814 results about "Backwashing" patented technology

The invention relates to the technical field of water treatment equipment, in particular to a coaxial nested ultrafiltration and nanofiltration integrated water purification device and system.The coaxial nested ultrafiltration and nanofiltration integrated water purification device comprises a main shell, and an annular ultrafiltration treatment area and an inner nanofiltration treatment area are coaxially arranged in the main shell. An energy storage adjusting assembly is arranged in the nanofiltration treatment area and comprises an elastic breathing sleeve coaxially arranged outside the nanofiltration membrane assembly in a sleeving mode. The sleeve elastically expands during filtering, so that the effects of buffering pressure and storing energy are achieved; and turbulent flow convex ribs can be arranged on the inner wall of the sleeve, so that the nanofiltration membrane is physically cleaned when the sleeve retracts. Besides, a backwashing pipeline and a valve are arranged, linkage control is carried out when the control unit detects that expansion of the sleeve exceeds the limit, and ultrafiltration produced water stored on the nanofiltration side is reversely pushed by utilizing pressure energy released by retraction of the sleeve so as to backwash an ultrafiltration membrane. According to the invention, the cooperation of pressure buffering, online cleaning of the nanofiltration membrane and energy storage backwashing of the ultrafiltration membrane is realized, the operation is stable, the efficiency is high, and the energy is saved.

The invention relates to a coal chemical wastewater treatment device with nano-catalysis coupled with bioelectrochemistry. The invention belongs to the technical field of coal chemical wastewater treatment. The device comprises a pretreatment area, a bioelectrochemical treatment area, a catalyst recovery area and a clear water area which are connected in sequence, a nano Fe3O4 / TiO2 composite catalyst filling layer and a microporous aeration device are arranged in the pretreatment area; a biological anode region of the biological electrochemical treatment region adopts a graphene modified carbon brush, and a biological cathode region of the biological electrochemical treatment region adopts a sulfur-doped carbon felt; and the catalyst recovery area adopts a high-gradient permanent magnetic roller and is matched with a pulse backwashing system. The treatment cost of each ton of water is reduced to 25-35 yuan, and the cycle life of the catalyst is gt; the time is 200 times; the sulfur can be reused in a desulfurization process of a sewage treatment plant, so that the medicament cost is reduced; the carbon emission is reduced by 60%; the COD removal rate is not less than 95%, the total phenol removal rate is not less than 98%, and the total nitrogen removal rate is not less than 90%; energy consumption is reduced by 40% compared with a traditional electrochemical method, and the catalyst recovery rate is gt; 95%.

The invention provides a method for recovering Si, C and TiO2 based on chlorinated waste salt water quenching slag, which comprises the following steps: sequentially carrying out water quenching dissolution, precipitation separation and filter pressing dehydration treatment on chlorinated waste salt to obtain water quenching slag and supernate; adding a dilute acid solution into the water-quenched slag, dissolving, and adding a reducing agent for reaction to obtain slurry; carrying out solid-liquid separation on the slurry to obtain a solid material and filtrate; the filtrate is pumped into a boiling bed separator, the petroleum coke and TiO2 are intercepted by a medium material layer, clear liquid is discharged, then the medium material layer is subjected to backwashing regeneration, and the desorbed petroleum coke and TiO2 are subjected to graded enrichment by a hydrocyclone, so that petroleum coke slurry and TiO2 slurry are obtained. According to the method, TiO2, C and other resources in the water-quenched slag obtained after molten salt chlorination waste salt water quenching are recycled, and the technical problem that in the existing chlorination waste salt resourceful treatment process, Si, C, TiO2 and other resources in the water-quenched slag are wasted is solved.

