579 results about "Water reclamation" patented technology

The invention relates to the technical field of water resource purification, in particular to a control method and equipment of a reverse osmosis water purification system.The control method comprises the steps that firstly, on the fluctuation dimension of the pre-membrane pressure, the adjusting requirement of the frequency of a high-pressure pump is preliminarily determined on the dimension of the pre-membrane pressure according to an obtained pressure fluctuation index; determining a membrane resistance increase factor representing the pollution state of the reverse osmosis membrane on the basis of the transmembrane pressure difference on the dimension of separation function failure of the reverse osmosis membrane; finally, a membrane separation abnormal value is comprehensively represented by combining a pressure fluctuation index and a membrane resistance increase factor, and a purified water recovery rate is introduced to a membrane separation result end, so that the finally obtained frequency reduction demand degree is more accurate, and the control effect of the reverse osmosis water purification system is improved; therefore, the stable, efficient and sustainable operation of the reverse osmosis water purification system can be ensured while the membrane surface pollutant deposition driving force can be effectively reduced and the membrane pollution speed can be slowed down.

The invention discloses an intelligent control system for construction site water recycling, which belongs to the field of construction site wastewater treatment and comprises a water quality monitoring module, a collection and treatment module, a chemical treatment module, a filtration treatment module, an evaluation and detection module, a clear water recovery module, an analysis and decision module, an interaction report module and a monitoring and early warning module. The system can accurately control the dosage of chemicals, reduce the operation cost, reduce the excessive use of chemicals, reduce the risk of chemical residues after sewage treatment, improve the environmental protection property, improve the accuracy of the treatment effect, improve the operation flexibility of the system, ensure the quick response of the system to the dynamic demand of a construction site, and improve the construction efficiency. Resource waste or system operation interruption caused by manual decision lag is avoided, scientificity and credibility of a system operation strategy are improved, acceptance and implementation of a construction party or a supervision party are facilitated, the comprehensive operation efficiency of the system is improved, and the service life of equipment is prolonged.

The present disclosure discloses a water recycling type greenhouse, including a greenhouse body; a water collection device is arranged in the greenhouse body; the water collection device is provided with an air inlet and an air outlet; a condensation portion and a reheating portion are arranged in the water collection device; and the water recycling type greenhouse further includes an energy supply system. Air in the greenhouse body can be poured into the water collection device from the air inlet, flow through the condensation portion and the reheating portion in sequence, and finally be discharged into the greenhouse body again from the air outlet. When the heated air is discharged into the greenhouse body again, a decrease of the temperature of the greenhouse is not likely to occur, and normal growth of plants is not easily affected.

The invention provides a rainwater and wastewater recycling system for a construction site, and relates to the technical field of rainwater collection, the rainwater and wastewater recycling system comprises an underground water well, a water collecting tank is arranged at the upper end of the underground water well, a center shaft is installed at the circle center of the underground water well, and the water collecting tank is rotatably installed on the surface of the center shaft through a bearing; an unfolding assembly is arranged at the top of the water collecting tank, the water spraying rods can be unfolded and folded through the unfolding assembly, in the unfolding state, the plastic cloth between the two water spraying rods can be unfolded to form an umbrella-shaped structure, and rainwater flows into the water collecting tank through the surfaces of the different plastic cloth; impurities and soil in rainwater are filtered in the space formed by the interlayers in the water collecting tank, then the rainwater is collected by the underground water well, when the water spraying rod is folded, the rainwater collected in the underground water well can serve as dust falling spraying water to be conveyed to the water spraying rod, rainwater collection and recycling are achieved, and the device is convenient to install and suitable for a construction site.

