Suzhou Delfino Environmental Technology Co., Ltd.
Welcome to Delfino--2024 IFAT Munich May 13-17
The Munich Environmental Protection Exhibition in Germany - IFAT MUNICH will be held from May 13 to 17, 2024 at the New International Expo Center in Munich, Germany. Founded in 1966, it is currently the world's largest professional environmental protection trade exhibition. As one of the important international exhibitions certified by UFI, it leads the latest trend in the international environmental protection industry and is recognized as a global benchmark in the industry. The exhibition is hosted by Messe Munich GmbH. The exhibition is
Welcome to Delfino--2024 ASIA WATER (Malaysia)
Asia water 2024 April 23-25 Kuala lumpur convention centre, Malaysia Region's leading water and wastewater event for de
Why and how to monitor the pH value of circulating cooling water?
Circulating cooling water requires the use of an online pH analyzer to monitor the pH value, because the pH value can affect the corrosion and precipitation of the cooling water. If the pH value of the cooling water is too high or too low, it will lead to increase corrosion of metal pipes and equipment. It will also affect the formation of scale and sediment in the cooling water, reduce the cooling effect, and increase energy consumption and maintenance costs. Therefore, monitoring and adjusting the pH value of cooling water can effectively
Introduction to the detection method of COD BOD5 NH3-N in sewage treatment plants
Sewage treatment plants are sewage and wastewater discharged from pollution sources. Because the total amount or concentration of pollutants is high and does not meet the discharge standard requirements or does not meet the environmental capacity requirements, thus reducing the water environment quality and functional objectives, it must undergo artificial intensification treatment. place. It is generally divided into urban centralized sewage treatment plants and decentralized sewage treatment plants for various pollution sources, which are
What is the ion selective electrode method?
Ion selective electrodes (ISE) are modern analytical tools that enable rapid and direct determination of ion activity in sample solutions. Together with a suitable ion meter or titrator, the ISE forms an affordable and versatile measuring system. Like the ph theory, the ISE theory is also based on the Nernst equation. ISE's approach is easy to understand and simple to apply in many situations. Ion selective electrodes are used to measure the activity of the ions being measured
What are the effluent quality standards for reverse osmosis water treatment?
With the continuous acceleration of industrialization and urbanization, water pollution problems are becoming more and more serious. How to correctly treat sewage has become the number one problem in the construction of modern cities. As an important water treatment technology, reverse osmosis technology is widely used in various fields. Water quality analysis instruments such as pH analyzer, conductivity analyzer, and ammonia nitrogen analyzer will be used in reverse osmosis water quality monitoring. So what are the standards for effluent
What is TDS? How to detect the TDS value of water?
TDS is the abbreviation of total dissolved solids, also known as total dissolved solids. The measurement unit is mg/L, which indicates how many milligrams of dissolved solids are dissolved in 1 liter of water. The higher the TDS value, the more dissolved substances the water contains. Total dissolved solids refers to the total amount of all solutes in water, including the content of both inorganic and organic matter. Generally, the conductivity value can be used to roughly understand the salt content in the solution. Gen
What is the difference between temperature compensation of conductivity and pH?
The conductivity is closely related to the degree of dissociation of the electrolyte in water and the migration speed of ions, and the degree of dissociation and migration speed are related to the temperature of the solution. As the temperature increases, the conductivity of the solution increases; on the contrary, the conductivity decreases. In order to overcome the influence of temperature and make the conductivity of different solutions at different temperatures comparable, when measuring conductivity, it is generally accepted that 25℃
What is the impact of ammonia nitrogen content on aquaculture water?
Ammonia nitrogen refers to the nitrogen present in the water in the form of free ammonia NH3 and ammonium ions NH4+. Ammonia nitrogen is an important water quality indicator that has attracted much attention in aquaculture. Ammonia nitrogen in aquaculture water bodies is composed of non-ionized ammonia(NH3-N) and ionic ammonium(NH4+-N). It mainly comes from the transformation and decomposition of nitrogen-containing substances, including inorganic and organic nitrogen fertilizers, excreta and residues of aquatic products. Remaining bait and
How does the sewage treatment plant deal with the problem of excessive ammonium?
Excessive ammonina nitrogen in water bodies is mostly related to human activities, such as wastewater generated from industrial production, agricultural activities, and sewage treatment. If the high concentration of ammonium nitrogen in these wastewater is not treated or these are problems in the treatment process, it will be discharged directly and cause excessive ammonia nitrogen in natural water bodies. Another situation is when a large amount of organic matter enters natural water bodies, it can also cause ammonia nitrogen to exceed the
What is the sodium difference of pH glass electrode?
pH is a scale of hydrogen ion activity in a solution, which is generally a measure of how acidic or alkaline a solution is. The pH value refers to the logarithm of the reciprocal of the hydrogen ion activity of the solution. The closer the pH value is to 0, the more acidic the solution is, and conversely, the closer the pH value is to 14, the more alkaline the solution is. At room temperature, a solution with pH=7 is called a neutral solution. The glass electrode pH sensor has high measurement accuracy and is easy to operate. It is the most
What is the impact of the pH value of tap water on users?
The water supply(tap water) in the city mainly draws from rivers, lakes, groundwater, and surface water through the water intake pumping stations of the waterworks. The waterworks are processed by the waterworks in accordance with the standard through sedimentation, disinfectant, filtration and other processes, and are finally transported to the users in various areas through the water distribution pumping stations.Nowadays, most tap water disinfection uses chlorination method. The main
What water quality parameters need to be monitored in cooling towers?
