1752results about How to "Guaranteed treatment effect" patented technology

The invention provides a real-time monitoring system for a software system. The monitoring system is configured in a software system server and used for collecting log information generated by operation of the software system. The monitoring system comprises a log collecting module, an information system, a streaming type computing platform, a data storage module, an alarm module and a configuration management module. The log collecting module is used for screening and processing generated logs in real time and transmitting the logs selected to be monitored and alarmed to the information system; the information system is used for receiving the monitored logs transmitted by the log collecting module, and transmitting the logs needing to be monitored and alarmed to the streaming type computing platform according to a route rule; the streaming type computing platform is used for processing the logs one by one in a streaming data processing mode, and judging whether to need to record, alarm or notify the abnormal alarm situation to a related principal of the system according to log alarm levels; the data storage module is used for processing data information generated in the real-time monitoring process persistently and namely storing the data information into a database or a file system.

The invention relates to the field of cloud storage, and discloses a method and a device for data synchronization based on a cluster server system. The method comprises the steps of dynamically electing a master node, and notifying the master node to process in a cluster after worker nodes receive a task, thereby effectively ensuring the data consistency, avoiding mutual exclusion and synchronization between processes of the nodes at the same time, and reducing the system overhead. According to the invention, the cluster server system comprises at least one cluster, the cluster comprises at least three nodes, and the method for data synchronization based on the cluster server system comprises the steps that one node in the cluster is dynamically elected as the master node, and the other nodes act as the worker nodes; if the worker nodes receive a task request, the other nodes in the cluster are notified to process the task; each of the other nodes in the cluster judges whether the node itself is the master node or not after receiving the notice; and if the node is the master node, the master node processes the task and feeds back a processing result.

The invention relates to a distributed vision computing method based on an open type Web Service framework. The method has the technical scheme of: collecting the video image of an identified target by adopting an embedded video collecting front end, and sending the video image back to a data center through network multicast; a computing server is controlled by a control server in the data centerto accomplish the computing task, and carrying out the uncompressing, target detecting, image preprocessing, feature extraction, identification, classification and result drawing of video data; and integrating the computing results. The method solves the defect of difficult compatibility with other systems. Under the uniform scheduling of the control server, the method avoids a great deal of unnecessary matching calculation, improves the performance of system operation, achieves the compatibility with most of databases and simply updated external systems, and realizes the identification and calculation of large-scale databases by adopting a packet mode.

The invention provides a construction site intelligent safety supervision system and a control method thereof. The system comprises a site access control device, a safety fence device, a device control terminal, a smart tower and a remote server, wherein the intelligent tower is used for realizing construction site panoramic view monitoring, construction on-site sound collection, odor collection,on-site lighting and voice broadcast and realizing sound-light alarm under abnormal circumstances, and the remote server is in communication connection with the intelligent tower, the safety supervision terminal and an intelligent reporting terminal through a mobile communication network and transmits corresponding data to a safety supervision management center through an Internet network. With the construction site intelligent safety supervision system and the control method thereof of the invention, the image information and environmental information of a construction site can be acquired inreal time; the unified control of construction workers and construction equipment can be realized; auxiliary lighting can be realized; alarm prompts can be given out when an abnormal condition occurs, and the abnormal condition is reported to the a safety monitoring management department; and actual all-round and no-dead-corner safety supervision can be realized.

The invention relates to an ecological slope protection type sewage land infiltration system which comprises a grid pond (2), an anaerobic hydrolyzing pond (4) and a stepped land infiltration unit which are sequentially arranged along the gradient of a sloping field from top to bottom, wherein the grid pond (2) is communicated with a ditch (1); the stepped land infiltration unit comprises multilevel slope protection infiltration beds (5); filter materials (7) are filled in the slope protection infiltration beds (5); hygrophyte communities (9) are cultivated on the slope protection infiltration beds (5); a modal conversion assembly (6) used for controlling infiltration speed, waterpower retention time, a filtering layer internal environment and an effluent water mode is arranged between adjacent slope protection infiltration beds (5). The ecological slope protection type sewage land infiltration system disclosed by the invention tolerates the rural sewage quality water flow impact, is difficult to block due to high reaeration capacity, intensifies the denitrification and dephosphorization effect, is green, energy-saving, economic and practicable and has excellent water conservancy and ecology value.

