304results about How to "Water safety" patented technology

The invention discloses a method for removing micro-pollutants in water via combination of ultraviolet light and free chlorine. The pollutants removed by the method are various pernicious micro-pollutants in water, such as pharmaceuticals and personal care products (PPCPs), algal toxin and refractory organics. The method specifically comprises the following steps: adding free chlorine into water containing the micro-pollutants, then performing light irradiation, generating a large amount of hydroxyl radicals and helium atom to attack the micro-pollutants and degrade the micro-pollutants, wherein the feeding amount of the chlorine is determined by the water quality condition and the concentration of the pollutants; the chlorine is fed according to a mole ratio of the chlorine to the pollutants in water being 1:1-100:1; the free chlorine is pypocholoride or chlorine. The method, disclosed by the invention, is simple to operate, obvious in effect and safe to use; the fed chlorine also can be used for the subsequent disinfection; after being processed via the method, the micro-pollutants in water can be completely removed; meanwhile, through the method, other pollutants can be removed synchronously; the synergy of the combination of ultraviolet light and free chlorine for disinfection can be played.

The invention discloses an intelligent water discharge detection module and a water discharge control method based on visual detection. The water outlet intelligent detection module based on visual detection includes a control module, an infrared sensor 1, a voice recognition module, and a first camera that are electrically connected to the control module; also includes a solenoid valve electrically connected to the control module; the infrared Sensor one is located on the top of the water intake table, and starts the first camera when detecting that there is an article below the water outlet; the first camera is located above the water intake table to determine whether the article below the water outlet is a cup for water intake. The invention realizes the automatic and safe water discharge of the water dispenser through the camera, the infrared sensor and the corresponding control circuit, and intelligently controls the water discharge according to the cup information of the storage module through the scanning of the camera. The water dispenser of the present invention has the advantages of simple structure, high intelligence and safe use.

The invention discloses a water treatment method of zero-valent iron-copper bi-metal activated persulfate. The water treatment method specifically comprises the steps that bi-metals including zero-valent iron and copper are added into water containing micro-pollutants, then persulfate is added, full mixing is performed, the bi-metals including the zero-valent iron and the copper are utilized to activate the persulfate so as to remove the micro-pollutants in the water. The water treatment method utilizes the bi-metals including the zero-valent iron and the copper to efficiently activate the persulfate so as to produce free sulfate radicals having strong oxidizing property, can achieve the purpose of quickly and thoroughly removing micro-pollutants, including multiple types of poisonous and harmful micro-pollutants in water, such as polychlorinated biphenyl, brominated flame retardants, drugs and personal care products (PPCPs) and algal toxin, and has the advantages of high activation efficiency, high oxidation and degradation efficiency of pollutants, wide pH using range, convenient operation and the like. The water treatment method can be applied to underground water remediation, treatment of industrial water (including electroplating wastewater, hospital wastewater, printing and dyeing wastewater and the like), drinking water treatment, wastewater treatment and the like.

The invention relates to a groundwater remediation method by Electro-Fenton reaction using an iron cathode. Specifically, an inert conductive material is used as an anode; iron is used as a cathode A; a conductive material is used as a cathode B; hydrogen peroxide is in situ generated by hydrogen and oxygen, which are produced by electrolyzing the groundwater, under the action of a catalyst; highly strong oxide is generated with the existence of Fe(II) and in a weak acid condition with the pH being 3 to 3.5 to oxidize and decompose the organic pollutants in the groundwater, so as to achieve the in-situ remediation of the organically contaminated groundwater; and the Fe(II) is in situ generated by using the iron cathode A in the weak acid condition with the pH being 3 to 3.5, which is formed under the electrochemical action automatically. By the method, the Fe(II) at a certain concentration is in situ generated by using the iron as one cathode and in the weak acid condition, which is formed under the electrochemical action automatically; and the method is flexible and controllable in the processing effect and environment-friendly in the processing process.

