37results about How to "Achieve the purpose of concentration" patented technology

The invention discloses a high-salt wastewater evaporation concentration method and device, belonging to the technical field of high-salt wastewater treatment. The method comprises a process of heating high-salt wastewater for evaporation and concentration. The method is characterized by comprising the following steps: carrying out oriented scale formation before heating the high-salt wastewater, heating the high-salt wastewater by using a surface-type heat exchanger, and evaporating the heated high-salt wastewater by using a mechanical draught cooling tower, wherein the heat medium water adopted in the surface-type heat exchanger is circulating cooling water flowing out of the steam condenser. The circulating cooling water of the condenser is utilized to perform heat exchange and heating on the high-salt wastewater, and the heated high-salt wastewater is sent into the mechanical draught cooling tower for evaporation, thereby lowering the heat loss of the circulating cooling water of the condenser, enhancing the cooling efficiency of the condenser, and lowering the high-salt wastewater treatment cost.

The invention relates to a jellyfish beverage, which comprises fresh jellyfish processing liquid and auxiliary additives, wherein the fresh jellyfish processing liquid is prepared through fresh jellyfish enzymolysis through trypsin and desalting and deodorization treatment on enzymatic hydrolysate. The jellyfish beverage avoids the occurrence of aluminum elements in products when alum is used as processing auxiliary agents in the traditional pickled jellyfish process, the product safety is improved, and the eating value and the economic benefits of the jellyfish are increased. In the enzymolysis process, the trypsin is used as the hydrolysis enzyme, the best hydrolysis degree is obtained, more free amino acid and polypeptide are obtained, and the nutrition value of products is improved. Ultrafiltration membrane equipment is adopted in the desalting process for desalting, a higher desalting rate and a higher nitrogen recovery rate can be obtained. In the deodorization process, a combined deodorization method of active carbon and yeast is adopted, and an ideal effect is received. In the preparing process, food additives and food raw materials such as sugar, acid, stabilizing agents and the like are added, and the stability and the palatability of the food are improved.

The invention discloses a method for extracting lutein ester from marigold. The method comprises the following steps: selecting a raw material, fermenting, pressing, grinding, pelleting, extracting, filtering, concentrating by using a reverse osmosis membrane, thin film evaporation, blending, and barreling and warehousing after passing the inspection. Isopropyl alcohol is used as a solvent for extracting the lutein ester without containing benzene, phenol and hydrocarbon substances, so that harms to human bodies are avoided and the residual amount of harmful substances is reduced; harmful residues can be discharged without gasification, so that the production time and the production cost are reduced greatly; by a reverse osmosis membrane concentration technology, a lutein ester extract is concentrated at room temperature, without heating; the reverse osmosis membrane concentration technology is good in technical and economic performance; by the reverse osmosis membrane concentration technology, the quality and the yield of the lutein ester are greatly improved.

The invention discloses a preparation method of a flat membrane for sludge concentration, and belongs to the fields of sludge concentration flat membranes. The method comprises the following steps: sequentially adding a solvent, a pore-foaming agent, a surface active agent and polyvinylidene fluoride (PVDF) into a wild-mouth bottle according to certain ratio, and meanwhile performing stirring, soas to uniformly mix the materials, then putting the wild-mouth bottle into a 50 to 80 DEG drying oven, and timely stirring every day, so as to obtain a uniformly mixed casting solution, uniformly coating the casting solution onto a non-woven fabric base material through a flat film blade, soaking non-woven fabric into a coagulating bath, so as to perform phase transformation, soaking a flat membrane into glycerinum, then treating the flat membrane, and performing normal temperature drying treatment, so as to obtain a PVDF membrane used for sludge concentration treatment. The PVDF membrane hasthe characteristics of high flux, high strength and low pollution rate, can ensure that water yielding is stable when being applied to a flat membrane sludge concentration reactor, and properly meetsthe requirement on sludge concentration.

The invention relates to an electrodialysis membrane recovery process for acid wastewater in viscose fiber spinning, and belongs to the technical field of electrodialysis membrane recovery. The process comprises steps of: pretreatment of low-concentration acid wastewater, pretreatment of an acid bath after spinning, arrangement of electrodialysis membrane components, entrance of electrodialysis membrane components to the acid bath after spinning, ion transfer, and acid bath reuse. Acid wastewater in viscose fiber spinning is treated through the specific electrodialysis membrane recovery process, sulfuric acid and zinc sulfate in the low-concentration of acid wastewater is effectively recovered, the acid bath after spinning achieves the requirements of the acid bath before spinning and is reused, and consumption of alkaline substances and discharge of salt substances are reduced.

