83results about How to "Water quality up to standard" patented technology

The invention discloses a landscape water quality online early warning system which comprises a landscape water quality online monitoring system, a data center and a main control computer. The landscape water quality online monitoring system is used for monitoring landscape water quality data and performing data transmission with the data center; the data center is used for controlling the landscape water quality online monitoring system and storing water quality data sent back by the landscape water quality online monitoring system; the main control computer processing data in a database at any time by calling and operating a functional module, and realizing the analysis and management of online monitored water quality data; and when water quality is worsened, the main control computer performs forecasting and early warning, and puts forward a contingency plan according to early warning situations. The variation trend of water quality can be mastered through the landscape water quality online early warning system, the water quality worsening trend can be early warned in time, the water environment quality of urban landscape water body is guaranteed, and scientific basis and technical support are provided for the effective analysis and management of water quality data during the running process of landscape water body.

Disclosed is an automatic control sewage treatment system with variable process and treating capacity. The system is characterized in that each group of sewage treating pond is divided into five cases, namely a regulating tank, a materialization tank, an anaerobic tank, an aerobic tank and a precipitation filter tank, in the same engineering project, a plurality of sewage treatment processes can be comprehensively utilized, due to the fact that 'methods are applied according to situation', sewage can be effectively treated, effluent water quality can reach the standard, one group or a plurality of groups of sewage treating ponds which are parallelly combined are utilized to treat the sewage simultaneously so as to adapt to the change of sewage treating capacity, the problem that a second-stage construction or a new project is required to be prepared caused by addition of treating capacity is solved, and extra investment is saved. According to the automatic control sewage treatment system with the variable process and treating capacity, a full process of sewage treating is automatically monitored and controlled, the treating time is saved, accurate treating data is obtained, on the premise of the lowest operating cost, the best treating effect is obtained, and the long-term stable operation of the sewage treating project can be guaranteed. Compared with conventionally sewage treating processes, the system has the advantages that the operating cost can be reduced by 30%-50%, the land can be saved by about 50%, and the one-time investment can be saved by about 30%.

The invention relates to a low-temperature low-pressure desulfurization wastewater evaporation treatment device and process. The device comprises a flue gas treatment system and an evaporation and crystallization system, wherein in the evaporation and crystallization system, flue gas form a dust collector is utilized to heat the circulating wastewater; a high-pressure atomizing nozzle and an air washer are arranged in an evaporator and are respectively used for atomizing the heated wastewater and washing steam; wastewater supernate is utilized to condense the generated steam; and the evaporated and concentrated slurry is sprayed into a flue duct after an air preheater, is evaporated and crystallized, and is removed by the dust collector. The device can be used for purifying power plant desulfurization wastewater and similar sewage. The related flash evaporation condition is a low-temperature low-pressure state, so that corrosion of wastewater for the evaporation system can be greatly reduced, the equipment is effectively prevented from scaling and slagging, the energy utilization is improved by utilizing the flue gas treatment system, salt and water separation can be achieved for a final product, and zero emission of desulfurization wastewater can be realized.

The invention relates to a methanol and C4-to-olefin quenched water and washing water airtight coupling treatment method and device. The methanol and C4-to-olefin quenched water and washing water airtight coupling treatment method provided by the invention comprises the following steps: (a) carrying out rotational flow purification on reaction gases on the tops of a quenching tower and a C4 quenching tower so as to remove catalyst particles and liquid hydrocarbon entrained in the reaction gases, and washing the purified reaction gases by using water so as to improve the quality of the washing water; (b) carrying out liquid-solid separation and concentration on quenched water containing catalyst particles at the bottoms of the quenching tower and the C4 quenching tower, carrying out heat exchange on the separated and purified quenched water, and then returning the quenched water to the quenching tower so as to recycle the quenched water; (c) carrying out drying treatment on the separated and concentrated catalyst, and recycling the catalyst particles; (d) carrying out rotational flow oil removal on the washing water serving as feedstock of a stripping tower, purifying the washing water, and recycling sump oil entrained in the washing water, so that the quality of the water purified by the stripping tower reaches the standard. The invention also provides the methanol and C4-to-olefin quenched water and washing water airtight coupling treatment device.

