Real Time Measurement Online COD Meter for Sewage

The COD value is a measure of the concentration of organic matter in water, which reflects the degree of pollution in the water body. Therefore, monitoring the COD value of water quality is essential to protect the environment and safeguard human health. The DUC2-COD online COD controller has two SPST relays which can make control and two 4-20mA current output which can also make control or output the data. If you can use RS485, the controller also support Modbus protocol. The control of COD value of sewage plants can be achieved by the following measures: 1. Strengthen sewage pretreatment: Before entering the sewage treatment system, pretreatment of sewage, such as screening, precipitation, pH adjustment, etc., can effectively reduce the COD value. 2. Biological treatment technology: biological treatment technology is one of the most common sewage treatment methods, and COD value can be effectively reduced by using microorganisms to degrade organic…