The invention relates to a bitter herbs polysaccharide extraction method. The method comprises the steps of dry crushing, ultrasonic extraction, reduced pressure concentration, ethanol precipitation, dialysis and vacuum drying. The extraction method has the advantages of simplicity, low cost and stable process. The bitter herbs polysaccharide extraction method improves the content of bitter herbs polysaccharide to 0.53% and the purity of the bitter herbs polysaccharide to 82% by optimizing the technological parameters, such as crushing particle size, ultrasonic extraction parameters and semi-permeable membrane permeation size.

The invention discloses a multi-level light alkali evaporating unit. The multi-level light alkali evaporating unit is characterized by comprising first to fourth level shell-and-tube heat exchangers and first to fourth level steam separators, wherein the first to fourth level shell-and-tube heat exchangers are sequentially connected through valves, the first to fourth level shell-and-tube heat exchangers are correspondingly connected with the first to fourth level steam separators in a one-to-one correspondence, a vaporized alkaline liquor in the shell-and-tube heat exchanger is conveyed to the corresponding steam separator to separate the steam and the liquid, the liquid separated by each level of the steam separator is conveyed back to the correspondingly connected shell-and-tube heat exchanger, the separated steam is conveyed to the next level of the shell-and-tube heat exchanger, and a concentrated alkali is output from the fourth level shell-and-tube heat exchanger. The multi-level light alkali evaporating unit increases the efficiencies of evaporation, concentration and recovery of the light alkali, greatly saves the energies, reduces the cost, is more efficient and energy-saving, and brings more benefits for an enterprise.

The invention relates to a concentration method of a pseudo-ginseng total saponin extracting solution. A reverse osmosis process is mainly utilized to concentrate the pseudo-ginseng total saponin extracting solution. The concentration method provided by the invention has the advantages of favorable concentration effect and small loss.

The invention discloses a network node monitoring method. The method includes acquiring a set of network nodes to be monitored; Dividing the network node set into a first preset number of neighborhoods according to a first preset rule, wherein each of the neighborhoods comprises a second preset number of network nodes; A node is determined as a monitoring node in each of the neighborhoods according to a second preset rule, wherein the monitoring node is used for monitoring other network nodes in the neighborhood in which the monitoring node is located. The present application also provides a network node monitoring system that implements the network node monitoring method described above. The present application solves the technical problems of lack of pertinence of monitoring, huge calculation amount and workload, and high monitoring cost due to the 1 to 1 monitoring mode adopted in the related art.

The invention relates to a processing method of concentrated clear apple juice with high color value stability. The processing method comprises the following steps: (1) purchasing , checking, accepting, cleaning and sorting of apples; (2) pretreatment and dicing; (3) pulping, juicing and color protecting; (4) sterilizing and cooling; (5) multi-enzyme co-carrier immobilization clarification; (6) adsorption with nanofiber modified resin ; (7) concentrating; and (8) filling, bottling and sterilizing. The method disclosed by the invention meets market demands, develops the concentrated clear apple juice with a stable color value, has a good cleaning effect, is safe and residue-free, can well remove residual pesticides, kill rot-causing fungi, improve the color and luster of fruit juice and reduce phenolic substances in the fruit juice, achieves the effects of clarification and stabilization, eliminates an ion concentration in the clear fruit juice, improves the quality of the fruit juice, and maintains the original flavor and quality of the apple juice are to the greatest extent.

The invention relates to a cyclic utilization device for recycling, finely-steaming and purifying NMP in coating process of a lithium ion battery. The cyclic utilization device comprises a coating machine, a heat exchanger, a rotating wheel, finely-steaming and purifying equipment, a waste liquid tank, automatic liquid feeding equipment and an NMP solution storage tank. The device is characterized in that the heat exchanger comprises a heat exchanger high-temperature inlet, a heat exchanger low-temperature inlet, a heat exchanger dry air inlet and a heat exchanger dry air outlet; and a coating machine head and a coating machine tail are arranged on the left and right sides of the coating machine, respectively, an exhaust pipeline is arranged above the coating machine and is connected with an exhaust fan, the exhaust fan is connected with the heat exchanger high-temperature inlet through the exhaust pipeline, and an air supply pipeline is arranged below the coating machine. The cyclic utilization device is used for adsorbing NMP exhaust gas exhausted in a coating production process of the lithium ion battery and converting NMP in the exhaust gas into liquid to be recycled by virtue of a condenser so as to realize recycle and reuse, the concentration of NMP is high, and the purifying rate is high; and the automation degree of the device is high, and the recycling rate of liquid is high.

