32results about How to "Improve effluent quality" patented technology

The invention relates to the technical field of chain skimming machines, and discloses a chain skimming machine for a rectangular pool, the chain skimming machine comprises a conveying mechanism and a skimming mechanism, the conveying mechanism is arranged on a sedimentation tank, the skimming mechanism is arranged on the conveying mechanism, the skimming mechanism comprises a conveying frame and a skimming plate, the conveying frame comprises a cross beam and a guide rod, and the skimming plate comprises a main plate and an auxiliary plate. The cross beam is horizontally arranged on the conveying mechanism, the guide rods are arranged at the ends of the cross beam respectively and are in sliding fit with the cross beam, and driving units for driving the guide rods to move are further arranged between the guide rods and the cross beam; the main plate is horizontally arranged on the cross beam, the auxiliary plate is arranged on the guide rod, the moving area of the auxiliary plate and the moving area of the main plate partially coincide, and the auxiliary plate is rotationally hinged to the guide rod and rotates around the vertical plane along with fluctuation of the inner wall of the sedimentation tank through the swing unit. When the gap between the skimming plate and the tank wall is too large, the auxiliary plate is close to the tank wall in a self-adaptive manner to make up the gap, so that the effect of cleaning the scum is achieved.

The invention discloses a sewage plant tail water treatment system and method, and relates to the technical field of sewage treatment.The sewage plant tail water treatment system is applied to tail water generated by a sewage plant adopting an ozone advanced oxidation technology, and the treatment system comprises an activated carbon reaction device, a denitrification reaction device, an ecological pond and a horizontal subsurface flow wetland; the activated carbon reaction device is communicated with the tail water pipe and comprises an activated carbon filtering layer, and the activated carbon filtering layer is used for adsorbing chemical oxygen demand and dissolved oxygen in tail water; the denitrification reaction device is communicated with the activated carbon reaction device and comprises a denitrification filter material layer, and the denitrification filter material layer is used for autotrophic denitrification nitrogen removal of tail water; the ecological pond is communicated with the denitrification reaction device and comprises aquatic plants and aquatic animals; the horizontal subsurface flow wetland is communicated with the ecological pond and is used for deeply filtering the tail water. The treatment system can improve the purification effect of the tail water of the sewage plant.

The present application belongs to the technical field of oily wastewater treatment equipment, and particularly relates to a combined filter and oil removal equipment for oily wastewater treatment. The equipment comprises coalescing filter cartridges and modified quartz sand fillings arranged in the coalescing filter cartridges, and combines a traditional filling filter with a filter cartridge type coalescing oil removal device to form a structure of 'fillings in filter cartridges'. The present application disperses the filter fillings in the coalescing filter cartridges, effectively avoids the problem of hardening of large filling slabs, improves the stability and service life of the system, and has the functions of efficient oil removal and filtration of suspended solids. The equipment has compact structure, small volume and stable operation, can significantly improve the filtration efficiency and reduce the maintenance frequency, and is suitable for oily wastewater treatment systems with large water quality fluctuations.

The application provides a biochemical pool air inlet adjusting method, which comprises the following steps: S1, replacing the air inlet pipeline of the biochemical pool with a transparent pipeline, and additionally arranging a monitoring assembly on the outer wall of the transparent pipeline; S2, synchronously collecting multi-dimensional real-time data at a fixed period at the corresponding position of the biochemical pool; S3, combining the predicted air demand with the valve characteristic curve to inversely deduce the corresponding reference value of the opening degree of the adjusting valve; S4, making the opening degree of the adjusting valve reach the corresponding reference value according to the reference value to complete the pre-adjustment; S5, calculating the opening degree correction coefficient by partition weighting according to the sensor data, and synthesizing the final target opening degree; S6, the adjusting valve automatically adjusts the opening degree of the adjusting valve according to the flow-ammonia nitrogen coupling prediction model and the opening degree correction coefficient; S7, the monitoring assembly regularly scans the transparent pipeline, and initiates backwashing when dust accumulates; and S8, combining the data self-learning every day, optimizing the flow-ammonia nitrogen coupling prediction model, improving the model precision, effectively improving the aeration efficiency, reducing the energy consumption, and simultaneously guaranteeing that the water quality meets the standard.