The invention relates to the technical field of building engineering, in particular to a coupling carbon reduction optimization method for a building water supply and drainage system. The method comprises the following steps: acquiring operation data of a building drainage system; carrying out pump station working condition abnormity analysis based on the building drainage system operation data, and generating pump station working condition abnormity data; extracting a rainwater recovery path according to the building drainage system operation data; performing rainwater recovery pipe network backflow analysis based on the rainwater recovery path to obtain pipe network backflow data; the pipe network bearing pressure is evaluated according to the pipe network backflow data; performing leakage risk assessment based on the pipe network bearing pressure to obtain a pipe network leakage risk; the pump station start-stop times are counted according to the pump station working condition abnormal data; performing water hammer effect analysis according to the start-stop times of the pump station to obtain water hammer effect data; and according to the water hammer effect data and the pipe network leakage risk, identifying a fragile pipe network to obtain fragile pipe network data. The energy efficiency and carbon emission management of the building drainage system are optimized based on the building engineering technology, and the energy-saving and carbon-reducing efficiency is improved.

The invention provides a cleaning device and a cleaning robot. The cleaning device comprises a roller assembly and a mounting frame, the roller assembly is used for washing a surface to be cleaned, the mounting frame is provided with a mounting groove, and the roller assembly is arranged in the mounting groove and rotationally connected with the mounting frame; a water recycling thin cavity is formed in one side of the mounting groove, an opening used for recycling water stains on the working face is formed in the side, close to an opening of the mounting groove, of the water recycling thin cavity, and a plurality of water drainage openings are formed in the side, away from the opening, of the water recycling thin cavity; a sewage inlet communicated with the mounting groove is further formed near the middle of the water recovery thin cavity, a water squeezing block used for squeezing the roller assembly is arranged at the sewage inlet, the water squeezing block is a water scraping strip perpendicular to the roller assembly in the radial direction, and the water squeezing block and the sewage inlet extend in the length direction of the roller assembly. Sewage carried by the roller assembly and residual water stains on the wall surface can be effectively recycled at the same time, and the wall surface cleaning effect is good.

The invention provides a collaborative optimization method and device for a desalted water system and application, and belongs to the technical field of water treatment.According to the method, in the technological process of desalted water, through the synergistic effect of waste heat recovery, intelligent backwashing control, an efficient desalting process and resource recycling, system energy consumption is reduced, the water recovery rate is increased, and the energy consumption is reduced. Wastewater discharge is reduced, and even wastewater zero discharge is achieved. A grey water raw water heat exchanger is arranged at the upstream of the raw water tank, grey water is subjected to heat exchange and cooling through the grey water raw water heat exchanger, and fresh raw water is communicated with the raw water tank after being subjected to heat exchange and temperature rise through the grey water raw water heat exchanger; the raw water tank is connected with the ultrafilter, the downstream of the ultrafilter is connected with the fiber filter, and the fiber filter is connected with the efficient cation bed; the efficient cation bed is connected with a decarburizer which is connected with a middle water tank; the middle water tank is connected with a high-efficiency anion bed which is connected with a mixed bed; the mixed bed is connected with a desalted water tank. The invention solves the problems of high energy consumption, high water consumption and difficulty in wastewater treatment in the traditional process. Zero discharge of wastewater is realized, and the purity of the prepared pure water is higher.

The invention discloses a sponge city road rainwater recycling device which comprises a reservoir, a collecting box used for collecting rainwater is arranged at the top of the reservoir and connected with the reservoir through a water inlet pipe, a filter screen used for blocking is arranged in the collecting box, a guide pipe used for flowing is arranged at the top of the reservoir, and a water outlet pipe is arranged at the bottom of the reservoir. And a spray head is arranged on one side of the guide pipe. The cleaning mechanism is arranged in the collecting box, and the cleaning mechanism is used for cleaning impurities on the filter screen. Relates to the technical field of urban water management, through cooperative arrangement of a collecting box and a filter screen, the situation that the device is blocked during use can be reduced, the collecting box can collect rainwater and block large sundries, and the filter screen can filter small sundries in the rainwater, so that the rainwater can be recycled, and the rainwater can be recycled. And when too many sundries are accumulated, the filter screen can be conveniently taken out to be cleaned or replaced, so that the device can continuously collect rainwater, and the practicability of the device is improved.