The invention discloses a water supply pipe network management system. The system comprises a DMA life cycle management module and a DMA data analysis module, wherein the DMA life cycle management module comprises a DMA engineering management unit, a DMA management ceiling unit, a DMA maturity grading unit and a DMA consultative management unit; and the DMA data analysis module comprises a DMA leakage and loss source analysis unit, a new loss alarming unit and a zoning evaluation unit. The water supply pipe network management system provided by the invention is a Smart DMA, which fully utilizes a large amount of data recorded by the system; through technologies such as a self-developed algorithm, a simulation technology, a clustering algorithm, a chaos genetic algorithm, an interactive query and the like, useful information is extracted and specifically used for guiding practical production and marketing and leakage management; application scenes and specifications are deeply and effectively mined, so that the leakage control difference management is realized and the working efficiency is improved; and multiple technical means are adopted in the aspects of solving the leakage problem and saving water, so that the input cost is effectively reduced.

The invention relates to a method for carrying out hollow fiber membrane surface hydrophilic modification by using a biological agent, comprising the steps of (1) immersing a hollow fiber membrane in isopropanol and pure water to finish wetting treatment; (2) adding dopamine powder into a buffering solution to prepare a dopamine solution; (3) immersing the immersed hollow fiber membrane into the dopamine solution; placing the two ends of the hollow fiber membrane out of the solution and utilizing air to carry out aeration and agitating reaction; and then washing to be clean, and sealing and packaging. The method only coats and modifies on the membrane surface and does not change the structure of the membrane; the operation is simple, and the industrialized production is easy to realize; the prepared hollow fiber membrane is anti-ageing, chemical-washing-resisting and high-temperature-resisting; the hollow fiber membrane can be prepared into a curtain type or pipe type membrane assembly and can be applied to the treatment of oily wastewater and emulsified liquid wastewater; and the effluent quality of membrane filtering is safety and reliable and the water quality requirement of the reuse of reclaimed water is achieved.

The invention discloses a method for treating water by using zero-valent iron-nickel bi-metal activated persulfate. According to the method, the zero-valent iron-nickel bi-metal activated persulfate is used, and micropollutants in the water are removed. The zero-valent iron-nickel bi-metal activated persulfate is used for efficiently generating high-oxidizing-property sulphate radical and high-oxidizing-property hydroxyl radical to attack the micropollutants, the micropollutants are degraded, and the purpose of quickly and thoroughly removing various poisonous and harmful micropollutants such as polychlorinated biphenyl, brominated flame retardants, medicines, personal care products (PPCPs) and algal toxin can be achieved. Compared with the existing the method for treating water by using zero-valent iron activated persulfate, the method has the advantages of high activating efficiency, high yield of the sulphate radical, high micropollutants removing efficiency and the like, is convenient and easy to operate, obvious in effect and wide in pH (potential of hydrogen) using range, and can be used for ground water remediation, treatment of industrial water comprising electroplating wastewater, wastewater of hospitals, printing and dyeing wastewater, treatment of drinking water, treatment of sewage and the like.

The invention relates to a drinking water heating device, in particular to a drinking water heating device with a pre-heating function, which comprises a seat body, a water outlet nozzle and an instant-heating heater, wherein the instant-heating heater is provided with an inlet and an outlet; the inlet is connected with a water inlet pipeline; the outlet is communicated with the water outlet nozzle. The drinking water heating device is characterized in that: the drinking water heating device also comprises a pre-heater; the pre-heater is arranged on the water inlet pipeline; the drinking water heating device pre-heats the water entering the instant-heating heater so as to primarily increase the water temperature; and the primarily heated water can be quickly heated to a boiling point or a temperature close to the boiling point after being heated by the instant-heating heater so that the heating time is saved and large water outlet flow can be ensured for drinking without increasing power of the instant-heating heater. The drinking water heating device is simple and rational in structure, simple and safe in use, low-carbon and energy-saving, and long in service life, and can satisfy various different drinking requirements of people, for example, making tea, making coffee and the like.