The invention provides equipment and a method for treating nondegradable wastewater by utilizing catalytic oxidation of ozone. The equipment comprises a feeding system, an ozone catalytic reaction tower and a spray absorbing tower; the feeding system comprises a wastewater pH regulation device, a wastewater feeding pipeline, a hydrogen peroxide aqueous solution feeding pipeline, an ozone feeding pipeline and a pH regulator feeding pipeline; the wastewater pH regulation device is communicated with the wastewater feeding pipeline and the pH regulator feeding pipeline respectively; the ozone feeding pipeline is communicated with the wastewater feeding pipeline; the ozone catalytic reaction tower is communicated with the wastewater feeding pipeline and the hydrogen peroxide aqueous solution feeding pipeline respectively so that wastewater undergoes once catalytic reaction in the presence of a first catalyst to generate a liquid flow and an ozone tail gas flow which are subjected to initial treatment; and the spray absorbing tower is communicated with a catalytic reaction system, is used for spraying at least one part of the liquid flow which is subjected to the initial treatment, and is contacted with the ozone tail gas flow in the presence of a second catalyst to undergo second catalytic reaction.

The invention discloses a method for treating landfill leachate, which orderly comprises flocculation precipitation pretreatment, hydrolysis pre-acidification treatment, anaerobic treatment, aerobic treatment comprising shortcut nitrification-denitrification and secondary nitrification-denitrification, membrane separation treatment and oxidation flocculation treatment. The method has the advantages of having higher removal rate of ammonia nitrogen and lower energy consumption, realizing the up-to-standard discharge of leachate concentrated solution, ensuring sound operation of the whole system, greatly lowering the oxidation-reduction potential in the anaerobic reaction, and improving the anaerobic treatment effect, thereby making the landfill leachate fully meet the first-level discharge standard of the Integrated Wastewater Discharge Standard.

The invention relates to the technical field of sewage treatment and particularly relates to an A3 / O-MBBR (Moving Bed Biofilm Reactor) integrated sewage treatment device and an A3 / O-MBBR integrated sewage treatment method. According to the device provided by the invention, a sewage backflow mechanism, a nitrification liquor backflow mechanism and an anaerobic liquor backflow mechanism are arranged and suspended filler is filled in an aerobic tank, so that the integrated sewage treatment device has a good effect for treating nitrogen and phosphorus in sewage and is high in treatment efficiency, compact in structure and small in occupied area. In addition, by virtue of optimizing a settling pond structure in the integrated sewage treatment device, the settling effect of the settling pond is improved, and the sludge floatation phenomenon and the content of suspended solids in effluent can be remarkably reduced. After sewage is treated by the integrated sewage treatment device provided by the invention, the effluent can reach the level A of first class stand of pollution discharge standard for municipal sewage treatment plant (GB18918-2002).

The present invention discloses a multi-camera in-loop simulation test method facing panoramic vision perception. The method comprises the steps of: establishing a target traffic scene model by employing an industrial personal computer, collecting panoramic image data by a camera, uploading the panoramic image data to a display screen, performing location parameter calibration of the camera by employing a sensor calibration module, performing feature point detection and matching and retaining effective matching pairs to complete image stitching and fusion, employing a target panoramic perception algorithmic routine to perform vision perception of the environment around a vehicle in real time, and finally, performing comparison and verification of the perception result obtained through thepanoramic perception algorithm and all the panoramic image data of virtual modeling to analyze the panoramic perception algorithm to obtain an in-loop simulation test estimation result. The multi-camera in-loop simulation test method facing panoramic vision perception generates a target panoramic image based on a virtual scene, the system provided by the invention comprises complete virtual traffic scene information to automatically perform image real information and perception information verification to perform estimation so as to greatly reduce human cost, consider the human marking errorsand improve the accuracy of estimation of the perception information result.

