52results about How to "Implement hierarchical processing" patented technology

The invention discloses a combined cyclone separation / collection device and a method for separating and collecting pollen based on the device. The device comprises a cylindrical settling chamber and a double-cylinder cyclone. The cylindrical settling chamber is down communicated with an umbrella-type taker. The sidewalls of the top of the cylindrical settling chamber are communicated with the outer cylinder of the cyclone. An air duct is arranged outside the cylindrical settling chamber, and is communicated with the cylindrical settling chamber and the inner cylinder of the cyclone, respectively. Besides, the air duct is connected to an external variable frequency fan. A cylinder screen, a reflecting cone and a three-way air blowback pipe are arranged in the inner space of the cylindrical settling chamber. The rotating central shaft of the reflecting cone rotates through connection with an external variable speed motor. A stripper plate and a discharge chute are arranged on the bottom of the cylindrical settling chamber. Furthermore, a pollen collecting chamber is arranged on the bottom of the double-cylinder cyclone. The method comprises the following steps of: suctioning dust-containing pollen by means of an airflow, and filtering the dust-containing pollen; performing separation in the cylindrical settling chamber; and collecting the pollen in the cyclone, and purifying the dust-containing airflow for recycling. The device and the method of the invention are capable of effectively improving the pollen separation / extraction efficiency and preventing dispersion of pollen, and suitable for being popularized and used.

The embodiment of the invention discloses an alarm processing method and an alarm processing system for an Ethernet passive optical network. The method comprises the following steps: collecting the alarm information of OLT (optical line terminal) equipment and the alarm information of down network equipment of the OLT equipment from all OLT equipment in the EPON by utilizing an EPON integrated network management system; classifying the alarm information, collected by the EPON integrated network management system, according to the preset standard by utilizing an integrated alarm system, and sending the classified alarm information to a corresponding service scheduling subsystem; performing failure dispatching on the alarm information of the corresponding class by utilizing all the service scheduling subsystems so as to perform failure processing. According to the alarm processing method and the alarm processing system for the Ethernet passive optical network disclosed by the embodiment of the invention, unified monitoring and management of EPON equipment failures of all different manufacturers can be realized; the failures are discovered before a user discovers the EPON equipment failures; user perception is enhanced.

The invention relates to a material selection equipment for health food fungus processing, which includes a bottom plate, a box body and a screen. The first vibrating motor, the second vibrating motor and the third vibrating motor are evenly installed on the side of the box close to the dust delivery duct from top to bottom, and the first vibrating motor, the second vibrating motor and the third vibrating motor are connected to the The controller is electrically connected, and the output ends of the first vibration motor, the second vibration motor and the third vibration motor are all extended to the inside of the box, and are respectively fixedly connected with the first vibration frame, the second vibration frame and the third vibration frame, Screens are detachably installed inside the first vibrating frame, the second vibrating frame and the third vibrating frame. The present invention is provided with a detachable screen, so that it is convenient to replace the screen according to the screening needs, so as to meet the actual screening needs, and has good practicability.

The invention provides a message processing method and system based on bionic hierarchical communication. The method comprises the following steps that each node of a distributed system sends unclassified messages to a message receiver; the message receiver classifies the messages through a message classifier; different types of messages flow into different message distribution engines; the message distribution engines send the messages to a message processor through different processing interfaces; the message processor completes processing of the messages through a message processing plug-in; an engine resource consumption monitor monitors monitoring data of each message distribution engine and sends the monitoring data to an engine resource manager; and the engine resource manager dynamically computes resource quantity used by each engine according to the received monitoring data and the workload status of each engine. According to the method and the system, message classification is defined by a communication scene, so that unified message processing is realized; dynamic resource allocation is adopted, so that different attribute messages are guaranteed to obtain proper reliability and real-time performance respectively; and the message processing work is completed outside an application, so that the application development difficulty is reduced.

The invention discloses a kiwi detecting grading device. The kiwi detecting grading device comprises a first conveying belt and a detecting bracket, and is characterized in that a groove with an upward opening is formed in the detecting bracket; a first electric push rod is arranged in the groove; the free end of the first electric push rod is arranged upwards; the free end of the first electric push rod is fixedly connected with a supporting frame; the supporting frame is in an arc shape; a weighing device is arranged in the supporting frame; a mounting seat is fixedly arranged on the left side of the detecting bracket; a second electric telescopic rod is fixedly arranged on the mounting seat. The invention has the beneficial effects that a kiwi is conveyed to the supporting frame by utilizing the first conveying belt, is detected on the supporting frame, simultaneously is weighed by the weighing device and then is graded; when the kiwi is detected, the second electric push rod descends to drive a sensor to descend, and the sensor which comprises an optical fibre, a focusing lens, a light-transmitting protective film and an annular array ultrasonic sensor is tightly adhered to the surface, to be detected, of the kiwi with a suitable pressure from top to bottom.

