76results about How to "Control secondary pollution" patented technology

The invention belongs to protective fishery field, which in detail relates to two-cycle water treating system for industrialized fish culturing, with main characteristics being: internal recycle pool structure of various shape taking square outside and round inside as representation, cultivating fish in circular pool, the quadrangle outside pool is biological filter; water and pollution discharging pipe are equipped in bottom of pool; the mating outside circular system comprises drainage ditch, out biological filter and artificial wet land, feed ditch, pollution collecting tank; special air raising pump of U shape, high effective aeration, water raising cycle; the artificial wet land and out biological filter are combined together, depositing, filtering, adsorption, bacteria degradation, adsorption by aquatic plant and animal and cleaning water body high effectively; constructing open water inlet and outlet pitch which also used as biological filter by using fish pond to realize omni-bearing restore of cultivating wastewater. The invention is characterized by less equipment investment, low energy consumption, safe and reliable operation, convenient management and maintenance, outstanding ecological, economical and social benefit, low production cost and increased quantity and quality.

A wet flue gas desulfurization and demercuration process and a system thereof based on two-stage oxidizing reaction. The process does two-stage oxidizing treatment to the simple substance HgO in flue gas utilizing to ultraviolet radiation and oxidant of halogen series, transmutes the gas phase divalent ion Hg2+ therein to liquid phase divalent ion Hg2+ using the modified limestone-gesso wet desulfurization process, and then transmutes the liquid phase divalent ion Hg2+ to the stable mercuric sulfide-HgS deposition via stabilizer of liquid phase divalent ion Hg2+. The system comprises desulfurization and demercuration equipments such as an ultraviolet irradiator, an electrical precipitator, an oxidant spraying unit and a reaction absorber etc, gesso treatment equipments of desulfurization byproduct, and a treating equipment for mercuric sulfide-HgS deposition. The process and the system thereof can raise the oxidation rate of simple substance Hg in the flue gas effectively, and at the same time effectively overcome the reduction release of divalent ion Hg2+ to avoid secondary pollution and be capable of raise desulfurization and demercuration efficiency of limestone-gesso wet desulfurization system.

The invention relates to a wet ammonia flue gas purification process for the combined sulfur and mercury removing and the system thereof. The process adopts chlorine gas as oxidizing agent to completely oxidize elemental mercury in the flue gas, and gas phase divalent mercuric ion after being oxidized is converted into liquid phase divalent mercuric ion through the improved wet ammonia desulphurization process, and further the liquid phase divalent mercuric ion is converted into stable mercuric sulfide sendimentation through liquid phase divalent mercuric ion stabilizing agent. The system comprises a flue gas oxidizing demercuration preprocessing system composed of an oxidizing agent injection device and an electrostatic precipitator, a wet ammonia flue gas sulfur and mercury removing system composed of a reaction absorbing tower, a sulfur removing accessory substance processing system composed of a cyclone cleaner, a dewaterer, and a dryer, and a mercuric sulfide HgS sendimentation processing system composed of a wastewater buffer pool, a liquid phase mercuric ion reaction chamber, and a settling pond. The process and the system can effectively improve the oxidation rate of the elemental mercury in the flue gas, overcome the defaults that the divalent mercuric ion is easy to be reduced and released and the secondary pollution problem is caused by excess oxidizing agent, and greatly improve the efficiency of sulfur removing and mercury removing.

The invention relates to composite-SBS (Styrene Butadiene Styrene block polymer)-particle asphalt modifier with storage stability and aging resistance and a preparation method thereof. The composite-SBS-particle asphalt modifier contains the ingredients in percentage by mass: 15-38% of SBS, 56-82% of deep-activated rubber powder and 3-6% of an interface compatibilizer, wherein the deep-activated rubber powder consists of rubber powder, softening oil and an activator. The method comprises the steps: preparing the deep-activated rubber powder from waste rubber powder by using the high-temperature and high-shear action of a twin-screw extruder; thoroughly mixing the SBS particles and the deep-activated rubber powder by using the blending action of screws, and granulating, thereby preparing the asphalt modifier. Compared with asphalt modified by ordinary SBS modifiers, asphalt prepared by using the composite-SBS-particle asphalt modifier disclosed by the invention has the advantages that the ageing resistance is excellent, and heat storage does not separate out basically. Waste/used tires can be massively consumed, so as to relieve black pollution. According to the asphalt modifier, urban noise pollution and road surface microstructure can be lowered, road surface drainage is facilitated, water splashing is reduced, and the safety performance of driving is improved.