The invention belongs to the technical field of sewage treatment, and particularly discloses a method for recycling nitrate radicals by treating high-salinity wastewater through electroactive microorganisms, a microbial electrolysis cell three-electrode single-chamber system is adopted, high-salinity wastewater is used for domesticating and culturing a biological membrane, and the biological membrane has a good nitrate removal effect on nitrate wastewater with the salinity of 1%-3% and can be used for recycling nitrate radicals. For nitrate wastewater with the salinity of 1%-2%, nitrogen can be partially recovered in the form of ammonia, the defect that energy consumption is high when ammonia nitrogen resources are recovered from nitrate wastewater is overcome, the high nitrate removal rate is guaranteed, and meanwhile the defect that nitrate is difficult to recover from high-salinity wastewater is overcome.

The invention relates to the technical field of sea water desalination impurity treatment, and particularly discloses a sea water desalination impurity pretreatment system and technology.The pretreatment technology comprises rough filtration, flocculating settling, filter filtration and ultrafiltration, and the flocculating settling comprises the following steps that S100, the temperature of sea water obtained after rough filtration is detected, and when the temperature is lower than a set temperature interval beneficial to a flocculation reaction, the flocculation reaction is stopped; heating the roughly filtered seawater by using waste heat recovered by evaporating the seawater; s200, conveying the heated seawater to a mixing tank, detecting the temperature of the seawater, and adding a flocculating agent according to the dosage corresponding to the temperature; s300, conveying the seawater mixed with the flocculating agent to a flocculation reaction tank; and S400, conveying the seawater subjected to the flocculation reaction to a flocculation sedimentation tank, measuring concentration data of the flocculation sedimentation tank at different depths, and correcting front-end reaction regulation and control parameters according to the measured data. According to the invention, the temperature influence is regulated in a targeted manner, and meanwhile, a dynamic feedback regulation mechanism based on the flocculating settling effect is established.

The invention discloses a circulating water blow-off water reuse treatment system, and relates to the field of circulating cooling water treatment, the system comprises: an induced crystallization unit, which is used for carrying out primary treatment on circulating water blow-off water through an induced crystallization fluidized bed reactor to remove hardness ions in water; the ceramic membrane filtering unit is used for carrying out secondary treatment on the primarily treated water by utilizing a ceramic membrane device and removing residual hardness ions, organic matters and suspended matters in the water; and the nanofiltration membrane unit is used for performing tertiary treatment on the water by utilizing a nanofiltration membrane according to the secondary treatment result to remove salt and organic matters in the water. According to the method, induced crystallization, ceramic membrane and nanofiltration membrane technologies are combined to cooperatively treat the circulating water and the blow-down water, so that the operation mode of simplifying the process, reducing the energy consumption and prolonging the backwashing period is realized, the dosage of chemicals and the generation of sludge are reduced, and the water recovery rate is also improved, so that the hardness is removed, and the calcium resource recovery is realized.

The utility model discloses a papermaking sewage recovery treatment device which comprises a base, a stirring tank is fixedly connected to the base, a stirring assembly is arranged in the stirring tank, the stirring assembly comprises a first motor, the first motor is highly connected to the middle of the upper end of the stirring tank, the output end of the first motor is fixedly connected with a rotating shaft, and the rotating shaft is fixedly connected with the stirring tank. Stirring blades are fixedly connected to the rotating shaft, a filtering tank is fixedly connected to one side of the base, a filtering plate is detachably connected into the filtering tank, a collecting assembly is arranged in the filtering tank, a discharging opening is formed in the front side of the filtering tank, and a material collecting box is fixedly connected to the lower portion of the discharging opening in the front side of the filtering tank; a drainage pipe is fixedly connected to the rear side of the filter tank, a control table is fixedly connected to one side of the filter tank, and a driving assembly is arranged in the control table and used for driving the collecting assembly. The paper fiber collecting device has the advantages that paper fibers and sewage are rapidly separated and collected through the stirring assembly and the collecting assembly.