The invention belongs to the technical field of computer application, and discloses a data grading request rendering method and system based on a CIM platform, and the method comprises the following steps: carrying out the grading expansion of two-dimensional and three-dimensional data models based on the related international standard of the CIM platform, and dividing the highest levels of data of the LOD level according to the fineness; according to the expanded two-dimensional and three-dimensional data model grading, defining data or models needing to be displayed in each grading section; determining storage modes of two-dimensional and three-dimensional data on each LOD level according to an optimal mode required by data display; and according to the requirement of a rendering scene, requesting data of a corresponding structure, and performing rendering display by responding to a data loading request in a grading manner. According to the method and system, data storage is carried out on the hybrid model under the corresponding level through level-to-level management of data of different dimensions, fused data is read from different data storage under different scales, and an efficient storage format is provided for multi-source data rendering.

The invention discloses a remote measurement data interpretation system based on K-means, and the method comprises the steps: classifying change rules of parameters into four classes through sorting the characteristics of remote measurement parameters of a small satellite; setting the number of K-means models needed by the remote measurement parameters of the small satellite, a processing mode of the remote measurement data and a parameter mode according to the mapping tables between the change rules of the remote measurement parameters and related instructions or states; training a K-means mode parameter corresponding to the remote measurement parameters through employing normal data, and packaging the K-means models which complete the training into a set; enabling the system to obtain real-time measurement data of the satellite and a remote control instruction from a main testing computer and a database after the modeling is completed; carrying out interpretation through the models corresponding to the remote measurement parameters, and giving out an abnormal point and an early-warning point of the parameters; enabling a tester to carrying out the confirmation of interpretation results according to the abnormal point and early-warning point given by the models, inputting a leaked point appearing in an operation process of the satellite into the models, and achieving the dynamic correction of the models.

The invention discloses a fish tank comprising the side walls and a bottom plate. At least one side edge of the bottom plate is provided with a drainage structure. The drainage structure is provided with a long strip chamber, an inlet and an outlet which are communicated to the chamber of the drainage structure, wherein the inlet is formed from a plurality of inlet opening in interval arrangement. The outlet on the drainage connected to a blow-down valve is linked with or connected to a water filtration system, wherein after the filtration treatment implemented through the water filtration system to the water output from the drainage structure outlet, the water is sent back to the fish tank. In the invention, a special drainage structure is arranged on the fish tank bottom plate, so that the fish feces, rotten leaves and other impurities inside the fish tank can be effectively discharged under the water flow action, thereby the water cleaning conditions are created. After the arrangement of the corresponding water treatment system, the water stage treatment is achieved. The effective removal of the impurities in water is ensured, at the same time the operation burden of the filtration device in the system is reduced. Moreover the fish tank can be operated in a variety of work mode.

The invention discloses a terminal and a method executed by the terminal and used for connecting a domain server, a method for processing a terminal event and a terminal control system. The method executed by the terminal comprises the following steps: acquiring self position information, judging whether the terminal is in a service range of a previously connected domain server; sending a request message to a center server under the condition that the terminal is not in the service range, wherein the request message requires for reallocating the domain server for the terminal, and comprises the position information; receiving connection information about one or more domain servers in response to the request message from the center server, wherein the service range of one or more domain servers covers a terminal position appointed by the position information; and connecting with one in one or more domain servers according to the connection information. Therefore, the data volume in the domain server can be reduced, the network congestion can be avoided, and the network load balance is realized.