The invention discloses a method for fast forwarding and fast rewinding a video stream, which comprises the following steps: analyzing a source video file and acquiring an index file comprising each I frame index information; when a fast forwarding or fast rewinding request is received, executing the following steps: a. positioning the current playing time of the video stream; b. inquiring the index file to acquire the index information of the current I frame proximal to the current playing time; c. utilizing the fast forwarding or fast rewinding multiple and the index information of the current I frame to determine the number NF of the I frames to be skipped; d. for the fast forwarding request, skipping NF numbered I frames backwards; for the fast rewinding request, skipping NF numbered I frames forwards; e. inquiring the next I frame from the index file, and according to the information of the I frame recorded in the index file, acquiring the real data of the I frame from a primary file and playing the real data of the I frame; and repeatedly executing the steps d-e until the last I frame of the index file is processed or other processing requests are received. The invention effectively solves the problems of waste of bandwidth and unstable code rate.

The invention discloses a satellite attitude control semiphysical simulation system based on a multi-target machine. The satellite attitude control semiphysical simulation system comprises a real-time positioning sub system, an attitude measurement sub system, an attitude control comprehensive processing system, an execution mechanism, a signal conditioning box, a target machine, a working computer and a display system, wherein the real-time positioning sub system acquires real-time position information of a satellite; aiming at different working modes of the satellite during orbit flying, the attitude measurement sub system acquires real-time attitude information of the satellite; the attitude control comprehensive processing system manages all attitude measurement components and the execution mechanism; the target machine performs attitude calculation and torque calculation according to acquired real-time position information and the acquired attitude information and sends control information to the execution mechanism; and the execution mechanism sends actual execution information back to the target machine through the signal conditioning box, acquires the real-time attitude information of the satellite through dynamics and sends the attitude information to the attitude measurement components. The satellite attitude control semiphysical simulation system has high simulation instantaneity, high fault-tolerant capability and high integration degree and has great instructional significance for design and development of satellite attitude control systems.

The invention relates to a picture processing method, which comprises the steps of: acquiring a to-be-processed image, dividing the to-be-processed image into a plurality of sub-image blocks, calculating a module gradient value corresponding to each sub-image block, and classifying the sub-image blocks into corresponding target module classes in a module class set according to the module gradientvalues, and performing super-resolution processing on the sub-image blocks according to image processing algorithms corresponding to the corresponding target module classes, wherein the module classesin the module class set correspond to different module gradient value ranges, and the greater the module gradient values contained in the module gradient value ranges corresponding to the module classes are, the higher the definition of the sub-image blocks obtained through processing by adopting the corresponding image processing algorithms is; and splicing the processed sub-image blocks according to positions before segmentation to obtain a target image. The picture processing method can satisfy the real-time display requirement of users while ensuring the processing effect. In addition, the invention further discloses a picture processing device, computer equipment and a storage medium.

The invention discloses a low-oxygen aerating control device and method of segment inlet A / O biological denitrifying technique, which contains three control circuits, wherein the first and second circuits adopt DO cascade PI control system; the third circuit uses higher-precision ammonia nitrogen feedforward-feedback control system, which gathers DO density, ammonia nitrogen density of aerobic area and ammonia nitrogen density of last anoxybiotic area to reflect the change of inlet load.

The invention provides a method for treating organic waste gas by combining photocatalysis and microorganisms. Simultaneously, the invention also discloses a device of the method for treating the organic waste gas by combining the photocatalysis and the microorganisms and application thereof. The method for treating the organic waste gas by combining the photocatalysis and the microorganisms comprises the steps of physical dust removal, photocatalyst catalytic oxidation, microorganism purification, and the like, and can effectively eliminate total suspended particulate matters in the organic waste gas and volatile organic compounds in waste gas. The device of the method for treating the organic waste gas by combining the photocatalysis and the microorganisms is applied to treating industrial organic waste gas, and is particularly applicable to treating the organic waste gas in various industrial organic waste gas emission workshops.