Aiming at the problems of inaccurate sediment monitoring, extensive sludge discharge control, low dosing accuracy and the like of the traditional sedimentation tank, the invention provides a visual monitoring and model-driven sediment prediction and sludge discharge control method and system for a sedimentation tank. The method comprises the following steps: visual monitoring: collecting images of a sedimentation tank through an underwater camera device, identifying interface characteristics of bottom mud, and constructing a bottom mud thickness distribution thermodynamic diagram in combination with an inverse distance weighted interpolation method; parameter acquisition: acquiring operation parameters such as water inlet flow, raw water turbidity, pH value and the like in real time; model-driven prediction: establishing a BP neural network model coupled with multiple variables, a mud yield model and a multi-dimensional coupled bottom mud distribution prediction model; and intelligent sludge discharge control: generating an optimization instruction of sludge discharge frequency, quantity and area based on a prediction result, and controlling sludge discharge operation. According to the invention, bottom mud monitoring automation and mud discharge control refinement are realized, the precipitation efficiency is improved, and the operation cost is reduced.

The present application relates to the field of wastewater reuse, and discloses a kind of sprout production wastewater purification reuse and energy saving circulation method, steps are as follows: (1) the impurities of sprout production wastewater are removed, then enter the conditioning tank homogenization;(2) remove organic pollutants by biochemical treatment device;(3) into flocculation reaction sedimentation tank and carry out coagulation and flocculation reaction;(4) the effluent of flocculation reaction sedimentation tank enters sand filter tank, after turbidity removal, through pipeline type ultraviolet sterilizer sterilization, and is discharged into reuse water temporary storage tank, and adds sodium hypochlorite disinfectant to ensure that residual chlorine reaches standard, to obtain reuse water;(5) the reuse water is recycled to sprout production workshop as the supplement of spray water source, to realize energy saving circulation.The effluent quality of the present application is stable, disinfection is thorough, and when reuse as the spray water of sprout production, it will not affect the quality of sprout, and improves the utilization rate of water resources;And in the process of treatment, a large amount of energy is not consumed, and the energy saving circulation of sprout wastewater can be realized.

This invention relates to the field of wastewater treatment technology, and more particularly to an urban domestic wastewater treatment device including a treatment pump station. The top of the outer arc surface of the treatment pump station is provided with a flange inlet, and the bottom of the inner arc surface of the treatment pump station near the flange inlet is connected to a conical flow guide plate. The upper surface of the conical flow guide plate is provided with an inlet in the middle. The conical flow guide plate is a double-layered structure with an arched end inside. Through a special structural design, the water flow is guided to form a slow flow state, providing sufficient reaction time for the coalescence of tiny oil droplets. This promotes the fusion of emulsified oil droplets and dispersed oil droplets to form large oil droplets. Utilizing the physical property that the density of oil is less than that of water, the oil droplets can naturally float to the surface and form a stable floating oil layer. The entire oil-water separation process does not require additional power and can be completed solely by gravity, effectively improving the oil-water separation efficiency while reducing the energy consumption and maintenance costs of the device.

The application discloses a sewage treatment plant artificial intelligence application management and control method and system based on a multi-modal model, and relates to the technical field of sewage treatment automation control.The application collects water quality, a process, water quality and energy consumption data of a sewage treatment plant systematically, and combines a dynamic relationship of mechanism variables in an ASM model to construct a cross-modal graph and perform feature fusion, so that operation parameters and mechanism variables can be accurately aligned and nonlinear dependence relationships can be described, thereby enabling high-precision prediction of key operation parameters and water quality indexes in a future period on the basis of a fusion graph, and providing an optimization calculation basis for control strategies such as an aeration amount, a reflux ratio, a reagent dosage and a residual sludge discharge amount, so that a sewage treatment plant can realize multi-objective collaborative optimization, stable water quality, intelligent process control and effective energy consumption reduction, and overall operation efficiency and environmental governance level are significantly improved.

