921 results about "Water reclamation" patented technology

The invention provides an artificial groundwater recharge system and method based on roof rainwater collection, and relates to the technical field of groundwater recharge. The system comprises a rainwater recycling unit, a rainwater purifying unit and a rainwater recharging unit which are connected in sequence, and the rainwater recycling unit is used for collecting roof rainwater; the rainwater purifying unit is used for purifying the collected rainwater, and the rainwater recharging unit is used for inputting the purified rainwater into an underground aquifer. A set of feasible manual supply and recharge technical system is constructed, and various aspects of manual supply are organically integrated and connected, so that the water quality of recharged rainwater can be improved, the underground water supply quality is effectively ensured, the supply efficiency of a manual supply project can be maintained or improved, and the blockage risk is reduced; the time for keeping high-efficiency recharge of manual supply is prolonged, and then the recharge water amount is increased.

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 provides a system and method for recharging underground water by coupling urban rain and flood resources, and belongs to the technical field of underground water recharging. The system comprises a roof rainwater recycling mechanism, a road surface rainwater recycling mechanism, a regulating reservoir, a rainwater purifying mechanism, a rainwater recharging mechanism and the like. Coupling collection of road surface rainwater and roof rainwater is achieved, the roof rainwater recycling mechanism and the road surface rainwater recycling mechanism both have the flow discarding function, so that the collected rainwater is relatively clean, the quality of recharged rainwater can be improved through further treatment of the rainwater purification mechanism, and the groundwater supply quality is effectively guaranteed. According to the system, the combination effect of all units is good, comprehensive rainwater collection and more scientific utilization of collected rainwater can be achieved, and a new thought is provided for rainwater and flood resource reutilization.

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 invention belongs to the technical field of coking high-temperature condensed water recycling, and discloses a high-temperature condensed water recycling device which comprises an expansion tank with a condensed water ingress pipe welded to the inner wall of one side of the bottom, and a first liquid discharge pipe welded to the bottom of the inner wall of one side of the expansion tank. A negative pressure exhaust pipe is welded to the position, over the first liquid drainage pipe, of the expansion tank, a blow-off pipe is welded to the axis of the bottom of the expansion tank, and a blow-off assembly is arranged on the inner wall of the bottom of the expansion tank. The flowing low-temperature gaseous working medium and the high-temperature condensed water are used for heat exchange treatment, the temperature of the high-temperature condensed water can be effectively reduced, the cooled high-temperature condensed water is sent to downstream users to achieve heat recycling, and the heated gaseous working medium can drive the generator to rotate to achieve power generation treatment; and in addition, the high-temperature liquid working medium recycled in the middle process can be used for heat exchange, so that the heat of the high-temperature condensed water can be fully recycled.

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 relates to a ship cleaning vehicle water recovery water tank in the technical field of sewage treatment, which comprises a tank body, the interior of the tank body is divided into a recovery cavity and an equipment cavity, a water-gas dual-purpose pump is mounted in the equipment cavity, a sewage treatment mechanism is arranged at the bottom in the recovery cavity, and the sewage treatment mechanism comprises an outer filter cartridge and an inner filter cartridge arranged in the outer filter cartridge. A circulation cavity is formed between the inner wall of the outer filter cylinder and the outer wall of the inner filter cylinder, a treatment part is arranged in the circulation cavity, the treatment part penetrates through the bottom of the inner filter cylinder and extends into the inner filter cylinder, the treatment part comprises a hollow disc and a plurality of L-shaped pipes which are arranged in the circulation cavity, and air injection hole groups are formed in the outer walls, close to the outer filter cylinder, of the L-shaped pipes. According to the invention, sewage filtration and aeration are carried out in a dual continuous alternate manner, and meanwhile, filter cartridge cleaning and filtration are carried out alternately and synchronously, so that the sewage treatment effect and efficiency are ensured.

