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By products produced during disinfection and purification of drinking water
On the basis of consulting a large number of literature at home and abroad, this paper analyzes and introduces the disinfectants commonly used in the process of drinking water treatment, and the main organic and inorganic by-products generated by the reaction with water and organic substances carried in water, and puts forward its own research ideas on the shortcomings of this research work
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Application status and progress of circulating water disinfection technology in swimming pools _ Mao Shuzhou
Swimming pool circulating water disinfection is an effective way to remove pathogenic microorganisms in water, prevent frequent occurrence of swimming pool diseases, and ensure the health of swimmers. Starting from the aspects of theoretical research, hygienic standards and practical application, this paper mainly introduces the technological process of circulating purification treatment of swimming pool water and the commonly used disinfection technology, and puts forward the problems of disinfection by-products, storage and transportation risks of disinfectants, etc. currently existing in the disinfection link. At the same time, the research progress of related new disinfection technology is summarized, which has certain reference significance for the future application of swimming pool circulating water disinfection technology.
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Special equipment for reclaimed water sewage disinfection -- open channel ultraviolet sterilizer
1、 Contact person for product introduction: Ms. Wen 0311-80801285, 15130668266 QQ: 1462476187 frame type (open channel type) ultraviolet sterilizer is used to sterilize the water flowing through the ditch by sending out short wave ultraviolet rays with the central radiation wavelength of 253.7 nm through the ultraviolet lamp arranged on the ultraviolet disinfection module in the slotted ditch, so as to solve the problem of exceeding the standard of the bacteriological indicators of the treated sewage, Make the bacteriological standard of the final discharged water body meet and exceed the relevant national discharge standards and water quality standards.
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Chlorate ion (CLO3 -) in drinking water disinfection effluent
As one of the by-products in drinking water disinfection (such as OCl - and ClO2) and effluent, the potential harm of phthalate ion is not very clear, but the relevant foreign departments have begun to study its animal and human toxicity, It has been included in the potential harmful disinfection by-products and is proposed to specify the maximum allowable concentration in drinking water. This paper analyzes and introduces the production of phthalate in the disinfection process, the potential formation of nitrogen salt ions of different disinfectants, and puts forward relevant control methods to attract domestic attention and research in this regard ,
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Research progress on disinfection by-products of drinking water in pipe network
In addition to being able to be degraded by microorganisms, disinfection by-products in the pipe network can also be chemically transformed under the influence of pipes. Different pipes will affect the AOC and HAAs content of water quality to varying degrees. There is a good linear relationship between the contents of AOC and HAAs. Precursors are similar with similar change laws, AOC can understand the generation of disinfection by-products. The disinfection by-products show obvious seasonal changes in the pipe network, which is significantly higher in summer than in other seasons. With the increase of residence time, disinfection by-products and bacteria show an upward trend, affecting water quality.
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Study on the application of on-site electrolysis of sodium hypochlorite in disinfection of wastewater treatment plant effluent
With the increasing improvement of effluent discharge standards of sewage plants, the control of fecal coliforms in the drainage is becoming more and more strict. The on-site electrolytic sodium hypochlorite generation system is An ideal environment-friendly chlorine disinfection technology can effectively kill fecal Escherichia coli in the effluent of urban sewage treatment plants. Due to different raw water quality The germicidal efficacy will vary. Sodium hypochlorite can remove ammonia nitrogen in raw water to a certain extent, but it is possible to oxidize the residual organic nitrogen in raw water, thus making the ammonia nitrogen content
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The packaging material of the drug tablet directly contacts the drug, so it belongs to the first class of drug packaging. Drug is a special commodity, and its efficacy and quality are directly related to human health and safety. The packaging materials and structural forms used must ensure the efficacy as well as the reliability and convenience of drug use. Therefore, when selecting packaging materials, pharmaceutical manufacturers should understand some properties, characteristics In order to combine some special requirements of drugs, reasonable and accurate selection of pharmaceutical packaging materials
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Vertical quantitative tablet sesame pellet bagging machine: the bagging machine is equipped with advanced sensors and counters, which can automatically count according to the set bagging quantity. When the bag reaches the preset quantity, the counter will send a signal, and the equipment will automatically stop the bagging operation to ensure that the number of particles in each bag is accurate and consistent.
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This model is the end tool model of SolidWorks air preparation arm. This device improves people's work efficiency and brings great convenience to people's daily life. The model reflects the shape of the device more realistically. I hope you like it
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The first power device and the mixing device, and then the first power device drives the mixing parts through the mixing device to fully mix the raw materials, so as to avoid the problem of slow reaction speed between raw materials during preparation, improve the reaction efficiency of the device, and save the preparation cost of auxiliary components. When the mixing parts rotate, they drive the raw materials to move in the reaction tank, At the same time, the auxiliary components will block it, so that the raw materials can be further mixed evenly, further improving the reaction speed of the device
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Discussion on the selection of hot water preparation method in a hotel
Aiming at the hot water preparation problem of a hotel in central and southern China, this paper introduces the possible combination modes, explains their respective operation modes, advantages and disadvantages, and discusses the hot water preparation cost, initial equipment investment and annual operation of the possible hot water preparation modes
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Preparation of nano silver oxide dispersion
Nano scale composite high silver oxide dispersion was prepared by liquid-phase oxidation precipitation method. The effects of temperature, oxidant dosage, supersaturation, dispersant dosage and final reaction time on the particle size and purity of the dispersion were discussed. The best preparation process of the product was obtained: nonionic polyethylene DJ2004 was used as dispersion stabilizer.
