41results about How to "Secondary pollution meets" patented technology

The invention relates to a high-melt-strength anti-impact polypropylene foamed board. The foamed board is prepared through foaming with high-melt-strength anti-impact polypropylene as matrix resin. The high-melt-strength anti-impact polypropylene comprises a random copolymerization polypropylene continuous phase and a rubber dispersed phase of propylene-ethylene copolymer, wherein the content of room temperature dimethylbenzene soluble substances of the high-melt-strength anti-impact polypropylene is larger than 10 wt% and smaller than 35 wt%, and the ratio of Mw of room temperature trichlorobenzene soluble components to Mw of room temperature trichlorobenzene insoluble components is larger than 0.4 and smaller than 1. The invention further relates to a preparation method of the foamed material. The foamed material has higher melt strength, so foamed products with higher foaming ratio and better surface smoothness can be obtained, and the foamed material also has the characteristics of being high in rigidity, high in toughness and the like. Meanwhile, the foamed board has the advantages of being good in high-and-low-temperature anti-impact performance, high in physical heat resistance, high in percentage of close area, good in heat insulation and sound isolation performance, controllable in foaming ratio and foam pore structure and the like.

The invention provides a preparation method of polypropylene foamed beads. The preparation method comprises the steps of preparing polypropylene according to a following method, adding organic peroxides into obtained polypropylene serving as matrix resin, and foaming by virtue of a physical foaming agent, so as to obtain the polypropylene foamed beads, wherein the method of polypropylene comprises the step of carrying out propylene polymerization reaction including two or more stages in two or more reactors which are connected in series for operation, wherein external electron donors used in the two stages are respectively alkane compounds and diether compounds. According to the preparation method, high-melt-strength polypropylene with wide molecular weight distribution is taken as a raw material, the organic peroxides are taken as a surface modifier of EPP beads, and the closed-hole-structured polypropylene foamed beads having the advantages that the diameters of foamed holes are uniform, the foamed holes are compact and the hole distribution is uniform can be prepared; the polypropylene foamed beads can be applied to the fields such as automobile manufacturing, packaging, building insulation, sport equipment, living goods, aerospace and the like.

The invention relates to a device for removing heavy metals and polycyclic aromatic hydrocarbons in bottom sediment of river channels and a method thereof and belongs to the field of river-channel pollution treatment in environmental protection. The device comprises an electrolysis device, a biological fuel cell and a galvanometer, wherein the electrolysis device comprises a cathode area, a bottom-sediment area and an anode area; the negative electrode of the biological fuel cell is arranged at the outer side of a round drum, the positive electrode of the biological fuel cell is arranged at the inner side of the round drum, and a compost layer is arranged between the negative electrode and the positive electrode; a cathode rod is arranged in the cathode area, the top part of the cathode rod is electrically connected with the positive electrode, the negative electrode is connected with one end of the galvanometer, and the other end of the galvanometer is electrically connected with a positive rod; a substance exchange film is arranged between the anode area and the bottom-sediment area, a substance exchange film is also arranged between the bottom-sediment area and the cathode area, the top part of a cathode sampling area is provided with a cathode sampling port, the top part of a middle sampling area is provided with a middle sampling port, and the top part of an anode sampling area is provided with an anode sampling port. The device and the method have the advantages that the energy is saved and simultaneously the purpose of using wastes to treat wastes is achieved.

The invention discloses a preparation method of a phosphorus-free reverse osmosis scale inhibitor. The preparation method comprises the following steps: weighing a certain amount of maleic anhydride and putting maleic anhydride into a four-neck flask; adding a certain amount of ammonia water in proportion, starting a stirrer, and heating to evaporate water molecules and redundant ammonia molecules; raising the temperature to 120 DEG C, enabling the reaction solution to become turbid, adding a catalyst until the solution becomes light red and then becomes orange, and increasing the viscosity; heating to 150 DEG C, keeping the temperature for a period of time, and cooling to room temperature to obtain a brittle orange solid, namely polysuccinimide; suspending polysuccinimide in water, adding2-aminoethanesulfonic acid and sodium hydroxide, and stirring in an ice bath to obtain a sulfonic acid group-containing polyaspartic acid grafted copolymer; forming the reverse osmosis scale inhibitor by compounding a sulfonic acid group-containing polyaspartic acid graft copolymer, a scale inhibitor and a dispersing agent according to a certain ratio. The invention has the advantages that the membrane surface is prevented from scaling, the reverse osmosis membrane is prevented from being polluted and blocked, the components do not contain phosphorus, and the environment is not polluted.