The utility model is suitable for silicon carbide membrane filtration technical field provides a kind of agentless self-flocculation silicon carbide membrane filtration device, it include: fixed seat, the fixed seat is equipped with reaction mechanism and water production tank;The reaction mechanism includes the reaction pool of being fixed on the fixed seat, the one side of the reaction pool is equipped with ladder, one end of the reaction pool is equipped with power supply, the power supply is connected and is equipped with electrode, the one side of the reaction pool is equipped with control electric box, the inside of the reaction pool is equipped with membrane box group, the outside of the reaction pool adjacent the membrane box group is equipped with driving assembly, the top of the reaction pool is equipped with mud scraping assembly, the bottom of the reaction pool is equipped with a plurality of groups of first discharge pipeline, by this, the utility model has the advantages that reagent dosage is less, sludge production is low;High degree of automation, convenient operation;Equipment integration degree is high, and floor area is small;Processing effect is more optimal, and special water quality is suitable;Environment-friendly strong advantage.

This utility model discloses a biological tank reflux liquid regulating device, belonging to the field of biological tank flow regulation technology. It includes a biological tank, with a suction pipe on one side and a water pump at the other end. A first pipe is connected to the other end of the water pump, with a flow meter on its surface. A diversion pipe is connected to the other end of the first pipe, and a valve body is connected to the other end of the diversion pipe. A second pipe is connected to the other end of the valve body. A reflux liquid regulating mechanism is located at the upper end of the valve body. This reflux liquid regulating mechanism, through the cooperation of a transmission component and a regulating component, can precisely control the rotation angle of the valve ball, thereby changing the relative position of through-hole one and through-hole two. This allows for independent regulation of the flow rates of the two sets of pipes, enabling the reflux liquid to be evenly distributed to different areas of the biological tank, improving biological treatment efficiency and better meeting the requirements of wastewater treatment processes.

The application discloses an anaerobic treatment system and process suitable for wastewater containing high organic suspended matter, which comprises a water inlet assembly, a reactor, an internal circulation assembly, a water collecting and discharging assembly and an exhaust assembly; a group of metal membrane tubes are arranged in the reactor, and hydrolytic acid-producing bacteria are loaded in the metal membrane tubes; methanogenic bacteria are filled in the space outside the metal membrane tubes in the reactor; the reactor is connected with the water inlet assembly through the bottom of the metal membrane tubes; the internal circulation assembly is connected with the upper and lower parts of the reactor respectively; the water collecting and discharging assembly is arranged on the top of the reactor, and the reaction water is discharged from the reactor through a discharging pipeline; and the exhaust assembly is connected with the top of the reactor. The application can realize the effect that the acid-producing phase and the methanogenic phase are separated from each other and cooperate with each other, the effluent water is filtered through a membrane, and stable three-phase separation is realized. The application has the advantages of high anaerobic reaction efficiency, stable effluent water quality and high methane yield, and is especially suitable for anaerobic treatment of wastewater containing high organic suspended matter.

The present application relates to a kind of rural domestic sewage treatment device, including intercepting sewage well, septic tank, hydrolysis adjustment pool, intercepting sewage well is provided with overflow pipe and hydrolysis adjustment pool connection, hydrolysis adjustment pool is provided with grid well, hydrolysis adjustment pool is provided with suspended filler and lifting pump, in situ nitrification-denitrification pool is provided with biological membrane suspended bed filler, bottom is equipped with microporous aerator, vent valve, effluent of in situ nitrification-denitrification pool is distributed to high-density sedimentation tank. High-density sedimentation tank is provided with mixer, honeycomb inclined pipe, filter brush, top is provided with overflow weir, bottom is equipped with hopper and electric valve. Process flow is simple, operation and maintenance is simple, effluent quality is stable, process method and device with low operating cost, short start-up time, fundamentally solve the problem existing in the current rural sewage terminal, and the management level corresponding with rural domestic sewage treatment is matched.

