63results about How to "Simple operation and maintenance" patented technology

The utility model provides an intercepting and purifying device suitable for river-entering farmland ditches, which comprises an intercepting structure and a purifying structure, the intercepting structure comprises a sludge deposition and grit chamber and a steel grating, a denitrification device containing denitrifying phosphorus-accumulating bacteria and adsorptive mineral materials is placed in the sludge deposition and grit chamber, and the steel grating is arranged in the sludge deposition and grit chamber. A sand setting inlet and a sand setting outlet are formed in the two opposite sides of the steel grating respectively, the steel grating is arranged at the sand setting outlet, and the sand setting inlet is used for being communicated with an ecological ditch; the purification structure comprises an ecological purification pond and a gabion packing bed, the ecological purification pond is provided with a purification inlet and a purification outlet, gabions are arranged at the purification inlet and the purification outlet, the ecological purification pond is tightly attached to the sludge deposition and grit chamber, the purification inlet is opposite to and communicated with the grit inlet, and the gabion packing bed is arranged in the sludge deposition and grit chamber. And the gabion packing bed is arranged in the ecological purification pond.

The invention provides a filter dam body for treating aquaculture wastewater and a use method, and relates to the technical field of filter dams. The filtering dam for treating the aquaculture wastewater comprises a dam body. The filtering dam body for treating the aquaculture wastewater comprises cement piles, a filtering dam frame is installed on the upper surfaces of the cement piles, the filtering dam frame is built by adopting two rows of hollow bricks, check blocks are installed on the surface of the bottom of the filtering dam frame, three grids are arranged in the width direction of the cement piles, and surrounding plates are arranged on the two sides of each grid. The construction mode of the filter dam is changed, simple cement piles are adopted as fixed supports, stainless steel filter screens and net cages are combined to form a filter material enclosing structure, the mode is applied to filling of biological ceramsite filter materials, and through further decomposition, adsorption and filtration, the use effect is the same as that of a filter dam of a brick-concrete structure; compared with the prior art, construction is easy and convenient, operation and maintenance are easy, the construction cost is reduced, and very good demonstration significance is achieved.

The utility model provides integrated water purification equipment, relates to the technical field of water purification equipment, and solves the technical problems that the water purification equipment in the prior art is long in process flow, large in occupied area, high in cost and difficult to maintain. The integrated water purification equipment comprises a mechanical mixing tank, a grid flocculation tank, an inclined tube sedimentation tank and an ultrafiltration membrane tank which are arranged in sequence, wherein a plurality of grids are arranged in the grid flocculation tank; a guide wall and a plurality of inclined pipes which are obliquely arranged are arranged in the inclined pipe sedimentation tank; the guide wall is arranged on one side of the water outlet end of the grid flocculation tank; the ultrafiltration membrane tank is arranged at the water outlet end of the inclined tube sedimentation tank; the water levels of the mechanical mixing tank, the grid flocculation tank, the inclined tube sedimentation tank and the ultrafiltration membrane tank are sequentially reduced. The integrated water purification equipment provided by the utility model is simple in process flow, small in occupied area, low in cost and convenient to maintain.

The invention provides a sewage pipeline clogging recognition method and system based on pressure sensors, the system comprises a sewage pipeline, a plurality of pressure sensors are arranged at the bottom in the sewage pipeline at intervals, and power and signal transmission lines of the pressure sensors penetrate out through threading holes under the pipeline and are led to the top of the pipeline along the outer wall of the pipeline. A gap between the sensor and the threading hole is sealed by a waterstop tape, a steel sleeve is arranged on the outer side of the sewage pipeline, and a gap between the sewage pipeline and the steel sleeve is filled with rubber; the power supply and the signal transmission line of each pressure sensor are connected outside the pipeline and then are connected to the wireless data transmission module, and the wireless data transmission module receives a pressure measurement signal and then uploads the pressure measurement signal to a far-end data management center through an operator network. The pressure sensor is arranged in the bottom of the sewage pipeline in advance, a liquid level meter does not need to be arranged, a sewage inspection well does not need to be built, and the pipe network clogging condition is rapidly recognized and the clogged pipe section is locked by comparing and analyzing the upstream and downstream water flow static pressure values of the pipe section.

