44results about How to "Reduce engineering investment cost" patented technology

The invention relates to the technical field of cable-stayed bridges, in particular to a railway large-span cable-stayed bridge rigidity control method and a cable-stayed bridge. The railway large-span cable-stayed bridge rigidity control method disclosed by the invention can analyze effect laws of structural rigidity parameters of the cable-stayed bridge on three aspects of bridge dynamic property, vehicle dynamic response and bridge dynamic response by establishing a dynamic analysis model and utilizing a dynamic analysis method. Meanwhile, the control method utilizes a vehicle-bridge system evaluation index system as indexes to judge to obtain a rigidity limit value range and a design parameter value range of the railway large-span cable-stayed bridge, so that rigidity and design parameters of the designed railway large-span cable-stayed bridge are in the limit ranges, the rigidity is controlled, the large-span cable-stayed bridge can meet a requirement for use performance, an important effect for popularizing the railway large-span cable-stayed bridge is achieved, and enormous cost is saved.

The invention which belongs to the technical field of drinking water treatment especially relates to a method for reinforcing the coacervation algae removal and controlling the release of intracellular substances in the process of high algae water treatment. The invention which aims at the eutrophication pollution of surface water sources of lakes, reservoirs and the like provides a method for improving the algae cell removal effect of technologies of coagulation, deposition and filtration of a water work with the combined action of potassium permanganate and a ferric salt, wherein the appropriate oxidation effect of potassium permanganate inactivates and inhibits the activity of algae cells and controls the release of intracellular metabolites, and In situ MnO2 which is in situ generatedthrough a reduction reaction of potassium permanganate deposits on the surface of the algae cells to improve the settlement performance of the algae cells; and the electrical neutralization of the ferric salt allows the potential of the surface of the algae cells to be improved, and In situ Fe(OH)3 which is in situ generated through a hydrolysis reaction of the ferric salt deposits on the surfaceof the algae cells to improve the potential and the settlement performance of the surface of the algae cells. The method of the invention which is mainly applied to the purification in the drinking water work can also be applied to landscape water treatment which aims at the landscape water reuse and the water source pretreatment of the eutrophication water to inhibit the growth of the algae cells.

The invention relates to the technical field of cable-stayed bridges and in particular relates to a method of controlling rigidity of a long span cable-stayed bridge of a railway through a stay cable. The method analyzes influence rules of the cable-stayed bridge on bridge dynamic characteristic, vehicle dynamic response and bridge dynamic response under different numerical values by establishing a long span cable-stayed bridge model of the railway and a bridge model by means of a dynamic analytical method, and performs judgment by taking an evaluating index system of a vehicle-bridge system as an index to obtain influence conditions on the integral rigidity of the bridge under different rigidity numerical values so as to further obtain a reasonable value range of the rigidity of the stay cable, thereby providing basis for valuing and designing the rigidity of the stay cable; the integral rigidity of the long span cable-stayed bridge of the railway is better controlled through the rigidity of the stay cable, so that the long span cable-stayed bridge of the railway achieves a breakthrough on the rigidity control technology; the technical problem is solved, so that the long span cable-stayed bridge of the railway is promoted, and a lot of engineering investment cost is saved.

A method for building a fine grain tailing project property index estimation empirical formula based on multi-element stepwise regression includes the following steps: 1) collecting and settling fine grain tailing data physico-mechanical index sample data; 2) adopting the mu+ / -3sigma abnormal value rejection principle to conduct preliminary screening on the sample data; 3) conducting secondary screening on the sample data based on mathematical statistics; 4) building a multi-element stepwise regression mathematical model; 5) determining model parameters to obtain an optimal regression equation; 6) building the fine grain tailing project property index estimation empirical formula. The method has the advantages of providing forceful support for scientificity and reliability of a data regression analysis result through massive test data information, providing reliable parameter choice for fine grain tailing base stability evaluation and design in future, greatly saving project investment cost and soil engineering test investment, avoiding unnecessary project building cost, enabling a research result to have popularization and application value and being simple, practical, reliable in result, efficient in computing and the like.