This utility model discloses a sedimentation tank for industrial wastewater treatment that facilitates sludge removal. It includes a sedimentation tank, a sludge collection device, and sedimentation troughs. The sludge collection device is fixedly connected to the bottom of the sedimentation tank. Several sedimentation troughs are evenly arranged inside the sedimentation tank, and a support frame II is connected to the outside of the sedimentation tank. The sludge collection device enables the cleaning of sediment in a closed state, preventing the sediment from being stirred up and re-mixed with the supernatant, thus ensuring the stability of the effluent quality. This utility model, while preventing sediment from being stirred up and affecting the effluent quality, also facilitates maintenance and cleaning of the equipment by staff.

The present application relates to the application field of water purification plant production wastewater treatment, in particular to a high-iron-manganese backwashing wastewater treatment method. The high-iron-manganese backwashing wastewater treatment method provided by the present application integrates coagulation, reaction, sedimentation and concentration, and magnetic powder is added in the coagulation sedimentation tank. The magnetic powder serves as a crystal nucleus, more easily forms alum flowers, greatly improves the specific gravity of the alum flowers, speeds up the sedimentation speed, and can improve the sedimentation efficiency of the high-iron-manganese backwashing wastewater. In combination with the addition of coagulants and coagulant aids, the treatment efficiency of the high-iron-manganese backwashing wastewater is further improved, the content of iron, manganese and SS in the effluent is reduced, and the solid content of the sludge is improved. The high-iron-manganese backwashing wastewater treatment method provided by the present application has the characteristics of small land occupation, high surface load, short hydraulic retention time and good treatment effect, improves the effluent water quality, the formed sedimentation sludge has a lower water content, the sludge discharge is more conducive to dewatering, and the subsequent sludge treatment pressure is reduced.

The application relates to the technical field of water treatment, and discloses an environment-friendly mine exploitation sewage treatment device, which comprises a sewage treatment tank, a flocculation assembly is arranged in the sewage treatment tank, and a sewage treatment bin is connected to the outer wall of the sewage treatment tank; a partition bin is fixedly embedded in the sewage treatment bin, metal pipes and drainage pipes are respectively embedded in the partition bin and communicate with the sewage treatment tank; a lower partition plate is also embedded in the partition bin, and a center through hole is arranged at the middle position of the lower partition plate. The environment-friendly mine exploitation sewage treatment device is provided with the partition bin, the fine particle size of the particles is greatly improved in sequence from bottom to top, the problem of electrode plate scaling of an electrochemical flocculation assembly in a subsequent sewage treatment tank is effectively avoided, and the stable operation of a deep treatment unit is ensured.

This utility model relates to the field of wastewater treatment technology and discloses a wastewater treatment system for a highway service area, comprising: an equalization tank, a water treatment tank, a pre-sedimentation tank, and an MBR membrane tank; the water treatment tank includes an anoxic tank and an aerobic tank, the equalization tank and the anoxic tank are connected, the anoxic tank and the aerobic tank are connected, the aerobic tank and the pre-sedimentation tank are connected, and the pre-sedimentation tank and the MBR membrane tank are connected. The pre-sedimentation tank is used to pre-treat suspended solids in the wastewater entering the MBR membrane tank. This application, by setting up a pre-sedimentation tank to pre-treat suspended solids in the wastewater entering the MBR membrane tank, can effectively remove most of the suspended solids and some colloidal substances from the wastewater, avoid high-load operation of the MBR membrane, reduce the risk of membrane fouling, extend membrane life, reduce cleaning frequency and energy consumption, and improve effluent quality.

This utility model discloses a seawater desalination pretreatment filtration system, belonging to the field of seawater desalination. It includes a chemical dosing mixer, a modified fiber filter, a coarse sand filter, a fine sand filter, and a product water tank. The outlet of the chemical dosing mixer is connected to the inlet of the modified fiber filter, the outlet of the modified fiber filter is connected to the inlets of the coarse and fine sand filters, and the outlet of the coarse sand filter is connected to the inlet of the fine sand filter. By setting up a filtration system consisting of a chemical dosing mixer, a modified fiber filter, a coarse sand filter, and a fine sand filter, and utilizing the characteristics of modified polypropylene and quartz sand filter media of different particle sizes, combined with the flexible two- or three-stage filtration based on water quality indicators such as seawater turbidity, SDI15, and TOC, and the addition of coagulants when necessary, this system solves the problems of poor treatment effect, high energy consumption, and high investment and operating costs of traditional seawater desalination pretreatment processes, achieving stable effluent quality and reduced costs.