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 discloses a treatment process of photovoltaic cell production wastewater, and relates to the technical field of industrial wastewater treatment. Comprising the following steps: treating dilute acid and dilute alkali through a reclaimed water recovery membrane system to obtain first produced water and reclaimed water concentrated water; treating the concentrated acid wastewater and the reclaimed concentrated water through a fluorine-calcium crystallization system to obtain defluorinated concentrated water and calcium fluoride crystals; treating the RO concentrated water and the defluorinated concentrated water by a hardness removal recycling system to obtain hardness-removed concentrated water and second produced water; treating the concentrated alkali wastewater through an alkali recovery membrane system to obtain purified alkali and alkali-removed concentrated water; hardness-removed concentrated water and alkali-removed concentrated water are treated by a comprehensive physicochemical system, and then are sequentially treated by a high-power concentration membrane system and a zero-discharge crystallization system to obtain solid wastes. The photovoltaic cell production wastewater treatment process provided by the invention achieves an economical and feasible zero-emission solution.

To provide a reefer container which has high cooling efficiency, low running costs and is easy to maintain. [Solution] The reefer container 1 comprises a container body 2 for storing and preserving fruits and vegetables, a cooling device 3 for cooling the inside of the container body 2, a water recovery means 4 for recovering water condensed inside the container body 2, and a curing unit 5 for curing the contents stored inside the container body 2. The cooling device 3 is configured to cool the inside of the container body 2 by passing sucked-up air from bottom to top through a heat exchange member 10 that stores cooled moisture to turn it into low-temperature, high-humidity air, and by allowing the low-temperature, high-humidity air to flow downward from top to bottom.

The invention discloses a tunnel anti-crack maintenance system design method, an anti-crack maintenance system and a construction method, and the method comprises the following steps: design preparation: obtaining tunnel parameters and indexes, including tunnel length, construction progress, maintenance time requirement, pedestrian crossing spacing distance, ventilation facility installation condition, water supply facility installation condition, and temperature and humidity inside and outside a tunnel hole; determining the position of a sub-maintenance system; designing a ventilation device of the maintenance system according to the installation condition of ventilation facilities in the tunnel hole, including designing a ventilation pipeline line; a circulation device of the maintenance system is designed according to the installation condition of water supply facilities in the tunnel hole, arrangement design of a water circulation pipeline and a reclaimed water recovery device is included, and an arrangement diagram is drawn; calculating a turnover period and a turnover distance; a humidifying device is designed, the humidifying device comprises a humidifying material sheet made of a wet film, water is supplied to the humidifying device through a circulating device, and a ventilation device is used for humidifying external air through the humidifying device; and calculating the optimal wind speed and circulating water temperature.

The utility model discloses a sedimentation tank for recycling sludge water, and relates to the technical field of sewage treatment. The utility model provides a sedimentation tank for recycling sludge water, which can adjust the height of a suction pipeline according to the liquid level of clear water. A sedimentation tank for sludge water recovery comprises a supporting frame, the supporting frame is fixedly connected with a sedimentation barrel, the sedimentation barrel is fixedly connected with a water pumping pipe, the water pumping pipe is slidably connected with a sliding pipe, the sliding pipe is located in the sedimentation barrel, one side, close to the water pumping pipe, of the sedimentation barrel is fixedly connected with an electric push rod, and the telescopic end of the electric push rod is fixedly connected with a connecting rod. The connecting rod is connected with the sliding pipe. After sewage is guided into the precipitation barrel and a flocculating agent is added to settle and precipitate impurities, clear water at the upper part in the precipitation barrel is sucked through the sliding pipe, and when the clear water is pumped, the electric push rod can be controlled to stretch according to the water level of the clear water, so that the sliding pipe is driven to slide up and down through the connecting rod to adjust the position, and muddy water under the bottom is prevented from being pumped.