The invention discloses a method for recovering sodium chloride and glycerol from high-salt glycerol-containing high-depth organic wastewater. The method comprises the steps of complexing, carrying out nanofiltration to desalt, evaporating to concentrate, crystallizing, decomplexing, separating glycerol from copper hydroxide or other metal hydroxides, carrying out nanofiltration to separate glycerol, carrying out reverse osmosis to concentrate glycerol, distilling to concentrate glycerol and fractionating. The salinity of the wastewater treated by the method is lowered, and a biochemical treatment process is adopted after the treated wastewater is diluted, so as to enable the quality of outlet water to reach the standards; meanwhile, sodium chloride and glycerol are effectively recovered, wherein the purity of finished product glycerol reaches 95%.

The invention belongs to the technical field of sewage treatment, and in particular, relates to a rural domestic sewage combined type ecological treatment system and a treatment method, and an application thereof. The rural domestic sewage combined type ecological treatment system includes a sewage collection pipe network, a regulation pool, a high-grade biological contact oxidation pool, a high-efficiency biological filter pool and a constructed wetland which are successively connected, wherein the high-grade biological contact oxidation pool includes a first reaction zone and a second reaction zone, and the first reaction zone and the second reaction zone are connected in a hydraulic drop form; the first reaction zone is connected with the sewage collection pipe network; the second reaction zone is connected with the high-efficiency biological filter pool. By biological carrier high-grade contact oxidation, adsorption effect based on water supply sludge and deep treatment of the constructed wetland, pollutants in the domestic sewage are removed finally, so that the domestic sewage can be subjected to effective purification treatment. The device and the method have wider applicability, can effectively control the pollutants of the rural domestic sewage, and reduce the amount of pollutants entering river channels.

The invention relates a full-automatic intelligent dosing system which comprises an intelligent dosing controller, a process detection instrument, a water quality analyzer and a reagent tank, wherein the outlet of the reagent tank is connected with a metering pump, the process detection instrument is used for collecting the liquid level, the temperature and the flow in a flocculent precipitate pond; the water quality analyzer is used for collecting the turbidity and pH value of the flocculent precipitate pond; the intelligent dosing controller is used for calculating the dosage by virtue of a dosage mathematical model according to the received temperature, flow, turbidity and pH value; control data output by the intelligent dosing controller are input to the metering pump at the outlet of the reagent tank, so that the dosage of the reagent is controlled. The system has good stability and adaptive ability.

The invention discloses a high-concentration printing ink waste water processing technology and belongs to the technical field of waste water processing in the printing field. The high-concentration printing ink waste water processing technology includes the following steps that ink waste water passes through a floatation tank and is mixed with life sewage through an adjusting pool, then the waste water goes through an anaerobic pool, a first-level aerobiotic pool and a second aerobiotic pool to be processed, undergoes sedimentation by a secondary sedimentation tank and undergoes solid-liquid separation. Sludge in the floating pool, the anaerobic pool and the secondary sedimentation tank is drained into a sludge concentration tower through a sludge pump. After the sludge is concentrated, a pneumatic membrane pump is used for pumping the sludge to a plate-and-frame filter press to be dewatered. Pressed and dried sludge cakes are cleaned manually and packaged. Filtered liquid flows back to the waste water adjusting pool. The high-concentration printing ink waste water processing technology is stable in technological processing effect, resistant to impact, low in consumption, efficient, convenient to manage and easy to maintain.

The invention discloses a device for recovering sodium chloride and glycerol from high-salt glycerol-containing high-depth organic wastewater, which comprises a complexing reaction tank, a multistage nanofiltration system, an evaporator, a crystallizer, a decomplexing reaction tank, a centrifuge, a nanofiltration system, an adsorption unit, a desorbing agent storage tank, a distillation tower, a rectification tower and a glycerol storage tank. The device is based on the components, properties and existing treatment scheme of the high-salt glycerol-containing high-depth organic wastewater, and relates to the treatment steps of complexing, nanofiltration, decomplexing, centrifuging, adsorption, concentration by evaporation, crystallization, fractionation and the like. The wastewater treated by the treatment device has lower salt content, and is subjected to a biochemical treatment technique after being diluted, so that the quality of the effluent water reaches the standard; and meanwhile, the sodium chloride and glycerol are effectively recovered, wherein the purity of the finished product glycerol is up to 95%.