The invention relates to a garlic sectioning and grading mechanized device and a control method thereof. The garlic sectioning and grading mechanized device comprises a bottom disc, a sectioning device and a grading device, the sectioning device and the grading device are mounted on the bottom disc, the sectioning device comprises an outer box body, two upper rubber rollers rotatably connected into the outer box body and a sectioning driving device for driving the two upper rubber rollers to rotate in the opposite directions, rubber side plates are mounted between side plates of the outer boxbody and the upper rubber rollers, a feeding opening is formed in the top of the outer box body, the feeding opening is fixedly provided with a flow dividing plate extending to the two upper rubber rollers, the grading device comprises a vibration rack connected with the bottom disc through a spring and multiple stages of screen nets mounted on the vibration rack, the discharging ends of the screen nets are provided with collecting pipes, garlic collecting, transporting, sectioning, impurity removing and grading are finished at one time, multiple operation flows are integrated, operation and mobility are high, due to intensification design, the space and the size occupied by the device can be greatly reduced, and the current needs of a peasant can be met.

The invention discloses a forest-fruit branch extruding, slicing and smashing machine comprising a shell. A first-stage roll shaft set where the roll-in clearance is set is arranged in the shell. Sharp spines are arranged in the circumferential direction of roll shafts of the first-stage roll shaft set. A drive assembly driving the first-stage roll shaft set to work is connected to the first-stageroll shaft set. A feed passageway is arranged at the upper end of the portion, on one side of the first-stage roll shaft set, of the shell, and a discharge port is arranged at the lower end of the portion, on the other side of the first-stage roll shaft set, of the shell. A feeding guide plate facing the roll-in clearance and a discharging guide plate facing the roll-in clearance are arranged inside the feed passageway and inside the discharge port correspondingly. A cutter is further arranged in the shell. The discharging guide plate is arranged between the cutter and the first roll shaft set. The feed passageway is provided with a conveyor belt. A cutting knife, a material thumbing assembly and a feed roll shaft are sequentially arranged above the conveyor belt from an inlet of the feedpassageway to an outlet of the feed passageway, the cutting knife is used for cutting off fruit branch bundling belts, the material thumbing assembly is used for dispersing fruit branches, and sharpspines are arranged in the circumferential direction of the feed roll shaft. By means of the forest-fruit branch extruding, slicing and smashing machine, uniform slicing can be conducted on the branches, and branch slicing and smashing uniformity is ensured.

The present invention discloses a method and an apparatus for flue gas desulfurization and sulfuric acid production. The method comprises that (1) flue gas is subjected to heat exchange through a sulfuric acid storage tank, and then the obtained flue gas enters a dust removing quenching tower and is subjected to primary dust removing cooling; (2) the cooled flue gas enters a desulfurization tower and sequentially passes through a deep dust removing unit, a desulfurization unit and a water washing unit from bottom to top; (3) in the water washing unit, the SOx in the flue gas is absorbed with fresh water, the liquid phase overflows and sequentially passes through the desulfurization unit and the deep dust removing unit, the obtained liquid phase enters the dust removing quenching tower to obtain a rich absorption liquid, solid-liquid separation is performed, and the gas phase is discharged in atmosphere after defogging; and (4) the rich absorption liquid being subjected to solid waste separation is discharged into an oxidation tank, the liquid phase enters a regeneration tower, the Fe<3+> / Fe<2+> in the liquid phase is removed, and the obtained liquid phase enters the sulfuric acid storage tank in the form of dilute sulfuric acid. With the method and the apparatus of the present invention, the SO2 in the flue gas can be absorbed and concentrated, and can be oxidized into the sulfuric acid so as to produce the high concentration sulfuric acid, the purified flue gas can meet the national or local relevant standard requirements, and the method and the apparatus are suitable for the recovery treatment of flue gas containing various concentrations of sulfur dioxide.

The invention discloses construction waste graded crushing equipment, and relates to the technical field of construction waste treatment equipment. The construction waste graded crushing equipment is technically characterized by comprising a box body provided with a feeding port, a crushing cavity is formed in the lower end of the feeding port, a driving device for driving a crushing plate to preliminarily crush broken stones is arranged in the crushing cavity, the rotating force of the upper end of the driving device is converted into the driving force for the reciprocating movement of a partition plate through a first transmission device, so that the feeding port is controlled to be in intermittent communication with an arc-shaped feeding channel, the lower end of the driving device drives a plurality of grinding discs mounted in a grinding cavity to synchronously rotate through a second transmission device so as to secondarily grind the broken stones, and a discharging plate which is driven by the driving device to be intermittently opened and closed is arranged between the crushing cavity and the grinding cavity. The construction waste graded crushing equipment has the technical effect that construction waste is crushed more finely.