The invention belongs to the technical field of food processing, and provides a concentrated fruit and vegetable juice, and a processing method thereof. The processing method comprises following steps: fruit and vegetable juice is subjected to refrigeration for 20 to 30h at -20 to -18 DEG C, the refrigerated fruit and vegetable juice is subjected to unfreezing draining at vacuum conditions, thawedliquid is collected in different batches so as to obtain liquids with different primary sweet degrees, the liquids with sweet degrees lower than a preset sweet degree are subjected to the above refrigeration and vacuum unfreezing process for another time, thawed liquid is collected in different batches so as to obtain liquids with different second sweet degrees, and the above operation is repeated until liquid concentration reaches the preset sweet degree so as to obtain the concentrated fruit and vegetable juice, the concentrated fruit and vegetable juice is stored at -20 to -18 DEG C, and is subjected to disinfection processing. The whole concentration process and the disinfection process are carried out at relatively low temperature, fruit and vegetable juice nutritional components andfragrant components are protected as far as possible in concentration process, the concentrated fruit and vegetable juice prepared through processing is excellent in quality, and small in size, and is convenient for transportation.

The invention discloses a hydropower coproduction system capable of performing gradient utilization of flue gas waste heat concentrated solutions and a working method of the hydropower coproduction system, and belongs to the field of energy resources and power. The hydropower coproduction system is characterized in that the heat quantity of flue gas (1) is absorbed by an inorganic salt dilute solution (2) in a heater (9), so that waste heat recovering is realized; the heated dilute solution enters a humidifying tower (10) to transfer heat and mass to low-temperature dry air (3); when the temperature of the air (3) is raised, the moisture content of the air (3) is increased, then the air (3) enters a heat exchanger (13) to transfer heat and mass to an organic working medium (4); the temperature of the air (3) is reduced, and the moisture is deposited; the low-temperature air (3) enters a gas-liquid separator (14); and the separated air enters the humidifying and packing tower (10) againthrough a fan (15) to start the next circulation. The hydropower coproduction system disclosed by the invention utilizes the differences of moisture loading capacity of the air in different temperatures, through the direct contact of air-dilute solution in the humidifying tower, heat and mass transferring is performed, and the concentration of the inorganic salt dilute solution is realized; the gradient utilization of energy is realized, the utilization rate is high, and the energy saving effect is good.

The invention discloses a novel tea juice concentration method. The method includes the following steps of S1, preparation of raw materials, wherein tea components are extracted with hot water, a tea juice stock solution with the solid content of 0.8%-3% is obtained through at least one-time pre-filtration with a 300-500-mesh filter screen or a filter bag, and the tea juice stock solution with the set volume is put into a raw material tank; S2, preparation of a drawing liquid, wherein a salt solution or saccharide solution with the osmotic pressure greater than 3.5 Mpa is prepared into the drawing liquid, and the drawing liquid with the set volume is put into a drawing liquid tank; S3, concentration, wherein a raw material circulating pump is started to convey the stock solution into a forward osmosis membrane module, a drawing liquid circulating pump is started to convey the drawing liquid into the forward osmosis membrane module at the same time, the temperature is controlled at 10-30 DEG C, the pressure is controlled at 0-2 bar, the circulating flow rate of the stock solution is 20-120 L / h, the circulating flow rate of the drawing liquid is 10-50 L / h, and concentrated tea juice with the soluble solid concentration of 30-60% is obtained 40-120 minutes after running. According to the method, the tea juice is concentrated by utilizing a forward osmosis membrane technology, there is no external pressure for driving in the forward osmosis membrane concentration process, the energy consumption is small, the contamination degree of a membrane surface is small, and flavor substances and nutrient substances in the tea juice can be retained.