The invention discloses a device for realizing protection switching in a WDM PON, a system and a method therefor, and the device relates to an OLT and an ONU. The device comprises a PON service access module, a protection switching control module and a standby PON service access module, wherein the PON service access module is used for detecting optical signals of accessed service and informing the protection switching control module when a communication optical fiber arranged between the OLT and the ONU has failure; the protection switching control module is used for sending protection switching notification message to the standby PON service access module so as to inform that the service is switched into the standby PON service access module from the primary PON service access module; and the standby PON service access module is used for sending the protection switching notification message to the ONU (OLT). When detecting optical fiber failure at the side of the OLT (ONU) and carrying out protection switching, the invention can inform the side of the ONU (OLT) to have the protection switching in time, thus realizing the protection for a full-service optical fiber between the OLT and the ONU and ensuring the normal transmission of the service.

The invention provides a secondary separation cyclone which is mainly used for solving the problem that the existing cyclone separator has a poor effect on separating small oil drops. The secondary separation cyclone is characterized in that: the lower end of a first-grade cyclone pipe is sequentially connected with a second-grade cone section and a second-grade underflow pipe; a cyclone separator is fixed in the cyclone pipe and is formed by connecting a second-grade overflow pipe, a second-grade overflow cone section, a spiral sheet fixing pipe and a second-grade liquid collecting port; a diversion spiral sheet is fixed outside the spiral sheet fixing pipe, and the contour of the diversion spiral sheet is in contact with the inner wall of the first-grade cyclone pipe; a first-grade overflow pipe is connected outside the second-grade overflow pipe, and an annular gap is formed between the two pipes so that a medium in a first-grade cyclone cavity overflows along the annular gap; and the straight pipe length of the first-grade overflow pipe is less than the straight pipe length of the second-grade overflow pipe, both the first-grade overflow pipe and the second-grade overflow pipepenetrate through an upper end cover, and the outer wall of the first-grade overflow pipe is in closed connection with a corresponding hole of the upper end cover. The separation cyclone can increasethe separation efficiency of small oil drops and can realize secondary separation.

The invention relates to coal tar processing wastewater treatment method and system. The treatment method comprises materialization treatment comprising the following steps of: (1) removing free oil and emulsified oil which are contained in wastewater, filtering, regulating the pH value of the wastewater to 3-4, and then separating out depositions; (2) extracting and dephenolizing; (3) regulatingthe pH value of the dephenolized wastewater to 9-10, filtering, then carrying out steam stripping and deaminization by using steam, and besides, carrying out reextraction on extract phase containing phenol to respectively recover an extracting agent and phenate, and then recycling the extracting agent and decomposing the phenate to obtain crude phenol; and (4) cooling the deaminized wastewater, regulating the pH value to 7-8, and then filtering after adding a desulfurizing agent to remove sulfides. The water quality of the materialized wastewater achieves the requirement of a biochemical treatment system; meanwhile, the invention can recover a given amount of useful matter comprising the phenol, ammonia and the like and make the extracting agent recycled so that the economic benefit of wastewater treatment is improved.

A reverse osmosis concentrated water treatment method comprises the following steps: (1) adopting multi-phase catalytic oxidation technique to achieve deep oxidation and maximally remove organic pollutants in wastewater; (2) adding the effluent after catalytic oxidation into an adsorption reaction tank, in which a proper amount of powdered active carbon is added, and fully reacting for a period of time by aeration or stirring and the like to adsorb organic pollutants in the wastewater, wherein the adsorption effect depends on the addition amount of the powdered active carbon; and (3) filtering the effluent after the adsorption reaction by submerged ultrafiltration to further improve the quality of the effluent, which can be discharged directly. According to the reverse osmosis concentrated water treatment method, the oxidation reaction time can be reduced and the oxidation reaction effect can be enhanced at the same time, and not only can the wastewater treatment effect be ensured but also the treatment cost is greatly lowered when the method is in combination with the powdered active carbon adsorption process. In addition, the method has the advantages of simple process flow and high operability, and is worth popularizing.