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The driving motor, connecting plate and the first connecting plate greatly improve the automation degree of the device, so that the sample can be effectively dried in all directions, ensuring the quality and effect of drying, and solving the problem of connecting pipes, air extractors and filtering devices in the existing technology that the degree of automation is low, and it is difficult to achieve all-round drying operations, and the drying effect is poor, The utility model can filter and collect the air inside the drying box, and can collect and discharge the surplus heat into the drying box, thus ensuring the recycling of heat energy, improving the practical performance of the device, and solving the problem that the device in the prior art has a low recovery rate of heat, and the surplus
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The device is a common gas laboratory preparation device for high school chemistry, which is mainly used for the reaction between solid and liquid. The experimental device includes some common chemical instruments, such as iron stand, round bottom flask, separating funnel, cross clamp, etc., and the size of the model is drawn according to the size of the actual instrument
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The utility model comprises a mixing tank and a reaction kettle, which are connected with the reaction kettle through a connecting pipe. The mixing tank is provided with a first feed pipe and a housing, the housing is provided with a first motor, the first motor is provided with a first motor rod, the first motor rod extends to the inside of the housing, the first motor rod is provided with a rotary table, and the inside of the housing is also provided with a sliding rod. The reaction kettle is equipped with a second feed pipe, a discharge pipe and a second motor. The second motor is equipped with a second motor rod, which extends to the inside of the reaction kettle. The second motor rod is equipped with a first mixing blade, which is installed inside the reaction kettle. The mixing device for preparing the raw material of mineral processing agent is simple in structure and convenient in use. Pass
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Preparation and Properties of Silica from Rice Hull
In this project, high-quality white carbon black was prepared from rice husk, the best experimental conditions were determined through orthogonal experiments, and the white carbon black obtained was characterized by XRD, SEM, TEM, etc. The results showed that the white carbon black obtained in this experiment was of nanometer level, excellent performance, and low price, indicating a new way for comprehensive utilization of rice husk.
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Fireproof materials generally include fireproof boards and fireproof doors. Fireproof boards are the most commonly used materials in the market at present. Their advantages are fireproof, moisture-proof, wear-resistant, oil resistant, easy to clean, and there are many varieties. Fireproof suspended ceiling is installed at the exit passageway, stairwell and corridor of the building to ensure people's safe evacuation in case of fire and protect people from the spread of fire. After the preliminary processing and molding of the fireproof board, several fireproof boards are superimposed as required to increase its strength. The common method is to apply special glue between the joint surfaces of several fireproof boards, The multi-layer fireproof board is hot pressed by the heat conduction pressing plate into the
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Cad drawing of structure construction of a disinfection workshop
The superstructure type of the project is frame structure, and the foundation adopts manual hole digging pile foundation, one layer. There are 7 drawings, including: general description of structure, foundation structure layout, pile shaft detail, beam layout plan, slab layout plan, shear wall construction drawing.
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Disinfection method of pharmaceutical clean room
For the disinfection methods and measures in the pharmaceutical production process of Chinese patent medicines, matters needing attention in the design process, and the impact of space volume on the sustainability of disinfection should be considered.
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GB28232-2020 Hygienic requirements for ozone disinfection
GB28232-2020 Hygienic Requirements for Ozone Sterilizer. This standard specifies the requirements for raw materials, technical requirements, application scope, use methods, inspection methods, transportation and storage, nameplates and instructions for ozone sterilizers for reference.
