1205results about How to "Guarantee continuous and stable operation" patented technology

An implant release mechanism for releasing, for example, a stent ( 60 ) is provided with three restraining wires ( 62 ) which pass in the space between a wire guide catheter ( 24 ) and a pusher sheath or dilator ( 30 ) and are arranged substantially equi-angularly threrearound. Each restraining wire ( 62 ) holds both the proximal and distal ends of the stent ( 60 ), in this case each holding a proportion of the ends of the stent ( 60 ). When the restraining wires ( 62 ) are pulled they will first unwrap from the proximal end of the stent ( 60 ) and will then release the distal end of the stent ( 60 ) so as to allow the stent to become fully deployed within the lumen of the patient. The use of common release wires improves deployment of implants and reduces the number and volume of components in the device, thereby allowing it to occupy a smaller volume.

The invention relates to a method for continuously producing epoxy chloropropane, comprising the following steps: leading 3-chloropropene, hydrogen peroxide and solvent in a plurality of fixed bed reactors filled with titanium silicalite catalyst; enabling the 3-chloropropene and the hydrogen peroxide to carry out epoxidation; and stopping epoxidation in at least one fixed bed reactor and regenerating the catalyst therein, wherein when regeneration is carried out in any one of the reactors, at least one reactor in the rest reactors is in epoxidation. The method provided by the invention has the advantages of simplifying the separation process of the catalyst and the reaction products, realizing long-period continuous and stable operation in the production process of epoxy chloropropane, reducing the loss caused by equipment downtime, and having simple technology process and convenient process realization.

In the event of a failure of a first electric motor drive signal generator, e.g., the microcomputer, which generates a first electric motor drive signal for performing a feedback control, a second electric motor drive signal generator, e.g., a PWM signal generator, which is made up of discrete circuit components, directly converts a steering torque signal into a second electric motor drive signal. An electric motor, which generates the assistive steering force, is driven by the second electric motor drive signal.

The invention relates to a method for treating high salinity wastewater. The invention uses treatment processes of alkali regulation and hardness removal, immersed microfiltration, neutralization and membrane distillation, aiming at the high salinity wastewater in petrifaction enterprises. The immersed microfiltration solves the problems of easy blocking, rapid flux decline rate and the like of a membrane; and the alkali regulation and hardness removal effectively removes the hardness in wastewater, reduces membrane pollution, improves the concentration multiple of the membrane distillation, lowers the load of evaporation and improves the processing effect and the operation stability of the membrane distillation. The method of the invention has wide applicability, simple device, convenient operation, stable operation and the like, and water produced by membrane distillation is good in water quality and can be directly reused for production.

The invention relates to a cleaning method of a reverse osmosis membrane. By aiming at reverse osmosis membrane elements polluted by polyacrylamide, chemical agents and cleaning devices are used for realizing various cleaning modes of continuous cleaning and intermittent cleaning, positive cleaning and opposite cleaning, acidic cleaning agent and alkaline cleaning agent alternate using, and the pure water forward osmosis flushing. The cleaning method has the characteristics that the cleaning agent preparation is simple, the cleaning operation process is easy to control, the cleaning condition is mild, the reverse osmosis membrane element is not damaged, the performance of the reverse osmosis membrane is efficiently recovered, and the like.

The invention discloses a frost-less air-source heat pump hot water unit and a proportional-integral-differential control method for the same. The proportional-integral-differential control method includes performing computation according to received air temperature and humidity parameters, received air pressure parameters and received surface temperature parameters of an evaporator when outdoor temperature parameters which are transmitted by a temperature and humidity sensor and are received by a computation controller are lower than 0 DEG C, controlling the opening of an electronic expansion valve according to a computation result and regulating the surface temperature of the evaporator by means of increasing or reducing the opening of the electronic expansion valve so that the surface temperature of the evaporator is constantly higher than a frost formation point; and enabling a silicon-controlled power regulator to judge a suction superheat degree of a compressor according to received suction temperature and suction pressure of the compressor, increasing or reducing the power of an electric heater and maintaining that the suction superheat degree of the compressor only varies within a set value range. The frost-less air-source heat pump hot water unit and the proportional-integral-differential control method have the advantage that adjustment for the opening of the electronic expansion valve is matched with adjustment for the power of the electronic heater, so that the purpose of maintaining safe and efficient running of a system is achieved.