The invention brings forward municipal refuse low-temperature oxygen-free carbonization system equipment. The municipal refuse low-temperature oxygen-free carbonization system equipment comprises a raw material preparation part, a low-temperature oxygen-free carbonization part, a resultant treatment part and a heat energy exchange part. The invention also provides a low-temperature oxygen-free carbonization revolving furnace for the municipal refuse low-temperature oxygen-free carbonization system equipment. The low-temperature oxygen-free carbonization revolving furnace comprises a feed part, a kettle body, a transmission mixer, an insulation tank, a flue gas outlet, a circulating heat conduction pipe, a discharging part, a supporting seat, a heating device, a temperature control device of the insulation tank, a temperature control device of the kettle body, and a transmission device. Through the municipal refuse low-temperature oxygen-free carbonization system equipment and the low-temperature oxygen-free carbonization revolving furnace therefor, it is prevented effectively that dioxin substances are produced in carbonization of refuse raw materials; authigenic energy sources can be recycled in carbonization of refuse; and a purpose of energy saving is realized effectively.

The invention relates to a bituminous mixture using a DVS (direct vat set) high-adhesion modifier and a preparation method thereof. The bituminous mixture is prepared from aggregates, a DVS high-adhesion bituminous mixture modifier and matrix asphalt by mixing, wherein the modifier is prepared from high-desulfurization-degree reclaimed rubber, modified high-temperature coal tar pitch and a skeleton proppant by stirring and extruding. Waste rubber is deeply activated under the high temperature and high shearing action of a twin screw extruder, so that the high-desulfurization-degree reclaimed rubber is obtained; then, the mixture of the modified high-temperature coal tar pitch modified by rubber pyrolysis oil, the high-desulfurization-degree reclaimed rubber and the skeleton proppant is fully mixed by using a screw, and then extruded and granulated so as to obtain the DVS high-adhesion bituminous mixture modifier; and finally, the modifier, the aggregates and the matrix asphalt are mixed so as to obtain a DVS high-adhesion bituminous mixture. The bituminous mixture disclosed by the invention has excellent water damage resistance, good high-temperature rutting resistance and low-temperature crack resistance.

The invention discloses biological algae control technology and application thereof in treating blue-green algae of the Lake Tai. The technology comprises the following steps: culturing oreochromis nilotica in a region with the blue-green algae, performing effective biological control on the blue-green algae in a water body, controlling overgrowth of the blue-green algae in the water body and inhibiting the explosion of cyanobacterial bloom by using the oreochromis nilotica to directly eat the blue-green algae, and effectively remove enriched nitrogen and phosphorus in the water body to achieve the aim of removing pollutant and purifying water quality by using the oreochromis nilotica to eat the blue-green algae. Through the technology, the explosion of blue-green high-risk region of local part of the Lake Tai can be effectively inhibited, and income increase of local fishermen and farmers is promoted. The technology and the application overcome the defects of the conventional physical, chemical and biological blue-green algae prevention and control, not only avoid pollution and biological risk, but also realize biological control on the blue-green algae.

The invention relates to a ship exhaust gas denitration urea automatic adding method and a device thereof. The ship exhaust gas denitration urea automatic adding device comprises a reactor (10), an SCR inlet exhaust gas flow meter (15) to which a controller (1) has access, a mixer (7), an electric heater (8), an SCR inlet nitrogen oxide analysis meter (13) and an SCR inlet temperature sensor (14) are arranged at an exhaust gas inlet pipeline of the reactor (10), compressed air (5) communicates with a spray gun (6) installed in the exhaust gas inlet pipeline through a compressed air pipeline, and the spray gun (6) is located in the mixer (7). The ship exhaust gas denitration urea automatic adding method and the ship exhaust gas denitration urea automatic adding device have the advantages that real-time changes of working conditions such as the exhaust gas temperature, the exhaust gas mass flow rate and the nitrogen oxide concentration of a marine diesel engine under different load conditions are taken into consideration, and effective control over secondary pollution caused by ammonia escape is realized.