The invention belongs to the technical field of drinking water treatment, and especially relates to an adsorption condensation method for removing natural organic matter in water by enhancing micro-interface adsorption. Based on coagulation technology, with the purposes of enhanced removal of natural organic matter and control of disinfection by-products, the invention provides a method for effectively removing natural organic matter in water by enhancing a micro-interface adsorption process and thus by the combined action of adsorption / condensation. The invention can effectively improve the removing effect of drinking water routine treatment processes on natural organic matter, and decrease the turbidity and oxygen consumption of settled water and filtered water. In addition, the invention can also improve the coagulation sedimentation effect on low turbidity water, low temperature water, low temperature low turbidity water, high organic pollution water, and decrease the turbidity and particle concentration of settled water. The invention is mainly applicable to purification in drinking water plants, and is also applicable to advanced treatment of secondary effluent in sewage plants with the purpose of reclaimed water reuse.

The invention discloses a distributed rural domestic waste recycling device and an application thereof. The device comprises a waste pretreatment system, a sewage anaerobic fermentation tank and a sewage secondary treatment tank, wherein the waste pretreatment system comprises a household garbage can, a stirring system, an organic garbage decomposition tank and an inorganic garbage storage tank. Compared with the prior art, the distributed rural domestic waste recycling device and the application thereof have the characteristics of wide adaptation to fermentation raw materials, less one-time investment, simplicity and convenience in operation, low operation and management cost, capability of recycling part of clean energy resources, and the like, so that the source reduction of the household garbage is realized, the household garbage reduction rate is over 40%, the collection and transportation cost of the household garbage is greatly lowered, the on-the-spot disposal and the reclamation of the domestic sewage are realized, too many pipelines are not needed to be laid, the needs of distributed rural domestic waste treatment, low investment and low maintenance cost are met, and the popularization and utilization value is very good.

The invention is a BIM-based forward design and operation and maintenance management system for foundation pit engineering. The system can generate a three-dimensional design model and check the model, and utilize BIM operation and maintenance management to guide construction through BIM forward design, so that the manager can clearly grasp the state of the facility, and maintain, update and eliminate the equipment in real time to avoid greater harm and loss. The system is equipped with a cloud and the BIM model can be lightened and uploaded to the cloud, so that multiple parties can participate in the maintenance of the facility, and the emergency processing can also be performed online, which greatly reduces the engineering investment cost.

The invention discloses a supersized wellhead platform, which comprises an upper module, a jacket and a plurality of steel pile foundations, wherein the upper end part of the jacket is connected with the upper module; the steel pile foundations penetrate through pile legs of the jacket; the upper module comprises an upper-layer deck, a lower-layer deck and a working deck, which are sequentially arranged from top to bottom; two well slot areas are arranged at an interval on the upper-layer deck. The wellhead platform also comprises a drilling module, an oil production module and an oil and gas metering module. According to the wellhead platform, large-sized oilfields with water depths of 10 to 40m and more than 50 well slots can be efficiently and rapidly developed with low construction investment cost by one wellhead platform; the project investment is greatly saved under the condition of ensuring the construction progress and safety, the well drilling and completion progress is accelerated to put the oilfield into operation as soon as possible, and the project benefits are remarkably improved; the wellhead platform has broad application prospect in the development of such oilfields.

The invention provides a mine draw shaft system. The draw shaft system comprises an input material conveying channel, a material sieving device, a first draw shaft and an output material conveying channel, wherein the input material conveying channel is connected with one end of the first draw shaft; the material sieving device is installed at one end of the first draw shaft; the other end of thefirst draw shaft is connected with one end of a second draw shaft, the first draw shaft is oblique, and the second draw shaft is straight; the output material conveying channel is formed in the lowerportion at the other end of the second draw shaft. In this way, the first draw shaft is oblique, and the second draw shaft is straight so that the length of a transverse drift roadway can be shortened, wherein the length of the transverse drift roadway is from an ore body to the other end of the second draw shaft. Therefore, the engineering investment cost is reduced.