The utility model relates to the technical field of waste glass recycling, and discloses a waste glass recycling and crushing device which comprises a base, a transmission mechanism is fixedly connected to the surface of the base, a crusher shell is fixedly connected to the surface of the base, the transmission mechanism is rotationally connected with a crushing mechanism, and the crushing mechanism is rotationally connected with the transmission mechanism. The base of the device adopts threaded ground feet, the height of the device can be adjusted by adjusting nuts, the device has the advantages of being convenient to install, simple in structure, low in cost, high in loading capacity and the like, a transmission mechanism adopts V-belt transmission, the V-belt transmission is large in friction force, compact in structure, high in transmission ratio and stable in operation, motor power can be effectively utilized, and machining cost can be reduced. A crushing mechanism in the crusher is a hammer type crushing mechanism, and the hammer type crushing mechanism has the advantages of being large in crushing ratio, high in production capacity, uniform in product, few in over-powder phenomenon, simple in mechanism, light in equipment mass, easy to operate and maintain and the like, and the hammer type crushing mechanism is suitable for crushing medium-hardness and brittle materials, can grind the materials into uniform particles and is high in production efficiency.

The invention discloses a feeding, chopping and overhauling posture adjusting device and a silage harvester. Comprising a mounting rack, tire assemblies arranged on the mounting rack, a chopping assembly rotationally arranged on the mounting rack and located between the tire assemblies, and a lifting assembly hinged to the mounting rack and the chopping assembly. The pushing assembly is hinged to the first side portion of the upper end of the chopping assembly and the first side portion of the upper end of the feeding assembly, and the first sliding assembly is arranged on the first side portion of the lower end of the chopping assembly and hinged to the first side portion of the lower end of the feeding assembly. The feeding assembly and the chopping assembly are adjusted to be in the optimal maintenance posture, so that rapid maintenance is achieved, only the maintenance posture needs to be adjusted during maintenance, maintenance operation is simple, the maintenance time is shortened, the maintenance efficiency is improved, and the maintenance cost is reduced. And sufficient maintenance space is ensured, the maintenance efficiency is high, and the maintenance time is short.

The invention discloses a paper-plastic forming machine which comprises a rack body, a pulper, a primary pulp barrel and a pulp fishing device, the pulper is arranged on the upper portion of the rack body, and the primary pulp barrel is detachably arranged in the rack body; the pulp fishing device is arranged on the rack body beside the pulp pool, a pulp storage pool is arranged below the pulp fishing device, a pool barrel is arranged beside the pulp storage pool, and the pulper throws smashed pulp into the primary pulp barrel; original slurry is pumped into the slurry storage tank by the slurry pump, and slurry is fished and shaped by the slurry fishing device; water in the water tank barrel is pumped into the pulper through a water pump; the primary pulp barrel comprises a pulp barrel body, air blowing pipelines are uniformly arranged in the pulp barrel body, each air blowing pipeline is composed of a vertical pipeline and a plurality of horizontal pipelines, the vertical pipelines are communicated with the horizontal pipelines, and a plurality of air blowing holes are uniformly formed in the horizontal pipelines at intervals. The pulp chest of the forming machine can be replaced, the forming machine can adapt to production of paper-plastic products with different colors, and meanwhile, the forming machine is simple and small in structure and easy to operate and maintain.

The flue gas desulfurization device based on the calcium-based absorbent, provided by the utility model, is high in desulfurization efficiency, simple in structure, simple to operate and maintain, and capable of efficiently absorbing sulfur oxides in flue gas so as to realize flue gas treatment. The bottom end of the desulfurizing tower shell is communicated with an inlet smoke box, the end part of the inlet smoke box is communicated with a smoke inlet, and an inlet smoke guide plate is arranged in the inlet smoke box close to the smoke inlet; the top end of the desulfurizing tower shell is communicated with an outlet smoke box, the end part of the outlet smoke box is communicated with a smoke outlet, and an outlet smoke guide plate is arranged in the outlet smoke box close to the smoke outlet; a rectifying grid is arranged in the desulfurizing tower shell close to the inlet smoke box; the first desulfurization module layer, the second desulfurization module layer,..., the nth desulfurization module layer are sequentially arranged in the desulfurization tower shell from bottom to top from the upper part of the rectification grid; each desulfurization module layer is provided with a plurality of calcium-based absorbent boxes; a plurality of loading and unloading doors in one-to-one correspondence with the desulfurization module layers are formed in the wall plate of the desulfurization tower shell.

