37results about How to "Low running cost" patented technology

The invention discloses an advanced treatment and reuse method of a pre-coated membrane of tail water of a sewage plant. The method comprises the following steps: firstly, feeding tail water into an adjusting pool so as to be homogenized, and then passing through a sand filter; passing through an ultrafiltration membrane by a solution containing a pre-coated membrane material and sand filtered effluent and effectively forming a dynamic membrane on the surface of the ultrafiltration membrane, wherein concentrated water of the ultrafiltration membrane returns to the adjusting pool while the effluent enters into a middle water tank; backwashing the ultrafiltration membrane through a pump by part of water in the middle water tank periodically, wherein the pre-coated membrane automatically falls and the sediment of the coating material is recycled to a pre-coated membrane material dosing device repeatedly, so that the operating cost is lowered; entering into reverse osmosis membrane treatment by water in the middle water tank, fresh reverse osmosis membrane is used as industrial water in the park to be returned, and the concentrated water is treated by an electrochemical reactor, and the effluent reaches the standard to be discharged. By adopting the pre-coated membrane method, the ultrafiltration backwashing frequency is low, and the water yield of the ultrafiltration membrane is improved. Loose filter cake layers with great holes can be formed to effectively relieve the rate of descent of membrane flux, improve the anti-pollution capacity of the membrane and improve the removal effect of the membrane on the water quality index at the same time.

The invention discloses a purification treatment device for a diesel generating set. The purification treatment device for the diesel generating set comprises a water tank, a screen horizontally erected inside liquid of the water tank, an air-water separation board horizontally erected above the liquid face of the water tank, an exhaust pipe arranged on the upper surface of a tank body of the water tank and used for exhausting air in the water tank, and an air inlet pipe inserted into the liquid of the water tank. The air inlet pipe is communicated with a smoke exhaust pipe of the diesel generating set. By means of the structural design, after smoke released by a diesel engine is effectively cleaned and purified by the liquid in the water tank, the smoke is drained into the atmosphere, so that the tail smoke of the diesel engine is effectively purified. The purification treatment device for the diesel generating set is simple in structure, good in purification effect and low in operation cost.

The invention discloses a wastewater treatment process for printing and dyeing wastewater. Wastewater treatment can be carried out on wastewater with different concentrations, so that the wastewater is discharged up to the standard; and meanwhile, low-concentration wastewater can be recycled and water resources are fully utilized.

The invention discloses an air and electric energy two-stage heating and cooling system. The air and electric energy two-stage heating and cooling system comprises an energy tower, an energy tower heat pump unit, a heat storage water tank, a water source heat pump unit, a cooling tower, a load side and the like. In the heat supplying mode, the energy tower, the energy tower heat pump unit and the load side are connected through pipelines to form a closed circulation loop, and a first-grade heat supplying system is formed. The energy tower, the energy tower heat pump unit, the heat storage tank, the water source heat pump unit and the load side are connected in series through pipelines to form a closed circulation loop, and a second-stage heat supplying system is formed. In a cooling mode, the energy tower and the energy tower heat pump unit are connected with the cooling tower and the water source heat pump unit and the like in parallel through pipelines and enter the load side together, closed circulating loops are independently formed by the energy tower, the energy tower heat pump unit, the cooling tower and the water source heat pump unit, difficulties of application of air source heat pump and water source heat pump first-grade heat supplying system in the north are solved, running cost is saved, and commercialized large-scale promotion and application are realized. The invention further discloses an air and electric energy two-stage heating and cooling method.

The invention provides a vehicle driving path obtaining method and device and a computer readable storage medium. The vehicle driving path obtaining method comprises the steps of obtaining a startingpoint and an ending point of a vehicle; and according to the starting point and the ending point, obtaining a plurality of driving paths with continuous curvatures, and selecting a target driving pathof the vehicle in the driving paths. The target driving path is the curve with the continuous curvature, the curvature derivative has the upper bound, in the vehicle driving process, the vehicle speed can be kept continuous, a steering wheel does not need to be stopped and adjusted, the target driving path generated by adopting the vehicle driving path obtaining method does not need to be subjected to smooth optimization any more, and the track is more easily tracked by the vehicle.