The invention discloses an underground large-scale cave depot group network gallery type construction and ventilation method, comprising the following steps: establishing a ventilation model taking an existing vertical shaft as a fresh air inlet and taking a construction channel hole as a vitiated air exhausting hole; selecting types of draught fans needed by different cave sections according to ventilation distances of the cave sections, total required airflow of the cave sections, total ventilation resistance in the cave sections and motor power of axial flow draught fans; finally, blocking all the transverse construction channel holes, except the vitiated air exhausting holes, of the cave sections, so as to prevent air flow from short circuit. According to the method disclosed by the invention, a most suitable draught fan quantity and draught fan type are provided for the cave sections with the different ventilation distances and the existing vertical shaft is used as the fresh air inlet, so that the ventilation effect of cave depots can be improved, the consumption of energy sources is also reduced and the construction investment cost is reduced.

The invention relates to a heat state direct reduction iron furnace external cooling device and method. The device is composed of a self caching chamber, a distribution chamber, a cooling chamber and a discharging chamber; the distribution chamber is internally provided with a cylindrical barrel and a taper barrel, and three annular material channels are sequentially formed on the outer side of the cylindrical barrel; the bottoms of the cylindrical barrel and the taper barrel are connected with a cooling chamber shell and the tops of three annular separating plates in a one-to-one correspondence manner, the cooling chamber is divided by the three annular separating plates into an inner layer annular cooling space, a center annular cooling space and an outer layer annular cooling space in the radial direction; and a plurality of cooling walls are evenly arranged in the cooling chamber in the circumferential direction, and the annular separating plates and the cooling walls divide the cooling chamber into a plurality of cooling boxes with vertical material falling channels in the radial direction and the circumferential direction correspondingly. Centralization and enlargement of the direct reduction iron mixture furnace external cooling device are achieved, it can be guaranteed that the cooling effect of reduction iron mixture discharged after cooling is even and coincident, and meanwhile the function of storing direct reduction iron is achieved.

The invention belongs to the technical field of sewage treatment devices and in particular relates to an integrated membrane biological reaction system (MBR). The integrated membrane biological reaction system comprises an outer shell, an inner shell, a filtering system and a washing device, wherein the inner shell is arranged in the outer shell; a hollow part of the inner shell forms a first cavity; the first cavity is a membrane biochemical reaction tank; a second cavity is formed between the inner shell and the outer shell; the second cavity is a clean water tank; the filtering system is arranged on the inner shell; the inner shell is communicated with the outer shell through the filtering system; the filtering system is a stainless steel filtering screen; the washing device is arrangedin the first cavity; the washing device is used for washing the filtering system. The integrated membrane biological reaction system provided by the invention integrates a primary sedimentation tank,the biochemical reaction tank and a secondary sedimentation tank and a sewage treatment flow is simplified; the equipment has the advantages of investment saving, reliability in operation, simplicityin maintenance and low operation cost and troubles caused by membrane pollution and low pass in a traditional membrane bioreactor are completely solved; the integrated membrane biological reaction system brings a wider prospect for applying the MBR to middle-scale and small-scale sewage treatment.

The invention relates to a system for solving poor shunting of a track circuit by using axle counting equipment. The system solves the defect that the structure of an axle counting system at a rail turnout in the prior art is complex. The system for solving poor shunting of the track circuit by using the axle counting equipment comprises a first axle counting sensor, a second axle counting sensor, a third axle counting sensor, the axle counting equipment and an axle counting controller. The axle counting controller is used for enabling the axle counting equipment not to count when a train runs on a first through rail or a second trough rail, and enabling the axle counting equipment to count when the train runs on a turnout rail; and the same time, when the axle counting controller is in a disconnected state in which the axle counting controller does not count axles, erroneous judgment does not occur; and the realization method is simple and the construction workload is small.