The present invention discloses an underwater escape cabin with a pushing device, comprising a cabin, a hydraulic circuit and at least one valve; wherein: the hydraulic circuit comprises a water inlet and a water return port, the water inlet is arranged outside the cabin, and a hydraulic cylinder fixed to the cabin outside is arranged between the water inlet and the water return port, the hydraulic cylinder is used to push an external structure under the hydraulic drive outside the cabin to drive away the underwater escape cabin; the valve is arranged on the hydraulic circuit, and the valve is used to open the hydraulic circuit to drive the hydraulic cylinder. The underwater escape cabin with a pushing device provided by the present invention is driven by deep water pressure, does not require complex hydraulic and electric control systems, directly utilizes deep water pressure, adopts pure mechanical control, has low system complexity, and has the advantages of high reliability, simple and easy operation and maintenance, and low cost.

The application provides a computing power network system and a computing power processing method based on digital twinning, and relates to the technical field of communication.The system comprises a computing power management and control device, a computing power arrangement device, a computing network digital twinning body and a computing network infrastructure.The computing network digital twinning body is connected with the computing power management and control device, the computing power arrangement device and the computing network infrastructure respectively.The computing network digital twinning body is used for verifying and optimizing a computing power management and control scheme sent by the computing power management and control device, and outputting a computing power management and control optimization scheme.The computing network digital twinning body is also used for verifying and optimizing a computing power arrangement scheme sent by the computing power arrangement device, and outputting a computing power arrangement optimization scheme.The computing network infrastructure is used for executing at least one of the computing power management and control optimization scheme and the computing power arrangement optimization scheme sent by the computing network digital twinning body.

The utility model discloses an automatic laser soldering machine which comprises a machine frame, a working table is arranged on the machine frame, an assembly line assembly is arranged on the working table, a laser welding system is arranged on the upper portion of the working table, and the laser welding system comprises a tin feeding component, a laser component, a smoke suction component and a supporting component for fixing the tin feeding component, the laser component and the smoke suction component. The supporting part comprises a Q-axis connecting plate, and the tin feeding part, the laser part and the smoke suction part are all fixed to the Q-axis connecting plate. The smoke suction component comprises a smoke suction pipe support and a smoke suction pipe arranged on the smoke suction pipe support, and the smoke suction pipe is fixed behind the tin feeding component and the laser component through the smoke suction pipe support. According to the utility model, the tin feeding part, the laser part and the smoke extraction part are all fixed on the Q-axis connecting plate, so that the welding stability is ensured; and meanwhile, the smoke extraction part is located behind the tin feeding part and the laser part, so that the smoke extraction part moves along with the movement of the tin soldering position to ensure that the tin soldering smoke is completely extracted.

The invention discloses a purification system and method for removing conventional pollutants and antibiotic resistance genes in garbage penetrating fluid, and belongs to the technical field of sewage treatment.The purification system comprises a pre-sedimentation tank, a purification tank, a nanofiltration membrane module device, a clean water tank, a concentrated water tank and a backwashing system, and the upper portion of the pre-sedimentation tank is communicated with an adjusting tank through a conveying pipeline; the purification tank comprises a flocculation tank and an inclined plate sedimentation tank which are adjacently communicated, and the flocculation tank is communicated with the regulating tank through a conveying pipeline; the liquid inlet end of the nanofiltration membrane unit is communicated with an overflow pipe of the inclined plate sedimentation tank, the clean water tank is communicated with the water outlet end of the nanofiltration membrane unit, and the concentrated water tank is communicated with one water outlet end of the nanofiltration membrane unit; the backwashing system is communicated with the water outlet end of the nanofiltration membrane module and is used for backwashing the nanofiltration membrane module. According to the method, a flocculation process and a nanofiltration process are combined, the concentration of pollutants can be greatly reduced in the flocculation process, membrane pollution caused by the fact that a large number of pollutants enter a nanofiltration membrane is avoided, and removal of conventional pollutants and ARGs is enhanced in the nanofiltration process.