The invention discloses a storage-stable and ageing-resistant composite SBS particle modified asphalt concrete and a preparation method thereof. The composite SBS particles comprise 15%-38% of SBS, 56%-82% of deep activation rubber powder, and 3%-6% of an interface compatibilizer, wherein the deep activation rubber powder consists of rubber powder, softening oil and an activating agent. According to the storage-stable and ageing-resistant composite SBS particle modified asphalt concrete and the preparation method thereof, waste rubber power is processed through a double-screw extruder under the high-temperature and high shearing condition to obtain the deep activation rubber powder; and besides, the blending effect of screw rods is utilized to fully mix SBS particles with the deep activation rubber powder to prepare the composite SBS particles through granulation, and the composite SBS particles are utilized to prepare modified asphalt concrete; Compared with a common SBS modifying agent, the composite SBS particle modified asphalt concrete is better in ageing resistance, and has no heat storage evolution; junked tires can be excessively consumed, the black pollution is reduced, city noise pollution is reduced, and the surface drainage is facilitated, water splattering is alleviated, and the traffic safety performance is improved through the pavement surface microscopic structure.

The invention provides a microwave gas cracking device, which is used for medical waste treatment. The microwave gas cracking device comprises a regulated power supply, a magnetron, an excitation chamber, an electromagnet, a high-stability signal source, a four-port circulator, a waveguide converter, a plasma generator, a gas flow regulator and an absorbing load, wherein the regulated power supply, the magnetron, the electromagnet and the excitation chamber form a microwave energy generator to provide microwave power needed for plasma generation; the high-stability signal source is used for providing stable 2450MHz microwave signals which are then injected into the magnetron through the four-port circulator, the oscillation frequency of the magnetron is controlled by the frequency of the injected signals, and the microwave energy is output to the plasma generator; the waveguide converter is arranged between a third port of the four-port circulator and the plasma generator and is used for converting the microwave energy output power; the gas flow regulator is connected with the plasma generator and is used for regulating the flow of gas entering the plasma generator; the magnetron is a magnetron with a low external quality factor.

The invention relates to composite-SBS (Styrene Butadiene Styrene block polymer)-particle modified asphalt with storage stability and aging resistance and a preparation method thereof. Composite SBS particles contain the ingredients in percentage by mass: 15-38% of SBS, 56-82% of deep-activated rubber powder and 3-6% of an interface compatibilizer, wherein the deep-activated rubber powder consists of rubber powder, softening oil and an activator. The method comprises the steps: preparing the deep-activated rubber powder from waste rubber powder by using the high-temperature and high-shear action of a twin-screw extruder; thoroughly mixing the SBS particles and the deep-activated rubber powder by using the blending action of screws, and granulating to prepare the composite SBS particles, thereby preparing the modified asphalt. Compared with modified asphalt modified by ordinary SBS modifiers, the composite-SBS-particle modified asphalt has the advantages that the ageing resistance is excellent, and heat storage does not separate out basically. Waste/used tires can be massively consumed, so as to relieve black pollution. According to the modified asphalt, urban noise pollution and road surface microstructure can be lowered, road surface drainage is facilitated, water splashing is reduced, and the safety performance of driving is improved.

The present invention relates to a domestic refuse landfill yard percolation liquor treatment method by utilizing vegetation system. Said method includes the following steps: firstly, constituting vegetation soil layer and irrigation water-conveying installation, then utilizing percolation liquor whose BOD5 mass volume concentration is less than 200 mg/L to make irrigation. Said invention also provides the concrete irrigation steps and measures. It is characterized by that it utilizes plant root system and microbial metabolism action in the soil layer to purify the percolation liquor. The removal rates of COD, ammonia nitrogen and total nitrogen are respectively up to 90%, 95% and 80%.

The invention relates to an organic solid rubbish combustion integration device and an organic solid rubbish combustion integration method. The organic solid rubbish combustion integration device is mainly composed of a combustion device, a variable heat exchanger, an area adjuster, a high temperature dust extraction device, a waste heat boiler and a power generation device. The organic solid rubbish combustion integration method includes the steps that organic solid rubbish is fed into the combustion device through a feeder, and simultaneously combustion agents are input into the bottom of the combustion device, high temperature flue gas generated after the rubbish fully burns is exhausted out from an outlet at the upper end of the combustion device, and then enters the variable heat exchanger, the variable heat exchanger is controlled through the area adjuster and used to adjust the heat exchange area between the high temperature flue gas and the variable heat exchanger, and then controls temperature of the high temperature flue gas which enters the high temperature dust extraction device, the high temperature flue gas enters the high temperature dust extraction device for purification treatment after the high temperature flue gas passes through the variable heat exchanger, and finally gas obtained after the high temperature flue gas is purified enters the waste heat boiler and used by the power generation device to generate power.