The utility model discloses a semi-automatic backwashing laminated filter. The external structure of the semi-automatic backwashing laminated filter comprises a handle, a filter base body, a water inlet, a water outlet, a laminated shell, a blow-down valve, a blockage indicator, a filter screen flushing valve and the like, the internal structure comprises a flow direction selector, a butterfly check valve, a laminated filter element, a rotational flow centrifugal disc, a laminated compression inner cover, a laminated compression outer cover, a spring between the laminated compression inner cover and the laminated compression outer cover and the like. The channel position of the flow direction selector is switched by rotating the handle, so that the switching between the filtering mode and the backwashing mode is realized. In a filtering mode, muddy water flows into a raw water cavity outside the lamination after being accelerated by the rotational flow centrifugal disc, impurities are intercepted, and clear water flows into a downstream pipeline; and in a backwashing mode, the water flow is sprayed out from the spraying holes in the filter element frame by pressing the position of the lamination for compressing the inner cover and loosening the lamination, so that impurities are eluted from the lamination and discharged through the blow-down valve. In addition, a filter screen is arranged on the flow direction selector to intercept impurities of flushing water, and the filter screen can be flushed in a filtering mode. The utility model has the advantages of convenient use and simple structure.

The invention relates to the field of leather wastewater treatment, and discloses a leather wastewater multi-stage filtration and recovery treatment system, which comprises a primary treatment tank, one side of the primary treatment tank is fixedly provided with a rough filtration chamber, and the interior of the rough filtration chamber is fixedly provided with an inclined mesh cylinder; a slag conveying pipe which is obliquely arranged is fixedly mounted in the middle of the interior of the mesh cylinder, the tail end of the slag conveying pipe extends to the exterior of the rough filtration chamber, a conveying auger is fixedly mounted on the outer diameter of the rotating shaft, and a slag opening is formed in the side, located in the mesh cylinder, of the top end of the slag conveying pipe; a slag scraping brush is fixedly mounted in the middle of the top end of the mesh cylinder, and a secondary treatment tank is fixedly mounted on the other side of the primary treatment tank. Through three-stage progressive filtration and combination of automatic slag removal and backwashing design, the treatment load is reduced, stable operation of the system is guaranteed, maintenance is simplified, the leather wastewater treatment efficiency and the effluent quality are greatly improved, and efficient recovery is realized.

The invention provides a laminated filter and a lamination thereof, and relates to the technical field of filtering devices.The surface of the lamination is provided with continuous filtering protrusions to form a water inlet groove and a water outlet groove, the water inlet groove is internally provided with a flow guiding protrusion and an intercepting protrusion, and the flow guiding protrusion divides the water inlet groove into a first flow channel and a second flow channel; the intercepting convex part is arranged behind the flow guide convex part to form a baffling section and a sand intercepting section; the flow guide convex part is used for inducing water flow to be divided, and the baffling section and the sand intercepting section are used for realizing ordered deposition of particulate matters and streaming and freewheeling of water flow; according to the structure, on the technical premise of guaranteeing the filtering precision, the head loss is remarkably reduced, the pollutant holding capacity is improved, the industrial technical defects that a traditional laminated filtering device is prone to being blocked and the backwashing frequency is too high are overcome, water resource consumption and energy loss in the backwashing process are reduced, the service life is prolonged, the operation and maintenance cost is reduced, and the working efficiency is improved. An efficient and energy-saving technical scheme is provided for the fields of water treatment, industrial filtration and the like, and powerful support is provided for green and low-carbon transformation of the industry.

The invention relates to an on-line monitoring and melt purification device and method for XLPE insulation material production and a storage medium, the device is integrated on a melt pipeline between an outlet of a main extruder and a die head, and the device comprises an ultrasonic monitoring unit for obtaining ultrasonic characteristic parameters of a melt through ultrasonic scanning; the intelligent purification unit comprises a multi-cavity filter, a switching valve connected with each cavity of the multi-cavity filter, and a backwashing system for cleaning a single filter cavity; and the central control unit is electrically connected with the ultrasonic monitoring unit and the intelligent purification unit, and is used for receiving the monitoring data, carrying out intelligent judgment and sending out a control instruction. The ultrasonic monitoring unit achieves on-line monitoring of the melt impurity concentration, through cooperation of the multi-cavity filter and the switching valve, on-line uninterrupted switching of filtering cavities is achieved, meanwhile, a filter element is cleaned in time through the backwashing system, and the purity of an XLPE insulating material and the product reliability are effectively improved.