The invention discloses an intelligent control module of a permanent magnet contactor, which mainly comprises a microprocessor, a rectifier and filter, an internal working power circuit, a rechargeable battery control circuit, a closing operation module, an opening operation module, an energy-storage capacitor voltage detection circuit, a control voltage detection circuit, a power off detection circuit, and a key-press setting and display control circuit; wherein, the closing operation module consists of a first MOSFET driving protection circuit and a first MOSFET; and the opening operation module consists of a second MOSFET driving protection circuit and a second MOSFET. The intelligent control module can set delay time parameters of transient interference electricity through key-presses according to requirements of a customer, realizes delay disconnection of the permanent magnet contactor and can ensure the stable and continuous operation of equipment through staying away from influences of interference electricity; and as for conditions of requiring urgent opening operation, the intelligent control module can immediately cut off the contactor through key-press control, so as to ensure the safety of the operating equipment.

A temperature-regulated cabinet (10) includes a cabinet body (1) and a temperature regulating module (2). The cabinet body (1) has a containing space (11) formed inside the cabinet body (1) and an opening (12) communicated with the containing space (11). The temperature regulating module (2) is detachably installed to the cabinet body (1) and covered onto the opening (12) and includes a temperature regulator (21), a first hood (22), a second hood (23) and an exhaust fan (24). The temperature regulator (21) has a casing (211). The first hood (22) is detachably installed to the top of the casing (211), and the second hood (23) is detachably installed to the bottom of the casing (211). The exhaust fan (24) is installed inside the first hood (22) or the second hood (23). The cabinet has the advantages of simplifying the production line and lowering the construction and operation costs.

The invention discloses a universal SOCKET communication and process management platform applied to multiple scenes and a method. The universal SOCKET communication and process management platform is applied to a SOCKET service scene and a resident process management scene; a SOCKET service is operated in the SOCKET service scene; and a background application in the form of a plug-in is operated in the resident process management scene. Each scene comprises the following processes: operating a base framework: creating a set of processes for realizing service logic processing and waiting and responding to a user operation instruction and a report of a diagnosis process; and operating the diagnosis process: detecting the operation states of the created processes, and automatically restarting a service process which is abnormally stopped or died, such that continuous and steady operation of the whole platform can be ensured. In combination with the SOCKET service scene and the resident process management scene, the SOCKET service in the asynchronous mode can be realized; due to two platforms including an asynchronous communication platform and a service processing platform, complete functions are realized; the asynchronous communication platform and the service processing platform exchange data with a SOCKET communication mechanism in a UNIX domain through a message queue; therefore, the processing capacity is flexibly expanded; and the transaction throughput is improved.

The invention discloses an optimal control method for a grinding process in a cement plant. By collecting grinding process signals and taking the advanced control as the core, the method realizes automatic control of material level and material level distribution, automatic control of circulating load and ventilation and also realizes optimization of material level of every bin in the mill, optimization of material velocity, optimization of circulating load and ventilation and also realizes output control of feed quantity, rotational speed of a powder-choosing machine and the rotational speed of a fan. The method optimizes the whole grinding process and realizes maximum time-production operation of the grinding process and minimum grinding unit consumption. At the same time, the failure of the grinding process is diagnosed, the safety of the grinding process is estimated, the grinding process is evaluated and analyzed, and the reasonable suggestion is given to the operation of the grinding process, thus assuring a continual, stable, safe and economical operation of the grinding process. The method can be widely used in the grinding process in the cement plant or in similar grinding processes in other fields.

The invention discloses a double-tower double-circulation limestone wet-method desulfurization device and method. The double-tower double-circulation limestone wet-method desulfurization device comprises a smoke purification part, an absorbent supply part, a slurry oxidization and crystallization part and a gypsum slurry dehydration part, wherein the smoke purification part consists of a first-stage circulation absorption tower and a second-stage circulation absorption tower; the absorbent supply part consists of a gypsum slurry tank, a gypsum slurry pump and a slurry supply pipeline; the slurry oxidization and crystallization part consists of a oxidization fan, a first-stage circulation absorption tower oxidization spraying gun, a second-stage circulation absorption tower oxidization spraying gun and an oxidization air pipeline; and the gypsum slurry dehydration part consists of a first-stage circulation gypsum discharging pump, a gypsum whirlcone and a vacuum dehydration belt conveyer. The desulfurization device is extremely high in desulfurization efficiency, and the aims of reducing the sulfur dioxide and purifying air are fulfilled; and moreover, gypsum with extremely high quality can be obtained.