The invention discloses an electrode dependent anaerobic ammonium oxidation process, which belongs to the technical field of water pollution and comprises the following steps: enriching floating anaerobic ammonium oxidation bacteria, preparing a three-electrode system, preparing a culture medium, switching and domesticating electron acceptors and collecting gas generated by reaction. The method gets rid of dependence on nitrite, effectively simplifies the influent water quality requirement and the process regulation and control flow, transmits electrons through external voltage to replace nitrite as a unique electron acceptor, can realize efficient anaerobic oxidation of ammonia nitrogen without additional addition of nitrite and nitrate, reduces the process complexity and the operation cost, and is suitable for large-scale industrial production. And the adaptation range of inlet water quality is widened.

This invention relates to the field of water treatment technology, specifically disclosing a hydraulically driven continuous flow aerobic granular sludge-membrane filtration integrated device and its application. The device includes an influent system, an effluent system, a reactor shell, a membrane module, and an aeration module. A first baffle is installed inside the reactor shell, dividing the interior into an anoxic zone and an aerobic zone. A multi-stage flow guiding mechanism is vertically arranged within the anoxic zone to change the flow direction of the sludge-water mixture. The aeration module is located at the bottom of the aerobic zone, enabling the sludge-water mixture to circulate between the anoxic and aerobic zones. The membrane module is located within the aerobic zone and positioned above the nano-aeration disc. This invention achieves favorable hydraulic conditions under continuous flow, creating a driving force for granulation and enabling rapid formation and stable operation of aerobic granular sludge. The combination of aerobic granular sludge and membrane module filtration improves effluent quality, reduces membrane fouling, shortens the process flow, and reduces floor space requirements.

The application discloses a kind of hydraulic stirring PAC material dissolver, including base, the base is installed with material dissolver jar, the material dissolver jar includes jar body, the upper portion of the jar body is equipped with water pipe, the lower portion of the jar body is equipped with blowdown pipe;The upper portion of the jar body is equipped with medicine storage box, the medicine storage box includes box body, the jar body is equipped with a plurality of evenly arranged feeding pipe between box body;Material dissolver jar side is equipped with water pump, the water inlet pipe of water pump is connected with the upper portion of material dissolver jar, the water outlet pipe of water pump is connected with the bottom of material dissolver jar, the water outlet pipe side is equipped with third water outlet branch pipe, the water inlet pipe, water outlet pipe, water pipe, blowdown pipe and third water outlet branch pipe are all equipped with valve.This application makes sewage and PAC in jar body circulate and flow by water pump, forms hydraulic stirring effect, reduces floor area, reduces manufacturing cost and maintenance cost at the same time, significantly improves the dissolution efficiency and mixing uniformity of PAC, ensures the sufficient dissolution and uniform distribution of PAC in water.

The utility model relates to water purification technical field, concretely provides a kind of pure drinking equipment, to solve the problem of the use experience of user of current pure drinking equipment because of the inability to provide larger water volume, lower temperature's cool boiled water and influence, this application pure drinking equipment includes cold water tank, heating component, cool boiled water tank, refrigerating plant and water outlet component, the water inlet end of cool boiled water tank is communicated with heating chamber, so that hot water in heating chamber flows into cool boiled water tank, cool boiled water tank is located in cold water tank, so that the heat exchange of hot water in cool boiled water tank and cold water in cold water tank is generated to prepare cool boiled water, refrigerating plant is used to refrigerate cold water in cold water tank, the water outlet end of cold water tank, cool boiled water tank can be communicated with water outlet component, so as to output cold water, cool boiled water for user drinking.This application can more quickly prepare a large amount of cool boiled water, so that pure drinking equipment can provide cool boiled water of different temperature, cold water, improve the use experience of user.

