pump ofthe system can achieve complete recycling of natural gas heat energy, and the phenomenon of white smoke emission is eliminated. The sleeve tank phase change energy storage device raises 60 DEG C hotwater generated by the flue gas source heat pump into 95 DEG C hot water and 120-180 DEG C steam through the off-peak electricity energy storage warming system and supplies the hot water and the steamback to the boiler heat supply system, and environmental benefits and energy-saving benefits of eliminating chimney white smoke, reducing boiler natural gas consumption and reducing energy consumption cost are achieved.

The invention relates to an asphalt mixture additive and a preparation method thereof. The asphalt mixture additive comprises the following components in parts by mass: 10-20 parts of a polymer, 5-10 parts of a cross linker, 10-20 parts of padding, 0.5-2 parts of a smog inhibitor, 1-2 parts of a plasticizer, 0.1-1 part of an antioxidant and 50-70 parts of matrix asphalt, wherein the matrix asphalt is one of Shell 70#, Shell 90#, SK70# or SK90#. Compared with the prior art, the asphalt mixture additive has the advantages that the anti-rutting performance and water damage resistance of an asphalt mixture can be significantly improved, the low-temperature cracking resistance and ageing resistance of asphalt concrete can be effectively improved, and the service life of asphalt roads is prolonged; meanwhile, the asphalt mixture additive can substitute about 15-25% of asphalt raw materials in the asphalt mixture, so that the production temperature is reduced to 140 DEG C, then the smoking phenomenon in the production and spreading processes is effectively reduced, and the asphalt mixture additive is energy-saving and environment-friendly; and the production method is simple, low in cost and suitable for industrialized production.

The invention discloses an aluminum passivating agent. According to the key points of the technical scheme, the aluminum passivating agent comprises the following raw materials in percentage by mass: 3-5wt% of fluorozirconic acid, 2-5wt% of fluorotitanic acid, 5-8wt% of silica sol, 1-2wt% of citric acid, 1-3wt% of tartaric acid, 2-3wt% of acetic acid, 4-5wt% of ammonia water and the balance of purified water. The invention aims at providing the aluminum passivating agent which is free of heavy metals and can effectively prevent dust from adhering on the surface of die-cast aluminum after a conversion film is formed.

The invention discloses a method for preparing an autoclaved fly ash brick through hydration with PO saponification waste residue, garbage power plant slag and coal-fired power plant fly ash. The method is characterized in comprising the following steps: (1) 100g of concrete is prepared into a building block with a size of 70mm*50mm*20mm; (2) garbage power plant slag is crushed; slag particles with sizes of 2-3mm are selected as an aggregate of the concrete; (3) water is added for dissolving additive auxiliary materials including an activating agent Na2SiO3, early strength agents Na2SO4 and triethanolamine, and a dispersing agent sodium rosinate; the PO saponification waste residue is added; the garbage power plant slag, PO42.5 cement and coal-fired power plant fly ash are sequentially added; the mixture is well mixed, such that a slurry is prepared; (4) the slurry obtained in the step (3) is fetched and pressed into building blocks; (5) the building blocks obtained in the step (4) are allowed to stand for curing for 24h; (6) the building blocks obtained in the step (5) are steamed in an autoclave reactor, wherein the temperature is controlled at 230-250 DEG C and autoclave is carried out for 5-9h; the material is discharged after natural cooling; and (7) compression strength tests and flexural strength tests are carried out. According to the invention, the above three solid waste resources are used or preparing the autoclaved fly ash bricks, such that waste is turned valuable.

The invention discloses a boiler wet flue gas condensing, water-collecting and fog-clearing system utilizing power station waste heat to refrigerate. The wet flue gas condensing, water-collecting andfog-clearing system comprises a plurality of boiler unit flue gas treatment systems, wherein one boiler unit flue gas treatment system is a main boiler unit flue gas treatment system, and comprises awaste heat generator, a dust collector, a desulfurization tower, an evaporator and a chimney which are sequentially connected, and further comprises a condenser and a heat absorber; the rest of the boiler unit flue gas treatment systems are secondary boiler unit flue gas treatment systems, and each secondary boiler unit flue gas treatment system comprises a waste heat exchanger, a dust collector,a desulfurization tower, an evaporator and a chimney which are sequentially connected. The boiler wet flue gas condensing, water-collecting and fog-clearing system achieves water-collecting and fog-clearing of flue gas of multiple units while realizing sufficient utilization of flue gas waste heat, and realizes certain water-saving earnings and environment-friendly benefits.

The invention discloses a heat preservation and decoration integrated ecological stone which comprises a facing layer, a middle layer and a heat preservation layer, wherein the middle layer is located between the facing layer and the heat preservation layer; the middle layer consists of an alkali-resistant fiber mesh fabric, a polymer cement mortar adhesive and a hot galvanized wire mesh; and circular grooves are formed in the heat preservation layer and U-shaped buckles are matched with the grooves. The heat preservation and decoration integrated ecological stone has the benefits as follows: the product integrates the heat preservation effect and the decoration effect; one-time forming can meet requirements of the heat preservation function and the decoration function, so that the artificial ecological stone not only has grain and line effects of natural stones but also can achieve the heat preservation function, and the construction cost and the construction procedures are greatly reduced; and in order to guarantee the fastness and the stability of a product when the product is stuck onto the wall, a traditional anchor sticking method is improved technologically, two cylindrical grooves and U-shaped stainless steel buckles passing through the cylindrical grooves are designed on a heat preservation material, and the construction safety is guaranteed.

The invention provides a winged insect trapping device. An arched cover body of an insect collecting unit is arranged on a base, an inlet is arranged on the peripheral side of the arched cover body, the upper end of the arched cover body is provided with a restraining contracted tube body, the arched cover body is in hollow communication with the restraining contracted tube body, the restraining contracted tube body upward extends to the upper portion to form a restraining contracted outlet, and a blocking piece is arranged on the outer side of the upper end of the arched cover body in a surrounding mode so as to form an insect collecting region between the blocking piece and the restraining contracted tube body. The winged insect trapping device is further provided with a light-transmitting cover for covering the restraining contracted tube body of the insect collecting unit, the insect collecting region and the position of the blocking piece. Therefore, an inductor capable of releasing acidic matter is arranged in the arched cover body of the insect collecting unit, the characteristic that mosquitoes, flies and other winged insects like the acidic matter and fly towards the light is utilized to absorb and enable the mosquitoes, the flies and other winged insects to fly into the arched cover body of the insect collecting unit, the mosquitoes, and then the flies and other winged insects fly towards the bright and closed light-transmitting cover and die off on their own in the light-transmitting cover under sun exposure due to food shortage, thereby achieving the actual effect of effectively catching and killing the mosquitoes, and then the flies and other winged insects.