The invention discloses a method of gradient in-series membrane concentration for a bone extract liquid. A device for the method is provided with: a micro-filtering concentration system, which includes a first circulating flow path having a ceramic membrane filter, wherein the first circulating flow path is used for performing micro-filtration circulating concentration through the first circulating flow path to obtain a micro-filtered concentrate; a primary reverse osmosis concentrating system, which includes a second circulating flow path having a primary reverse osmosis membrane filter, wherein the second circulating flow path is used for performing primary reverse osmosis circulating concentration to the filtrate to prepare a primary concentrate; and a secondary reverse osmosis concentrating system, which includes a third circulating flow path having a secondary reverse osmosis membrane filter, wherein the third circulating flow path is used for performing secondary reverse osmosis circulating concentration to the primary concentrate to obtain a secondary concentrate. The method concentrates the bone extract liquid with reduction on energy consumption, and greatly reduces loss of nutrients and flavor substances in the bone extract liquid.

The invention discloses a coffee concentration device and a use method thereof. The coffee concentration device comprises a coffee liquid tank used for containing a coffee stock solution; a forward osmosis system provided with a forward osmosis membrane inside, with a first inlet of the forward osmosis system being communicated with an outlet of the coffee liquid tank, and a first outlet of the forward osmosis system being communicated with an inlet of the coffee liquid tank; a draw solution tank used for containing a draw solution, with a first inlet of the draw solution tank being communicated with a second outlet of the forward osmosis system, and a first outlet of the draw solution tank being communicated with a second inlet of the forward osmosis system. When the coffee concentrationdevice disclosed by the invention is in use, the coffee stock solution is contained in the coffee liquid tank, the draw solution is contained in the draw solution tank, the forward osmosis system is started, and water in the coffee stock solution in the coffee liquid tank passes through the forward osmosis membrane in the forward osmosis system and enters the draw solution tank. The coffee concentration cost and energy consumption are reduced, and separation difficulty of ice crystals formed after freezing and a concentrated solution is reduced.

The invention belongs to the technical field of graphene, and particularly relates to a preparation method of a graphene-based photocatalytic material. The preparation method comprises the following steps: adding graphene and a dispersing agent into deionized water, and adding hydrochloric acid and ammonia gas for performing a microwave reaction to obtain an ammonified graphene solution; adding zinc acetate into ethanol water, introducing ammonia gas for performing an aeration backflow reaction, and performing a reduced-pressure distillation reaction and a constant-pressure standing reaction to obtain a thick liquid; then, dropwise adding the thick liquid into the ammonified graphene solution, meanwhile, performing the microwave reaction to obtain a photocatalytic dilute solution, and performing a secondary reduced-pressure distillation on the photocatalytic dilute solution to obtain the graphene photocatalytic material. According to the preparation method, the graphene is introduced,so that the visible light absorbing performance of a catalyst is improved effectively; meanwhile, the separation between photoexcitation electrons and holes is facilitated, so that the quantum efficiency is increased.

The invention provides a method for removing aluminum from anodizing chemical-polishing effluent. The method comprises the following steps: a, uniformly mixing aged chemical-polishing bath solution and rinsing water containing the chemical-polishing bath solution, so as to form a mixed solution; b, cooling the mixed solution to below 45 DEG C by a heat exchanger; c, filtering the cooled mixed solution by a bag filter and intercepting particles with the particle size being more than 5 mum; d, conveying the solution treated by the filter to an NF (nanofiltration) membrane separation system witha high pressure pump, so as to obtain high-concentration aluminum effluent and aluminum-removed purified acid solution; e, pumping the aluminum-removed purified acid solution into an evaporation system and evaporating and concentrating the aluminum-removed purified acid solution to the recyclable standard.

The invention relates to the technical field of glucosamine concentration equipment. The invention further discloses double-heating circulating material concentration equipment for MVR. The equipmentcomprises a material, a balance pipe and heating equipment. The material enters a conveying pipeline through a feeding port. When the heating device begins to work, the heating equipment dissipates heat, and then the heat is transferred to the conveying pipeline through air or by taking a shell as a medium to heat the interior of the conveying pipeline. The material in the conveying pipeline is heated, then, moisture in the material is evaporated, the evaporated water vapor floats upwards, finally, the floating water vapor floats upwards to the lower part of an arc-shaped block through an opening, and finally, the water vapor is condensed on the lower wall surface of the arc-shaped block. Thus, the evaporated water vapor is prevented from being condensed on the inner wall of the conveyingpipeline and then sliding into the conveying pipeline along the inner wall, and the situation in which the material which is originally condensed by evaporating water is contaminated by water again, so that the material is diluted and the use is influenced is avoided.