The invention discloses a treatment system and a treatment method for waste lead-acid batteries; the treatment system comprises a crushing device for crushing waste lead-acid batteries, a hydraulic sorting device which is arranged at the downstream position of the crushing device and is used for sorting battery scraps discharged by the crushing device to separate lead grids and obtain a plastic housing, lead paste and waste acid pickle, a conveying device which is arranged between the crushing device and the hydraulic sorting device, a bridge crossing sorting device which is arranged at the downstream position of the hydraulic sorting device to separate the plastic housing from the lead paste, a lead paste separating device arranged at the downstream position of the bridge crossing sorting device, and a plastic housing separating device arranged at the downstream position of the bridge crossing sorting device. According to the treatment system provided by the embodiment of the invention, the waste lead-acid batteries can be crushed and disassembled, and the thorough separation of the lead grid, the lead paste and the plastic housing is realized, so that the recovery rate for the secondary lead follow-up process is improved, the pollution is reduced, and the energy is saved.

The invention discloses an in-situ intensified aerobic stabilization method of a municipal solid waste landfill and belongs to environmental engineering. The municipal solid waste landfill is provided with a percolate collection vertical shaft and an air injection horizontal shaft in situ, so as to induce an intensified aerobic agent and fresh air; biomasses in scrap heaps are degraded in an aerobic environment rather than an anaerobic or quasi-anaerobic environment, so that wastes oxidation can be accelerated and the stabilization speed is increased; the percolate collection vertical shaft is arranged to pump out percolate in the scrap heaps and purifies the percolate to be used for preparing an intensified aerobic solution, so that a water resource can be circularly utilized and the content of pollutants in the scrap heaps can also be reduced; sealing and isolating measures including a wall, a vertical anti-seepage curtain and the like are arranged so as to control secondary pollution of the waste landfill in the intensified aerobic stabilization process; the in-situ intensified aerobic stabilization method disclosed by the invention can rapidly degrade the biomasses in the scrap heaps through intensified air and water cycle, has the characteristic of shortening the stabilization period of the waste landfill, and is suitable for biological repairing of the municipal solid waste landfill.

The invention discloses a method for treating arsenic pollution in underground water. Mature water body arsenic removal materials at home and abroad are subjected to water body arsenic removal effect comparison and mineral element analysis to screen out the stable and efficient PRB chemical material which is suitable for Chinese economy; and X diffraction, Fourier infrared spectrum, photoelectron spectrum and other modern instrumental analysis methods are combined to research the removal effects of rutile-form nano titanium dioxide and anatase-form nano titanium dioxide on arsenic in underground water, influence factors and arsenic removal mechanisms.FeCl3 is utilized to modify the rutile and remove arsenic in the water body; and the arsenic adsorption effect of the iron modified rutile, influence factors, regeneration experiments and simulated PRB experiments are researched to discuss the arsenic removal mechanisms of the iron modified rutile.

The invention discloses a high-purification automatic impurity-removing and tea-sterilizing process comprising the following steps: charging, fine processing, weighting and packaging. In the fine-processing step, tea is primarily screened by adopting a winnowing mode and residual impurities in the tea are removed by using a manual-selection mode; aroma-extracting and sterilizing working proceduresare set after the manual-selection step: tea moisture is removed, tea aroma is improved and bacteria in the tea are killed; far infrared rays are adopted to bake and heat the tea so as to greatly improve the tea quality; meanwhile, the far infrared rays have the thermal effect and the biological effect, and keep the activity of the tea and the nutrition and the luster of food to a maximum extent;and the automatic processing degree is high. The invention has the advantages of intelligently controlled technological process, compact connection, strong continuity, effectively controlled secondary pollution, little manpower consumption and high tea-making efficiency.