The invention relates to the technical field of industrial process intelligent analysis, in particular to a method and system for monitoring the regeneration process of make-up water resin, and the method comprises the steps of monitoring backwashing, water filling, layering and regeneration processes through images and sensing signals, judging a reaction endpoint, calculating the optimal regeneration duration and outputting a monitoring result. The expansion height and layering texture features of a resin bed are captured through machine vision, the physical form is accurately fed back to avoid resin loss and guarantee the layering effect, the gas-liquid phase change moment is sensitively captured through the frequency shift characteristic of vibration frequency, the filling degree of a tank medium is guaranteed, and the contact efficiency is improved. According to the method, the concentration trend and the conductivity variance are analyzed in combination with least square regression, the chemical equilibrium endpoint of the ion exchange reaction is intelligently recognized, the optimal operation duration is calculated by applying nonparametric trend inspection, data driving in the regeneration process is achieved, and the agent consumption and the time cost are remarkably reduced on the premise that the effluent quality is guaranteed.

The invention relates to the technical field of sewage treatment, in particular to an assembly type stacked hydraulic grit chamber for a sewage treatment plant. The assembly type stacked disc hydraulic grit chamber for the sewage treatment plant comprises a stacked disc module device, an unpowered water distribution device and a backwashing and fluidizing device, the stacked disc module device comprises a plurality of stacked discs which are sequentially arranged at intervals in the vertical direction, a water outlet channel is formed between every two adjacent stacked discs, and a water outlet is formed in the inner side of each stacked disc. According to the assembly type stacked disc hydraulic grit chamber for the sewage treatment plant, water flow is sprayed to the inner surface of the stacked disc through the cleaning disc assembly so as to wash the inner surface of the stacked disc, the automatic backwashing function is achieved, the problem of sand accumulation of the stacked disc is effectively solved, and sand hardening is prevented. Through the automatic backwashing function, the manual cleaning frequency and strength are greatly reduced, the manual labor intensity and potential safety hazards are reduced, the stacked trays are prevented from being blocked, and the service life of the stacked trays is prolonged.

The invention relates to the technical field of separation and filtration control, and discloses a backwashing energy-saving control method and system for a filter tank of a water purification plant, and the method comprises the steps: analyzing the pore change condition and resistance distribution condition of a filter layer according to filter tank parameter data collected by a preset sensor in real time, and calculating the pollution degree; calculating a backwashing trigger water volume threshold value based on preset design parameters, calculating a load threshold value based on the accumulated treated water volume, and if the pollution degree is greater than the backwashing trigger water volume threshold value or the treated water volume is greater than the load threshold value, triggering backwashing and generating a backwashing instruction; analyzing the physical characteristics of the filter material, calculating the critical value of the expansion rate of the filter material, calculating the backwashing water quantity and the backwashing gas quantity in combination with the pollution degree, and outputting a backwashing parameter set; controlling corresponding equipment to perform backwashing operation, and if the water quality index is greater than or equal to a preset water quality standard, stopping the backwashing operation; according to the invention, the resource utilization rate can be improved while the flushing safety is ensured, the energy consumption is saved to the greatest extent, the filter material is protected, and the energy is saved.

The invention discloses a self-adaptive pulse backwash intelligent control method for TAC membrane stock solution filtration, and relates to the technical field of pulse backwash, and the method comprises the following steps: collecting pressure data of an outlet of a TAC membrane stock solution filtration device during pulse backwash to obtain pressure change data of a washing outlet, and collecting related parameters of pulse backwash; performing data preprocessing on the flushing outlet pressure change data, and performing pressure fluctuation analysis to obtain pressure fluctuation change data; establishing a fluctuation change prediction model, and predicting the pressure fluctuation change in the pulse backwashing process to obtain fluctuation change prediction data; self-adaptive control is carried out on the duration of pulse backwashing; the method is used for solving the problem that when the existing pulse backwashing technology is used for carrying out pulse backwashing on the TAC membrane stock solution filtering device, the suitable time length of pulse backwashing cannot be predicted according to the pressure change of a backwashing outlet, and then the pulse backwashing cannot be ended in time in a self-adaptive manner.