An oil-water replacement process for crude oil storing and discharging of a single-column platform comprises the following steps: 1, filling water into an oil storing chamber and a water sedimentation chamber; 2, performing oil and water replacement in the oil storing process; 3, performing oil and water replacement in the oil discharging process; 4, controlling the oil-water level in the oil storing chamber, namely, controlling the oil-water level in the oil storing chamber to be between the maximum chamber capacity location and the minimum chamber capacity location so as to ensure that environmental pollution accident and unqualified output crude oil can be avoided during the oil storing and outputting process of the single-column platform; 5, continuously performing oil-water replacement process during oil storing and water draining and oil discharging and water feeding in the oil storing chamber within the oilfield production period, so as to achieve the function of storing and discharging crude oil by a self floating structure of the single-column platform. With the adoption of the oil-water replacement process, the investment cost of the oilfield development engineering can be greatly decreased; in addition, the oil storing chamber is full in the whole operation all the time, so that the influence of free liquid level on the structure and the stability of the floating structure can be reduced, and the pollution to the ocean environment can be avoided.

The invention provides a solar water pumping device which comprises a rack, a power storage and supply assembly, a photovoltaic panel assembly and a flexible shaft pump assembly. The solar water pumping device provided by the invention overcomes the defects of long power grid transmission distance, high investment cost of power supply equipment and the like, and achieves the purposes of taking solar photovoltaic power generation as water pumping energy and pumping water on site. When being used for irrigation, the solar water pumping device has positive significance for reducing the irrigation operation cost and the irrigation equipment engineering investment cost, and has more pertinence and practicability for irrigation of remote fields which are not suitable for large-scale irrigation equipment. The effect of supplying water to farmlands, pasturing fields, forests and grassland, farmhouses and courtyards without power supply of a power grid is achieved.

The invention provides a large-area deep soft foundation graded filling construction stability control method. The control method specifically comprises the following steps: selecting a representativeprofile in a stockpiling site to establish a calculation model, checking the overall stability of a stockpiling site foundation, and starting material stockpiling after the requirement is met; in thematerial stacking process, collecting monitoring data and calculating a designed settlement value Su; predicting a corresponding time TU; continuously collecting monitoring data and the monitoring settlement value at the TU moment; comparing a horizontal displacement monitoring value XU at a supercharge preloading edge with a horizontal displacement design value X at the supercharge preloading edge, carrying out next-stage stacking when the requirement that XU is less than or equal to X is met, and repeating the above steps until a designed maximum stacking height is reached when the next-stage stacking is carried out. According to the method, the design is checked by utilizing the soil property investigation reports and the measured data of each stage, and the information is fed back tothe construction in real time, so that the loading time can be effectively controlled, and safe, rapid and high-quality informationized graded construction guidance is realized.

The invention which belongs to the technical field of drinking water treatment especially relates to a method for reinforcing the coacervation algae removal and controlling the release of intracellular substances in the process of high algae water treatment. The invention which aims at the eutrophication pollution of surface water sources of lakes, reservoirs and the like provides a method for improving the algae cell removal effect of technologies of coagulation, deposition and filtration of a water work with the combined action of potassium permanganate and a ferric salt, wherein the appropriate oxidation effect of potassium permanganate inactivates and inhibits the activity of algae cells and controls the release of intracellular metabolites, and In situ MnO2 which is in situ generatedthrough a reduction reaction of potassium permanganate deposits on the surface of the algae cells to improve the settlement performance of the algae cells; and the electrical neutralization of the ferric salt allows the potential of the surface of the algae cells to be improved, and In situ Fe(OH)3 which is in situ generated through a hydrolysis reaction of the ferric salt deposits on the surfaceof the algae cells to improve the potential and the settlement performance of the surface of the algae cells. The method of the invention which is mainly applied to the purification in the drinking water work can also be applied to landscape water treatment which aims at the landscape water reuse and the water source pretreatment of the eutrophication water to inhibit the growth of the algae cells.