The utility model discloses an aluminum alloy underframe width rigid supporting device which comprises supporting rods and supporting seats, the supporting seats are arranged on the two sides of the supporting rods, the supporting rods comprise a first round steel supporting rod and a second round steel supporting rod, the supporting seats comprise a first supporting seat and a second supporting seat, and a hydraulic jack is connected between the first supporting seat and the first round steel supporting rod. The first round steel supporting rod is connected with the second round steel supporting rod through a screw rod, the second round steel supporting rod is connected with the second supporting seat, and nylon blocks are arranged on the outer sides of the first supporting seat and the second supporting seat; both the hydraulic jack and the screw rod in the device can be extended or shortened, the device can adapt to underframes with different width sizes, the universality of the device is ensured, the rigidity of the device is increased by adopting the round steel supporting rod and the jack, the shrinkage amount of the underframes can be counteracted when the underframes are welded and adjusted, the underframes are not prone to deformation, and the service life of the device is prolonged. Therefore, the width size of the underframe is ensured.

The present invention relates to an open type combined electrical appliance, comprising a base; a circuit breaker assembly installed on the base, comprising a circuit breaker bracket, a circuit breaker grounding terminal, a tank body, a circuit breaker support insulator, an external mutual inductor and a static contact of an isolating switch; an isolating switch assembly installed on the base, comprising an isolating switch bracket, an isolating switch grounding terminal, an isolating switch support insulator, a conductive bar, an isolating switch moving contact and a pull rod; a grounding rod is also arranged on the side of each circuit breaker support insulator matched with the isolating switch support insulator, and a grounding contact matched with the grounding rod is installed on the circuit breaker support insulator; each pull rod is driven by a first linkage mechanism to synchronously lift and lower, and each ground rod is driven by a second linkage mechanism to synchronously rotate. The combined electrical appliance of the present invention realizes the synchronous swinging of each pull rod and each ground rod respectively through the cooperation of the first linkage mechanism and the second linkage mechanism, which greatly reduces the number of required intermediate transmission rods, simplifies the structure, and makes the operation more convenient.

The present application relates to the technical field of fluorine-containing wastewater treatment, and specifically discloses a fluorine-containing wastewater coagulation-crystallization advanced treatment method and equipment, which comprises the following steps: sending fluorine-containing wastewater into a conditioning tank for water quality and quantity homogenization; sending the conditioned wastewater into a reconstruction section reaction tank, and then into a reconstruction section conditioning tank and a reconstruction section flocculation tank in sequence; introducing part of the first fluorine-containing sludge into a crystal fluorine recrystallization device, and then returning the activated sludge to the reconstruction section reaction tank; sending the supernatant into an induction section reaction tank; then into an induction section conditioning tank and an induction section flocculation tank in sequence, and finally performing solid-liquid separation in an induction section sedimentation tank; and monitoring the fluorine ion concentration of the effluent from the induction section sedimentation tank. The present application constructs a two-section gradient coupling treatment system of "reconstruction section rough fluorine removal + induction section fine fluorine removal", and innovatively integrates the "crystal fluorine recrystallization strengthening" and "exceeding standard backflow closed loop regulation and control" mechanisms.

The application discloses an intelligent circuit breaker embedded interface system based on Lvgl and relates to the technical field of power distribution systems.The system is sequentially configured as an application interface layer, a business adaptation layer, an Lvgl customization optimization layer, a device driving layer and a hardware abstraction layer along a data flow direction, and bidirectional data interaction and event linkage are realized through standardized interfaces of the layers.Through the adoption of a five-layer decoupling architecture and the collocation of standardized interfaces, the system realizes the deep decoupling of hardware, driving, GUI and business logic, greatly improves the portability, expandability and maintainability of the system, reduces platform adaptation and subsequent upgrade costs, effectively solves the resource conflict problem of GUI drawing and core business through the customization optimization of Lvgl, guarantees the hard real-time performance of the core business, simultaneously realizes the lightweight and scene-based operation of the interface system, and perfectly adapts to the application requirements of intelligent circuit breaker fault priority and operation and maintenance simplicity.