The invention relates to a tea leaf sorting machine. The tea leaf sorting machine comprises a rack, a motor is arranged at one end of the rack, and a support is arranged at the other end of the rack. The support is provided with a sorting device. The tea leaf sorting machine further comprises a storage unit matched with the sorting device and also comprises a controller connected with the motor, and the motor is in transmission connection with the sorting device. To sum up, the sorting device, the storage unit and the controller are arranged on the preferable support in the scheme, classified treatment of tea leaves is achieved, and the movement speed of the sorting device can be controlled through the preferable controller so that the tea leaf sorting machine can adapt to more kinds of tea leaves. The production efficiency is improved, and the production cost is reduced. The tea leaf sorting machine is simple in overall structure, high in practicability, low in cost and capable of being widely applied to agricultural corporations and tea workshops.

The invention relates to a coalescing vacuum type oil cleaning device, which comprises an oil inlet valve, a first switch valve, a coalescing separator, a second switch valve and an oil outlet valve serially connected in a main oil way in sequence, wherein a first check valve is arranged between the coalescing separator and the second switch valve; both ends of the second switch valve are connected with a vacuum separator component in parallel; the oil inlet of the vacuum separator component is serially connected with a third switch valve; and the oil outlet of the vacuum separator component is serially connected with a second check valve. The coalescing vacuum type oil cleaning device has the beneficial effect that the device is not only capable of being suitable for cleaning treatment of oil with serious water seepage or opacification so that impurities of moisture, metallic particles and the like in the oil are efficiently removed, but also capable of realizing stage treatment of oil in various pollution degrees and heating of oil independently.

The invention discloses a dustless vibration sieve powder recovery device, comprising a dustproof cover and a vibration body; a middle position of the dustproof cover is provided with a charging port, the dustproof cover is mounted on a sieving disc by a compressing ring, a discharging port is arranged in one side of the sieving disc, a plurality of sieving discs can be mounted, meanwhile the lower side edge of one sieving disc and the upper side edge of another sieving disc are fixed by a compressing ring, the lower side of the sieving disc is connected to the upper side edge of a base by damping springs, a sieve net is fixed on the bottom side in each sieving disc, the vibration body is fixed on the bottom surface of each sieving disc, a vibration electric motor is arranged in each vibration body, an upper part counter weight is mounted on the upper side of each vibration electric motor, and a lower part counter weight is mounted on the lower part of each vibration electric motor. The dustless vibration sieve powder recovery device is efficient, lightweight and complete and diversified in series, has multiple levels, can meet the requirements on sieving of powder materials, and can recover the powder with unqualified diameters.

The invention discloses an oil-containing and slag-containing wastewater treatment system, which is characterized in that wastewater enters a settling cavity through a water inlet pipe, and in the rising process of the wastewater in the settling cavity, large granular substances settle to a conical bottom and are periodically discharged through a slag discharge port; the wastewater is subjected tooil-slag separation under the matching action of gravity and magnetic force through the multi-stage chambers, and meanwhile separation of particles with different properties in the wastewater is achieved.

The invention discloses a waste mushroom-stick treatment device which comprises a feeding unit, a smashing unit and a shaftless trommel. The feeding unit comprises a feeding frame 1 and a bin, wherein the feeding frame 1 is in driving connection with a belt 1, and the bin is connected to the end, away from the smashing unit, of the belt 1 in a covering mode. The smashing unit comprises a smashing box, a feeding frame 2 and a smashing motor, wherein the feeding frame 2 is in driving connection with a belt 2, the smashing box is located above the belt 2, and the smashing motor is fixedly connected with one side of the smashing box. The smashing motor is connected with a rotatable smashing device through a belt wheel, and the end, away from the smashing box, of the belt 2 is extended into the shaftless trommel.

The invention provides a data transmission method and device. The method comprises the following steps: confirming priority information of received data; filling the priority information into a grouped data aggregation protocol PDCP frame used for loading data; and sending the PDCP frame filled with the priority information to a far-end processing unit, wherein the far-end processing unit comprises more than two wireless loading RBs for sending data and different priority data are sent on different RBs. According to the invention, the problem that the related technique cannot adapt to mass flow data processing can be solved and the purposes of performing grading transmission on the mass flow data and increasing the data transmission rate can be achieved.