The invention discloses a shared equipment dynamic coded lock system. The shared equipment dynamic coded lock system comprises a shared equipment dynamic coded lock, client equipment and a server; the shared equipment dynamic coded lock comprises a coded lock assembly and a coded lock unique identification make; the coded lock assembly comprises a processor, a real-time clock, a nonvolatile storage medium, a code input keyboard, a unlocking drive circuit, a locking system and a battery; a second encryption key is obtained by the server according to an equipment number, an encryption operation is carried out according to the second encryption key and the server clock to generate a lock code; the encryption operation which is similar to the server is carried out on the processor according to the first encryption key similar to the second secret key and the clock information to generate a dynamic code; the lock code and the dynamic code are compared, and then the unlocking operation is carried out on the shared equipment dynamic coded lock by depending on requirement. The shared equipment dynamic coded lock system has the advantages of low operation cost and random code.

The invention discloses an energy-saving air conditioning device, which comprises an indoor unit and an outdoor unit which are connected through a pipeline, wherein the indoor unit comprises at least one cooling back plate arranged at an air outlet side of a server rack, the outdoor unit consists of an air cooling heat exchanger and a chilled water heat exchanger which are connected in parallel, and air inlet ends of the air cooling heat exchanger and the chilled water heat exchanger are respectively provided with a solenoid valve. In the device, refrigerants and a thermosyphon principle are used so as to provide cooling for the server rack nearby, the heat dissipation problem of the server rack is solved, a natural cold source or a cold water machine set can be selected to use according to changes of weather, the energy consumption is greatly saved, and the operation cost is reduced.

The invention relates to equipment for integrally treating oil-water separation of kitchen garbage, composed of four parts as follows: an electronic display controller, a garbage material storage separator, an oil-water separation tank and an oil-water product recycling device. Safe and high-efficiency oil-water separation integrated treatment of the kitchen garbage is realized. Furthermore, resource and harmless treatments of the kitchen garbage are well realized. By means of the equipment disclosed by the invention, hogwash harm can be stopped at the source; and the shortage of resources inour country can be relieved.

The invention relates to a process for recycling sulfuric acid and methylamine in sulfuric acid and methylamine salt wastewater through a bipolar membrane electrodialysis method. The process comprises the steps: firstly, diluting a raw liquid by tap water supplement A, then carrying out first step diffusion dialysis in a diffusion dialysis device A, and directly reusing a received liquid A in a production line; diluting the residual liquid A through tap water supplement B, carrying out second step diffusion dialysis in a diffusion device B, carrying out evaporation and concentration A of a received liquid B to obtain a liquid, mixing the obtained liquid into the raw liquid, carrying out first step diffusion dialysis, allowing the residual liquid B to enter a bipolar membrane device, separating methylamine and sulfuric acid, and respectively concentrating and recycling. The process has the beneficial effects that the diffusion dialysis treatment process does not consume electric energy, the operation cost is low, high-economic-benefit sulfuric acid and methylamine in the wastewater are recycled, and the method has the advantages of economy and environmental protection.

The invention discloses a processing system and a construction method capable of improving the fineness modulus of natural sand. The advantage of high fine aggregate content of a natural river bed is fully utilized, and a vertical-axis impact crusher is selected to process small stones into artificial sand with high fineness modulus, so that the shortcomings of low natural sand content and low fineness modulus are compensated and overcome, the yield and production quality of the sand are improved, and the running cost of the whole system is also lowered. The system and the method are particularly applied to the working conditions of low fineness modulus, low natural sand content and high fine aggregate content of natural grits mined underwater.