This invention discloses a modular cascaded coupled multi-stage treatment system and method for mine wastewater, belonging to the field of environmental water treatment technology. It includes a filtration module filled with filter media for particle removal; an adsorption module filled with composite adsorption media for adsorbing heavy metal and organic pollutants; a reaction module filled with slow-release reaction media for removing heavy metal ions from wastewater through sulfide precipitation and reduction reactions; and a sedimentation module to slow down the reaction time and cause the water flow to reverse vertically. This invention achieves multi-stage synergistic removal of suspended solids, organic matter, and heavy metals from mine wastewater through a combination of sand, fly ash ceramsite, and heavy metal treatment agents; it relies on gravity flow due to the natural slope of the mine shaft for gravity-based operation; its modular design allows for flexible series connection to adapt to different pollution levels; and the semi-open tank facilitates media replacement, with heavy metals solidified in the reaction module, resulting in minimal secondary pollution.

The utility model belongs to wastewater biological treatment technical field discloses a kind of zeolite fluidized bed intermittent nitrosation reactor, including water inlet system, aeration system, stirring device, screen gauze isolator, overflow weir, water outlet system and reactor body;The water inlet system is connected with the bottom of reactor body, the aeration system is connected with the bottom of reactor body, the stirring device extends vertically along reactor body longitudinal center line, paddle is located in reactor middle work area, the screen gauze isolator is straddled in the opening at the upper end of the reactor body, the overflow weir is arranged in the upper portion of the reactor body, the water outlet system is connected with the overflow weir, the reactor body is filled with zeolite filler.The utility model utilizes natural zeolite to adsorb and enrich free ammonia, realizes the efficient enrichment of low concentration free ammonia, and the trans-arched gauze isolator isolates zeolite biofilm in reaction area, realizes the separation of flocculent sludge, and improves effluent quality.

The invention relates to the technical field of detergent wastewater treatment, in particular to a method for treating detergent wastewater by utilizing foundry waste sand regeneration waste. According to the method, waste generated after foundry waste sand regeneration is taken as a basis, and the detergent wastewater is pretreated by establishing a'Fenton oxidation + flocculation precipitation 'dual system, so that the problem of waste discharge of a novel regeneration process is solved, efficient degradation of COD (Chemical Oxygen Demand) content in the detergent wastewater is also realized, and the purposes of'waste recycling' and'treating waste with waste 'are achieved.

The application provides a multi-stage sludge screening device and a sewage treatment system. The device is used for screening sludge of a sewage treatment unit, and comprises a first number of first cyclones, a second number of second cyclones and a third number of third cyclones. The specification parameters of the first cyclones, the second cyclones and the third cyclones gradually decrease. The feed inlet of each first cyclone is used to receive sludge of the sewage treatment unit. The overflow outlets of the first cyclones are in communication with the feed inlets of the second cyclones. The underflow outlets of the first cyclones are in communication with a first pipeline. The other end of the first pipeline is in communication with a main pipeline. The overflow outlets of each second cyclone are in communication with the feed inlets of the third cyclones. The underflow outlets of each second cyclone are in communication with a second pipeline. The underflow outlets of each third cyclone are in communication with a third pipeline. The overflow outlets of each third cyclone are in communication with the main pipeline through a fourth pipeline. The multi-stage sludge screening device and the sewage treatment system can improve the performance of sludge and effectively improve the sewage treatment efficiency.

The utility model relates to a kind of modularization assembly type high-efficiency cyclic anaerobic IC reaction device, self-cleaning uniform water distributor is laid in the mud bucket area of bottom in anaerobic IC reactor, and self-cleaning uniform water distributor includes: water distribution main pipe and multiple water distribution branch pipes at its lower end and around water distribution main pipe radially distributed, the open end of water distribution main pipe is communicated with water inlet pump through sewage pipe;Each water distribution branch pipe one end is open, and the other end is closed;The open end of each water distribution branch pipe is communicated with the inner chamber of water distribution main pipe, and each water distribution branch pipe is inclined downward, multiple water distribution holes with gradually increasing aperture are sequentially arranged on single water distribution branch pipe from open end to closed end direction, and the included angle between water distribution hole opening direction and opening point and the line connecting with center is 20 °~45 °. Advantageous effect is: ensure that water power is uniformly distributed, make bottom sludge present cyclone flow state, improve the expansion degree of reinforced expanded sludge, and simultaneously self-clean bottom sludge, prevent sludge deposition.