The invention discloses a system and a method for removing natural organic substances and odor-induced substances in micro polluted water, which belong to the fields of water treatment processes and equipment. The system comprises an aeration biological filter tower, an ultra-filtration membrane assembly and a regulating tank, wherein the bottom of the aeration biological filter tower is connected with the bottom of the regulating tank through a pipeline; the regulating tank is provided with two water outlet passages, namely a direct water outlet passage of the regulating tank and a water passage for connecting the regulating tank and the ultra-filtration membrane assembly; the water outlet of the ultra-filtration membrane assembly is connected with the water inlet of a clean water tank through a water outlet pump. The invention also discloses the method for removing the natural organic substances and the odor-induced substances in the micro polluted water by using the system. The treatment process can simultaneously remove the natural organic substances and 2-methyl isoborneol and geosmin serving as the odor-induced substances in the water, the quality of the discharged water is good, the adding amount of a disinfectant is obviously reduced, and the generation of disinfection byproducts is reduced.

The invention discloses a gas water heater and method for preventing the frost with a water pump. The gas water heater for preventing the frost with the water pump comprises a heat exchanger, a combustor, a water inlet pipe, a water outlet pipe and a water outlet valve. The combustor is arranged below the heat exchanger. A water flow sensor is mounted on the water inlet pipe. The water outlet valve is arranged on the water outlet pipe. The water pump is arranged between the water flow sensor and the heat exchanger. The water inlet pipe communicates with the water outlet pipe through a circulating water pipe. One end of the circulating water pipe is arranged between the water outlet valve and the heat exchanger, and the other end of the circulating water pipe is arranged between the water flow sensor and the water pump. A circulating valve is arranged on the circulating water pipe. A first temperature sensor is arranged on the water inlet pipe. When the water temperature detected by the first temperature sensor is lower than the first temperature value, the water outlet valve is closed, the water pump is opened, the circulating valve is opened, and a circulating water passageway is formed; and the combustor is started to heat the heat exchanger. In this way, water in the water heater is circulated and heated by the water pump and the combustor, and the water passageway is prevented against the frost.

The invention provides a water tank structure of an instant heating water dispenser, and aims to solve the technical problem that an existing water tank structure of an instant heating water dispenser is simple and poor in steam-water separating effect. The water tank structure comprises a water tank body and an end cover, the water tank body comprises a water level chamber, a steam and water separating chamber, a water return chamber and a steam outlet, the water level chamber is positioned in the middle of the water tank body, a cold water inlet and a cold water outlet are formed in the water level chamber, the steam and water separating chamber and the water level chamber are separated by a first partition, the water level chamber encircles the steam and water separating chamber, a hot water inlet and a hot water outlet are formed in the steam and water separating chamber, the first partition is lower than the water level chamber, the water return chamber and the water level chamber are separated by a second partition, the second partition is lower than the first partition, and a reflow opening is formed in the water return chamber. The water tank structure has the advantages of good steam-water separating effect and water level control effect.

The invention discloses a supporting watering device for planting saplings, which comprises a base plate, a support plate and a cross bar. Connected with the tight spring, the inside of the crossbar is provided with a strip hole along its length direction, the strip hole is provided with a slider slidingly connected with its side wall, the outer side wall of the arc-shaped clamp is provided with a hook, and the support frame A horizontal shaft is provided, and a winding roller is provided on the horizontal shaft, and a rotating disk is provided at one end of the horizontal shaft; a water storage tank is also provided on the base plate, and the water storage tank is fed into the water pump provided on the support plate through a pipeline. The water ends are connected, and the side of the support plate close to the cross bar is fixedly connected with a water spray frame, and a plurality of water spray heads are installed on the water spray frame. The structure of the invention is simple, and one person can plant saplings to speed up the efficiency of planting saplings. , to ensure the upright planting of the saplings, to facilitate the watering of the saplings, easy to operate, and strong in practicability.

A water dispenser for ice water, normal temperature water, hot water and warm water comprises an automatic make-up water tank, a refrigerating water tank, a refrigerating system, a heating water tank and a heating system. The refrigerating system is installed in the refrigerating water tank, and the heating system is installed in the heating water tank. A water inlet pipe is arranged on the top of the automatic make-up water tank which is provided with a drain main, and three water outlet branch pipes are arranged at the bottom of the automatic make-up water tank. A constant temperature system is installed in a constant temperature water tank, a water outlet of the constant temperature water tank is connected with a safety solenoid valve through a pipeline, the safety solenoid valve is connected with the constant temperature system, the safety solenoid valve is connected with a constant temperature water switch through a pipeline, the constant temperature water switch is connected with a water outlet main, an air outlet of the constant temperature water tank is connected with the drain main, and a drain outlet of the constant temperature water tank is connected with the drain main. According to the water dispenser for the ice water, the normal temperature water, the hot water and the warm water, people can selectively drink the ice water, the normal temperature water, the hot water and boiled warm water which can not scald the people.