This invention discloses a thermal energy storage system for pumping large-flow-rate high-temperature molten salt, relating to the fields of solar thermal power generation, nuclear power, and thermal power energy storage. It includes a main molten salt storage tank, a stabilizing tank, a horizontal storage tank, a main circulating molten salt pump, and a salt-reducing temperature-regulating pump. The main molten salt storage tank is connected to the stabilizing tank via multiple pipelines. The outlet of the stabilizing tank is directly connected to the suction inlet of the main circulating molten salt pump via a pipeline equipped with an isolation valve and an air cooler, stabilizing the pump suction flow and enabling large-flow-rate molten salt pumping. The arrangement of one or more pipelines between the main molten salt storage tank and the stabilizing tank reduces the height of unusable molten salt in the main molten salt storage tank, saving costs. An air cooler is installed after the stabilizing tank to ensure safe isolation during isolation valve maintenance. This invention addresses the need for pumping large-flow-rate high-temperature molten salt in solar thermal power plants or nuclear power plants of 350MW or above, while also adapting to the requirements of long-term, uninterrupted low-speed pump operation.

The present invention relates to a tailwater artificial wetland treatment system and method for enhanced denitrification and phosphorus removal, which comprises a pre-pond, a micron aerated vertical submerged flow wetland, a vertical submerged flow wetland, a horizontal submerged flow wetland and a stabilization pond arranged in sequence; an immersion bioreactor is arranged in the pre-pond, an integrated air / water distributor is arranged at the bottom of the micron aerated vertical submerged flow wetland, a calcareous centimeter stone and a slow-release carbon source composite functional filler are arranged in the vertical submerged flow wetland, and a slow-release carbon source composite functional filler and a sulfur iron functional filler are arranged in the horizontal direction in the horizontal submerged flow wetland. The system first performs preliminary purification, and then performs heteroaerobic denitrification and autoaerobic denitrification in deep purification, and simultaneously enhances phosphorus removal. It has the advantages of reasonable structural design, uniform water distribution and water collection, strong synchronous denitrification and phosphorus removal capabilities, and good winter operation effects, and significantly improves the denitrification and phosphorus removal capabilities and self-repair capabilities of the tailwater artificial wetland system, and has the advantages of ecological naturalness, high efficiency and stability, simple maintenance, and economical and practical.

This invention discloses a multi-terminal network audio broadcasting system, belonging to the field of audio broadcasting technology. It includes a central server and multiple distributed audio terminals. The central server comprises: a geographic information module for storing digital elevation models and the deployment locations of each audio terminal; an adaptive coding module for dynamically adjusting the redundancy coding rate of the audio stream based on link quality feedback reported by each audio terminal; and a routing calculation module for generating a multi-hop broadcast tree based on a terrain-compensated propagation loss model. Each audio terminal includes a positioning module for collecting its real-time geographic coordinates and reporting them to the central server. This invention achieves accurate path loss calculation, adaptive redundancy coding, dynamic power adjustment, intelligent broadcast tree construction, efficient packet loss recovery, and dynamic relay coverage, improving the coverage, stability, and energy efficiency of audio broadcasting.

The utility model relates to the technical field of wastewater treatment, in particular to a recycling defluorination crystallization device, which comprises a reaction tank body, a water outlet area, a settling area, a water inlet area, a mixing area, a stirring component, a first-stage reaction area and a second-stage reaction area. The method is suitable for all medium-high-concentration fluorine-containing wastewater, the effluent quality is excellent, the fluoride concentration can be lower than 1mg / L at the minimum, fluorine resources of incoming water can be fully utilized, waste is turned into wealth, fluorine-containing sludge is not generated, economic benefits can be generated, and the problems that a traditional fluorine removal process is large in agent dosage, large in sludge yield, and whether the sludge is hazardous waste or not needs to be identified are solved; and the process has the advantages of small agent dosage, high facility integration level, small occupied area, reduction of the operation cost of a sewage plant and simplicity in operation and maintenance, not only solves the problem of fluorine pollution of the fluorine-containing wastewater, but also can solve the problem of fluorinated sludge treatment, and has certain popularization value.