The invention discloses a water purifier, which comprises a water treatment unit, a Wifi communication module, a sensor and a controller, wherein the water treatment unit comprises a pure water fabrication device and a tail water / pure water storage device; the pure water fabrication device comprises a UF purification film filter core 1, a first flush valve 2, a low-voltage switch 3, a carbon fiber filter core 4, a first flush valve 5, an ultrafiltration water valve 6, a booster pump 7, an RO film filter core 8 and a third flush valve 9; the tail water / pure water storage device comprises a storage tank 15, a first check valve 10, a second check valve 11, a tail water proportional valve 12, a second high-voltage valve 14 and a first high-voltage valve 13; and the storage tank 15 comprises a pure water storage part 16 and a tail water storage part 17. By the technology, an intelligent, simple, compact, safe and convenient water purifier which is capable of saving water resources and achieving high-intelligence and long-term purification and is high in water preparation amount and free of tail water loss is provided.

The invention discloses a reverse osmosis (RO) water production system having a multi-recovery rate adjusting function. The water production system comprises a raw water TDS (total dissolved solids) probe, a first filter element for prefiltration, a low pressure switch, an influent water electromagnetic valve, a second filter element for prefiltration, a booster pump and an RO membrane treatment device which are sequentially connected, wherein the water outlet end of the RO membrane treatment device is provided with a purified water outlet and a concentrated water outlet; the water outlet is sequentially provided with a check valve, a high pressure switch and a purified water TDS probe; the check valve, the high pressure switch and the purified water TDS probe are further connected with a pressure pot; the concentrated water outlet is provided with a first branch and a second branch; the first branch is provided with a variable series combination electromagnetic valve for direct discharge; the second branch is a concentrated water return pipe; the outlet end of the concentrated water return pipe is connected with a water outlet of the first filter element for prefiltration; and the concentrated water return pipe is provided with an adjustable reflux module and a check valve.

The invention discloses an efficient urban sewage treatment system which comprises a stirring box, a filtering box and a purifying box.The stirring box is located at the upper end of the filtering box.The stirring box and the filtering box are connected through a water conveying pipe.A box cover is arranged at the upper end of the stirring box.The upper end of the box cover is provided with a driving device and a sewage inlet pipeline.The driving device is in drive connection with a stirring shaft.The stirring shaft penetrates through the box cover and extends into the stirring box.Stirring blades are arranged at the portion, inside the stirring box, of the stirring shaft at equal intervals.A filtering layer is arranged at the bottom inside the stirring box.An ultrasonic oscillator is arranged on the inner side wall of the filtering box.A groove is formed in the bottom inside the filtering box.A stretchable device is arranged inside the groove.An ultrasonic probe is arranged at the upper end of the stretchable device.A water suction pump is arranged at the bottom inside the filtering box.According to the efficient urban sewage treatment system, the sewage treatment difficulty is greatly lowered, the sewage treatment effect is improved, it is ensured that purified water reaches the quality standard, and the sewage treatment efficiency is improved.

The invention discloses a water quality rapid simulation method and system based on a water environment coupling model. The method comprises steps that topographic data in a simple form is prepared through actual measurement data or a remote sensing image so as to generate a two-dimensional topographic grid; a standard data framework is built, and various pollution factors such as a non-point source, a point source and an endogenous source and the whole process of hydrodynamic force and water quality migration and transformation are comprehensively considered; the invention discloses a reasonable value range of recommendation parameters and an adjustment method, and provides a set of thought for rapid verification of a coupling model. A water environment capacity calculation model with a point source as an accurate control target is embedded, and visual expression of water quality simulation and analysis results is achieved. According to the water quality simulation method and system provided by the invention, multiple types of pollution sources are considered, the physical mechanism process is comprehensive, compared with a traditional water quality loose coupling simulation mode,data processing is simpler and more efficient, the obtained water quality prediction result is more accurate, and actual management of the water environment quality can be served.