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 utility model discloses a cyclamen U-shaped groove type irrigation device which comprises a cultivation groove, a fertilizer and water supply and discharge pipeline and a nutrient solution supply and recovery device. The cultivation groove comprises a plurality of rows of U-shaped water grooves, potted plants are placed on the upper portions of the U-shaped water grooves, and nutrient media are placed on the lower portions of the U-shaped water grooves. The fertilizer and water supply and discharge pipeline comprises a liquid supply pipeline and a liquid discharge pipeline; a liquid supply valve and a liquid discharge valve are respectively arranged on the liquid supply pipeline and the liquid discharge pipeline; the nutrient solution supply and recovery device comprises a fertilizer applicator and a secondary fertilizer water storage tank, the fertilizer applicator comprises a fertilizer storage tank and a microcomputer control host, the fertilizer storage tank supplies liquid to the cultivation grooves through a liquid supply pipeline, and the secondary fertilizer water storage tank is connected with a liquid discharge pipeline. By means of the mode, accurate supply of fertilizer and water, secondary recovery, storage and cyclic utilization of the fertilizer and water can be achieved, diseases and insect pests and root rot are reduced, fertilizer and water irrigation is completed in the recyclable cultivation groove, production efficiency and fertilizer and water supply quality are improved, growth consistency of potted plants is improved, fertilizer and water loss is reduced, and environment friendliness is achieved.

The utility model discloses a sewage recycling device for a tunnel shield tunneling machine, which comprises a sewage pool, a sewage cavity is formed in the sewage pool, and the sewage cavity is used for standing of separated sewage; the clean water tank is located on one side of the sewage tank, a clean water cavity is formed in the clean water tank, a partition plate is arranged between the clean water cavity and the sewage cavity, a filter plate is arranged in the middle of the partition plate, and the clean water cavity is communicated with the sewage cavity through the filter plate; the filter press is mounted on the sewage pool through a bracket, and the output end of the filter press extends into the sewage cavity through a pipeline; the acid-resistant DN50 pneumatic diaphragm pump is mounted at the shield tail and is responsible for pumping sewage at the shield tail and pumping and discharging accumulated sludge into the filter press for solid-liquid separation, and the sludge is compressed under high-strength extrusion, so that the sludge is prevented from being loaded and transferred again, and the transportation cost of sludge blocks is reduced.

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 utility model relates to a metal modification treatment wastewater recycling treatment device which comprises a settling tank, a wastewater pipe and a water storage tank, a communicating pipe is communicated between the settling tank and the water storage tank, a plurality of flow dividing pipes are distributed in a tank plate, the bottoms of the flow dividing pipes extend to the bottom of the settling tank, and a flow slowing tank is mounted on the upper surface of the tank plate. A collecting pipe is fixedly connected to one side of the outer part of the slow flow box, wastewater in the slow flow box is shunted and injected into the settling box through a plurality of shunting pipes, and the time that the settling box is filled with the wastewater is shortened, so that metal particles mixed in the wastewater can be settled at the bottom, and floating impurities in the wastewater are conveniently filtered in cooperation with a filter screen; and the secondary filtration of the obtained supernatant liquid is realized, so that the supernatant liquid subjected to secondary filtration can be continuously injected into the water storage tank through the communicating pipe and then is guided into the next treatment process through the water guide pipe, the pretreatment before wastewater treatment by a medicament is realized, and the wastewater recovery treatment effect is improved.

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 utility model relates to the technical field of rainwater recycling, and discloses an energy-saving and environment-friendly rainwater recycling device for roof reconstruction, which comprises a collecting tank, the top end of the collecting tank is fixedly connected with a water bucket, one end of the collecting tank is fixedly connected with a motor, and the output end of the motor is fixedly connected with a threaded transmission rod through a coupler. And one end of the threaded transmission rod is in threaded connection with a push block, the top end of the collecting groove is fixedly connected with a waterproof shell, a sliding rail is arranged in the waterproof shell, and the front face of the sliding rail is movably connected with the push block. The energy-saving and environment-friendly rainwater recycling device for roof transformation has the effect of prolonging the service life of the device, rainwater is pushed into a water outlet through a push block, so that the rainwater cannot stay in a collecting tank, and by pushing all the rainwater into the water outlet, the water accumulation time can be shortened, the situation that the rainwater stays in the collecting tank for a long time is reduced, and the service life of the device is prolonged. The problems of water quality reduction, biological proliferation, corrosion of storage facilities and the like are possibly caused.