The invention provides a logging-in management method and apparatus of a wireless router. The method comprises: a logging-in request of a wireless terminal is received and user name and password verification is carried out on the wireless terminal; if the verification is done successfully, a user attribute of the wireless terminal is determined according to an MAC address of the wireless terminal, wherein the user attribute includes a white list user, a grey list user, and a black list user; and if the user attribute of the wireless terminal is a white list user, the wireless terminal is allowed to log in the wireless router. With the method, the safe logging-in mechanism is enhanced; flexibility of safe logging-in management of the wireless rout4er is improved; and the cost of safe monitoring of the wireless router is reduced.

The invention belongs to the field of seawater desalination, and particularly relates to a marine heat pipe type seawater desalination device. The marine heat pipe type seawater desalination device is composed of a pressure gage, a liquidometer, heat pipes, a liquid distributor, a baffling plate, a snuffle valve, a cylinder body, a support, a one-way valve, a fresh water pump, a jet flow vacuum pump, a seawater pump, a partition plate, a demister and connecting pipelines. The marine heat pipe type seawater desalination device provided by the invention fully utilizes the advantage that the heat conductivity coefficient of a gravity heat pipe is high, adopts the heat of the cooling water of a ship engine as a heat source, and can greatly reduce the seawater boiling point under the vacuum environment created by the jet flow vacuum pump driven by a centrifugal pump; the seawater is distilled under the lower boiling point, thus the seawater desalination device provided by the invention has the advantages that the manufacture is simple, the structure is compact, the material consumption is less, the dual purposes that the cooling water of the ship engine is recycled and fresh water of a ship body is autarkical are achieved, the maintenance is convenient, the cost is low, the service life is long, and the installation space is small.

A sensor system for a machine tool with at least one sensor with at least one measurement instrument, which measures a physical quantity occurring within the machine tool, which is related to a machining process performed by the machine tool; with a first energy supply for supply of the at least one measurement instrument of the sensor, wherein the first energy supply receives electric energy from a surrounding electromagnetic field in a wireless way; and with a second energy supply for supplying the at least one measurement instrument of the sensor, wherein the second energy supply comprises at least one battery.

The invention relates to a movable integrated solar cold drink vending machine in the technical field of photoelectric refrigeration, which comprises a solar panel, a solar controller, a storage cell, a connecting box, a cold drink vending machine cabinet and a charger, wherein the solar panel and the cold drink vending machine cabinet form a shell with a sun shading cavity; the solar controller, the storage cell and the charger are arranged in the shell of the sun shading cavity; the solar controller is connected with the solar panel, the storage cell and the connecting box through wires respectively; and the storage cell is connected with the charger through the wire. The vending machine can move flexibly and freely, meets the requirements of occasions such as outdoor squares, exhibitions and the like, adopts solar energy as a main energy utilization form so as to achieve cleanness, environmental protection and capability of saving conventional electric energy, and realizes long-term continuous and stable running; and the sail-shaped solar panel can effectively prevent sunlight from irradiating the cold drink vending machine directly and enhance the heat-shielding performance of the cold drink vending machine, so the vending machine is suitable for outdoor use.

The invention relates to a device and a process for preparing struvite crystals from nitrogen and phosphorus in sewage. The device comprises a reactor (5), a pH (potential of Hydrogen) controller (25), a pH regulating pump (24), an alkali liquor tank (23), a nitrogen and phosphorus containing waste water tank (22) and a secondary sedimentation tank (19), wherein the reactor (5) is composed of a reactor feed pipe (9), a reactor crystal collecting pipe (8), a reactor growth tube (3) and a reactor sediment tube (2) from bottom to top. The process comprises the steps of pumping nitrogen and phosphorus containing wastewater into the reactor (5) and pumping a magnesium chloride solution into the reactor (5) to ensure that the molar ratio of NH3-N to PO43-P to Mg <2+> in the reactor (5) is (1:1:1)-(1:1:1.3); controlling the reflux ratio between 14 and 28 and the pH equal to 6.4-9.2; and forming the struvite crystals in the reactor (5) by using the nitrogen, phosphorus and magnesium containing solution. The device disclosed by the invention has the advantages of simple structure and small floor space, is simple and easy to operate and difficult to scale, can be widely applied to preparation of the struvite crystals from the nitrogen and phosphorus containing wastewater such as coking wastewater, pig manure wastewater or sludge fermentation liquor, and is capable of realizing the resource recycling of nitrogen and phosphorus.