The invention relates to the technical field of washing water treatment, and discloses a gradient type oil-solid and water pure physical separation system and method for MTO washing water.The separation system comprises a liquid inlet pipe, a liquid inlet valve and a liquid inlet pump are installed on the liquid inlet pipe, and a secondary deslagging system, a secondary oil-water separation system and a buffer water storage tank are sequentially connected to the liquid inlet pipe in the liquid inlet direction; a liquid level sensor and a backwashing system are mounted on the buffer water storage tank; the backwashing system is sequentially communicated with the secondary deslagging system and the secondary oil-water separation system; a buffer flow guide mechanism is installed at the liquid inlet end of the second-stage deslagging system, and a stepped filler assembly is installed in the second-stage deslagging system. A physical gradient separation process is adopted, step-by-step accurate removal from macroscopic particles to microscopic emulsified oil and efficient recovery of oil phase components in wastewater can be realized, the turbidity and solid content indexes of effluent are remarkably improved, and long-period continuous stable operation can be realized.

The invention belongs to the technical field of sewage treatment, and particularly relates to a jet type multistage catalytic ozonation system and process. The system adopts a structure in which at least two stages of reaction units are connected in series, and each stage of unit is integrated with a jet flow gas distribution device consisting of a circulating water pump, a Venturi jet device and a secondary jet flow synergistic nozzle. Sewage flows forwards in the tank in a baffling manner and is in full contact with ozone mixed liquid reversely ejected from the nozzle at the bottom of the tank, so that the gas-liquid mass transfer efficiency is greatly improved. The mixed sewage uniformly passes through a catalyst bed layer with a low filling height (400-600mm) through a water distribution system to be subjected to catalytic oxidation, and the system does not need to be provided with a backwashing device due to the design. And deep degradation of pollutants is realized through multi-stage series connection. The invention solves the problems of easy blockage of a gas distribution system, low ozone utilization rate and frequent backwashing of a catalyst bed layer in the existing catalytic ozonation technology, is especially suitable for advanced treatment of high-salt and high-hardness sewage, and has the advantages of high mass transfer efficiency, stable operation and low investment and operation cost.

The utility model relates to water purification technical field discloses a big flow ultrafiltration membrane water purifier with self -cleaning and backwash function, including prefilter and two or more than two parallel connection's ultrafiltration membrane water purifier, water purifier purifying water export is equipped with the three ways, and the three ways are connected with the loose joint and become two water purifier's purifying water cavity intercommunication, and the water inlet and sewage water mouth of water purifier are equipped with control valve and three ways, and the three ways are connected with the loose joint and become water inlet channel and sewage water channel respectively, through closing or opening corresponding water inlet control valve and sewage water control valve, the purifying water of water purifier automatic backwash is carried out to the filter core of another water purifier, and backwash is crossed and is carried out between two or more than two water purifiers, and sewage water pipeline communication is often used water's wash vegetables pool, mop pool, such as toilet equipment, and the function of backwash and sewage water at any time is superimposed, makes filter core more clean, if maintaining properly, the service life of water purifier filter core reaches at least ten years or more.