The invention provides a flat plate falling film type freeze concentrator and a freeze concentration method thereof. The flat plate falling film type freeze concentrator comprises a shell, and the interior of the shell is divided by heat conducting separation plates into a falling film freezing chamber, a temperature control chamber and a concentrated liquid collecting chamber. The heat conducting separation plate between the temperature control chamber and the falling film freezing chamber is a falling film freezing plate, and the heat conducting separation plate between the concentrated liquid collecting chamber and the falling film freezing chamber is an ice water collecting plate. A solid-liquid separating net opening enabling the falling film freezing chamber and the concentrated liquid collecting chamber to be communicated is formed in the end, close to the falling film freezing plate, of the ice water collecting plate. A solution inlet pipe, a concentrated liquid recycling pipe, a solution pump and a storage tank are communicated for backflow. According to the flat plate falling film type freeze concentrator and the freeze concentration method thereof, a falling film mode is adopted for cooling capacity exchange, the flowing speed of a falling film solution is scientifically controlled, the pre-cooling temperature of the solution and the temperature of a secondary refrigerant are precisely controlled, and ice on a falling film frozen face grows in a single ice crystal mode as much as possible, so that the formed ice layer is little in entrained solute and effective ingredient loss.

The invention relates to an electrodialysis membrane recovery process for acid wastewater in viscose fiber spinning, and belongs to the technical field of electrodialysis membrane recovery. The process comprises steps of: pretreatment of low-concentration acid wastewater, pretreatment of an acid bath after spinning, arrangement of electrodialysis membrane components, entrance of electrodialysis membrane components to the acid bath after spinning, ion transfer, and acid bath reuse. Acid wastewater in viscose fiber spinning is treated through the specific electrodialysis membrane recovery process, sulfuric acid and zinc sulfate in the low-concentration of acid wastewater is effectively recovered, the acid bath after spinning achieves the requirements of the acid bath before spinning and is reused, and consumption of alkaline substances and discharge of salt substances are reduced.

The invention discloses a preparation method of a flat membrane for sludge concentration, and belongs to the fields of sludge concentration flat membranes. The method comprises the following steps: sequentially adding a solvent, a pore-foaming agent, a surface active agent and polyvinylidene fluoride (PVDF) into a wild-mouth bottle according to certain ratio, and meanwhile performing stirring, soas to uniformly mix the materials, then putting the wild-mouth bottle into a 50 to 80 DEG drying oven, and timely stirring every day, so as to obtain a uniformly mixed casting solution, uniformly coating the casting solution onto a non-woven fabric base material through a flat film blade, soaking non-woven fabric into a coagulating bath, so as to perform phase transformation, soaking a flat membrane into glycerinum, then treating the flat membrane, and performing normal temperature drying treatment, so as to obtain a PVDF membrane used for sludge concentration treatment. The PVDF membrane hasthe characteristics of high flux, high strength and low pollution rate, can ensure that water yielding is stable when being applied to a flat membrane sludge concentration reactor, and properly meetsthe requirement on sludge concentration.

The invention belongs to the technical field of graphene, and specifically relates to a preparation method of a graphene-based photocatalytic material. Graphene and a dispersant are added to deionized water, and hydrochloric acid and ammonia gas are added to carry out microwave reaction to obtain an ammoniated graphene solution; acetic acid Zinc is added to ethanol water, and ammonia gas is introduced to carry out aeration and reflux reaction, vacuum distillation reaction and constant pressure standing reaction to obtain a viscous liquid; Catalyze the dilute solution, and finally carry out the second vacuum distillation reaction on the photocatalyzed dilute solution to obtain the graphene photocatalytic material. In the present invention, the introduction of graphene effectively improves the absorption capacity of the catalyst for visible light and at the same time promotes the separation of photoexcited electrons and holes, thereby improving quantum efficiency.