The invention discloses a device for recovering glycerinum in high-salinity organic wastewater. The device comprises a complexation system, a nanofiltration system, an evaporator, a crystallizer, a decomplexing reaction tank, a centrifugation device, a distillation tower, a rectifying tower and a glycerinum storage tank, wherein a water outlet of the complexation system is connected with a water inlet of the nanofiltration system; a nanofiltration dialysate outlet of the nanofiltration system is connected with a water inlet of the evaporator; a nanofiltration concentration liquid outlet of the nanofiltration system is connected with a water inlet of the decomplexing reaction tank; a water outlet of the evaporator is connected with a water inlet of the crystallizer; a water outlet of the decomplexing reaction tank is connected with a water inlet of the centrifugation device; a liquid outlet of the centrifugation device is connected with a water inlet of the distillation tower; a water outlet of the distillation tower is connected with a water inlet of the rectifying tower; and a water outlet of the rectifying tower is connected with the glycerinum storage tank. Glycerinum in wastewater treated by the device is effectively recovered, the purity of a finished product of glycerinum is up to 95%, meanwhile, salinity is reduced, a biochemical treatment process is adopted after dilution, and the effluent quality reaches the standard.

The invention discloses an A2O-D2 synergistic nitrogen and phosphorus removal technology and device. The device comprises an anaerobic pool, an anoxic pool, and an aerobic pool which are successivelyconnected. The technology comprises the following steps: after performing anaerobic, anoxic and aerobic treatments on municipal sewage, obtaining aerobiotic effluent; enabling a deoxidation pool to beembedded in the aerobic pool, and dividing the water outlet end of the aerobic pool to two parts, wherein one part is refluxed to the anoxic pool after entering the deoxidation pool for deoxidation,and the other part is directly flowed to a secondary sedimentation pool, and a volume ratio of the two parts is (2-4):1; and enabling the tail end of the secondary sedimentation pool to be connected to a sludge thickening pool, enabling concentrated sludge to be refluxed to the anoxic pool, and enabling supernatant liquid to be refluxed to the deoxidation pool. The technology is capable of, on thebasis of a current A2O technology, further improving the nitrogen and phosphorus removal effect of the secondary treatment, reducing the sewage treatment investment and the operating cost, providingan A2O-D2 synergistic nitrogen and phosphorus removal technology flow and technological design key points and design parameters thereof, and providing a design of a sewage treatment plant and a solution scheme of upgrading and reconstruction.

The invention discloses a phosphorus-removing adsorbent for waterworks and a preparation method thereof. The phosphorus-removing adsorbent is prepared from dead branches and leaves in gardens, potassium carbonate, diatomite, ferric chloride, chitosan, citric acid and other raw materials. The adsorbent of the invention has a moderate pore structure and abundant active adsorption sites, and producesa small amount of divalent and trivalent iron ions in phosphorus-rich water for production of iron phosphate and ferrous phosphate precipitates with phosphate radicals in the water; the obtained products are conjugated with a diatomite-coated adsorption material; and the finally obtained products are recovered in virtue of superparamagnetism. The phosphorus-removing adsorbent provided by the invention can be used as a technical solution for treating sudden phosphorus pollution in the waterworks to ensure that the quality of water supplied by the waterworks meets the standard, and has the advantages of low treatment cost, simple operation, capacity of treating the waste with the waste, and no secondary pollution.

The invention discloses a method capable of effectively recovering sodium chloride and glycerol from high-salt glycerol-containing high-depth organic wastewater. The method comprises the steps of complexing, carrying out nanofiltration to desalt, evaporating to concentrate, crystallizing, decomplexing, separating glycerol from copper hydroxide, carrying out nanofiltration to separate glycerol, carrying out macroporous adsorption to concentrate glycerol, carrying out desorption and resin regeneration, distilling to recover ethanol or n-butanol and fractionating. The salinity of the wastewater treated by the method is lowered, and a biochemical treatment process is adopted after the treated wastewater is diluted, so as to enable the quality of outlet water to reach the standards; meanwhile, sodium chloride and glycerol are effectively recovered, wherein the purity of finished product glycerol reaches 95%.