The invention discloses an ecological and environment-friendly toilet treating device. The ecological and environment-friendly toilet treating device comprises a wastewater tank, an adjusting water tank, an anaerobic fluidized bed, an internal-circulating aerobiotic bioreactor, an ozone tower, an activated carbon adsorption tower, a lower clear-water tank and an upper clear-water tank. The wastewater treatment technologies such as the anaerobic fluidized bed treatment technology, the internal-circulating aerobiotic bioreactor treatment technology, the ozone treatment technology and the activated carbon purification treatment technology are integrated in the mode that the wastewater tank, the adjusting water tank, the anaerobic fluidized bed, the internal-circulating aerobiotic bioreactor, the ozone tower, the activated carbon adsorption tower, the lower clear-water tank and the upper clear-water tank are sequentially connected up and down, high-concentration wastewater is collected, a water body is subjected to anaerobic treatment, aerobiotic treatment, disinfected, sterilized and filtered, and colorless, tasteless and standard reclaimed water is formed and then returns for flushing a toilet; in the running process, water is saved, externally-discharged wastewater and externally-discharged sludge are avoided, a medicament does not need to be added, and secondary pollution is avoided; treated water is filtered and disinfected, the reusing requirements are met, the occupied area is small, and the integration level of the device is high.

A comb honey box with a honeycomb box body, which is used for producing, storing and selling natural and original ecological comb honey, is made of stainless steel plates and is characterized in that the honeycomb box body is hexagonal, no irregularly-shaped cell is arranged at the periphery of the box body; two honeycomb box covers have hexagonal frames and respectively cover the upper and the lower part of the honeycomb box body, so as to realize that a high-temperature sterilizing box body can be used and high-temperature wax sticking in the box body can be performed; when the comb honey box is in use, a plurality of comb honey boxes are combined together on the same bee movable frame so as to form an intact bee cell, and the thickness of the combining parts between box bodies is only 0.4-2 millimetres, which can be easily accepted by the bees; unsealed cells can not be left at the internal periphery of the box body, so as to avoid the problems that a honey-extractor is required to extract the honey, and secondary pollution is caused.

The invention relates to a catalyst with sulfur resistance and the function of catalyzing oxidation of NO and a preparing method and application of the catalyst. The catalyst with sulfur resistance and the function of catalyzing oxidation of NO is activated carbon modified by boric acid, wherein the mass content of boron is 0.01-2%. The catalyst is obtained by mixing an aqueous solution of the boric acid with activated carbon powder, conducting rotary evaporation, conducting calcining under a nitrogen atmosphere, and then conducting cooling. The preparing method is simple in technological process, easy to operate and low in cost, and mass production is facilitated; required raw materials are clean, environmentally friendly, and free of hazardous substances, do not cause secondary pollutionand conform to the idea of green chemistry; the prepared modified activated carbon has good sulfur resistance when used for NOCO, and the activity time is prolonged by 25-300% compared with that before modification.

The invention relates to the technical field of high polymer materials, in particular to a polypropylene composition, polypropylene resin granules, polypropylene foamed beads, a preparation method thereof and a polypropylene foamed bead forming body. According to the polypropylene composition, the composition is prepared from 100 parts of polypropylene, 0.1 to 0.3 part of antioxidant and 0.25 to 10 parts of mixed olefin-maleic anhydride copolymer microspheres, wherein the particle size of the mixed olefin-maleic anhydride copolymer microspheres is 0.4-3.9 [mu] m. The polypropylene foamed beadsprepared from the composition containing the mixed olefin-maleic anhydride copolymer microspheres have a more compact and uniform cell structure, uniform pore size, complete morphology, no rupture, relatively low density, relatively high compression strength and relatively good thermo-oxidative aging resistance. Besides, the foamed beads are of a non-crosslinked structure so that the foamed beadscan be recycled, secondary pollution is avoided, and the requirement of circular economy is met.

The invention discloses an impact-resistant polypropylene foaming material with high-melt strength. According to the invention, impact-resistant polypropylene with high-melt strength taken as matrix resin is obtained by foaming, The impact-resistant polypropylene with high-melt strength comprises a propylene homopolymer component and an ethylene/1-butylene copolymer component; wherein the propylene homopolymer component comprises at least a first propylene homopolymer and a second propylene homopolymer; the ethylene content in the ethylene/1-butylene copolymer is 20-45 wt%; the weight ratio of the ethylene/1-butylene copolymer component to the propylene homopolymer component is 11-80: 100; and the ratio of room-temperature trichlorobenzene soluble Mw of the material to room-temperature trichlorobenzene insoluble Mw of the material is greater than 0.5 and is smaller than or equal to 1. The invention also relates to a preparation method of the foaming material. The foaming material has the characteristics of good shock resistance at high and low temperature, high physical heat resistance, high closed porosity, good insulation and sound insulation performances, controllable foaming multiplying power and foam structure, and easy recovery and utilization.

