Suzhou Delfino Environmental Technology Co., Ltd.
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What is the impact of the pH value of tap water on users?
Overview 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...
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,...
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...
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...
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...
What does RS-485 mean and what is the function of RS485 online pH controller?
Overview 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...
What is the analog 4-20 mA current output?
Overview 4-20mA analog output represents a prevalent analog control technique, predominantly utilized by controllers for the remote transmission of sensor signals. This method involves converting sensor signals into a 4-20mA analog signal, which is then transmitted to the control system. Owing to its excellent stability, reliability, and high precision, the 4-20mA analog output has found widespread application in industrial control settings. The 4-20mA DC signal system is the analog signal...
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...
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...
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...
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 COD sensor is...
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...
What are the types and measurement principles of conductivity sensor?
Overview 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...
What is the principle of amperometric residual chlorine sensor?
With the improvement of people's living standards and the enhancement of environmental awareness, water quality and safety issues have attracted increasing attention. In order to ensure the safety of water supply, disinfectants are widely used, but excessive amounts of disinfectants are harmful to the human body. At this time, we need to use a residual chlorine sensor to monitor water quality. Residual chlorine sensor is a sensor used to monitor residual chlorine in water. The working principle...
What parameters of agricultural irrigation water need to be monitored?
Water resources are very precious, and agriculture is an important industry for the development of a country. Water has a very important impact on the quality and products of grain, cotton and vegetables. If sewage is used for irrigation, the quality of agriculture products will decrease, they will become perishable and difficult to store, and toxic substances in the crops will increase, which will cause harm to human body. Therefore, monitoring agriculture irrigation water can promote the...
What parameters should be monitored in swimming pools?
The swimming pool is a place for people to exercise and relax. Especially when the weather is hot, people like to go to the swimming pool. But for swimming pool water, it is very important to disinfect and replace the water regularly. People are also more concerned about water hygiene, which is closely related to human health. So waht indicators do we need to monitor for swimming pool water? The main indicators tested in swimming pools include: water temperature, turbidity, free chlorine, pH...
What is MLSS and how to measure MLSS of water quality?
Overview Activated sludge concentration refers to the suspended solids content of the mixed liquid at the outlet of the aeration tank, represented by the symbol MLSS, and its unit is mg/L. It is used to measure the amount of activated sludge in the aeration tank. The total amount of MLSS includes the following four aspects: active microorganisms, organic matter adsorbed on activated sludge that cannot be biodegraded; residues of microbial self-oxidation; and inorganic matter. So how to monitor...
What is COD and how to measure the COD in water?
COD is the abbreviation of chemical oxygen demand, which is the amount of oxidant consumed when a certain strong oxidant is used to treat water samples under certain conditions. It is an indicator of the amount of reducing substances in water. Reducing substances in water include various organic substances, nitrites, sulfides, ferrous salts, etc., but the main ones are organic substances. Therefore, chemical oxygen demand is often used as an indicator to measure the content of organic matter in...
What are the parameters for routine surface water monitoring?
surface water refers to the general term for dynamic water and static water on the land surface, including various liquid and solid water bodies, mainly rivers, lakes, swamps, glaciers, ice caps, etc.. It is one of the important sources of water for human life and a major component of water resources in various countries. Rivers are widely distributed, have rapid water renewal, and are easy to access. They have always been the main water source for human development and utilization. Lakes and...
What factors will affect the value of ORP in the water treatment process?
? Overview ORP has good application prospects in water quality treatment, circulating water treatment, desulfurization wastewater treatment, water treatment equipment, etc.. Since many redox reactions occur in wastewater treatment, and the factors that affect ORP in each reactor are also different, it is difficult to determine which factor is mainly responsible for the change in ORP. For example, there are many organic substances in the activated sludge treatment system. Large changes in the...
How to measure the water dissolved oxygen value?
? Overview Dissolved oxygen is a parameter that characterizes the concentration of oxygen in an aqueous solution. It is free oxygen dissolved in water. The unit of dissolved oxygen is mg/L, expressed in milligrams of oxygen per liter of water. The amount of dissolved oxygen in water is an indicator of the self-purification ability of water. High dissolved oxygen is conducive to the degradation of various pollutants in the water body, so that the water body can be purified faster; conversely,...
What does pH actually stand for?
What is pH and what does pH actually stand for? pH, also known as hydrogen ion concentraction index and pH value, is a scale of hydrogen ion activity in a solution and a measure of the acidity and alkalinity of the solution. The pH value actually stand for the concentraction of hydrogen ions. The concept of pH was first proposed by Danish biochemist S?ren Peter Lauritz S?rensen in 1909. p stands for the German potenz, meaning force or concentration, and H (hydrogen ion) stands for hydrogen ion...
What is turbidity and how is turbidity measured?
turbidity is a measure of the decrease in liquid transparency caused by the presence of light-scattering substances in the water. suspended and colloidal particles in water will scatter and absorb light passing through the sample. The scattering of light produces turbidity. Turbidity is characterized by the light scattering characteristics of particulate matter in the sample. The measurement result unit is NTU. Turbidity refers to the degree of obstruction caused by suspended solids in water...
What turbidity range is safe for drinking water?
turbidity refers to the degree of obstruction of a solution to the passage of light, which includes the scattering of light by suspended matter and the absorption of light by solute molecules. The turbidity of water is not only related to the content of suspended substances in the water, but also to their size, shape and refractive index. Turbidity is usually suitable for water quality determination of natural water, drinking water and some industrial water. So what is the safe range of...
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