The present invention relates in general to municipal wastewater treatment, and in particular, to a new biological fluidized bed process with high concentration powder carriers used for the treatment of municipal wastewater, wherein the process comprises: flowing the wastewater through a coarse screen and a lifting pump firstly, lifting to a fine screen and grit chamber, and then entering a HPB biochemical tank; dividing the HPB biochemical tank successively into an anaerobic zone, an anoxic zone, an aerobic zone and a concentrated separation zone along the flow direction of the wastewater, adding a compound powder carrier to the anaerobic zone, the anoxic zone and the aerobic zone respectively, and stirring and mixing into a mixture; flowing the mixture into the concentrated separation zone and concentrating and separating, returning the concentrate back to the anaerobic zone; discharging the supernatant from the concentrated separation zone and successively transporting through a high-efficient clarification tank, a filter tank and a disinfection tank to be purified; transporting the discharged excess sludge to a cyclone separation and recovery system; the separated compound powder carrier will be recycled to HPB biochemical tank. The HPB process in the present invention is a highly integrated municipal wastewater treatment process, in which only one lifting operation is required. In addition, it has a small land area, a low operating energy consumption and a high treatment efficiency.

The invention relates to a method for optimizing the operation of a desalting system of an ion exchanger. The method is characterized by comprising the following steps: measuring cation bed water alkalinity s1 and anion bed water acidity s3 by an acidity-alkalinity detection device; acquiring raw water hardness g by a hardness detection device and obtaining cation bed rational produced water quantity N1 and anion bed rational produced water quantity N2; determining a basis judgment parameter d through the specific value of N1 and N2; judging whether d is smaller than 1 or not, if d is smallerthan 1, performing a detection step based on a cation bed and determining cation bed single time regeneration acid quantity M1 and anion bed single time regeneration acid quantity M2; and if d is equal to or larger than 1, performing a detection step based on the anion bed and determining the anion bed single time regeneration acid quantity M2 and the cation bed single time regeneration acid quantity M1. The invention has the advantages of real-time diagnosis, rapidity, convenience, flexible control, rational consumption, scientific operation, effective control of water leaking silicone, reliable quality of produced water and safe and reliable production.

The invention relates to an immersed MBR membrane tank device, and a method for treating sewage by using the same. The immersed MBR membrane tank device comprises a PLC, a total liquid level sensor, a raw water pump, a sewage treatment tank, an MBR membrane filtration assembly, an aeration washing assembly, a backwashing assembly, a water production assembly and a sludge discharge pump, and the MBR membrane filtration assembly comprises at least two MBR membrane filtration units. According to the invention, the defects of large occupied area, high manufacturing cost, low activated sludge concentration, low sewage treatment efficiency, low membrane flux recovery degree after MBR membrane cleaning and the like of the existing sewage treatment device are overcome; the MBR membrane filtration assembly is arranged in the sewage treatment tank, and the aeration washing assembly, the backwashing assembly, the water production assembly and the sludge discharge pump are connected into the sewage treatment tank and are controlled by the PLC, so that aeration, filtration, water production and backwashing are performed in the same sewage treatment tank; and the device has the advantages of standard water quality after treatment, small occupied area, low manufacturing cost, high activated sludge concentration, high sewage treatment efficiency, high membrane flux recovery degree after membrane cleaning and the like.

The invention discloses a device for recovering sodium chloride and glycerinum from a high-salinity and high-depth organic wastewater containing glycerinum. The device comprises a complexing reaction tank, a multi-stage nanofiltration system, an evaporator, a crystallizer, a decomplexing reaction tank, a centrifuge device, a nanofiltration system, a reverse osmosis device, a distillation tower, a rectifying tower and a glycerinum storage tank. Based on components, properties and existing processing scheme of the high-salinity and high-depth organic wastewater containing glycerinum, the device relates to the processing procedures such as complexing, nanofiltration, decomplexing, centrifuging, reverse osmosis concentration, evaporation concentration, crystallization and distillation. The salinity of the wastewater which is processed by the treatment device is reduced, and a biochemical treatment process is adopted after the wastewater is diluted, so that the effluent quality reaches the standard, meanwhile, sodium chloride and glycerinum are effectively recovered, and the purity of the finished glycerinum product reaches 95%.