The invention relates to the technical field of papermaking, in particular to a paper mill wastewater recycling device which comprises a connecting base, a neutralizing tank, a settling tank and a purifying tank are sequentially arranged on the connecting base from right to left, a stirring structure is connected in the neutralizing tank, a filter screen cleaning structure is connected in the settling tank, and a filter screen cleaning structure is connected in the purifying tank. A plurality of groups of purification cotton are connected into the purification tank, water pumps are connected to the end surfaces of the neutralization tank, the sedimentation tank and the purification tank, a dosing funnel is connected to the end surface of the neutralization tank, and a sewage inlet pipe is connected to the side wall of the neutralization tank. A driving motor in the stirring structure can drive a rotating stirring blade to move up and down while rotating, drive a swinging stirring blade to swing while revolving and drive a moving stirring blade to move left and right while revolving through a transmission structure, so that the stirring efficiency is improved.

The embodiment of the invention provides a drainage recovery control method and system for a multi-source heat supply network. The method comprises the steps that data acquisition equipment is installed on all drainage pipelines before entering a drainage tank of the heat supply network; acquiring temperature parameters, flow parameters and conductivity parameters of each path of hydrophobic water in real time through the data acquisition equipment; and based on the temperature parameter, the flow parameter and the conductivity parameter, comprehensive state judgment of hydrophobic recovery treatment is carried out, and based on a judgment result, dynamic pollution discharge control is carried out. According to the embodiment of the invention, the blow-down valve is opened in a targeted manner through real-time acquisition and layered judgment, so that the mixed hydrophobic parameters are stabilized in a threshold range, and the problem that traditional static control cannot adapt to multi-source parameter differences is solved; and on the basis that pollution discharge is triggered only when parameters exceed the standard, qualified drained water is prevented from being discharged by mistake, and recoverable water resources and waste heat resources are reserved to the maximum extent.

The utility model provides cleaning equipment, a base station and a cleaning system. The cleaning equipment comprises a sewage box, a recovery part, a blow-off pipe and a force application unit. The sewage box is used for storing sewage; the recovery part is used for temporarily storing sewage and is provided with a sewage containing cavity and a sewage opening, and the sewage opening is communicated with the sewage containing cavity and the sewage box; the sewage discharge pipe is communicated with the sewage containing cavity and the outside; the blow-off pipe is a hose; a sewage outlet of the sewage discharge pipe is positioned at one end of the sewage discharge pipe far away from the sewage containing cavity; the force application unit is used for applying an acting force for changing the bending state of the blow-off pipe to the blow-off pipe, so that the blow-off pipe is switched between a non-blow-off state and a blow-off state; in a non-pollution-discharge state, the position height of the pollution discharge port is higher than the position height of the pollution containing cavity, so that the pollution in the pollution containing cavity is prevented from being discharged to the outside; in the sewage discharging state, the position height of the sewage discharging opening is not larger than that of the sewage containing cavity so that sewage in the sewage box can be discharged to the outside, the sewage discharging effect can be optimized through the change of the height of the sewage discharging opening, and the blocking risk is reduced.

The invention provides a device for simulating brine-sediment migration characteristics of a salt-cavern gas storage under the action of air pressure rise and fall and a test method. The simulation test device comprises a gas injection system, a simulation salt cavity, a gas production system, a brine discharge system, a temperature regulation and control system and a pore pressure measurement system. The gas injection system is connected with the simulated salt cavity through a gas injection pipe; the gas production system is connected with the simulated salt cavity through an exhaust pipe; the simulated salt cavity and the brine recovery device are connected through a simulated brine discharging pipe and a water discharging pipe; and the temperature regulation and control system and the pore pressure measurement system are connected with the simulated salt cavity through pipelines. The test device is reasonable in design, through an indoor simulation test, the brine and sediment migration rule under the free sinking condition, the sediment gap structure evolution rule under the self-weight compaction effect and the brine and sediment secondary migration rule under gas injection and production can be researched, and reference is provided for reasonable setting of injection and production operation parameters of the salt cavern gas storage.

The utility model discloses a composite filtering water treatment system for wet spunlace, which comprises an air flotation reaction system, a middle water tank, a sand filtering tank filtering system, a micro-nano filtering system and a clean water barrel for production, the air flotation reaction system, the middle water tank, the sand filter tank filtering system, the micro-nano filtering system and the clean water barrel for production are sequentially connected through pipelines; the air flotation reaction system is connected with a production water recovery pipeline, and the middle water tank is connected with a raw water pipeline. According to the composite filtered water treatment system for wet spunlace, the wastewater treatment efficiency is improved, zero discharge of wastewater is achieved, the environmental influence is reduced, water resources are saved, and the production cost is reduced. And meanwhile, the quality of non-woven fabric products is improved.