The utility model discloses a double-tank agricultural irrigation water filtering device with backwashing, which comprises a water inlet pipe, a water outlet pipe, a first filtering tank and a second filtering tank, filtering components are arranged in the first filtering tank and the second filtering tank, the water inlet pipe is communicated with the first filtering tank through a first flow guide pipe, and the water inlet pipe is communicated with the second filtering tank through a second flow guide pipe. A first waste discharge pipe communicated with the inner cavity of the first filtering tank is arranged on the outer side wall of the first filtering tank, a second waste discharge pipe communicated with the inner cavity of the second filtering tank is arranged on the outer side wall of the second filtering tank, the first filtering tank is communicated with the water outlet pipe through a third flow guide pipe, and the second filtering tank is communicated with the water outlet pipe through a fourth flow guide pipe; a first on-off control valve is arranged corresponding to the first flow guide pipe, a second on-off control valve is arranged corresponding to the second flow guide pipe, a third on-off control valve is arranged corresponding to the first waste discharge pipe, and a fourth on-off control valve is arranged corresponding to the second waste discharge pipe. According to the utility model, automatic filtration of irrigation water and backwashing operation of the filter assembly can be realized.

This invention discloses a method and system for purifying and treating release agents, belonging to the field of release agent purification and treatment. The treatment method is as follows: S1, raw release agent wastewater is introduced into a treatment tank for hydraulic cavitation treatment, while ozone is simultaneously introduced. Floating oil, waste wax, and solid particulate matter in the wastewater float to the surface of the treatment tank and overflow into a scum tank; S2, after cavitation treatment, when there is very little scum on the surface of the treatment tank, the treated liquid in the treatment tank is introduced into a media filter for further filtration. The filtered clean liquid is then transported to a supply tank; S3, when the media packing adsorbs a thick wax layer, the pressure in the filter tank reaches a threshold. Water from the circulating water tank is introduced into the filter tank to backwash the wax layer. The water containing wax after backwashing enters the circulating water tank; S4, when the wax content in the circulating water in the circulating water tank reaches a threshold, a low-temperature steel roller is used to cool the water, causing wax to precipitate onto the steel roller. The wax is scraped off and collected, and the water is reused. This invention uses hydraulic cavitation to break out and remove oil and wax from waste liquid, and further removes residual waste wax from the treated liquid through media filtration, ensuring the cleanliness of the recycled mold release agent liquid.

The utility model discloses a gas production platform gas lift equipment inlet gas filter, which comprises a filter container, a filter element, a filter element, a filter element, a filter element, a filter element, a filter element, a filter element, a filter element, a filter element and a filter element cover, and is characterized in that the filter container is a cavity with an opening at the top; the filter element is made of 316L materials and has the characteristics of corrosion resistance, high temperature resistance and the like, the filter element is made of 316L materials, and the fixing assembly is arranged at the top of the filter container and comprises a blind plate, a fixing pipe and a limiting part, and the fixing pipe is fixedly mounted on the outer side of the filter container. The filter element is suitable for long-term use in the specific environment of natural gas filtration, and the filter element is long, so that the filter area is large, and frequent blockage in a short time is prevented; the precision of the filter element is 10 micrometers, impurities and particulate matter in natural gas can be effectively filtered, the gas inlet quality of the gas lift equipment is guaranteed, a backwashing pipe is installed in the filter container, a spray head is fixedly connected to the outer side of the backwashing pipe, the inner wall of the filter container can be washed, and the impurities are discharged through a blow-off pipe.

The invention provides a direct water purification system with an automatic backwashing function, which comprises a raw water inlet part, a first pressure valve, a filtering device, a second pressure valve, a purified water outlet part, a waste water outlet part and an energy recovery waterway, and the energy recovery waterway is in liquid communication with the filtering device, the second pressure valve and the first pressure valve. Wherein the energy recovery waterway is configured to accumulate the purified water to accumulate pressure when the purified water outlet part is closed, and to reversely flow the purified water to the filtering water outlet through the accumulated pressure to clean the filtering assembly. The direct-delivery water purification system with the automatic backwashing function is suitable for automatically cleaning the direct-delivery water purification system after purified water is used and output every time.