The invention provides a water-saving fermentation tank temperature control system based on circulating spraying, which comprises a fermentation tank unit comprising at least one fermentation tank, the top end of the fermentation tank is fixedly provided with an annular sprayer, and the outer wall of the lower end of the fermentation tank is provided with an annular water collection tank with an upper opening; the cooling water filtering unit comprises a cooling water filtering tank, an outlet of the water outlet pipeline of the annular water collecting tank is located on a water inlet of the cooling water filtering tank, a non-contact liquid level sensor is arranged on the side wall of the upper end of the cooling water filtering tank, and a clear water outlet is formed in the lower end of the cooling water filtering tank; the cooling water storage unit comprises a heat preservation water storage tank, a refrigeration jacket is arranged on the outer wall of the heat preservation water storage tank, a clear water outlet of the cooling water filter tank is connected with a water inlet of the heat preservation water storage tank through a first pipeline, and a water outlet of the heat preservation water storage tank is connected with an annular sprayer through a heat preservation pipeline. And a refrigerating unit is mounted between the inlet and the outlet of the refrigerating jacket. The temperature control device has the advantages of low cost, rapid and accurate temperature control, energy saving, water saving and the like.

The present invention provides an integrated air-conditioning system, which belongs to the technical field of air-conditioning, and comprises: a heat dissipation device, a first pipeline, a second pipeline and a first heat exchanger, wherein the first side of the first heat exchanger is suitable for being connected to the pipeline of the first water return end; the second side of the first heat exchanger is suitable for being connected to the pipeline of the second water inlet end; the first water return end is used to cool the pipeline of the second water inlet end through the first heat exchanger; thereby, the secondary utilization of energy is achieved and energy waste is avoided, and the scheme performs reasonable energy distribution and secondary utilization of energy for systems with different needs, and the system integrates different independent systems together, which can simplify the design, construction, operation and maintenance of the system and other steps.

The utility model discloses a rapid switching device for a large flue. The shell (1) is a square cavity assembly formed by welding a front plate (13), a rear plate (14), a side plate (15), an upper cover plate flange (16) and a lower cover plate flange (17); the shell (1) is connected with a large process flue through a flue connecting pipe (2); a blocking plate (3) is arranged in the square cavity, is a movable plate and is formed by welding a blocking blind plate (31), a lifting lug (32) and a reinforcing rib (33); a supporting positioning rod (5) is arranged at the bottom of the square cavity, penetrates through the front plate (13) and the rear plate (14) and is welded with the front plate (13) and the rear plate (14) in a sealing manner; and a compression bolt (4) is arranged on the rear plate (14). The device has the outstanding characteristics of simplicity and high efficiency in operation and maintenance, high sealing performance and safety, low failure rate, low manufacturing cost and the like.

The invention relates to an automatic discovery and link construction technology of network equipment applied to equipment management and network operation and maintenance in an optical network, in particular to automatic sniffing, equipment identification, link construction and topology generation of PON (Passive Optical Network) equipment realized through a remote TELNET protocol. The method comprises the following steps: S.1, obtaining PON equipment information based on a TELNET protocol; s.2, automatic sniffing and link construction of the ONU are carried out; and S.3, visualizing the network topology. Through the TELNET protocol-based instruction library, OLT and ONU equipment of different manufacturers can be supported, the limitation that a traditional PON network management system only supports equipment of a single manufacturer is broken through, and automatic sniffing and interconnection of multi-brand equipment are realized; according to the invention, the PON equipment can be automatically identified and the link relationship can be constructed, the complexity and error rate of traditional manual configuration are reduced, the automation level of equipment management is improved, and the cost and time of manual intervention are remarkably reduced.

This application provides a cloud platform storage system, method, device, and medium, relating to the field of cloud platform technology. The cloud platform storage system includes a compute node cluster and a storage node cluster. The compute node cluster includes multiple compute nodes, and multiple disks on these nodes constitute a MinIO object storage cluster for storing image resources and / or cloud disk backup resources. The storage node cluster includes multiple storage nodes, and multiple disk arrays on these nodes constitute an NFS storage cluster for storing cloud disk resources. The compute node cluster stores cloud disk resources in the NFS storage cluster through a cloud disk service, stores cloud disk backup resources in the MinIO object storage cluster, and stores image resources in the MinIO object storage cluster through an image management service. This approach meets the storage needs of users in small- to medium-sized cloud platform usage scenarios while reducing the complexity of system deployment and lowering the operation and maintenance costs of using the cloud platform.