The utility model relates to an ultrasonic integrated calcium and magnesium removal-saline water recovery device. The device comprises a calcium removal unit, a magnesium removal unit and a saline water recovery unit which are connected in sequence, wherein each unit comprises a stirring paddle type or ultrasonic mixer and a filter. The wastewater is pumped to a calcium removal unit by a booster pump and reacts with additional sodium carbonate to generate calcium carbonate precipitate, and calcium removal is completed after solid-liquid separation; the filtrate enters a magnesium removal unit and reacts with additional sodium hydroxide to generate magnesium hydroxide precipitate, and magnesium removal is completed after solid-liquid separation; the filtrate enters a saline water recovery unit to react with additional hydrochloric acid, redundant sodium carbonate and sodium hydroxide are consumed and converted into sodium chloride, and the sodium chloride enters a saline water collection tank for standby application after being filtered. The whole set of equipment provided by the utility model has a series of advantages of small occupied area, high automation degree, low equipment investment, low operation and maintenance cost and the like, is simple in process and good in effect when being used for treating wastewater, and can recycle water resources and save the purchase of industrial salt at the same time.

The invention discloses a dechlorination system capable of realizing zero emission of desulfurization wastewater, which relates to the technical field of pollutant control of coal-fired power plants and comprises an alkali liquor injection device, a tail gas treatment device, a desulfurization wastewater recovery treatment device, a flue gas waste heat recovery device and an alkali liquor injection device. According to the dechlorination system capable of realizing zero discharge of the desulfurization wastewater, effective removal of target pollutants is realized, the reduced desulfurization wastewater and a basic solution are mixed in the sedimentation tank, precipitates in the desulfurization wastewater can be effectively removed, and then clear liquid at the upper part of the sedimentation tank is sprayed into a flue gas pipeline, so that the desulfurization wastewater is completely discharged. Suspended solids and soluble solids in the wastewater form fine solid particles after being heated by high-temperature flue gas, the fine solid particles enter an electrostatic dust collector under the entrainment action of airflow and are captured and removed by electrodes, precipitates are further subjected to solid-liquid separation through a filter press, waste liquid is recycled to a sedimentation tank, and finally efficient desulfurization wastewater zero discharge is achieved. The environment-friendly requirement is met; the economical efficiency and the operability are relatively high.

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 invention relates to the technical field of sewage treatment, in particular to a sewage recycling treatment device and method.The sewage recycling treatment device comprises a grating filtering unit with the right end inclined downwards, a spiral conveying unit is installed on the grating filtering unit and comprises a rotating shaft, and spiral blades are fixedly installed on the outer side of the rotating shaft; a plurality of spirally arranged extrusion units are installed in the middle of the rotating shaft, a shearing unit and a crushing unit are sequentially installed on the rotating shaft and located on the right side of a spiral blade from left to right, and the extrusion units are used for dehydrating pollutants; the sewage treatment device is used for recycling and reusing sewage, long rod-shaped pollutants can be sheared, meanwhile, large blocky pollutants can be crushed, then the sewage recycling efficiency is ensured, blockage caused by pollutant accumulation is prevented, meanwhile, the pollutants can be thoroughly dehydrated, and the sewage treatment efficiency is improved. And secondary pollution of residual moisture in pollutants to the environment is prevented.

In some embodiments, a method may include reducing the microbial load in contaminated water of water recycle loops. These water recycling loops may include pulp and paper mills, cooling towers and water loops, evaporation ponds, feedstock processing systems and / or non-potable water systems. The methods may include providing a peracetate oxidant solution. The peracetate solution may include peracetate anions and a peracid. In some embodiments, the peracetate solution may include a pH from about pH 10 to about pH 12. In some embodiments, the peracetate solution has a molar ratio of peracetate anions to peracid ranging from about 60:1 to about 6000:1. In some embodiments, the peracetate solution has a molar ratio of peracetate to hydrogen peroxide of greater than about 16:1. The peracetate solution may provide bleaching, sanitizing and / or disinfection of contaminated water and surfaces. The peracetate oxidant solution may provide enhanced separation of microbes from contaminated water.