The invention discloses an integration ultrafiltration membrane water treatment device integrating membrane fiber detection. The device comprises a cartridge filter, more than one ultrafiltration membrane component, a membrane fiber detection air pump, a first electromagnetic valve, transparent pipes, a water inlet manifold and a water outlet manifold, wherein a water outlet end of the cartridge filter is communicated with water inlet ends of the ultrafiltration membrane components through the water inlet manifold; the transparent pipes are fixedly arranged at water outlet ends of the ultrafiltration membrane components and are communicated with the water outlet manifold respectively; the membrane fiber detection air pump is communicated with the water inlet manifold through an air duct; the first electromagnetic valve is arranged on the air duct; the water inlet manifold is provided with a water inlet electromagnetic valve; and the water outlet manifold is provided with a water outlet electromagnetic valve. The device overcomes the defect that a conventional hollow fiber ultrafiltration membrane water treatment device cannot detect the healthy operation of the membrane fiber in time, and on the premise of not influencing the normal operation of the membrane treatment device, not only ensures that the quality of yielding water meets a national drinking water standard but also can conveniently detect whether a hollow fiber membrane fiber in the membrane component operates healthily so as to ensure the security of the yielding water quality.

The invention discloses an electroporation disinfecting device, method and application of nanowire modified three-dimensional electrodes, and belongs to the technical field of water treatment and disinfection. The device consists of two nanowire modified three-dimensional electrodes, two insulation slots, two wires, a plastic net and a power supply, wherein the two nanowire modified three-dimensional electrodes are respectively fixed to the two insulation slots, the space between the two nanowire modified three-dimensional electrodes is equal to or larger than 5mm, and the plastic net is placed between the two nanowire modified three-dimensional electrodes; the two nanowire modified three-dimensional electrodes are respectively connected with the positive electrode and the negative electrode of the power supply through the two wires. After the power supply is switched on, water to be treated is disinfected through the nanowire modified three-dimensional electrodes. According to the disinfecting method, low-voltage operation is utilized, the electrolytic reaction of a solution is avoided, chlorine is not generated, and efficient safe disinfection is realized; during the disinfection, the cell membrane structure of microorganisms is destroyed, the revival phenomenon cannot occur, the water safety is further guaranteed, and the disinfecting method can be widely used in the technical field of the water treatment and the disinfection.

The invention discloses a buoy microsystem for ocean exploration. The buoy microsystem comprises a buoy, an underwater collection system, a positioning system and a data storage system, wherein the positioning system and the data storage system are carried on the buoy; the underwater collection system is located under the water and is used for collecting magnetic signals and underwater acoustic signals; the positioning system is used for collecting acceleration signals and GPS signals and monitoring position and attitude information of the buoy; and the data storage system is used for pollingand reading the information of the positioning system and the underwater collection system and storing the information to an SD card. The buoy microsystem is tiny in volume, easy to distribute, stablein structure and safe to dive, the volume of the buoy is reduced, and meanwhile, the monitoring and storage of underwater magnetic and underwater acoustic information, accelerated speed and GPS signals can be finished.

The invention provides a preparation method of a fluoride removal electro adsorption electrode for drinking water and a fluoride removal electro adsorption electrode. The method comprises the following steps: (1) mixing a conductive material and an adsorbent to obtain a conductive mixture, wherein a weight ratio of the conductive material and the adsorbent is 3-55: 45-97; (2) adding hot melt adhesive into the mixture obtained in the above step to stir uniformly and obtaining an electro adsorption mixture, wherein a weight ratio of the hot melt adhesive and the conductive mixture is 5-50: 50-95; (3) adding the electro adsorption mixture into a mould, and followed by hot pressing moulding to obtain the fluoride removal electro adsorption electrode. Combined electrode prepared with the method in the invention has the advantages of strong fluoride removal and adsorption capability, high strength, no fragmentation in long-term use, small mass loss, no digestion, free of secondary pollution, safety and reliability, and is suitable for long-term usage under a condition of big change of water flow pressure.