The invention discloses a high-temperature tail gas purification treatment system which comprises a tail gas condensation subsystem, a cold water preparation subsystem and a back flush subsystem. The tail gas condensation subsystem comprises a condensation main body with an air inlet and an air outlet, a cooling pipeline and a flushing device are arranged in the condensation main body, the cold water preparation subsystem is communicated with the cooling pipeline to supply cooling water, and the back flush subsystem is communicated with the condensation main body and the flushing device to collect condensation water generated in the tail gas condensation process and deliver filtered condensation water to the flushing device; that is to say, high-temperature tail gas firstly passes through the cooling pipeline to be condensed, dust and pollutants are separated out, the condensed wastewater can be collected and recycled by the back flush subsystem to be delivered to the flushing device after being filtered to be continuously recycled and reused, the temperature, humidity and dust and dirt content of treated tail gas are all obviously reduced, the subsequent treatment burden of the tail gas is reduced, the tail gas treatment efficiency is improved, and secondary pollution caused by the tail gas is effectively controlled.

The invention discloses a method for preparing an oxidation pellet with municipal sludge and ferruginous waste. The method is characterized by comprising the following raw materials in parts by mass 5-9 parts of municipal sludge, 90-92 parts of ferruginous waste and 1-3 parts of adhesive agent and comprising the following steps of: 1) mixing the weighed raw materials, 2) loading the mixed raw materials obtained in Step 1) into a disc granulator, and adding water to prepare a raw pellet, 3) drying the raw pellet prepared in Step 2) at 105 DEG C for 5h, and then preheating the raw pellet at 700-900 DEG C for 8-10min, and 4) roasting the preheated raw pellet obtained in Step 3) at 1200-1250 DEG C for 10-20min to form the oxidation pellet that is 15-20mm in particle size.

The invention belongs to the technical field of environmental protection, and relates to a method for dechlorination of ash by using garbage. The method comprises the following steps: firstly, respectively carrying out pretreatments for ash and garbage; then mixing the pretreated garbage and the pretreated ash according to a certain ratio; finally, carrying out regular water spraying for the resulting mixture. With the method provided by the present invention, the total chlorine content and the total heavy metal content in the ash are substantially reduced, such that the standard and the requirement of the resource utilization of the cement are met in a relatively short time. According to the present invention, the process is simple; the operation cost is low; disadvantages of large amount of water resource consuming and low removal efficiency of insoluble chlorine in the traditional washing process can be overcome; large consumptions of the non-renewable resources such as limestone and clays are reduced, efficient resource utilization of the fly ash from the garbage incineration is realized; the secondary pollution can be effectively controlled; greenhouse gas emission is reduced; the treated ash meets the national policies of energy saving and emission reduction, and sustainable development; an important theoretical and practical significance is provided.

The invention belongs to the technical field of disinfection, and particularly relates to a disinfectant with a composite medium-effect disinfection function. The disinfectant with the composite medium-effect disinfection function, provided by the invention, is prepared by taking a disinfectant, a nano antibacterial material, a stabilizer and a surfactant as main raw materials in a water system. The pH value of the disinfectant is 7-8.5, and the disinfectant comprises 0.5-1.7 parts of a surfactant, 2-12 parts of a disinfectant, 3-10 parts of a stabilizer, 4-10 parts of a nano antibacterial material and 80-100 parts of deionized water. According to the formula and the preparation process adopted by the invention, the stability of the sodium hypochlorite and the nano sol in the water-based disinfectant is improved. Under the action of the surfactant and the stabilizer, the use effect of the disinfectant can be greatly improved. During use, secondary pollution is small, and the problems of inflammability and explosiveness caused by volatilization of alcohol disinfectants in air are solved. The disinfectant can be used as a spray, a lotion and the like, and has a good disinfection effect.

The invention provides a box type domestic garbage recycling product classification system, which comprises a garbage bag breaking and material homogenization unit, a recognition sorting unit and a sensing sorting unit, wherein the garbage bag breaking and material homogenization unit comprises a garbage bag breaking machine and a material homogenization plate, the recognition sorting unit comprises an image recognition system, a control system and a robot, and the sensing sorting unit comprises a detection recognition system, a control system and a jetting valve group. According to the present invention, with the box type domestic garbage recycling product classification system, the highly-precise material classification recognition and detection can be achieved, the sorting and separation speed of classified garbage can be improved, the whole system has low requirements on the external environment, and no secondary pollution exists.