The invention discloses a method for recycling process water in an APT (ammonium paratungstate) production process, and relates to the field of water recovery in an APT production process, and the method comprises the following steps: S1, recycling wastewater of an alkali extraction system; s2, evaporating strip liquor and recovering ammonia water; s3, chemical treatment of pure ammonium tungstate evaporation ammonia water; s4, ammonium molybdate evaporation ammonia water closed-loop utilization; and S5, recycling ammonia gas in a crystallization section. According to the method, the recovery rate of tungsten and molybdenum in the tail liquid is remarkably increased by optimizing the processes of wastewater reuse of the alkali extraction system, strip liquor evaporation, ammonia water recovery and the like; one part of the tail liquid is recycled in the pulping process, the other part of the tail liquid is subjected to evaporation treatment, zero emission of wastewater is achieved, evaporated condensate water can be recycled to be used for preparing a stripping agent, the utilization rate of water resources is further increased, the production cost is reduced, and meanwhile the environment-friendly requirement is met.

The utility model discloses a nickel-based water recovery waste water utilization device capable of improving production stability, which belongs to the field of nickel-based water recovery waste water utilization, and is characterized in that a mounting frame is arranged at the corner of the side wall of a collecting box, a fixed frame is erected at the upper end of the collecting box, and a mounting block matched with the mounting frame is arranged at the corner of the fixed frame; the fixed frame and the mounting block are fixed on the mounting rack through bolts; a filter screen cover is arranged in the fixed frame, a plurality of magnetic suction plates are arranged in meshes of the filter screen cover, and a drawer type cleaning plate is inserted into a groove in the side wall of the fixed frame. The collection and utilization of wastewater can reduce emission and improve the utilization rate of water resources. The wastewater is subjected to dual treatment, impurities are filtered firstly, and then ferromagnetic substances are removed by a magnetic plate, so that the quality is ensured. The device is provided with a handle and an anti-skid rubber strip, so that movement and safe operation are facilitated. The drawer type cleaning plate is convenient for regular cleaning, and high-efficiency operation is kept. The recovered wastewater reduces production cost, reduces environmental pollution, and meets environmental protection requirements.

The utility model discloses a sodium fluosilicate sewage treatment system, which is characterized in that sodium fluosilicate wastewater is subjected to fluorine removal and phosphorus removal, then sodium carbonate or sodium hydroxide is added, SO4 < 2-> in the wastewater is converted into a sodium sulfate solution, the wastewater is subjected to hardness removal treatment, then is subjected to ultrafiltration and nanofiltration membrane filtration, concentrated water containing the sodium sulfate solution is recovered to a sodium sulfate collection tank, and the sodium fluosilicate sewage is obtained. Produced water is recycled as replenishing water of the device, so that zero discharge of sewage can be realized.

The utility model discloses a yellow wine in-situ circulating cleaning system which comprises a tap water main pipe, an alkali liquor tank, a clear water tank and a conveying pump. The alkali liquor tank and the clear water tank are connected to a tap water header pipe; the tap water header pipe is connected to the clear water tank, the hot water tank, the hot alkali tank and the recovery water tank respectively; the alkali liquor tank is connected with the hot alkali tank; the clean water tank, the hot water tank, the hot alkali tank and the recovery water tank are respectively connected to the main conveying pipe; the main conveying pipe is connected with the spiral pipe type heater; the output pipe is respectively connected to water inlets of the rice soaking water recovery tank, the distiller's yeast section recovery tank, the pre-brewing fermentation section recovery tank and the seriflux recovery tank; water outlets of the rice soaking water recovery tank, the distiller's yeast section recovery tank and the brewing pre-fermentation section recovery tank are connected to the circulating pipe; and the water outlet end of the circulating pipe is respectively connected to water inlets of the clear water tank, the hot water tank, the hot alkali tank and the recovery water tank. According to the utility model, the cyclic utilization of water is realized, florae in the tank body and the pipeline can be cleaned and sterilized, and the brewing quality of yellow rice wine is ensured.