The present invention discloses a cross-domain zero-trust authentication system for a cloud-edge-end integrated power information communication system, including a cloud resource navigation server and a number of mutually isolated trust domains; each of the trust domains includes a policy center and an agent gateway; a physical resource access channel is constructed between the agent gateways of the trust domain with resource access services; a zero-trust authentication channel is constructed between the policy centers of the trust domains participating in distributed authentication; the policy center runs on the edge side; a domain judgment module, a local domain authentication module, a cross-domain authentication module, and a behavior log recording module are deployed in the policy center. The present invention can realize zero trust by adopting a cloud-edge-end integrated architecture, can give full play to the advantages of cloud data sharing, rich edge-side computing resources, and convenient terminal-side access methods, etc., to perform targeted distributed authentication on resource requests, is easy to deploy, has strong compatibility, does not need to rely on the instant management of registered users, and has good user experience.

The present application belongs to the technical field of water treatment equipment, and in particular, relates to an adjustable reflux device suitable for sewage integrated wastewater treatment equipment, including a pool body, wherein a partition is arranged inside the pool body, and the partition divides the inside of the pool body into different functional areas. The device also includes a flow regulating mechanism, and the flow regulating mechanism can adjust the flow and proportion of water entering different functional areas. The use of this reflux device can save space and adjust the reflux volume as needed. When the water intake of the integrated equipment is low, the water circulation flow can be ensured to reduce the space occupied by the original equipment, so that the equipment space can be efficiently utilized, which is conducive to the bacterial flora in the adjustable reflux device of the present application being in the best state, and is conducive to the adjustable reflux device of the present application to achieve good ammonia nitrogen and COD removal effects, and can make the equipment run efficiently. The equipment of the present application will have a wide range of uses in the field of environmental protection equipment.

The present invention relates to the technical field of sewage treatment, and discloses a deep well autotrophic enhanced denitrification system based on a low carbon-nitrogen ratio sewage treatment plant, comprising a deep well reaction tank, a filler unit and a gas device, wherein a partition is installed in the deep well reaction tank perpendicular to the horizontal plane, and the deep well reaction tank is divided into a water inlet chamber and a water outlet chamber by the partition; the water inlet chamber and the water outlet chamber are both provided with filler units, and the filler units can move in their respective chambers; the gas device is arranged outside the deep well reaction tank, and the gas device is connected to the deep well reaction tank through an air outlet pipe to transport gas to the bottom of the deep well reaction tank for auxiliary stirring, and the gas device is connected to the deep well reaction tank through an air inlet pipe to collect the gas generated by the deep well reaction tank to the gas device. The present invention can achieve efficient denitrification effect for low carbon-nitrogen ratio sewage without adding an external carbon source, and has the characteristics of high denitrification efficiency, small footprint, fast construction, simple operation, and small impact of the construction process on the surrounding environment.

The invention discloses a system and an implementation method based on load balancing and port aggregation, and belongs to the technical field of communication, and the system comprises a load balancer which is responsible for receiving a client request and distributing the request to a back-end server according to a certain algorithm; the link aggregation controller is used for managing data flows among the plurality of physical ports and realizing link redundancy and load sharing; and the back-end service layer is composed of a plurality of servers. Requests are distributed to a plurality of back-end servers through the load balancer, the continuity of the whole service is not affected even if a certain server breaks down, meanwhile, link redundancy is achieved through the link aggregation technology, the system can continue working through other links even if a certain physical link fails, and the service efficiency is improved. And the stability and the reliability of the system are greatly improved.

This invention discloses a low-temperature sterile nanofiltration membrane treatment process for high-quality direct drinking water, mainly comprising: tap water, which passes through a delivery pump and a precision filter, and enters a nitrogen-sealed inlet tank; a vacuum system expels air from the nanofiltration (NF) membrane treatment system; a nitrogen generation system produces nitrogen gas with 99.5% purity, which is independently controlled by valves to replenish nitrogen gas to the nitrogen-sealed inlet tank, the NF membrane treatment system, and the NF membrane direct drinking water tank; after the nitrogen purity in the NF membrane treatment system meets the standard, the NF membrane treatment system is turned on, and the NF membrane permeate enters the NF membrane direct drinking water tank, passes through a nano-silver sterilization device, and is then transported to the end user by an external pump; the NF membrane concentrate is discharged into a rainwater well or a sewage well through an NF membrane concentrate discharge pipe. The high-quality direct drinking water nanofiltration membrane treatment process provided by this invention has the following advantages: the process is safe and reliable, improves the taste of NF membrane direct drinking water, reduces NF membrane fouling, and is easy to maintain.