COD

Overview

We can also provide BOD and TOC sensors.

Chemical oxygen demand is a chemical method that measures the amount of oxygen consumed when organic matter in a water sample is oxidized by strong oxidants. It is used to express the content of organic matter in water. Under certain conditions, using the amount of oxidant consumed to oxidize reducing substances in 1 liter of water sample as an indicator, the number of milligrams of oxygen required after oxidation of all liters of water sample is converted into mg/L. It reflects the degree of pollution of water bodies by reducing substances. This indicator is also used as one of the comprehensive indicators of the relative content of organic matter.

The oxidants commonly used to measure chemical oxygen demand are potassium permanganate or potassium dichromate. However, the chemical reagents used in this method are not environmentally friendly enough, and the concept of environmental protection is lost. At present, we mostly use optical methods and use ultraviolet absorption methods to find corresponding relationships and obtain numerical values.

Application

Industrial wastewater, raw water, boiler water, rural sewage treatment, etc.

Details