The invention discloses a method for concentrating bone extract with gradient serial membranes, comprising: providing a microfiltration concentration system, the microfiltration concentration system includes a first circulation flow path with a ceramic membrane filter; The extract is concentrated by microfiltration circulation to obtain a microfiltration concentrate; a first-stage reverse osmosis concentration system is provided, and the first-stage reverse osmosis concentration system includes a second circulation flow path with a first-stage reverse osmosis membrane filter; using the second circulation flow path Concentrate the filtrate with a reverse osmosis cycle to obtain a concentrated liquid; provide a secondary reverse osmosis concentration system, the secondary reverse osmosis concentration system includes a third circulation flow path with a secondary reverse osmosis membrane filter; use the third circulation The flow path performs secondary reverse osmosis cycle concentration on the primary concentrated liquid to obtain the secondary concentrated liquid. The invention achieves the purpose of concentrating the bone extract under the condition of reducing energy consumption, and greatly reduces the loss of nutrition and flavor substances of the bone extract.

The invention relates to the technical field of liquid separation and purification, and discloses a liquid separation and purification device, which comprises a separation barrel, an upper cover, a liquid inlet and a liquid outlet, wherein the upper cover covers the upper end of the separation barrel, the liquid outlet and the liquid inlet are fixedly formed in the left side and the right side, close to the upper end, of the separation barrel correspondingly, a first guide plate and a second guide plate are fixedly mounted on the inner wall of the separation barrel, an auxiliary mechanism is mounted on the upper wall of the second guide plate, a fixing sleeve is fixedly mounted at the lower end of the upper cover, a rotating shaft is sleeved with the fixing sleeve, the upper end of the rotating shaft penetrates through the upper cover, and a rubber rod is fixedly mounted on the outer wall of the rotating shaft. According to the invention, a liquid anticlockwise flows from top to bottom, so that the rotating effect is achieved, the purpose of concentrating impurities is achieved, purification can be achieved under the condition that the flow speed is high, and the flowing-out liquid is higher in purity; and a rubber rod is in a swinging state, so that suspended impurities can be more easily attached to fluff, and the liquid is further purified.

The invention discloses a high-salt wastewater evaporation concentration method and device, belonging to the technical field of high-salt wastewater treatment. The method comprises a process of heating high-salt wastewater for evaporation and concentration. The method is characterized by comprising the following steps: carrying out oriented scale formation before heating the high-salt wastewater, heating the high-salt wastewater by using a surface-type heat exchanger, and evaporating the heated high-salt wastewater by using a mechanical draught cooling tower, wherein the heat medium water adopted in the surface-type heat exchanger is circulating cooling water flowing out of the steam condenser. The circulating cooling water of the condenser is utilized to perform heat exchange and heating on the high-salt wastewater, and the heated high-salt wastewater is sent into the mechanical draught cooling tower for evaporation, thereby lowering the heat loss of the circulating cooling water of the condenser, enhancing the cooling efficiency of the condenser, and lowering the high-salt wastewater treatment cost.

The invention relates to the technical field of pumpkin seed separation, in particular to pumpkin seed separation equipment for waste pumpkin pulp and a using method. The pumpkin seed separation equipment comprises a base, a controller, a centrifugal mechanism, a drying mechanism and a rolling brush mechanism, the controller is fixedly arranged on one side of the top of the base, the centrifugal mechanism comprises a support, a centrifugal kettle, a stirring assembly, a wadding winding assembly, a water supply assembly and a deslagging assembly, the drying mechanism comprises a supporting frame, a hot air assembly and a shoveling and pushing assembly, the supporting frame is fixedly arranged on the base and located beside the controller, the shoveling and pushing assembly is arranged on one side of the hot air assembly and fixedly connected with the hot air assembly, and the rolling brush mechanism is arranged on one side of the supporting frame and fixedly connected with the supporting frame. According to the pumpkin seed separation equipment for waste pumpkin pulp, waste pumpkin pulp to be separated is put into the centrifugal kettle through a conical opening, pumpkin seed extraction can be conducted on the waste pumpkin pulp by operating the controller, safety, high efficiency, accuracy and controllability are achieved, and the pumpkin seed extraction efficiency is greatly improved.

The application discloses a network node monitoring method. The method includes acquiring a set of network nodes to be monitored; dividing the set of network nodes into a first preset number of neighborhoods according to a first preset rule, wherein each of the neighborhoods includes a second preset number of networks A node; determining a node in each of the neighborhoods according to a second preset rule as a monitoring node, where the monitoring node is used to monitor other network nodes in the neighborhood where the monitoring node is located. The present application also provides a network node monitoring system implementing the above network node monitoring method. This application solves the technical problems of lack of pertinence in monitoring, huge amount of calculation and work, and high monitoring cost due to the adoption of a "1-to-1" monitoring method in the related art.