The invention belongs to the technical field of the treatment of recycled water, and particularly relates to an active coke modifying method and an application method for removing heavy metal in recycled water by using the modified active coke. The invention provides the active coke modifying method and the application method of the modified active coke, aiming at solving the problem that the membrane outlet water contains high heavy metal content in a recycled water factory adopting a membrane treatment technology. The implementation steps are as follows: pre-treating the active coke, preliminary oxidizing by chlorine and carrying out heat treatment, mixing and blending with high-oxidability acid according to proportion for sufficient time, and carrying out heating treatment to modify the active coke; feeding the modified active coke into a membrane pool to improve the hydrophilia, namely, the polarity on the surface of the active coke according to the content of the acid oxygen-containing functional group (carboxyl, phenolic hydroxyl group, ester group and the like) added on the surface of the modified active coke, so as to improve the adsorption removal effect of the heavy metal in the water. The active coke modifying method and the application method can be used for deeply purifying the two-stage outlet water of the urban sewage plant, and can be used for the recycled water treatment engineering which takes water discharged out of the urban sewage plant or the rain water as water source.

The invention relates to a novel high-medium-low-pressure wear-resisting double-gate-disc ash gate valve. The gate valve comprises a valve body, two valve seats, a valve deck, gate discs and a driving mechanism of the gate discs and is characterized in that each valve seat is in the shape of a flange, the two valve seats are connected to the inner ends of flow channels on the two sides of the valve body respectively, an O-shaped sealing ring is arranged between each valve seat and a valve body contact surface, annular grooves corresponding to the valve seat sealing surfaces are formed in the two side faces of each gate disc respectively, hard alloy is arranged in each annular groove through bead welding, an inner annular groove and an outer annular groove are formed in each valve seat sealing surface, hard alloy is arranged in each inner annular groove through bead welding or a ceramic ring is embedded in each inner annular groove, and each outer annular groove is filled with a soft sealing ring. The gate valve is reasonable in structural design, reliable in use, and capable of fundamentally solving the problems of an existing ash gate valve that wearing occurs easily, sealing performance is poor, service life is short, maintenance is not easy, and using cost is high, wearing resistance and sealing performance are improved remarkably, service life is prolonged, and maintenance is facilitated.

The invention provides an in-situ treatment and repair method for polluted bottom mud, and the method comprises the following steps: (1) contacting or mixing a repair agent with the polluted bottom mud; (2) standing for reaction for 2-5 days; (3) contacting or mixing an immobilized composite microbial material with the polluted bottom mud; (4) standing for reaction for 5-20 days; and (5) during the process of the steps (1) and (3), oxygenating the polluted bottom mud for 2-3 times, wherein each time of oxygenating takes 15-30 minutes, and the 2-3 times of oxygenating are performed at time intervals of 30-60 minutes. Compared with dredging and other engineering methods, the in-situ remediation method for treating the polluted river bottom mud has the advantages of low engineering investmentcost, no influence on the surrounding environment in the process of engineering implementation, and gradual improvement of river microbial and microecological structures, and has excellent effect andlow cost by comprehensive utilization of physical, physical chemical, microbial and other means for treatment.

The invention discloses an offshore jacket production platform. The offshore jacket production platform is a six-leg jacket production platform or an eight-leg jacket production platform. Jacket legs of the six-leg jacket production platform are arranged in two rows and three lines. The jacket legs of the eight-leg jacket production platform are arranged in two rows and four lines. Well slot areas are arranged among the jacket legs in adjacent lines, and a plurality of well slots are formed in the well slot areas. The offshore jacket production platform can meet well drilling requirement of more than forty well slots, the problem of jacket eccentricity is solved, and deck area of the offshore jacket production platform is saved, so that steel is saved, and engineering investment cost of the platform is reduced.