The invention belongs to the field of organic chemical wastewater treatment, and in particular relates to a novel high-efficiency ozone catalytic oxidation stirring reactor which is obtained by reforming the traditional ozone reactor and is used for treating chemical wastewater. By reforming the internal structure of the ozone reactor (such as arranging a guide cylinder and additionally arranginga stirring device), the ozone residence time is prolonged; furthermore, ozone is combined with a catalytic packing loaded with activated carbon and nano-iron (a mixture of nano zero-valent iron and nano iron oxide) for use, so that the ozone utilization rate is improved, and the process energy consumption and the treatment cost are reduced.

The invention relates to a water dispenser, a water dispenser control method and a water dispenser device. The water dispenser comprises a water receiving window and a thermal discharge pipeline. Theoutlet water control circuit is used for controlling the on-off of the hot water discharge pipeline according to the object image output by the image acquisition device. According to the technical proposal provided by the invention, since you do not need to deploy a personal computer or server, the water outlet control circuit can directly control the on-off of the hot water outlet pipeline according to the object image output by the image acquisition device, thereby realizing safe water outlet, reducing the dependency on the network and high reliability. In addition, the equipment cost and the manpower input for deploying the personal computer and the server are saved, the user cost is reduced, and the user experience degree is high.

A clean rainwater collection and purification device is mainly formed by combining a rainwater collecting pool, a rainwater filtering pool, a water collecting cellar and a water purifier. The device is characterized in that the rainwater collecting pool at least comprises a ground brick-wall embankment, an aqueduct, a hardened ground and a rolling flexible waterproof fabric arranged on the hardened ground; the peripheral edge of the hardened ground is surrounded by the brick-wall embankment and the aqueduct is arranged on at least one section between the hardened ground and the embankment; the hardened ground consists of at least one ground or a plurality of grounds which are arranged side by side and isolated by the aqueducts respectively; the aqueduct is connected with the rainwater filtering pool by a water transferring pipe; and the water collecting cellar is connected with the rainwater filtering pool by a water transferring pipe and is communicated with at least one water purifier by the water transferring pipe. The device has the characteristics that the collecting efficiency is high; the product cost is low; the structure is simple and reliable; the operation is easy; the device is portable, durable and environment-friendly; and the water quality is safe, and the like. The device can lead the three significant indexes of water-use quantity, health index and water-taking convenience of 'safe drinking water' to reach the standard simultaneously.

The invention provides a safety and high-efficiency combined technology for landfill leachate nanofiltration concentrated solution treatment. The combined technology comprises three processes of iron-based flocculent precipitation treatment, electricity-like Fenton advanced oxidation and activated carbon adsorption treatment. The iron-based flocculent precipitation treatment can achieve a flocculent appropriate pH by controlling an adding mount of ferric salt to enhance a flocculation effect; in the electricity-like Fenton advanced oxidation, residual Fe<3+> of flocculation supernatant is utilized as a catalyst precursor, and an organic matter degrading effect is obviously improved compared with ordinary electrolysis; by means of arranging the activated carbon adsorption process, residuallow-molecular-weight organic matters after the former two steps and toxic and side byproducts generated in the electricity-like Fenton process can be adsorbed at the same time in high efficiency; finally safe and high-efficiency treatment on a concentrated solution is achieved; thus, the problems that the landfill leachate nanofiltration concentrated solution is difficult to treat and effluent hashigh toxicity in the field of water pollution control are solved.

A cooking double boiler including an outer pan that is heated upon pouring water therein, an upper lid that covers an upper aperture thereof, and an inner pan with a flange that is set into the interior of the outer pan. The outer pan includes a peripheral edge portion that supports the flange of the inner pan, wherein a plurality of concave portions for directing generated water vapor upward of the inner pan are located at the peripheral edge portion. The cooking double boiler has vapor spouts located between the peripheral edge portion of the outer pan and the flange of the inner pan for movement between open and closed positions.