The utility model relates to a common rapid filter surface sweeping and washing device which comprises a filter body, a first cleaning structure is arranged outside the filter body and comprises a sweeping and washing water pipe, the sweeping and washing water pipe is fixedly installed inside the filter body, and a T-shaped water conveying pipe is fixedly installed on the left side of the sweeping and washing water pipe. According to the device for sweeping and washing the surface of the common rapid filter, a backwashing process is carried out on the interior of the filter through the arrangement of a backwashing structure, scum floats on the water surface in the backwashing process, then the floating scum retreats into a drainage tank through the arrangement of a first cleaning structure, and then a driving motor is started to drive a vertical rod and a scraper to move, so that the surface of the filter is cleaned. And the second cleaning structure is arranged to clean and pack the residual scum, so that the purpose of conveniently cleaning the scum in the backwashing process is achieved.

The invention belongs to the technical field of heat supply, and discloses a phase change heat storage device for a heat supply unit, which comprises a heating radiator. Through cooperation of the heat exchange assembly, the water supply assembly and other structures, the water supply assembly guides water to enter one end of the flow dividing cavity, the inclined face of the cleaning plate located at the upper end is impacted by water flow and descends, part of the water flow enters a gap between the cleaning plate and the flow dividing cavity through a notch in the edge of the cleaning plate at the lower end, and the water flow reversely flows; water pressure can drive the cleaning plate located at the lower end to ascend, hard objects rub the inner wall of the flow dividing cavity, most hard impurities can be broken and fall off, the impurities are discharged through the notch, the retention condition is prevented, sewage is stored in the water storage assembly, water entering the heating radiator is used for backwashing, the water does not contain too many impurities, and therefore the backwashing quality is ensured. The water storage assembly can prestore a part of water, water feeding and water discharging of the heating radiator are not affected too much, meanwhile, the purposes of cleaning and non-stop can be achieved, and the influence of the device on real life is reduced.

The invention relates to a power plant water resource recycling system which comprises a catch basin, a sewage tank, a sludge tank, a wastewater tank, an ultrafiltration backwashing recycling water tank, an industrial recycling water tank, a reaction sedimentation tank, an energy station industrial water tank, a mechanical tower water replenishing tank and a final neutralization tank, and is provided with a lifting pump, a water pump and other power devices. The system is in a closed-loop mode of multi-water-source collection, staged treatment, multi-scene reuse and recycling, full recycling of sewage and rainwater of the power plant is achieved, cost is saved, the utilization efficiency of water resources is improved, and remarkable economic benefits and social benefits are achieved.

According to the ginseng extraction system and method provided by the invention, the dual goals of high purity and high yield of ginsenoside extraction are achieved through raw material adaptive parameter pre-optimization, self-adaptive cascade purification and activity protection, the enrichment effect of high-value monomer saponin is remarkable, and the loss of active ingredients is accurately controlled. According to the application, a detection-decision-regulation full-process closed-loop intelligent control system is constructed, near infrared spectrum rapid screening and HPLC-MS / MS accurate quantitative dual-mode online detection are fused, real-time and accurate monitoring of the saponin content is realized, and off-line detection and artificial experience parameters are not needed; the multi-target central control unit can automatically decide a purification path and process parameters according to detection data, and designs such as membrane pollution on-line monitoring, automatic backwashing and solvent circulating preheating are combined, so that continuous operation of the process is ensured, and production interruption caused by equipment failure and process fluctuation is avoided.

The utility model discloses a water treatment filter tank which comprises a tank body, guide frames are mounted at the tops of two side parts of the tank body, moving blocks are slidably clamped in the two guide frames, a floating object pushing plate is mounted between the tops of the two moving blocks, hanging rings are symmetrically and fixedly mounted at two ends of the moving blocks, and the floating object pushing plate is connected with the hanging rings. A driving motor is arranged on the pool body, mounting seats are symmetrically arranged at two ends of the pool body, a rotating rod is rotatably arranged in the middle of each mounting seat, and winding shafts are symmetrically arranged at two ends of each rotating rod. The floating object pushing plate is pulled to slide along the guide frame, floating object impurities floating on the water surface after backwashing are gathered and cleaned, meanwhile, the adsorption fixing mode between an electromagnetic block and a metal round block is simple and convenient, great convenience is provided for selecting a rotating rod on one side to rotate, and bidirectional movement control over the floating object pushing plate is facilitated.