The invention discloses a kitchen wastewater treatment device which comprises a pretreatment zone, an anaerobic tank, a dosing device and a main treatment zone, wherein a first pH value adjusting tank, a flocculation basin, an air floating water outlet tank and a second pH value adjusting tank of the pretreatment zone are distributed close to the outer side of an air floating reaction tank; and aprimary anoxic pond, a primary aerobiotic pond, a secondary anoxic pond and a secondary aerobiotic pond of the main treatment zone are sequentially arranged. The invention further discloses a kitchenwastewater treatment method. The kitchen wastewater treatment device can be easily arranged in a same reaction tank, is compact in structure, reasonable in arrangement, easy in wastewater treatment device integration, small in floor space and possible in overall movement, transfer and hoisting and is low in civil engineering cost and convenient and rapid to mount because of a pry block mounting mode.

The invention discloses a method for recycling glycerol in organic wastewater with high salt content. The method includes complexation, nanofiltration and desalination, evaporation and concentration, crystallization, decomplexation, copper hydroxide and glycerol separation, distillation, and fractionation, wherein the complexation can adopt first-level complexation, second-level complexation, third-level complexation or fourth-level complexation, according to the number of complexation levels, first-level nanofiltration and desalination, second-level nanofiltration and desalination, third-level nanofiltration and desalination or fourth-level nanofiltration and desalination are correspondingly adopted, and finally the glycerol content in a nanofiltration dialysate is less than 0.5%. The wastewater is treated by the method, the glycerol is effectively recycled, the purity of the finished product glycerol reach 95%, simultaneously, the salinity is decreased, a biochemical treatment process is adopted after dilution, and the water quality of an effluent is qualified.

The invention discloses a heavy metal waste water treatment device. The device comprises a sewage tank (1). A first PH regulation tank (3) connected through a pipeline (2) is arranged on a side of the sewage tank (1). The other side of the PH regulation tank (3) is connected with one side of a water distribution tank (4) through a pipeline (2). A sedimentation tank (5) is arranged below the water distribution tank (4). The sedimentation tank (5) is connected with the water distribution tank (4) through water distribution holes (6) on the bottom of the water distribution tank (4). A weir port (7) is provided on the upper part on a side wall on the other end of the sedimentation tank (5). The weir port (7) is connected with a second PH regulation tank (8) on the other side of the sedimentation tank (5) through a pipeline (2). The other side of the second PH regulation tank (8) is sequentially connected with a quartz sand filtering tank (9), an active carbon adsorption tank (10), and a clear water tank (11) through pipelines (2). The entire structure of the device provided by the invention can adopt an integral design. The device has the advantages of small land occupation and low cost, and is suitable to be applied by various sewage-discharging enterprises.

The invention discloses a seasonal high-turbidity raw water treatment process. Raw water enters a settling pond for sedimentation after entering a pre-sedimentation, concentration and reuse pond for pre-sedimentation; after the water obtained through sedimentation enters a filter pond to be filtered and enters a clean water pond to be regulated and stored, the water is pumped into a municipal pipe network after being pressurized through a secondary pump house; sludge discharged out of the pre-sedimentation, concentration and reuse pond is received into a balance pond to be stored; the discharge sludge enters a dewater room to be dewatered, and dry sludge obtained through dewatering is transported outwards to be processed, and filter liquor is drained into a concentration mass-energy conversion pond. The process can adapt to different raw water situations and can meet different running requirements; the sludge discharge and water treatment process and the dewatering process are combined together; meanwhile, the process adapts to the seasonal high-turbidity and general low-turbidity working condition, secondary processing is conducted on concentration pond supernatant and dewatering filter liquor which are prone to exceeding the emission standard in the industrial wastewater concentration and dewatering process through the concentration mass-energy conversion pond, the occupied area is saved by highly using the processing capacity of buildings, and the effects of discharging water, obtained in the water purification process, in an up-to-standard mode and converting organic matter in industrial wastewater into biological energy sources to be further recycled are achieved.