The utility model relates to the technical field of rainwater recycling, in particular to a hill and mountain stepped multi-span greenhouse rainwater recycling system which comprises a greenhouse, a rainwater tank, a downpipe, a low-level reservoir, a filter tank, a high-level reservoir, a ground recycling ditch and a stack retting tank. Rainwater enters the low-level reservoir along the downpipe, the rainwater is filtered through the filter tank, the rainwater entering the low-level reservoir is transferred into the high-level reservoir to be stored, rainwater on the ground near the greenhouse is recycled through the ground recycling ditch, the rainwater is filtered through the filter tank, and the rainwater enters the low-level reservoir. And the rainwater is transferred into the high-level reservoir for storage, so that the problems that the rainwater runoff is fast and the rainwater is difficult to collect in a centralized manner due to topographic relief of the existing rainwater recovery equipment in hills and mountains are solved.

The utility model discloses a concrete waste slurry water recycling device which comprises a bin body, the top of the bin body is arranged at the horizontal position of the ground, a notch is formed in the top of the bin body, the bin body communicates with the screening bin, and a vibrating screen is arranged in the screening bin and connected with a motor; the lower portion of the screening bin is connected with a lifting pipe, the lifting pipe is connected with a separator, the lower portion of the separator is connected with an inlet pipe, and the inlet pipe is connected with a storage tank. Concrete waste slurry is subjected to three-stage separation, coarse particles, sand and the like are subjected to primary separation through filtration, a mixture of fine particles and water is subjected to secondary separation through vibration, finally, superfine particles which cannot be separated from the slurry are subjected to three-stage separation through a centrifugal machine, and recycling and reusing are facilitated.

This device for recovering water from organic substance-containing drainage water recovers water by treating drainage water that contains a volatile organic substance or a low-molecular-weight organic substance having a molecular weight of at most 200, and comprises a separation membrane module 2 for subjecting the drainage water to a pervaporation treatment by using a separation membrane having a pore diameter of 3.0-4.2 Å, wherein treated water from which the organic substance has been removed by the separation membrane module 2 is recovered.

The utility model discloses a mining wastewater and sewage recovery treatment system which comprises a primary sedimentation tank, a sewage treatment tank and a waste storage tank, a first partition wall is arranged between the primary sedimentation tank and the sewage treatment tank, a second partition wall is arranged between the sewage treatment tank and the waste storage tank, the primary sedimentation tank is communicated with the sewage treatment tank, and the waste storage tank is communicated with the sewage treatment tank. An overflow tank is arranged in the sewage treatment tank, a secondary sedimentation tank is formed around the overflow tank, the sewage treatment tank and the overflow tank are in a shape like a Chinese character'hui ', and the overflow tank is connected with an external sewage treatment system through a pipeline; when in use, the mine wastewater and sewage recovery treatment system can ensure that construction water is circularly purified and used, saves resources, reduces dependence on external water sources, can also prevent sewage from being discharged to influence the environment, has good economic benefits and social benefits, and is suitable for popularization and use.

This invention discloses a waste heat recovery and reuse device for sheet metal, belonging to the field of wastewater treatment technology. It includes: a base, a cylindrical body fixedly installed at the center of the top of the base, a heat exchange component installed on the top of the cylindrical body, a filtration mechanism installed in the inner cavity of the cylindrical body, and a drain outlet installed inside the base. This waste heat recovery and reuse device for sheet metal includes a spiral cooling pipe that discharges the cooled wastewater to the top of a conical water guide platform. The conical water guide platform, by its shape, can evenly guide the wastewater onto an arc-shaped filter platform. There are five sets of arc-shaped filter platforms, so the wastewater flows sequentially from top to bottom onto the five sets of arc-shaped filter platforms. When the wastewater flows through the arc-shaped filter platforms, the filter tank filters the residue in the wastewater. Because the filtration width of the filter tank increases sequentially from top to bottom, the filter tank can filter residues of different sizes, improving the filtration efficiency.