The invention discloses a sewage treatment method and a system in ecological sensitive areas. The method comprises the following steps: larger suspended matters in sewage are removed by using a collecting well the inlet of which is provided with a mechanical coarse screen, the treated sewage enters a pretreatment tank, the suspended matters are further removed by the coarse screen, animal and vegetable oils and mineral oils are removed by an oil separator, and the retreated sewage enters a regulating reservoir to equalize the water quantity and water quality; the pretreated sewage enters an anaerobic tank to be mixed with backflow mixed liquor from an anoxic tank; effluent from the anaerobic tank and the backflow mixed liquor from a membrane pool are mixed to enter the anoxic tank, and effluent from the anoxic tank enters an aerobic tank; effluent from the aerobic tank enters the membrane pool to be biodegraded; and the effluent is filtered by membranes. By adopting an anaerobic-anoxic-aerobic-MBR mode, the invention has higher treatment efficiency and stability and can effectively remove COD, BOD, TN, TP and oils in the sewage; and the effluent meets first grade A emission requirements, and can be used as a reuse water source, thereby protecting the environment and saving the water resources. The invention is especially suitable for treating rural domestic sewage and catering wastewater in the ecological sensitive areas.

The invention discloses a technology for constructing deepwater bridge underwater pier large-diameter bored piles in bead-stringed type karst areas. A pile foundation of a constructed underwater pier comprises the multiple first bored piles, and the first bored piles all penetrate through a plurality of karst caves successively from top to bottom. The technology includes the steps of (1) numbering the karst caves, (2) grouping the bored piles: dividing the multiple first bored piles into multiple groups according to serial numbers of the karst caves which are penetrated from top to bottom, and enabling the karst caves which are penetrated by all first bored piles in the same groups from top to bottom for the first time to be the same, (3) determining the drilling starting sequence: determining the drilling starting sequence of all first bored piles in the same group in the step (2), and enabling the drilling starting time of the first bored piles, farther away from the middle of the karst cave penetrated for the first time, in the same group to be earlier, and (4) carrying out drilling construction. The technology is simple in step, reasonable in design, low in investment cost, convenient to achieve and good in construction effect, and large-diameter bored pile construction processes can be easily, conveniently and rapidly completed with low cost and high quality.

The invention provides a method treating circulating water having light oil leaked therein. The method comprises a) adding an oxidation-type bactericide; b) adding an anti-scale corrosion inhibitor which contains at least one organic phosphonic acid, at least one organic carboxylic acid polymer, an optional copper material corrosion inhibitor and an optional zinc salt; and c) adding at least one polyethylene oxide non-ionic surfactant. The inventive method can remove oil and detach slime from equipment of a circulating water system in one step, without requiring discharge of a large amount of sewage.

The invention discloses a micro electrical discharge pulse power source. The micro electrical discharge pulse power source comprises a power factor correction converter, a DC-DC converter, a power loop, a driving circuit, a pulse generator and a detection circuit, wherein the power loop comprises 6 switch tubes Qp, Q1, Q2, Q3, Q4 and Qoff and one inductor Llimit, the four switch tubes Q1-Q4 are connected in a bridge structure, the switch tube Qp is connected with an output side of the DC-DC converter and an input side of a full-bridge converter, after the switch tube Qoff is in parallel connection with a gap, one end of the switch tube Qoff is connected with a center point of a bridge arm through the inductor Llimit, and the other end is directly connected with a center point of another bridge arm. The invention further comprises a segmental control method based on the micro electrical discharge pulse power source. The micro electrical discharge pulse power source is advantaged in that only one power loop is comprised, the structure is simple, the volume is small, switching of voltage control and current control is carried out in a set of power loop through the corresponding segmental control method, voltage control and current control are mutually independent, and fast switching and precise and stable control can be realized.