The invention provides a film treatment method for wastewater produced by synthetic rubber treated by secondary biochemical treatment. The method adopts the treatment procedures of catalytic oxidation, coagulating sedimentation, ultrafiltration and reverse osmosis and comprises the following steps of: firstly, taking oxydol as an oxidant and ferrous sulfate as a catalyst, carrying out catalytic oxidation treatment on wastewater, removing COD which is difficult to degrade in the wastewater mainly, then removing iron and suspended substances by coagulating sedimentation, afterwards removing colloid and the residual particle substances by ultrafiltration and finally, carrying out desalting treatment by reverse osmosis. Because film pretreatment effectively removes organic substances which have larger influence on the running of a film system, the method has the characteristics of superior water quality of effluent water and long-time and stable running.

The invention discloses a main and a standby switching system of a session initiation protocol gateway and a corresponding method, which relates to the session initiation protocol gateway equipment in the network communication field, in particular to the main and the standby switching system and the accessible realization methods. The system comprises a mainboard (10) and a standby board (20) which respectively comprise a main network module and a standby network module (11,21), a main SIP protocol module and a standby SIP protocol module (12, 22), a main control module and a standby control module (13,23), and a main HA module and a standby HA module (14,24). Between the main board and the standby board (10,20), a card interface is used for achieving the physical link connectivity in the system, the main board and the standby board (10,20) has an independent IP address and an physical address and achieves the logic link connectivity through socket communication. The invention is applicable to the software synchronization of the gateway main and standby switching systems based on the SIP and also applicable to the software synchronization of the gateway main and standby switching systems based on the other non-SIP.

The invention discloses an optimized controlling method of the powder producing process of a middle-storage type steel ball coal mill, comprising two aspects: the noise of the coal mill is detected through a noise sensor for assisting coal dust humidity, coal dust temperature, coal dust fineness or a material level which can substitute signal for detecting coal mill thereof; an advanced controlling of a powder producing system is taken as a center for realizing the optimization of the controlling parameters and the controlling goals of a material level loop, an exit temperature loop and an air output loop, so as to realize the running safety evaluation and the malfunction diagnosis, to realize the running economic analysis and operation suggestions, thereby realizing the optimized running of the powder producing system. The invention realizes the whole optimization to the powder producing system, is different from the prior controlling proposal or plan which only resolves part of the controlling of the powder producing system, at the same time adopts the advanced controlling for ensuring the continues, stable, safe and economic running of the powder producing system, and is extensively applied to the powder producing process of a middle-storage type steel ball coal mill.

The invention provides an energy storage configuration method for output fluctuations of a smooth grid-connected wind-solar power generation system. The method includes the steps of firstly, obtaining power data P(n) output by the grid-connected wind-solar power generation system, and judging whether the maximum power fluctuation quantity of the power data P(n) and the maximum power fluctuation ratio of the power data P(n) meet the restraint condition of the grid-connected fluctuations of the grid-connected wind-solar power generation system or not; secondly, obtaining the frequency range [omega L, omega H] of the power data P(n) after the discrete fourier transformation is conducted on the power data P(n), and determining the compensation frequency omega c through the frequency testing method and the low-pass filtering; thirdly, determining an energy storage capacity EN and an energy storage initial charge state SOC0. Compared with the prior art, the energy storage configuration method for output the fluctuations of the smooth grid-connected wind-solar power generation system is reliable and easy to achieve, and effectively solves the problem of the grid-connected fluctuations of a renewable energy source power generation system.

The invention provides a system and a method for drying sludge through the waste heat of a gas turbine. The gas turbine is connected with a generator; a flue gas outlet of the gas turbine is communicated with a waste heat boiler; a steam outlet of the waste heat boiler is communicated with a steam turbine; the steam turbine is connected with the generator; a steam extraction pipe of the steam turbine is communicated with an inlet of a heated surface pipe of an internal thermal type fluidized bed dryer; an air outlet of an air heater is communicated with an air inlet of the internal thermal type fluidized bed dryer; wet sludge enters the internal thermal type fluidized bed dryer through a wet sludge pipe, flows outside the heated surface pipe, is dried and then is discharged into a dry sludge pipe from a discharging hole. Steam is produced through the flue gas waste heat of the gas turbine to push a steam turbine generator set to generate power, and the waste heat of the steam turbine is taken as a heat source for drying the sludge, so that gradient energy utilization is realized, the heat efficiency is high, and a peculiar smell is not discharged; the fluidization air of the fluidized bed dryer is preheated by hot water, so that the energy utilization rate is further improved, and the environmental problems of groundwater pollution and the like caused by sludge burying and soil utilization are effectively solved.