The invention provides a preparation method of a fluoride removal electric adsorption lanthanum-loaded electrode for drinking water and a fluoride removal electric adsorption electrode prepared by the method. The method comprises the steps of (1) loading lanthanum into a carbon aerogel material to prepare a conductive adsorbent, wherein the weight part ratio of lanthanum to the carbon aerogel material is (5-60):(40-95); (2) adding a hot melt adhesive into the lanthanum-loaded carbon aerogel material prepared in the step (1), and mixing uniformly to prepare an electric adsorption mixture, wherein the weight part ratio of the hot melt adhesive to the lanthanum-loaded carbon aerogel material is (10-40):(60-90); (3) putting the electric adsorption mixture into a mold, and performing hot press molding. The composite electrode prepared by the method provided by the invention is strong in fluoride removal adsorptivity and high in strength, can not be broken after long-term use, is small in mass loss without dissolution and the problem of secondary pollution, is safe and reliable, and is suitable for long-term use under the condition with large water flow pressure changes.

A clean rainwater collecting-purifying device comprises a rainwater collecting pool, a rainwater filtering pool, a water collecting cellar and a water purifier. The device is characterized in that the rainwater collecting pool at least comprises a ground brick-wall embankment, an aqueduct, a hardened ground and a rolling flexible waterproof fabric arranged on the hardened ground; the outer edge of the hardened ground is surrounded by the brick-wall embankment and the aqueduct is arranged on at least one section between the hardened ground and the embankment; the hardened ground is formed by at least one ground or a plurality of grounds which are arranged side by side and isolated by the aqueducts respectively; the aqueduct is connected with the rainwater filtering pool by a water transferring pipe; and the water collecting cellar is connected with the rainwater filtering pool by a water transferring pipe and is communicated with at least one water purifier by the water transferring pipe. The device is characterized in that the collecting efficiency is high; the product cost is low; the structure is simple and reliable; the operation is easy; the device is portable, durable and environment-friendly; the water quality is safe, etc. The device can lead the three significant indexes of water-use quantity, health index and water-taking convenience of 'safe drinking water' to reach the standard simultaneously.

The invention provides a water environment pollution risk comprehensive perception and identification system. The system comprises a water quality and quantity monitoring module and a water environment video monitoring module. The water quality and water quantity monitoring module outputs a water pollution grade corresponding to the water quality and water quantity data based on a built-in water pollution grade identification model, and the water environment video monitoring model collects a video picture of a target area and identifies whether abnormal emission exists in the video picture through the built-in video identification model. The system has the advantages that the water environment video monitoring module monitors images of the water environment in real time, abnormal pollutiondischarge events are found based on image recognition and analysis, the timeliness of abnormal response can be monitored and improved in real time, the influence of the pollution discharge events isprevented from being enlarged, and meanwhile, the water quality and water quantity monitoring module detects water quality and water quantity data of the water environment; when the physical properties such as water color and turbidity are not obviously changed, the water quality abnormity can be found in time, the identification precision is improved, and missing report is prevented.

The invention relates to an oxidation / absorption / filtration integral drinking water arsenic removal system. The drinking water arsenic removal system solves the problem of poor arsenic removal effect of the existing drinking water arsenic removal device. The arsenic removal device in the drinking water arsenic removal system consists of an inner cylinder and an outer cylinder, wherein the inside of the outer cylinder is sleeved by the inner cylinder; a porous support layer is arranged at the bottom of the inner cylinder; a three-phase separator is arranged on the top of the inner cylinder; a water inlet is formed in the bottom of the inner cylinder; the water outlet of a high-level tank is connected with the water inlet at the bottom of the inner cylinder through a water inlet pipe; an air compressor is connected with an aerator head through an air inlet pipe; the aerator head is arranged below the porous support layer; a membrane assembly is arranged on the upper part of the area between the inner cylinder and the outer cylinder and connected with a suction pump through a water outlet pipe; a sludge discharge port is formed in the bottom of the outer cylinder and connected with a sludge pump through a sludge discharge pipe. The total content of arsenic in water treated by the drinking water arsenic removal system reaches 0.006mg / L and the water quality safety of drinking water is ensured.