The present invention discloses a method and an apparatus for flue gas desulfurization and sulfuric acid production. The method comprises that (1) flue gas is subjected to heat exchange through a sulfuric acid storage tank, and then the obtained flue gas enters a dust removing quenching tower and is subjected to primary dust removing cooling; (2) the cooled flue gas enters a desulfurization tower and sequentially passes through a deep dust removing unit, a desulfurization unit and a water washing unit from bottom to top; (3) in the water washing unit, the SOx in the flue gas is absorbed with fresh water, the liquid phase overflows and sequentially passes through the desulfurization unit and the deep dust removing unit, the obtained liquid phase enters the dust removing quenching tower to obtain a rich absorption liquid, solid-liquid separation is performed, and the gas phase is discharged in atmosphere after defogging; and (4) the rich absorption liquid being subjected to solid waste separation is discharged into an oxidation tank, the liquid phase enters a regeneration tower, the Fe<3+> / Fe<2+> in the liquid phase is removed, and the obtained liquid phase enters the sulfuric acid storage tank in the form of dilute sulfuric acid. With the method and the apparatus of the present invention, the SO2 in the flue gas can be absorbed and concentrated, and can be oxidized into the sulfuric acid so as to produce the high concentration sulfuric acid, the purified flue gas can meet the national or local relevant standard requirements, and the method and the apparatus are suitable for the recovery treatment of flue gas containing various concentrations of sulfur dioxide.

The invention relates to an electro-Fenton reaction device and a wastewater treatment method. The reaction device comprises an anode tank, an adjusting tank and a cathode tank, electrodes in the anode tank and the cathode tank are used as driving electrodes, a conductive part is used as a common electrode to transmit electrons, and the anode tank and the cathode tank independently react. The wastewater treatment method comprises the following steps: adjusting the pH value of wastewater, adding a catalyst, and introducing the wastewater into the anode tank, the adjusting tank and the cathode tank; adding an oxidizing agent into the cathode tank, turning on a power supply and an ultraviolet lamp, and carrying out degradation reaction; and discharging the wastewater in the cathode tank, injecting the wastewater in the adjusting tank into the cathode tank, injecting the wastewater in the anode tank into the adjusting tank, injecting the untreated wastewater into the anode tank, and continuously carrying out degradation reaction. The problem that in the process of treating the high-salinity wastewater through an existing electro-Fenton system, chloride ions rapidly consume an oxidizing agent, and consequently the treatment effect of the high-salinity wastewater is poor is solved.

The invention relates to an automation thermal power plant adopting a closed-loop control technology. The automation thermal power plant comprises a central control device, a combustion gas turbine power generating mechanism, a waste gas treatment mechanism and a waste heat recovery mechanism, wherein the combustion gas turbine power generating mechanism, the waste gas treatment mechanism and the waste heat recovery mechanism are sequentially communicated; and the combustion gas turbine power generating mechanism comprises an air inlet pipe. According to the automation thermal power plant adopting the closed-loop control technology, the temperature in the waste heat recovery mechanism is accurately measured through a temperature sensor, the temperature is then fed back to a control valve to form closed-loop control, it is guaranteed that the inlet water speed is accurately controlled, and therefore sufficient absorption of residual heat is achieved; then the residual heat is sufficiently used by the combustion gas turbine power generating mechanism to generate power, so that the using efficiency of the residual heat is improved; in this way, an exhaust damper, a first chimney and a second chimney are matched, so that graded treatment on gas is achieved, the treatment reliability of waste gas impurities is accordingly improved, pollution to the environment is reduced, and the practicability of the device is improved.

The invention discloses an oily wastewater treatment device which comprises a wastewater collection tank, wherein a water inlet is formed in the side wall of the wastewater collection tank, and an oil baffle is arranged inside; an oil absorption pipe is arranged at the top of the wastewater collection tank and connected with an oil residue adsorption tank through an oil pump; filler is arranged at the bottom of the oil residue adsorption tank, and a slag outlet is formed in the side wall; the wastewater collection tank is connected with a sedimentation tank through a water pump 1; a residue outlet is formed at the bottom of the sedimentation tank; the sedimentation tank is connected with an anaerobic reaction tank through a water pump 2; an anaerobic bacteria carrier is arranged in the anaerobic reaction tank; the anaerobic reaction tank is connected with a clear water tank through a water pump 3; and a water outlet is formed in the side wall of the clear water tank. Compared with traditional technology, the device disclosed by the invention is scientific in design and simple in structure; and through treatment after oil-water separation, the treatment effect is perfect, and oil-water separation stage treatment is realized.