The utility model relates to a wastewater treatment technology, and discloses a wastewater filtration treatment system for aquaculture, which comprises an aquaculture pond, a coarse filtration structure, a fine filtration structure, a sterilization and disinfection structure, a purified water storage pond and a PLC (Programmable Logic Controller), a hair filter of the coarse filtering structure is connected with an automatic backwashing device, and a first water quality monitoring sensor is arranged on the coarse filtering structure; the fine filtration structure comprises an upper activated carbon adsorption layer, an anthracite filter material layer, a quartz sand filter material layer and a cobblestone filter material layer, a second water quality monitoring sensor is mounted on the fine filtration structure, the fine filtration structure is connected with the sedimentation tank, a third water quality monitoring sensor and a lifting water pump, and the fine filtration structure is connected with an ozone generator. The ozone generator is provided with an aeration head, the aeration head is connected with the purified water storage pool, the ozone generator is provided with a fifth water quality monitoring sensor, the purified water storage pool is provided with a sixth water quality monitoring sensor and a recycling pump, and the recycling pump is connected with the aquaculture pond.

The invention provides a micro-polluted water purification device and method, and belongs to the technical field of water treatment. The problems that an existing micro-polluted water purification technology is dual-polarized, purification is not thorough, secondary pollution is prone to being generated, and adaptability is poor are solved. The method comprises the following steps: in a pretreatment unit, intercepting large-particle suspended impurities through a bionic cilium type interception structure, and regularly carrying out backwashing; in the bionic primary filtering unit, colloidal particles, microorganisms and macromolecular organic matters are filtered out through a bionic glomerular filtering structure; in the bionic intermediate purification unit, heavy metal ions and small molecular organic matters are adsorbed through a bionic cell membrane adsorption structure; in the bionic deep filtering unit, deep interception and adsorption are carried out through a bionic root system filtering structure; the effluent quality is detected in the effluent unit, and if the water quality does not reach the standard, the effluent flows back to the water inlet end of the pretreatment unit. By means of physical interception and physical adsorption effects of a biological bionic structure and natural degradation of a biological agent, secondary pollution is avoided.

The application belongs to the technical field of water quality filtering of heat exchange equipment, and particularly relates to a filtering device and method for water quality of wave disturbance flow cooling heat exchange equipment, which comprises a primary filtering tank with supporting feet, a primary filtering mechanism is arranged in the primary filtering tank, a backwashing filter is arranged below the primary filtering tank, an aggregation mechanism is arranged between the primary filtering tank and the backwashing filter, and a sterilization mechanism is arranged at the output end of the backwashing filter. The filtering device and method for water quality of wave disturbance flow cooling heat exchange equipment, through the booster pump for pressurizing the spray water entering the metal bellows, the instantaneous high-pressure water flow impacting the metal bellows can generate a longitudinal wave and compression, and then the micro-particles can be compressed into groups, and the two groups of reset ropes relatively reset the metal bellows, so that the spray water and the particles in the water are pushed forward to flow into the backwashing filter, so that the water flow passes through the filtering medium to filter out the solid particles and suspended matters in the water, thereby reducing the operation cost.

The invention relates to the technical field of water treatment, and discloses a filter integrated backwashing system based on reverse osmosis concentrated water reuse and energy recovery, which is characterized in that a gas-liquid injection device is integrated, high-pressure concentrated water discharged by reverse osmosis is used as a unique power source, backwashing fluid is directly output, and a backwashing water pump and a scrubbing fan which are independently arranged in a traditional system are replaced. The system integration complexity is greatly reduced, the installation and debugging workload is reduced, the coordination control problem among multiple devices can be improved, and the system is more compact in structure and more reasonable in layout. Meanwhile, the pressure potential energy of the reverse osmosis concentrated water is directly converted into kinetic energy for driving the backwashing process of the filter, a fan and a water pump which are completely driven by external electric energy in the traditional process are replaced, energy coupling and recycling of the system are realized, and the pressure energy which is originally wasted through energy dissipation is effectively utilized; and the power consumption in a backwashing link is directly reduced, so that the energy utilization efficiency of the system is improved.