The invention belongs to the field of lithium batteries, and discloses a pre-lithiation method for lithium metal negative electrode protection, which is characterized by comprising the steps of: (1) coating an organic polymer thin film on the surface of a current collector; (2) assembling the current collector coated with the organic polymer thin film, a lithium sheet, a diaphragm and an electrolyte into a battery to perform discharge treatment, and depositing metal lithium on the surface of the current collector; (3) and taking out the current collector on which the metal lithium is deposited, thereby acquiring a negative electrode material having a protective film on the surface and capable of being applied to a lithium metal battery. The metal lithium negative electrode prepared by adopting the pre-lithiation method disclosed by the invention can inhibit the generation of lithium dendrites, and on the other hand, the protective film formed in situ can prevent the lithium metal fromreacting with the electrolyte to produce fixed lithium, can effectively solve the phenomenon of lithium dendrites generated by uneven deposition of a conventional metal lithium negative electrode during the cycling process, and can effectively solve the phenomenon of reducing cycle performance due to the fixed lithium generated by the reaction of the lithium metal negative electrode with the electrolyte.

The invention provides a corrosion and scale inhibitor for industrial circulated cooling water, which is applicable to a composite for mitigating metal corrosion added into a water body with ultra-low hardness, low alkalinity and strong corrosiveness. The corrosion and scale inhibitor is characterized by comprising the following compositions in percentage by weight: 5 to 20 percent of 2-hydroxyphonoacetic acid, 5 to 25 percent of 2-phosphonobutane-1, 2, 4 - tricarboxylic acid, 10 to 40 percent of acrylic acid-2-acrylamido-2-methylpropane sulfonic acid copolymer, 1 to 8 percent of zinc chloride, 1 to 5 percent of copper corrosion inhibitor, and the balance being water. The corrosion and scale inhibitor has lower contents of inorganic phosphorus and zinc salt, can prevent scale sedimentation of medicine on one hand, and can reduce eutrophication of the water body and heavy metal pollution on the other hand, thereby facilitating the environmental protection.

The invention discloses a composite material coated with a SiC-Fe based alloy layer and a preparation method of the composite material. The composite material coated with the SiC-Fe based alloy layer is formed by coating the SiC-Fe based alloy layer on the surface of a steel base material, wherein the steel base material is carbon steel or alloy steel of which the carbon content is 0.2 to 0.7 weight percent, and the raw material of a SiC-Fe composite material layer is SiC powder and iron-based autolytic alloy powder. The preparation method of the composite material comprises the following steps of: mixing the iron-based autolytic alloy powder with the SiC powder; and spraying the mixture on the surface of the steel base material. The composite material coated with the SiC-Fe based alloy layer has excellent performances of high hardness, good wearing resistance, low brittleness, capability of being subjected to heat treatment and machining, low cost, high performance price ratio and the like, and can obviously improve the surface property of the steel base material.

The invention relates to a pharmaceutical chemical wastewater treatment device and a treatment method thereof. The treatment device comprises a vertical flow type coagulative precipitation tank, a catalysis zero valence bimetallic packing tower, a Fenton-like reactor, an anaerobic MBBR (Moving Bed Biofilm Reactor) pool, an aerobiotic MBBR pool and a solid-liquid seperation system which are sequentially connected. The treatment method is a catalysis zero valence bimetallic- Fenton-like-MBBR coupling treatment method. The treatment device has the advantages of being capable of simultaneously treating multiple organic pollutants, occupying a small area and being simple in structure and easy for finalization and industrialization. The catalysis zero valence bimetallic packing tower enables the performance of reducing and treating degradation-resistant organic matters to be stronger, does not harden after running for long-term and is suitable for a wide pH value range and low in operating cost, and the consumption of metallic iron is little. The Fenton-like reactor is faster in oxidation reaction rate and suitable for the wide pH value range. The pharmaceutical chemical wastewater treated by the wastewater treatment method provided by the invention can reach the new emission standard of wastewater in a pharmaceutical chemical industry.