The invention provides an intelligent energy-saving running device for a green roof type sewage grading treatment system. The intelligent energy-saving running device is characterized by comprising asewage treatment unit, an accident emergency unit, a control unit and an energy supply unit; the control unit is electrically connected with the sewage treatment unit, the accident emergency unit andthe energy supply unit; the accident emergency unit is equipped with a water quality online monitor and a liquid level sensor which are electrically connected with the control unit; the sewage treatment unit is equipped with a flow meter, a water quality online monitor and a DO, pH and ORP monitor which are electrically connected with the control unit; the sewage treatment unit is connected with the accident emergency unit through a pipeline and an intelligent valve; the energy supply unit is electrically connected with the sewage treatment unit and the accident emergency unit. Under interaction of all the units, the intelligent energy-saving running device is capable of intelligently energy-saving running; the discharged water after treatment is better than water specified in different executing standards; the intelligent energy-saving running device has the advantages of full automatic control, simple operation, convenience in management, stable running, easiness in maintenance, cost-saving effect, and the like.

The invention discloses a sewage treatment system which comprises a plurality of serially connected sewage treatment tanks. Each sewage treatment tank comprises a water inlet, a water outlet and a carrier, and the carriers are used for providing growing environments of microorganisms in biological sewage treatment. The system specifically treats pollutant by a multistage grading treatment method and is good in treatment effect, low in expense and investment, small in occupied area, high in biological concentration, high in impact resistance, less in producing sludge, free from backflow and odor, and different sources of microorganisms exist in the carries by the aid of a stereoscopic structure.

The invention relates to secondary dust-removal equipment used for separating fine particulate matter dust in tail gas. The secondary dust-removal equipment is characterized by comprising a tower body, wherein a spraying and dust-removing device, and a wet-electric dust-removing device are sequentially arranged in the tower body from bottom to top; the left end of the tower body is equipped with aflue gas inlet; the upper end of the tower body is equipped with a flue gas outlet; the spraying and dust-removing device comprises a gas flow distributing plate, a spraying device and a de-mister which are sequentially arranged from bottom to top; a wastewater recycling box is arranged below the gas flow distributing plate; the flue gas inlet is formed between the gas flow distributing plate andthe wastewater recycling box; and an overflow slot is formed in the wastewater recycling box. According to the secondary dust-removal equipment disclosed by the invention, the spraying and dust-removing device and the wet-electric dust-removing device are combined in series for use, so that graded treatment and efficient removal on liquid-state or solid-state particles and gas-phase pollutants are realized.

The invention provides a dining table capable of automatically replacing garbage bags. The dining table includes a table top, a support column, and a garbage collection system. The table top is provided with several garbage put-in openings, one end of the support column is fixedly connected with the center of the lower surface of the desk top and vertically arranged at the center in a side panel of a table body, and the other end of the support column is connected with a supporting chassis which is attached to the ground; the garbage collection system includes several first-level collection modules and a second-level collection module. The first-level collection modules are fixed below the table top and in the space inside the side panel of the table body and used for receiving garbage falling from the garbage put-in openings and replacing the garbage bags; the second collection module includes a rotatable second-level garbage can used for receiving the garbage bags falling from the first-level collection modules. The dining table capable of automatically replacing the garbage bags can effectively and automatically replace the garbage bags and perform the unified collection and treatment of the garbage bags filled with garbage.

The invention discloses a coking wastewater advanced treatment system and a treatment method thereof. The system comprises a first high-salinity wastewater conveying pipe, a first pretreatment system, a second high-salinity wastewater conveying pipe, a mixing pool, a second pretreatment system, a three-stage salt separation system and an evaporative crystallization system, the method comprises the following steps: (1) primary pretreatment; (2) secondary pretreatment; (3) third-stage salt separation; and (4) evaporative crystallization. According to the invention, stage treatment of high-concentration coking wastewater and low-concentration coking wastewater is realized, the water treatment pressure of a subsequent system is reduced, and safe and stable operation of the subsequent system can be ensured; the evaporation water quantity is greatly reduced, the energy consumption of evaporation and crystallization is effectively reduced, and the investment and operation cost of an evaporation and crystallization system is greatly reduced; the wastewater is subjected to salt separation by adopting a three-stage salt separation method, so that the yield of carnallite is greatly reduced, high-quality sodium sulfate crystal salt and sodium chloride crystal salt can be obtained, and the resource utilization rate is greatly improved.