The invention discloses an integrated iron-based decontamination and resource reuse microbial fuel cell and a sewage treatment method. A negative electrode chamber of the cell is sleeved with a positive electrode chamber and internally provided with a negative electrode, a denitrifying biofilm adheres to the surface of the negative electrode, an electric wire is connected to the surface of the negative electrode, a negative chamber water inlet is formed in the lower portion of the negative chamber, a three-phase separator is arranged at the upper end of the negative electrode chamber, and a proton exchange membrane performing proton exchange with the positive electrode chamber is arranged on the side wall of the negative electrode chamber; a hollow cylindrical positive electrode chamber built-in baffle is fixedly arranged in the positive electrode chamber, and a liquid flow gap is formed between the outer surface of the positive electrode chamber built-in baffle and the inner surface of the positive electrode chamber; the positive electrode chamber built-in baffle sleeves the periphery of the negative electrode chamber and the three-phase separator; the positive electrode chamber is internally provided with an iron positive electrode, the positive electrode is arranged between the negative electrode chamber and the positive electrode chamber built-in baffler, and the electric wire is connected to the positive electrode. Accordingly, integration of the negative electrode and the positive electrode of the microbial fuel cell is achieved, the occupied area of the microbial fuel cell is reduced, and the project investment cost is lowered.

The invention relates to a gas-material-shared reversing valve for a double-hearth vertical kiln. The gas-material-shared reversing valve for the double-hearth vertical kiln comprises a valve body, abidirectional valve mechanism and a check valve mechanism, wherein a waste gas outlet is formed in one side of the top of the valve body, and a combustion-supporting air inlet is formed in the sidewall close to the water gas outlet, of the valve body; an inclined unloading port is formed in one side opposite to the combustion-supporting air inlet, of the valve body, and a discharge port is formedin the bottom of the valve body; the bidirectional valve mechanism is installed at one side close to the waste gas outlet and the combustion-supporting air inlet, and a bidirectional valve plate is capable of sealing the waste gas outlet or the combustion-supporting air inlet; and the check valve mechanism is installed at one side close to the unloading port, and capable of sealing the unloading port. According to the gas-material-shared reversing valve for the double-hearth vertical kiln, unloading and gas flow reversing of the double-hearth kiln can be completed by virtue of the charge portof a kiln body, and hole opening in a refractory material is not needed, so that the complexity degree of refractory material construction is reduced, the overall stress state of the refractory material is optimized, the service life of the refractory material is prolonged, and then the productivity of the double-hearth vertical kiln is increased.

The invention provides a water-based paint spray booth dry-type filtering device and a maintenance and replacement method thereof. The water-based paint spray booth dry- type filtering device and themaintenance and replacement method thereof are safe, low in cost and large in paint containing capacity, and particularly a carton filter is convenient to replace. A support is fixedly installed in apit. A first fluency strip is mounted on the support; the carton filter is arranged on the support and is placed above a first fluency strip; a second fluency strip is arranged in a placement area; alifting frame is vertically mounted in the pit; an electric hoist is mounted on the lifting frame; a framework is connected with the electric hoist; and a pulley is installed on the framework, and theframework is slidably connected with the lifting frame through the pulley in a lifting mode. When the carton filter is maintained and replaced, a carton replacing trolley is pushed to the front of the support, the saturated carton filter is pushed out of the support through the first fluency strip, and then the saturated carton filter is pushed into the carton replacing trolley through the secondfluency strip. The carton replacing trolley with the saturated carton filter is pushed into the framework, the electric hoist acts to enable a hanging basket to ascend, the carton replacing trolley is conveyed to the ground, and a new carton filter is returned through an original path.

The invention belongs to the technical field of the treatment of recycled water, in particular to an active coke modifying method for removing organisms in the recycled water and an application method of modified active coke, which aims at solving the problems that the content of organisms in the water discharged by a membrane in a recycled water factory adopting the membrane treatment process is high and the membrane pollution is severe, and provides a modification method and an application method of active coke. The method for modifying the active coke comprises the following steps of preprocessing the active coke, mixing the active coke with an alkaline solution according to a given ratio for sufficient time, and then heating the active coke to realize the modification of the active coke; and placing the modified active coke into a membrane pool. The oxygen-containing alkaline radicals and hydroxyl radicals added on the surface of the modified active coke are used for increasing the non-activity of the surface of the active coke, so that the effect for adsorbing and removing the organisms in the water can be improved. The active coke can be used for further purification of secondary water of an urban sewage plant and also can be used for the recycled water treatment project adopting the discharged water from urban sewage plant or rainy water as a water source.