The invention discloses an automatic scale-cleaning shower head, which comprises a shell body, wherein a water inlet is arranged on the shell body, and a water chamber is arranged in the shell body. The water inlet is communicated with the water chamber, and a guide post is fixedly installed in the water chamber. The guide post is fixedly connected with the shell body, and a sliding sleeve is movably installed at the periphery of the guide post.. The periphery of the sliding sleeve is provided with a moving plate, and the periphery of the moving plate is matched with the shell body. A plurality of water outlets are arranged on the moving plate, and a plurality of descaling needles are fixedly installed in the shell body, correspond to the water outlets, and are matched and sealed with the water outlets one to one. A limiting piece is installed on the shell body or the guide post, and the limiting piece is used for limiting the moving-down limiting position of the sliding sleeve or the moving plate. As the automatic scale-cleaning shower head is provided with the descaling needles and the sliding sleeve which can move up and down, the sliding sleeve can do a reciprocating motion up and down, so that the water outlets and the descaling needles mutually rub, scales adhered to the inner surfaces of the water outlets are thoroughly removed, and the normal water spraying of a water injection nozzle is ensured. Therefore, the service life of the shower head can be prolonged, the descaling difficulty is reduced, and the descaling efficiency is increased. The shower head can realize descaling through switching of a water valve.

The invention discloses electro-heat equipment of an electric heater. The equipment comprises a container body, a thick film heater consisting of heating resistor elements is arranged at the bottom ofthe container body, a fluid director is arranged in the container body, and the container body or the thick film heater is equipped with a water inlet and a water outlet. The equipment is characterized in that the fluid director is equipped with a plurality of separation structures therein to divide an inner chamber of the container body into a plurality of flow passages which are communicated, and a plurality of steam holes are arranged on the flow director. The container body is divided into a plurality of flow passages, water slowly flows through the flow passages after entering from the water inlet, water is rapidly heated under the action of the heating resistor elements and slowly exhausts from the water outlet; and the steam holes are arranged on the flow director, steam which is generated by boiling of the water in the container body can be discharged from the steam holes in time, and the water in the container body can rapidly reach the fully-boiled state, and the water quality is safer.

The invention provides an integrated cement-casting slow-filtering basin. The integrated cement-casting slow-filtering basin comprises a basin body, a partition plate and a filter layer, wherein the partition plate is horizontally arranged in the basin body, water filter holes are formed in the partition plate, the filter layer is arranged on the partition plate, a water outlet pipe penetrating through the basin body is arranged on the side wall of the basin body under the partition plate, a water inlet pipe is introduced into the basin body above the partition plate, the side wall of the basin body is formed by reinforced cement concrete through pouring, the side wall of the basin body under the partition plate is 9-11cm in thickness, the thickness of the side wall of the basin body above the partition plate is 6-8cm, the filter layer is sequentially composed of a zeolite / quartz stone layer, a coarse sand layer, a first fine sand layer, an activated carbon layer and a second fine sand layer from bottom to top, and gauzes are paved between the partition plate and the filter layer as well as among all filtering layers in the filter layer. The integrated cement-casting slow-filtering basin solves the problems that the karst rocky desertification region has special geological environment and poor water quality, the water cannot be easily purified in a centralized manner due to scattered settlements, the educational status is generally low and the high-technology water quality purification technology is not suitable for the karst rocky desertification region. The integrated cement-casting slow-filtering basin belongs to the field of Karst region water quality purification.

The invention relates to a herbicide for preventing and removing semen cuscutae. The herbicide comprises an effective constituent agent A, an effective constituent agent B and an additive as the following matching ratios: the agent A is one of 20-100 parts by volume of efficient haloxyfop-methyl with the mass concentration of 95% and 2.5-12 parts by weight of quizalofop-p-ethyl; the agent B is one of 450-600 parts by weight of coumarin and 500-650 parts by weight of p-coumaric acid; the additive is 150-200 parts by weight of ethoxy modified trisiloxane with the mass concentration of 100%; the parts by weight are calculated by the active compound. The herbicide has a favorable prevention effect on semen cuscutae, has the fatality rate of up to 95%, is low in toxicity, and is safe to human bodies, livestock and water sources.