At present, sewage and industrial wastewater are mostly treated by aerobic microorganisms. Aerobic microorganisms must be decomposed into carbon dioxide, water and nitrate under aerobic conditions. In the treatment of industrial wastewater by activated sludge method, the content of dissolved oxygen (free oxygen dissolved in the treated water) is usually measured to adjust the respiratory and metabolic state of microorganisms, so as to speed up the purification process. However, the general industrial wastewater dissolved oxygen content is low, often with the help of a variety of aeration device flushing to meet the microbial oxygen supply. Dissolved oxygen affects microbial metabolism and reproduction. Therefore, controlling the content of dissolved oxygen can accelerate the oxidation and decomposition process of organic matter. The treatment of industrial wastewater by activated sludge process is generally controlled (2~4）mg/LDissolved oxygen too high or too low will affect the metabolism of microorganisms and reduce the effect of water treatment.

Dissolved oxygen is too high (greater4mg/L) will accelerate the consumption of organic matter in sewage, cause microbial aging of activated sludge due to lack of nutrition, reduce the flocculation performance and adsorption capacity of activated sludge, and the dissolved oxygen content is too low (less1.5mg/L2) The life activities of microorganisms will be inhibited, leading to the decay, disintegration and deterioration of microorganisms, thus affecting the respiration of microorganisms and the purification capacity of activated sludge, resulting in sludge floating and decay and expansion.

Therefore, in industrial wastewater treatment, the monitoring of dissolved oxygen is very important,Shenzhen Technology Co., LtdIntroduced a suitable for sewage treatment.Dissolved oxygen sensorKDS-25B,The sensor has long life, simple calibration, good reliability, and almost noCO2Such as acid gas influence, is a good helper of sewage treatment control purification process.

   In the process of industrial development, the environment has been greatly polluted. At present, my country's water pollution is still relatively serious. In order to achieve sustainable development, the country has paid more and more attention to sewage and the environment. Companies and enterprises have gradually formed environmental awareness. Sewage treatment is a long-term treatment process with a huge and long-term market. Scientific and reasonable monitoring and treatment of sewage is the general trend.

  Dissolved oxygen sensorKDS-25BIntroduction:KDS-25BYesJapan FIGAROThe company introduced an electrochemical dissolved oxygen detection sensor, no preheating, no external power supply, the output signal and dissolved oxygen content is linear, built-in temperature compensation circuit, can be directly put into the water.

Important parameters of sensor:

Measurement range:0-80mg/L

Accuracy: ±5% (Full Range)

Temperature range:5-35℃

Atmospheric pressure:81-203kPa(with10mThe water depth is quite)

Output signal:mVStage voltage