The invention relates to a method for treating and reusing high-temperature stripping purified wastewater produced in the process of transferring oxygenated compounds into olefins by using a high-temperature separation membrane. The combination process can effectively remove the impurities such as metal ions and organic micro-molecules and the like in stripping purified water, and the treated purified water in a tower kettle can meet the quality requirements of makeup water for middle and low-pressure boilers or the quality requirements of the makeup water in the MTO process. The invention effectively overcomes the defects exiting in the method for treating and reusing the stripping purified water without condensation in the MTO process, and lowers or reduces the consumption of circulating cooling water in the process of cooling firstly and then treating, thereby saving a large amount of boiler water and recycling the thermal energy of produced high temperature wastewater, and providing a stable and efficient way for high temperature wastewater treatment and reuse of relevant enterprises.

The invention belongs to the field of air conditioners, and relates to an air-conditioner outdoor unit hood with a defrosting structure, in particular to an air-conditioner outdoor unit capable of quickly defrosting. Due to more strong winds in winter, a large amount of heat is brought away by air flow, air-conditioner outdoor units are all mounted on the walls, temperature of one sides of the air-conditioner outdoor units are very low due to air current flow between the outdoor units and the walls, water is enabled to be frosted or frozen again by the strong winds when frost is molten into flow downwards along heat exchangers, consumed electrical energy is increased, and time for defrosting is prolonged. A steady-flow insulation cavity with the upper end closed is arranged on one side of a heat exchanger of an outdoor unit (1), transverse flow of air on two sides of the steady-flow insulation cavity is prevented through air blocking structures, and the rear side and / or the lower side of the steady-flow insulation cavity is provided with an opening serving as an air inlet of the outdoor unit (1). Hot air in a defrosting are is effectively prevented from escaping upwards by the steady-flow insulation cavity, air current flow is reduced, insulation effect is good, defrosting speed is increased, and heating effect and comfort of an air conditioner are improved.

The invention relates to a cigarette production method and an intelligent cigarette machine set thereof, comprising a data collecting, centralized control and management system which takes an industrial computer and a programmable logic controller (PLC) as a control core, an AC servo control and tracking system which takes a multi shaft servo controller as the control core, an independent AC servo driving system and an automatic stamp mark identifying and adjusting system which takes a DSP digital signal processor as a core, wherein, the input signal of the data collecting, centralized control and management system is a detection signal and is electrically connected with the multi shaft servo controller in the AC servo control and tracking system, meanwhile, the multi shaft servo controller is electrically connected with a servo controller in the independent AC servo driving system, thus realizing the driving of a servo motor in the independent AC servo driving system; the automatic stamp mark identifying and adjusting system receives the signals of a locating shaft encoder and a cigarette mark-detection sensor and outputs the signals to an independent strap servo driving system, thus finishing the relative position adjustment of the stamp mark and realizing the high-speed cigarette production with the real time dynamic adjusting of the stamp mark.

A device for preparing high-purity organic substance by fusion crystallizing method is a tower structure which is divided into upper cooling-crystallizing segment, middle separating-purifying segment and lower crystal fusing segment. Its tower body is inclined and is composed of casing consisting of intersected two cylinders, heater and parallel engaged two spiral stirrers.

The invention discloses a similar gear transmission travelling wave ultrasonic motor and a control method of the travelling wave ultrasonic motor. The travelling wave ultrasonic motor similar to the gear transmission comprises a first electric brush, a first copper ring, a motor output shaft, a shell, a rotor, a stator, a base, a second electric brush, a second copper ring, a base bearing, a pressure sensor, an elastic washer, a pre-tightening screw nut and a shell bearing. According to the travelling wave ultrasonic motor similar to the gear transmission disclosed by the invention, excitation signals are respectively applied on a stator and a rotor of the ultrasonic motor, two rows of travelling waves are excited in a metal elastic body of the stator and the rotor, and the wave crests and the wave troughs of the two rows of the waves are engaged with each other to form a similar gear transmission, so that the driving of mass points on the surfaces of the stator and the rotor are utilized fully, and the transmission efficiency is improved; and meanwhile, the electric brushes are adopted for supplying power to the rotor of the ultrasonic motor, and the durable and stable running of the ultrasonic motor is guaranteed effectively.