The invention relates to an efficient and energy-saving electric heating warmer, which comprises a shell, a loop heating unit and a heating plate. A front cover plate with a decorative layer is mounted on the outer surface of the shell, a loop control unit with a fan cover outer layer is mounted in an inner cavity of the shell, a plurality of rows of condensers are arranged inside the loop control unit, the outside of the loop control unit is connected with the heating plate through an air duct, a liquid storage chamber and an evaporator are arranged on two sides of the heating plate respectively, and the liquid storage chamber and the evaporator are connected with each other through a liquid guide pipe to form a circulating pipeline. The efficient and energy-saving electric heating warmer has the advantages that a loop heat pipe is used as a conductor, heat is transferred by means of evaporation and condensation of media, a large amount of heat can be transferred under the conditions of small temperature difference and long distance, the heating area of the heating plate is enlarged, hot air among radiating fins is continuously delivered into air through an induced draft fan, heat energy is sufficiently used, and the problems of slow temperature rise, small heating area, high energy consumption and the like of most existing products are fundamentally solved.

The invention discloses a method for flue gas desulfurization of a lime rotary kiln by using kiln tail ash. According to the method, an atomized water sprayer, a spiral conveyor and two bag-type dustremovers connected in series are sequentially arranged in the kiln tail flue gas conveying pipeline of a lime rotary kiln from front to back; a scraping plate conveyor is arranged below the material outlet of the bag-type dust remover; kiln tail ash discharged from the material outlet of the bag-type dust remover is conveyed into a quick lime digester by the scraping plate conveyor; an atomized water sprayer is arranged on the quick lime digester; the kiln tail ash is added with atomized water, and then is digested into slaked lime; the slaked lime is conveyed into the a gas pipeline at the kiln tail through the spiral conveyor; the SO2 in the flue gas at the kiln tail reacts with a slaked lime absorbent uniformly mixed in humidifying circulating ash; the flue gas carrying a large number of dry solid particles after the reaction enters an after-desulfurization dust remover, and is collected and purified; and the purified flue gas passes through a chimney and then achieves discharge standard.

The invention relates to a lighting device capable of realizing wireless power supply. The lighting device consists of AC-DC (Alternating Current-Direct Current) power conversion modules, a wireless power supply transmitting module, a wireless power supply receiving module, a charging control module, a lithium battery, a power supply selector switch and four strings of 24 bars of LED (Light Emitting Diode) lamp arrays, wherein an input end of the wireless power supply transmitting module is connected to a first AC-DC power conversion module, and an output end of the wireless power supply transmitting module is used for transmitting a high-frequency field intensity signal generated through an electric induction coil into air; the high-frequency field intensity signal of the wireless power supply transmitting module is received by the wireless power supply receiving module and is converted into direct current voltage through a second AC-DC power conversion module; an input end of the lithium battery is connected to the second AC-DC power conversion module through the charging control module; an input end of the power supply selector switch is connected to the lithium battery and the second AC-DC power conversion module; and the four strings of 24 bars of LED (Light Emitting Diode) lamp arrays are connected to the lithium battery and the second AC-DC power conversion module through the power supply selector switch. The lighting device can be randomly moved as required, is low in operation cost and has a wide visible range.

A method for preparing methane from pineapple dregs or mango dregs through anaerobic fermentation is provided. The method includes (1) weighing biogas liquid of a biogas project adopting kitchen waste as a raw material, adding the pineapple dregs or mango dregs into the biogas liquid, with the solid-liquid mass ratio being controlled to be 6:100, and the ammonia nitrogen concentration being controlled to be about 2000 mg/L, adjusting a pH value with ammonia water to 8.5-9.0, and performing anaerobic fermentation at a maintained fermentation temperature of 35 DEG C for 60 days to obtain an inoculum; (2) subjecting the product of the step (1) to solid liquid separation to obtain a liquid supernatant and a precipitate, controlling the ammonia nitrogen concentration of the liquid supernatant to be 1500-3300 mg/L, blowing the precipitate with a small amount of the liquid supernatant to fully disperse the precipitate, and mixing the liquid supernatant the ammonia nitrogen concentration of which is adjusted and the dispersed precipitate; and (3) adding the pineapple dregs or mango dregs into the mixture with the TS% being controlled to be 1-4%, and performing fermentation. The method does not need independent acidification pretreatment, and can ensure successful biogas fermentation under conditions of enough volume loads and no increase of the volume of a fermentation tank. The method does not need a special additive.