The establishment of the power project cost database system includes analyzing and determining the key technical and economic indicators of power project investment control, and establishing a project cost data collection model; establishing a historical project cost experience database to provide reference data for reviewing project cost; intelligently selecting historical projects to realize historical Automatic comparison between projects and pending projects to improve review efficiency. The establishment of this database system is safe and reliable, with advanced technology, environmental protection, reasonable investment, unified standards, and efficient operation, and promotes the construction of power grids to better cooperate with social and economic development, avoiding the risk of investment waste becoming a bottleneck in economic development. On the other hand, under the premise of ensuring the safe and reliable operation of the power grid and the social demand for electricity, reasonably reduce the project investment cost, minimize the operating cost of the power grid enterprise, and realize the sustainable development of the company, thereby proposing safe, reliable and high-quality solutions for social development. , Low-cost electricity supply.

The invention discloses an emptying system for a high dam. The emptying system comprises a plurality of primary gate devices, secondary gate devices and an emptying gate device successively arranged along a flow direction of river water, wherein each primary gate device comprises an overhaul gate well and a working gate well arranged in parallel and a power device A and a power device B arranged on the top; each secondary gate device comprises an accident gate well and a power device C arranged on the top; the overhaul gate well, the working gate well and the accident gate well can be independently opened and closed; a water replenishing unit which is independently arranged on the exterior is used for replenishing the working gate in the second secondary gate device with water; the emptying gate device comprises an emptying lock chamber and an arc-shaped emptying gate. According to the technical scheme of the invention, pressure of upstream water head can be shared by the plurality ofprimary gate devices; reservoir water can be emptied by the emptying gate device; water pressure in the system is replenished by the water replenishing unit, so that flow rate of water can be kept stable, the gate devices can be prevented from bearing ultrahigh water head pressure and safety and stability of the whole system can be guaranteed.

The invention discloses a method and a system for producing hydrogen from landfill leachate, and belongs to the technical field of hydrogen production. The method comprises the steps that concentrated liquor produced in a reverse osmosis process flows into a catalytic ozonation process; clear brine generated in the ozone catalytic oxidation process is sent to the electro-adsorption process, strong brine generated in the electro-adsorption process is sent to the electrolysis process, and light brine generated in the electro-adsorption process is returned to the reverse osmosis process; light salt brine and chlorine flow out of the anode of the electrolysis process, and finished alkali and hydrogen flow out of the cathode of the electrolysis process; chlorine and hydrogen are respectively fed into the chlorine treatment process and the hydrogen treatment process to respectively generate finished chlorine and finished hydrogen which reach the standard, so that the purposes of preparing hydrogen for a fuel cell and co-producing a disinfectant by utilizing the landfill leachate membrane concentrated solution are achieved, and the problem of hydrogen waste generated by a traditional brine electrolysis technology is solved.

The invention relates to a system for solving poor shunting of a track circuit by using axle counting equipment. The system solves the defect that the structure of an axle counting system at a rail turnout in the prior art is complex. The system for solving poor shunting of the track circuit by using the axle counting equipment comprises a first axle counting sensor, a second axle counting sensor, a third axle counting sensor, the axle counting equipment and an axle counting controller. The axle counting controller is used for enabling the axle counting equipment not to count when a train runs on a first through rail or a second trough rail, and enabling the axle counting equipment to count when the train runs on a turnout rail; and the same time, when the axle counting controller is in a disconnected state in which the axle counting controller does not count axles, erroneous judgment does not occur; and the realization method is simple and the construction workload is small.