The invention relates to a rainwater dynamic balance type fire water tank water purifying device. The device comprises a fire water tank, a rainwater collecting tank, a self-priming centrifugal pump and a double-layer filter material filter, the top of the rainwater collecting tank is connected with the first rainwater riser, the fire water tank is connected with the water inlet of the first rainwater riser, the water outlet tube of the water tank is provided with a float ball valve, a solenoid valve and a second rainwater riser are arranged at the bottom of the rainwater collecting tank, twoends of the solenoid valve are respectively connected with the rainwater collecting tank and the second rainwater riser, one end of the self-priming centrifugal pump is connected with the rainwater collecting tank, the other end of the self-priming centrifugal pump is connected with the double-layer filter material filter, the double-layer filter material filter is connected with the fire water tank, and a support is arranged at the bottom of the double-layer filter material filter. The device solves the problems of poor quality of long-term stored water in the fire water tank of a high-rise building and high energy consumption in water renewing in a traditional way, and utilizes initial rainwater to realize the purpose of purifying water in the fire water tank on the premise of ensuring the dynamic balance of the water volume of the fire water tank.

The invention discloses a drying artificial wetland system and method capable of enhancing absorption of nitrogen and phosphorus. The system comprises a pool body and a water inlet main pipe, whereinthree layers of wetland filler for planting wetland plants are arranged in the pool body, a water outlet pipe leading to a water outlet trough is arranged at the bottom of the pool body, and a micro-spray branch irrigating pipe which is connected with the water inlet main pipe and provided with a nozzle is arranged above the pool body; and the set height of the micro-spray branch irrigating pipe is higher than the growth height of the wetland plants, the water inlet main pipe is provided with a water inlet main valve, a pressure pump and a first timer, and the water outlet pipe is provided with a water outlet main valve and a second timer. A mode of foliar-rhizome double cycled water distribution is adopted, the total nitrogen removal rate is 69.76%, the total phosphorus removal rate is 74.45%, and the removal rate of nitrogen and phosphorous is improved significantly when the method is compared with a traditional method of water distribution in roots; and through foliar spraying, thebiomass of the plants is also significantly higher than that of the traditional method.

The invention discloses a septic tank and sewage treatment method using pretreatment and biological contact in the technical field of treatment of domestic sewage. The septic tank which adopts pretreatment and biological contact includes a pretreatment aeration pool, a pretreatment sedimentation pool, an anaerobic fermentation pool, a biological contact oxidation pool, a secondary sedimentation pool and a blower, wherein a water inlet pipe is arranged on the pretreatment aeration pool, a first overflow plate is arranged between the pretreatment sedimentation pool and the pretreatment aerationpool, and the anaerobic fermentation pool is a sealed cavity. Sewage is pretreated under the condition of aeration firstly, organic matter and suspended matter in the sewage are adsorbed by sludge, and therefore the obtained sewage has a low carbon-nitrogen ratio; sedimentation of the sludge is performed in the pretreatment sedimentation pool, only the liquid is discharged, and solid matter whichcarries parasite eggs is left, so that anaerobic sterilization and egg killing are achieved; denitrification and phosphorus removal are performed, so that organic matter is reduced, and the sewage ispurified effectively; finally resting sedimentation is performed so that excessive SS which is caused by biofilm falling off and aeration agitation can be avoided; therefore, the method has a good treatment effect on organic matter, nitrogen, phosphorus and other matter.

The invention belongs to the direct drinking-water equipment technical field, and relates to a cloud-based water dispenser control system comprising a water dispenser control module, a cloud database module and a user application end module; the water dispenser control module is connected with the user application end module through a wireless module; the cloud database module is connected with the user application end module through the internet; the water dispenser control module is used for collecting water dispenser information and controlling the water dispenser; the cloud database is used for storing water dispenser perception data; the user application end module is used for transferring a control order and data collected by the water dispenser control module; the control system sends data or orders to the water dispenser control module, thus remotely controlling and operating each water dispenser. The cloud-based water dispenser control system can obtain the water dispenser state information in real time, and can realize a water dispenser automatic water receive function.