The invention belongs to the technical field of sewage treatment, and particularly relates to a cold separation method for treating high-salinity wastewater. The method comprises the following steps:S1, feeding a stock solution into a crystallizing tank, cooling and crystallizing the stock solution to form a first ice crystal, and increasing the concentration of the stock solution to form a concentrated solution; and S2, discharging the first ice crystal from the crystallizing tank into an ice washing column, spraying by a spraying mechanism for purifying and decontamination and forming of asecond ice crystal, discharging the purified second ice crystal from the ice washing column, after discharging, converting the second ice crystal into pure water, and mixing spraying water with a residual concentrated solution on the second ice crystal to form a washing liquid. The cold precipitation method used for treating high-salinity wastewater is low in operation cost, and only consumes electric energy in wastewater treatment; energy consumption is low, and energy consumption of cooling concentration is far lower than that of an evaporation concentration method; zero emission can be realized, and new wastewater and waste gas are not generated in the wastewater treatment process; the system is reliable, the whole system operates at a low temperature, and the problems of corrosion, scaling and the like are avoided.

The invention discloses a method and a device for synchronously and efficiently removing nitrogen and phosphorus from low C/N domestic sewage by using an internal carbon source through a single-stage sequencing batch reactor, and belongs to the field of domestic sewage treatment. After domestic sewage enters the integrated short-cut nitrification endogenous short-cut denitrification phosphorus removal coupled anaerobic ammonia oxidation SBR reactor, an organic carbon source in the domestic sewage is converted into an internal carbon source in bacteria in a front anaerobic section, and the phosphorus release process is also completed; in the low-oxygen aeration stage, the phosphorus-accumulating bacteria absorb a part of phosphate in the sewage, and the ammonia-oxidizing bacteria oxidize ammonia nitrogen in a part of raw water into nitrite; and finally, in the anoxic section, part of nitrite and part of residual ammonia nitrogen generated in the aerobic section are converted into nitrogen by anaerobic ammonia oxidizing bacteria, the generated nitrate nitrogen is reduced into nitrite by denitrifying phosphorus-accumulating bacteria and denitrifying glycogen-accumulating bacteria, and the denitrifying phosphorus-accumulating bacteria further absorb phosphate. According to the method, the carbon source in the raw water is fully utilized to realize synchronous nitrogen and phosphorus removal of the low C/N domestic sewage, the ineffective loss of the carbon source is reduced, the energy consumption is reduced, and the sludge yield is relatively low.

The invention relates to a recovery method for tail gas generated during polycrystalline silicon production. The recovery method comprises the following steps: a cooling step: introducing low-temperature liquid into a heat exchange pipe with a double-layer pipeline in a barrel, and enabling the liquid to flow from the pipeline close to the outer wall of the heat exchange pipe to the pipeline at the axis of the heat exchange pipe so as to allow activated carbon in contact with the heat exchange pipe in the barrel to be in a low-temperature state; a purification step: introducing hydrogen tail gas into the barrel, enabling the hydrogen tail gas to pass through the activated carbon, and discharging purified hydrogen from the barrel; a heating step: introducing high-temperature liquid into the heat exchange pipe; and an activated carbon regeneration step: introducing the hydrogen tail gas into the barrel, enabling the hydrogen tail gas to pass through the activated carbon, and discharging the hydrogen tail gas carrying impurity components from the barrel. Through the above steps, the activated carbon can be recycled, and operation cost is reduced; and meanwhile, a device adopting the recovery method for tail gas generated during polycrystalline silicon production is good in heat exchange effect, the regeneration process of the activated carbon is short in time, and the purification effect of hydrogen is good.