The invention discloses a preparation method of corn stalk core regenerated cellulose immobilized nano-CuS/TiO2 composite aerogel. The preparation method comprises the following steps: shearing air-dried corn stalks for later use, carrying out cellulose extraction on a medullary core by using a malonic acid/hydrogen peroxide method, and dissolving the freeze-dried cellulose in a DMAc/LiCl system;dropwise adding an aqueous CuCl2 and Na2S solution into a TiO2 suspension, reacting, centrifuging, cleaning and drying to obtain CuS/TiO2 particle powder; and dispersing the CuS/TiO2 particle powder into DMAc, then adding the obtained dispersion into a glycerin-containing cellulose dissolved solution, uniformly mixing, dropwise adding blended cellulose into a template, regenerating in water, washing and freeze-drying to obtain the CuS/TiO2 loaded regenerated cellulose composite aerogel. The composite aerogel prepared by the method has the advantages of light weight, rich pore channels, reproducibility, wide photocatalytic response interval, high efficiency of catalytically degrading dye organic matters and the like, and has a good application prospect in the aspect of industrial dye wastewater degradation.

The invention discloses a step-by-step automatic cleaning device for plastic bowls, which is characterized in that it includes a plastic bowl conveyor belt (1), an automatic bowl-dividing mold setting mechanism (2), a limit baffle (3), and a cleaning water spray mechanism ( 4), drying mechanism (5), bowl pressing and fixing mechanism (6), bowl turning mechanism (7) and plastic bowl automatic filling and sealing machine stepping conveyor belt (8); each power mechanism is connected with the numerical control mechanism. The step-by-step automatic cleaning device for plastic bowls of the present invention has a reasonable structure, not only solves the problem of preventing secondary pollution, but also greatly improves production efficiency, and can meet the needs of automatic filling production.

The invention discloses a self-circulation type novel sludge degradation bioreactor and an operation method thereof. The bioreactor comprises a base seat, a crushing mechanism, a circulation mechanism, a reaction container and an aeration mechanism, wherein the crushing mechanism comprises a motor, a rotor, a stator and a fixing shaft sleeve; the motor is fixedly mounted on the base seat, and an output shaft of the motor is connected with the rotor through a coupling; the stator is adjustably mounted in the fixing shaft sleeve, and the rotor is rotatably mounted in the stator; a feeding port,a circulating liquid inlet and a liquid outlet are formed in the reaction container, and the liquid outlet of the reaction container is communicated with the liquid inlet of the fixing shaft sleeve; acirculation pipe of the circulation mechanism communicates the circulation liquid outlet of the fixing shaft sleeve with the circulation liquid inlet of the reaction container; the aeration mechanismcomprises an air source and an aeration pipe; and an air outlet of the air source is communicated with an air inlet of the aeration pipe, and the air outlet of the aeration pipe is led into the reaction container. The device can improve the degradation efficiency.

The invention relates to an organic sulfur conversion catalyst for liquefied gas and belongs to the technical field of liquefied gas refining. The organic sulfur conversion catalyst for liquefied gas disclosed by the invention comprises the following components in percentage by weight: 10-20 percent of Ni, 5-10 percent of Na2O and the balance of a carrier, wherein the carrier refers to gamma-Al2O3. According to the catalyst disclosed by the invention, the organic sulfur conversion rate in the liquefied gas is high, namely the thiol conversion rate is more than or equal to 95 percent, the carbonyl sulfide conversion rate is more than or equal to 98 percent, and the carbon disulfide conversion rate is more than or equal to 90 percent.

The invention relates to a splicing type clothes cleaning and drying machine which comprises a control host and a plurality of cleaning and drying machine bodies, and the cleaning and drying machine bodies are detachably spliced and fixed. Each cleaning and drying machine body comprises a machine body, a washing water system, a hot air system and a control auxiliary machine; the washing water system comprises a water inlet pump, a first heating device and a washing water nozzle; the hot air system comprises an air supply fan, an exhaust fan and a second heating device; the control host is electrically connected with the control auxiliary machine of each cleaning and drying machine body; the control auxiliary machine is electrically connected with the water inlet pump, the first heating device, the air supply fan, the exhaust fan and the second heating device and controls the water inlet pump, the first heating device, the air supply fan, the exhaust fan and the second heating device to be turned on or turned off. Clothes to be washed are hung in the inner container, high-temperature and high-pressure water flow generated by the washing water spray head is used for washing the clothes, the purpose of cleaning the clothes is achieved, the clothes are prevented from making contact with structural parts of the equipment, secondary pollution can be effectively avoided, and the use requirement of the equipment in public places is met.