The invention relates to the technical field of industrial wastewater treatment, and discloses an advanced oxidation-biological coupling treatment method and system.The method comprises the steps that after the pH value of wastewater is adjusted to be 3-5, Fenton oxidation and photocatalytic oxidation treatment are synchronously conducted in an oxidation reaction tower, the concentration of ferrous sulfate is controlled to be 8-12 mmol / L, the adding amount of hydrogen peroxide is controlled to be 40-60 mg / L, and the pH value of the wastewater is adjusted to be 3-5; irradiating with a 0.4-0.6 W ultraviolet light source, and reacting for 8-16 hours; the pressure is monitored in real time in the process, and safety pressure relief protection is set; after oxidation treatment, the pH value of the wastewater is adjusted to 6.5-8.5, biodegradation is conducted through a fluidized bed or a membrane bioreactor, the air flow of the fluidized bed is controlled to be 1-2 m < 3 > / h, and the membrane bioreactor is subjected to gas-water combined backwashing with the period of 4-12 hours; and finally, the effluent is recycled or discharged after being monitored to reach the standard. The system comprises an adjusting unit, an advanced oxidation unit, a biological treatment unit and an intelligent control unit which are sequentially connected. According to the invention, efficient decomposition and deep purification of refractory organics are realized, the treatment efficiency is high, the operation is stable, and the safety is good.

The invention discloses an automatic backwashing parameter adjusting method for constant-flow ultrafiltration membrane source water filtration equipment, which relates to the technical field of water filtration, and comprises the following steps: initializing a membrane pollution trend parameterized threshold reference in a stable water production stage, adjusting and determining the membrane pollution trend parameterized threshold reference in the stable water production stage, and adjusting and determining the membrane pollution trend parameterized threshold reference in the stable water production stage. A valve opening weight is added to the membrane pollution trend parameterized threshold reference in the stable water production stage, a membrane pollution index trend parameter threshold value based on the valve opening is formulated, a backwashing parameter threshold value used for controlling the physical backwashing process is formulated, and backwashing operation is executed according to the comparison result of the online stable water production stage trend and the backwashing parameter threshold value. According to the automatic backwashing parameter adjusting method for the constant-flow ultrafiltration membrane source water filtering equipment, the opening degree of the valve and the emptying factor of the membrane pool are introduced into a backwashing decision-making mechanism, and the real pollution conditions of the ultrafiltration membrane at different stages and under different conditions of the membrane pollution degree can be better reflected.

The invention discloses an in-situ ultrasonic cleaning and compartment off-line backwashing integrated filtering method and system, and relates to the technical field of solid-liquid separation. The method comprises the stages of filtration, compartment off-line backwashing, in-situ ultrasonic cleaning and sludge treatment, wherein during filtration, impurities in sewage are intercepted by a filter element, and purified water is discharged; the backwashing can be used for purifying water for a single unit and an intercepting system or supplying water by an external water pump, and reversely washing and removing impurities; ultrasonic cleaning excites a cavitation effect through a vibration plate, scales and deep impurities of the filter element are stripped in situ, and the ultrasonic cleaning and backwashing are carried out in a peak shifting manner; and the sludge is pumped and discharged to the solid-liquid separation device regularly. The system comprises a backwashing pipeline, a purified water outlet system, a filter unit assembly, an ultrasonic cleaning device and an electric control device. According to the invention, single-chamber off-line backwashing can be realized without additional complex equipment, non-stop continuous operation of the system is realized, a high-efficiency environment-friendly method is adopted for descaling, the adaptive scene is wide, the automation degree of the system is high, and long-term stable operation of attended operation and unmanned operation can be realized.