The invention discloses a heavy metal pollution bottom mud treatment wastewater recovery device, and relates to the technical field of sludge wastewater treatment equipment, the heavy metal pollution bottom mud treatment wastewater recovery device comprises a filter unit, the filter unit comprises a plurality of filter pipe groups, a rotating shaft and two connecting assemblies, the two ends of each filter pipe are provided with adsorption rings through guide rods, and the plurality of filter pipe groups are connected to the peripheral side of the rotating shaft; the connecting assemblies are located at the two ends of the filter pipe set, a plurality of communicating channels are formed in the connecting assemblies, an adsorption part is arranged on a channel opening of each communicating channel, the two ends of the rotating shaft are connected to the two main bodies respectively, and the rotating shaft rotates to enable the polluted filter pipes to move to the position of the backwashing channel and enable the clean filter pipes to move to the position of the wastewater filter channel. When the filter pipe is switched to be polluted, the backwashing communication pipeline flushes the switched polluted filter pipe for standby application, and wastewater is re-introduced into the wastewater filter channel and the switched clean filter pipe, so that the device recovers normal operation, and the problem that the recovery device is difficult to operate normally due to backwashing of the filter pipe is avoided to a great extent.

The invention relates to the technical field of thermal power generation direct-current cooling water systems, in particular to a thermal power generation tail water recycling device which comprises a water inlet pipe, a drainage valve is communicated in the water inlet pipe, and one end of the drainage valve is communicated with a water outlet pipe. The end, away from the drainage valve, of the water outlet pipe communicates with a cooling assembly used for cooling water in the water inlet pipe, a floating ball is arranged in the cooling assembly, and the cooling assembly communicates with a plurality of conveying pipelines. A drainage pipe is arranged at the other end of the drainage valve and internally provided with a power supply assembly for supplying power to the cooling assembly; a control assembly fixedly connected to the cooling assembly and used for controlling the opening degree of the drainage valve is installed in the water inlet pipe, the control assembly is fixedly connected with the floating ball, and the power supply assembly is electrically connected with the cooling assembly. By means of the structural design, direct flow cooling water can be effectively recycled and conveyed into a circulating cold area system, it is avoided that the direct flow cooling water is directly discharged into a water body, and therefore a large amount of water resources are saved, and the tail water recycling efficiency is improved.

This invention relates to the field of energy conservation and consumption reduction in chemical plants, specifically to a method for the combined utilization of low-temperature waste heat from a CHPPO unit and a phenol-acetone unit. The method involves setting up multiple circulating branches connecting different heat sources and heat traps within the CHPPO and phenol-acetone units. The large amount of low-temperature waste heat generated by each heat source within the units is recovered and enriched through a heat transfer medium (water) for heating low-temperature materials within the units. This replaces the low-pressure steam originally required for heating the heat traps, improving the plant's energy efficiency and reducing energy consumption and heating costs in production. Based on the different operating conditions of the units at the initial and final stages, each heat exchange component of each branch is controlled and adjusted holistically, rationally planning and utilizing the low-temperature waste heat of each unit, reducing heat loss directly discharged into the environment, and achieving the overall goal of energy conservation, consumption reduction, cost reduction, and efficiency improvement in the production unit.

The utility model provides a purified water recycling and filtering device, and relates to the technical field of purified water recycling and filtering devices, the purified water recycling and filtering device comprises a mounting plate, an ultrafiltration element and a fixing plate, the surface of the ultrafiltration element is provided with an electromagnetic valve, one end of the ultrafiltration element is fixedly provided with a constant-pressure water pump, and the lower surface of the constant-pressure water pump is fixedly provided with a mounting frame; a mounting block is fixedly mounted at the output end of the constant-pressure water pump, and a water tank is fixedly mounted on the side face of the mounting block. In the device, by arranging the mounting block, the placement box, the limiting block, the limiting rod, the push plate and the spring A, a worker can select corresponding purification materials according to different harmful substances in treated wastewater; the problems that filtration can only be carried out through a single ultrafiltration element, some special harmful substances need to be treated again, the wastewater treatment efficiency is reduced, the application range of different wastewater treatment is reduced, and practicability is high are solved.