A cooling tower is a device used to reduce heat in industrial equipment, power plants, and other large building. They lower the temperature of the water by bringing it into contact with air. In a circulating water system, water is used to cool the heat generated in equipment or processes. The hot water first flows into the top of the cooling tower through pipes, and is then dispersed into a thin water film, which is evenly distributed through fillers or nozzles in the tower. At the same time, through the action of fans or blowers, the air i
There are two basic types of conductivity, including contact conductivity and toroidal conductivity. The main difference between these two types of conductivity design is how the sensor is built. Because the two sensors are constructed differently, each is suitable for different applications. Which sensor to use depends on the conductivity of the water, the concentration of dissolved solids in the water, and the corrosive nature of the water. Toroidal conductivity sensors are the best choice for measuring water containing large amounts of c
What parameters are monitored for water quality in the food and beverage industry?
Water used in food production is closely related to food quality. Some common food quality problems such as discoloration, fading, staining, odor, turbidity, sedimentation, etc. may be caused by water quality. Water used for food production can be divided into groundwater and surface water according to the source; it can be divided into soft water, hard water, alkaline water, acid water, and salt water according to the water quality; it can be divided into production raw material water and non-process water according to the purpose. The wat
What is the difference between pure water and ultrapure water?
In the water treatment industry, we often hear about pure water and ultrapure water, so what is the difference between them? Whether it is pure water or ultrapure water, the conductivity value is a standard to measure the difference between them. How to monitor the conductivity value of pure water and ultrapure water? The ASCK stainless steel series online conductivity sensors developed and produced by Daruifuno have different K constants for different applications. Usually the conductivity value of pure water and ultrapure water is very lo
What does RS-485 mean and what is the function of RS485 online pH controller?
Current electronic devices communicate with computers through serial ports. RS485 is one of the traditional serial interfaces widely used at present. RS485 is very common in industrial automation and is used in industrial networks, including Modbus, profibus DP, ARCNET, BitBus, WorldFip, LON, Interbus and other non-standard networks. Currently, the serial RS485 port is considered the most efficient method of serial communication. The online pH controller developed and produced by Daruifuno has a two-wire RS485 interface. So what exactly is
What is the analog 4-20mA current output?
4-20mA analog output is a common analog control method, usually used by the controller to remotely transmit sensor signals. Its principle is to convert the sensor signal into a 4-20mA analog signal, and then transmit it to the control system. 4-20mA analog output has good stability, reliability and high accuracy, so it has been widely used in the field of industrial control. The 4-20mA .DC signal system is the analog signal transmission standard used by the international el
What are the water quality monitoring parameters for pharmaceutical process water?
Pharmaceutical water is a widely used auxiliary material in drug production. It is widely used in the drug production process and the preparation of pharmaceutical preparations. It is also used as a solvent, rinse agent, etc. The quality of pharmaceutical water directly affects the quality of drugs and is closely related to the safety of drugs. Pharmaceutical water can be divided into drinking water, purified water, water for injection, and sterile water for injection according to its different scope of use. There will be some differences i
What are the monitoring indicators for papermaking wastewater quality?
Water quality indicators are the main basis for monitoring, evaluating and pollution control of water bodies. Including physical indicators (suspended solid content, total solid content, turbidity, temperature, color, conductivity, etc.), chemical indicators (biochemical oxygen demand, chemical oxygen demand, total organic carbon, total organic chlorine, etc.), biological indicators (Total number of bacteria, number of E. coli), among which suspended solids content, biochemical oxygen consumption, and chemical oxygen consumption are current
What is the difference between suspended solids and turbidity?
In sewage treatment, we often see monitoring indicators of SS and turbidity, so what do these two indicators mean? What is the difference between them? First of all, the concepts of the two are completely different. SS is the abbreviation of suspended solids, which refers to solid matter that cannot pass through the filter(filter paper or filter membrane), including suspended solids and dissolved solids. The unit is mg/L. It mainly refers to insoluble solids such as soil, sand, and animal and plant residues. Impurity particles with a diamet
What are the advantages and disadvantages of measuring COD by UV absorption method?
The basic measurement principle of the UV online COD sensor is based on the absorption of ultraviolet rays by organic matter in sewage. When organic substances containing conjugated double bonds or polycyclic aromatic hydrocarbons are dissolved in water, they absorb ultraviolet light. Therefore, by measuring the absorption of 254nm ultraviolet light by these organic substances, we can evaluate the degree of pollution of water bodies by these organic substances. UV method online C
How to use the COD controller to calibrate the COD sensor?
COD is the amount of oxidant consumed when a certain strong oxidant is used to treat water samples under certain conditions. It reflects the degree of material pollution in the water. The greater the chemical oxygen demand, the more serious the pollution by organic matter in the water. COD is expressed in mg/L, and the COD value can be monitored through water quality monitoring instruments. The online COD sensor COD351 developed and produced by Daruifuno adopts the principle of ultraviolet absorption method. By measuring the absorption degr
What are the types and measurement principles of conductivity sensor?
conductivity sensors are divided into electrode-type conductivity sensors, inductive-type conductivity sensors and ultrasonic conductivity sensors based on different measurement principles and methods. The electrode-type conductivity sensor uses the resistance measurement method to measure conductivity based on the principle of electrolytic conductivity. The conductivity measurement electrode behaves as a complex electrochemical system during the measurement process. The inductance-type conductivity sensor measures the conductivity of the l
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