The present invention relates to a cable traction automobile coating conveyor. The conveyor comprises two functional parts of a walking mechanism and a hoisting and flipping mechanism, wherein the walking mechanism is provided for completion of walking and conveying of the conveyor, and the hoisting and flipping mechanism comprises two linear guide mechanisms and a hoisting connection rod. According to the present invention, the cable traction drives the hoisting and flipping mechanism to complete the hoisting and / or flipping movement of the conveyed object; the movement of the walking mechanism is combined with the movement of the hoisting and flipping mechanism to drive the automobile to perform forward and backward movement, hoisting and tilting movement, flipping movement or the composition of the above movements; the whole weight of the conveyor is reduced, and the space utilization efficiency in the vertical direction is improved; and the dual guide rail and the linear guide mechanism are adopted so as to increase the stiffness and the stability of the conveyor.

The invention discloses a spliced display concurrent processing system, comprising a desktop processor, at least one signal receiving processor and at least one superposition selecting circuit; an output end of the desktop processor and an output end of the signal receiving processor are respectively connected with an input end of the at least one superposition selecting circuit. The signal receiving processor receives and transfers input video images to the superposition selecting circuit after a display processing, the superposition selecting circuit performs a superposition processing to the received video images in accordance with location superposition information transmitted by the desktop processor, and then transmits the video images to a corresponding display unit for output. Various parts of the inventive spliced display concurrent processing system do not occupy scarce computer resources mutually, which fully guarantees respective processing abilities of the desktop processor, the signal receiving processor and the superposition selecting circuit, such that the inventive spliced display concurrent processing system can run effectively, process at the rapid rate, has high refresh rate and lower development cost, maintenance cost and update cost.

The invention discloses a manufacturing method of a vermicular cast iron piston ring. The material of the vermicular cast iron piston ring comprises the following chemical components in percentage by weight: 3.4-4.0% of C, 2.4-3.2% of Si, not more than 0.3% of Mn, 0.2-0.4% of Cr, 0.2-0.6% of Mo, 0.5-1.0% of Cu, 0.05-0.15% of Ti, not more than 0.1% of P, not more than 0.05% of S, 0.009-0.02% of Mg and the balance of Fe and inevitable impurities. The manufacturing method of the vermicular cast iron piston ring comprises the following technical steps of moulding, smelting, casting, shaking out, shot blasting, mechanical processing, surface treatment and the like. By adopting the manufacturing method disclosed by the invention, the thinning of the piston ring is achieved, the production process is relatively simple, and the manufactured vermicular cast iron piston ring is high in elasticity, strength, toughness and wear resistance.

The invention provides an AALOO multipoint water feeding synchronization denitrification and dephosphorization process. All pretreated wastewater Q1 enters an anaerobic tank, then flows through an anoxic tank, a low oxygen tank, a short-term aerobic tank and a precipitation tank sequentially, and then is discharged from the precipitation tank. Partial pretreated wastewater Q2 directly enters the low oxygen reaction tank, then flows through the short-term aerobic tank and the precipitation tank sequentially, and then is discharged from the precipitation tank. One part of precipitated sludge flows back to the anaerobic tank, and the other part of the precipitated sludge is discharged from the precipitation tank as excess sludge. Mixed liquid return channels are arranged between the low oxygen reaction tank and the anoxic tank, and the mixed liquid return channels are also arranged between the short-term aerobic tank and the low oxygen reaction tank. A returned sludge contact reaction region is arranged on the front end of the anaerobic tank, and water feeding points are arranged both on the front end region and the rear end region of the anaerobic tank. The method has a simple flow, and is adaptable to wastewater quality change, and is capable of removing nitrogen and phosphorus from wastewater with low carbon source and low oxygen consumption. The method is applicable to rebuilding or building of a municipal wastewater treatment plant which has nitrogen and phosphorus removing requirements.