The invention relates to a smoke gas purification device by a semidry process, which is provided with an independent desuperheating tower, comprising a reaction tower provided with an smoke inlet box, a smoke gas outlet, a venturi tube type tower wall arranged on a tower bottom, a water injector arranged on the tower wall and a nozzle for lime dry powder and revert dust; and the smoke gas outlet is connected with an inertia separator, an activated carbon mixer, a bag-type dust remover and a draught fan. The invention is characterized in that the invention is also provided with the desuperheating tower which is provided with a boiler smoke gas inlet manifold, a single-stage water injector, an ash bucket with an ash hole and a gas flue; the gas flue of the desuperheating tower is connected with the smoke inlet box into one unit. The boiler smoke gas disperses within the two towers for cooling, thereby improving the adaptability of a system to a load; the boiler smoke gas particularly can be cooled down urgently to a set temperature in the desuperheating tower; and the reaction tower can be humidified only by evaporation with a little water to complete a deacidifying reaction and remove dioxin, thereby avoiding the disadvantages of scale formation on the tower wall of the prior reaction tower and bag burning of the bag-type dust remover, guaranteeing a sustaining and stable smoke purification process and having the advantages of good purification effect and low energy consumption.

The invention discloses a fully-automatic round-head barrel hook forming machine belonging to the field of wire bending machines. The fully-automatic round-head barrel hook forming machine comprises a steel wire feeding device, a handle tube feeding device, a forming device, a fetching and shaping device and a control system, wherein the handle tube feeding device is arranged in front of the forming device; the steel wire feeding device is arranged at the rear of the forming device; the fetching and shaping device is arranged in front of the forming device, is located below the handle tube feeding device and is composed of a grabbing mechanism, a locating mechanism and a shaping mechanism; and all the steel wire feeding device, the handle tube feeding device, the forming device and the fetching and shaping device are automatically controlled by the control system to sequentially finish the actions of handle tube feeding, steel wire feeding, barrel hook forming as well as fetching and shaping. By using the fully-automatic round-head barrel hook forming machine, a barrel hook not only can be fully-automatically produced, but also can be corrected and shaped after being formed to make preparation for the next installation of the barrel hook, so that the requirement of an automatic installation production line of the barrel hook is met, and the automatic level and production efficiency of vessels such as barrels and tanks are greatly increased.

The invention discloses a method for producing titanium tetrachloride by using a low grade titanium material, and belongs to the chemical technical field. The technical problem to be solved is to provide a method for producing titanium tetrachloride by using the low grade titanium material in continuous industrialized production. The method is characterized in that the low grade titanium material containing a certain proportion of titanium carbide is adopted to directly react with chlorine at the temperature of 600 DEG C to 700 DEG C to produce titanium tetrachloride. Long period continuous stable operation can be kept by using the technological parameters of the invention, and chlorination rate of titanium carbide in titanium material reaches above 90 percent, so that the titanium can be better used for producing titanium tetrachloride.

A treatment method of wastewater with high salinity and high organic matters comprises the following steps: 1) the wastewater goes into a Feton oxidation pond, the pH of the wastewater is adjusted to 2-3 by using an acid, and then H2O2 and Fe<2+> are added, a reaction is carried out for 60-80 min, and an alkali solution is added until the pH of the wastewater is 7-9; 2) the wastewater treated in the step 1) goes into a microfiltration membrane filter and is filtered; and 3) vacuum membrane distillation is carried out. The method is aimed at waste alkali liquid wet oxidized wastewater in an ethylene production and adopts the Feton oxidation pond and the microfiltration membrane filter, and the organic matter removal rate is above 90%, so the membrane pollution is reduced, the concentration multiple of the membrane distillation is increased, and continuous and stable operation of the membrane distillation can be achieved. Moreover, the wastewater treated by the membrane distillation system has no need of addition of an acid to adjust the pH, and thus the reagent cost is saved. The wastewater with high salinity and high organic matters is effectively reused, and the corrosion to equipment pipe fittings of a sewage treatment system is prevented.