The utility model relates to hot water supply equipment technical field, and disclose a campus hot water supply device, including have: the shell, the outer surface of shell is opened with vertical groove, the inside fixed sleeve of shell has infusion pipe, one end fixed sleeve of infusion pipe has water outlet. The utility model discloses by setting up by slide rail, sliding block, lifting rod, connecting block, water receiving platform and drive mechanism etc. constitute the lifting mechanism, can according to the height of the user's used water receiving container flexible adjustment water receiving platform's height, effectively reduce the difference between the container opening and water outlet. This design can significantly reduce the probability of hot water splashing, avoid the user being scalded, improve the use safety, reduce the rust problem caused by hot water drop on the surface of the device or the ground around, also provide the convenience for the teacher and student of action inconvenience to draw water, enhance the practicality and applicability of the device.

The invention discloses a sewage treatment process based on aerobic granular sludge, which comprises the following steps: introducing sewage to be treated into a reaction tank, and enabling the sewage to be in contact with the aerobic granular sludge in the reaction tank; aerating the reaction tank; stopping aeration; discharging supernatant of the reaction tank and retaining granular sludge; a proper amount of aged sludge is discharged according to the system operation load, new living sludge is supplemented, and the water inflow is adjusted; the invention discloses intelligent cycle adjustment based on a granular sludge life cycle model. The method comprises the following specific steps: collecting related operation parameters; calculating the life cycle index LCI of the granular sludge; and dynamically adjusting the aeration time, the precipitation time and the sludge discharge proportion of the SBR according to the life cycle stage. According to the method, the life cycle model of the aerobic granular sludge is introduced, and an intelligent cycle adjustment algorithm is constructed in combination with multi-index data such as the particle size, the settling performance and the oxidation-reduction potential, so that accurate identification and dynamic regulation and control of the running state of the aerobic granular sludge are realized.

The invention provides an optimization method and system for a process for removing calcium and magnesium from calcium and magnesium containing waste liquid. The optimization method comprises the following steps: S1, by taking sodium fluoride as a precipitator, setting initial process parameters of the calcium ion and / or magnesium ion-containing waste liquid, and obtaining initial parameters in the calcium ion and / or magnesium ion-containing waste liquid; s2, performing formula model construction through the initial parameters and the initial process parameters to obtain a calculation K value; s3, comparing the calculated K value with a target K value, and optimizing the process parameters and / or the initial parameters according to a comparison result until the target K value is reached; and S4, removing calcium ions and / or magnesium ions in the waste liquid by adopting the optimized parameters capable of reaching the target K value and taking sodium fluoride as a precipitator. According to the method, a plurality of key parameters in the calcium and magnesium removal process of sodium fluoride can be comprehensively regulated and controlled, and a judgment constant (K value) is output through an original mathematical formula model and is used for guiding or automatically controlling process operation, so that the optimal calcium and magnesium removal effect is achieved.

This invention discloses a nucleogranulation device and its operating method, comprising an annular water distribution pipe installed below a tank, a sludge pipe installed on the tank at the bottom of the annular water distribution pipe, and a granulation reaction zone, a concentration zone, a separation zone, an inclined plate clarification zone, and an overflow trough arranged sequentially from bottom to top above the annular water distribution pipe. A packing device is installed in the separation zone; a drain outlet is provided on the overflow trough; a hollow barrel is located at the center of the granulation reaction zone, and an axial flow pump is installed inside the hollow barrel. The axial flow pump is used to pump part of the water in the concentration zone into the central hollow barrel and transport it to the center of the annular water distribution pipe, with the hollow barrel located directly above the annular water distribution pipe. A water flow disperser is installed at the bottom of the annular water distribution pipe. This invention can increase the operating load, increase the treatment depth, effectively improve the operating load and sludge concentration effect, and the discharged sludge can be directly dewatered, thus improving the effluent quality.