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The orthopedic medical screw classification disinfection device includes disinfection cabinet, screw placement component, ultraviolet disinfection processing component and ultrasonic disinfection processing component. The orthopedic medical screw classification disinfection device has simple structure, convenient operation, and can visually display the disinfection process. The medical screws in different disinfection states can be placed in different areas and the sterilized medical screws can be taken at any time
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Produced by SolidWorks, the content can be edited, the color can be changed, the wooden structure can be used to put the disinfection cabinet in the middle, the back wire position has been reserved, and four wheels have been added at the bottom. Welcome to download, and you can contact me if you need other drawings
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The model is a sterilization and disinfection device for bus air conditioner, which can be installed at the air return outlet of the bus. The filter screen, electric ion generator, ozone generator and ultraviolet lamp can be added inside. It has multiple effects, such as powerful sterilization, effective reduction of PM2.5, elimination of smoke odor, decomposition of harmful gases, improvement of air quality in the vehicle, supplementation of air vitamins (negative oxygen ions), etc., so that drivers and passengers can keep away from viruses, germs, vehicle odor and air pollution, and enjoy the natural air freshness on the journey
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Cold chain logistics intelligent disinfection and sorting equipment, including rotating device, also including rotating disc, fixture assembly, carrier frame device, unloading device, unloading push plate, material conveying belt device, output belt device and light disinfection component. The rotating disc is fixedly connected with the rotating shaft of the rotating device. Each group of fixture assembly includes carrier frame device and unloading device, The carrier frame device includes a unloading pusher plate, a unloading device is used to push the unloading pusher plate to slide, a material conveying conveyor belt device is used to transport material boxes, several groups of output conveyor belt devices are used to transport materials out, a light disinfection component is used to disinfect the material boxes, and material boxes of various shapes and specifications can
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The intelligent disinfection car based on WIFI control is a complex and huge system, and its control core is 51 single chip microcomputer. Various sensors are used to collect external environmental information and transmit the received information to the main controller, which then controls each module to execute corresponding actions. The manufacturing cost of intelligent disinfection trolley based on WIFI control is relatively moderate, and it is widely used in our daily life. The intelligent disinfection car based on WIFI control consists of WiFi module, single chip module, water pump, bucket, electromagnetic relay, video transmission module, motor module, spray mode, etc
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The utility model provides a B ultrasonic probe disinfection device which is convenient for use. The utility model comprises a work box, a cleaning mechanism, a drying device and a disinfection mechanism, wherein the work box is provided with a cleaning groove, the disinfection mechanism is fixedly arranged at the side of the cleaning groove, the drying device is fixedly installed at the side of the work box, the cleaning mechanism comprises a rotating frame and a first rotating shaft connected with a water level shaft in the cleaning groove, and the rotating frame is fixedly sleeved on the first rotating shaft, A plurality of holding boxes are fixedly installed on the rotation, the holding box is provided with a water inlet hole, the working box is also fixedly installed with a power mechanism to drive the rotation of the first rotating shaft, and the disinfection mechanism is composed of
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It can be used for folding disinfection trolley UV lamp disinfection of aircraft cabin, high-speed railway warehouse and hospital public seats. It is small and convenient to use. With wheels at the bottom, people can push and walk in STEP format. Welcome to download and learn
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This is a box type high-pressure sprayer. The automatic high-pressure sprayer is mainly used for landscape gardening, fog making, enclosure spraying, environmental protection, dust removal and cooling, disinfection and deodorization, and the equipment includes filter element pressure reducing valve, pipeline, cabinet and other parts. Welcome to download
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Supply of food processing sterilization equipment
NEUTHOX germicidal solution is a compound disinfection solution, which is mainly composed of hypochlorite, and contains ozone, chlorine dioxide, hydrogen peroxide and other highly effective disinfection ingredients. It can not only quickly kill all bacteria, but also remove the biofilm, so as to achieve true and complete sterilization. The germicidal efficacy and efficacy of any single ingredient disinfection product cannot be compared with that of NEUTHOX germicidal solution. Any bacteria has no tolerance to it, which is efficient, broad-spectrum, safe and environmentally friendly.
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Study on Chlorination Disinfection Process of Different Raw Water
The laboratory and productive tests of the original disinfection process of two water sources in Shanghai were carried out with the combined grasping process and the free grasping process It is believed that the raw water of Huangpu River should be disinfected by combined chlorine, while the raw water of Yangtze River can be disinfected by free chlorine. It is necessary to change the one-time grasping method, reduce the pre grasping amount, and increase the chlorine dosage of filtered water
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Control and management of chloramine disinfection of factory water
The factory water and Determination data and disinfection effect of residual chlorine, ammonia nitrogen and disinfection by-products in pipe network water, the attenuation of chloramine and ammonia nitrogen in pipe network was analyzed, and the effect of pH on chloramine in water was discussed The concentration of lead and zinc in pipe network water increases due to the influence of existing forms in and ammonia nitrogen. It is proposed that in order to improve the water quality of the pipe network, it is necessary to supplement at the appropriate process location in the production process On line ammonia analyzer and chloramine analyzer, select appropriate Cl2 ∶ NH3-N, and strictly control the amount of ammonia nitrogen delivered from the factory to inhibit the nutrient source of ammonia oxidizing bacteria. It is recommended that ammonia nitrogen Nitrate is included in the daily inspection items of pipe network water control.
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The intelligent dish dispenser with disinfection function includes a rectangular shell, a support seat, a transfer component, an ultraviolet disinfection component and a laser sensor component. One side of the rectangular shell is provided with a dish outlet and an intelligent face brushing touch screen. The support seat is in a shell shape, and its upper end is provided with a slide connected with the dish outlet. Compared with traditional intelligent dish dispensers, First, the ultraviolet disinfection component of the device can sterilize the stacked dinner plates in real time, so that the meal takers can get the disinfection treatment of the dinner plates. Secondly, through the cooperation of the transfer component, the slide way and the laser sensor component, the dinner plates can be driven one by one to slide out of the plate mouth, so that the automatic
