Activated Carbon for Bromate Removal: Safe Solution for Water Purification

Today, the pollution problem in drinking water resources and the improvement of waste quality standards cause ozone to be preferred in drinking water treatment technology with its strong oxidation capacity and fast reaction speed advantages.

However, ozone water purification reacts with bromide ions commonly found in drinking water sources, producing bromate, an undesirable byproduct. Bromate is a carcinogenic substance that poses a potential risk to human health and is, therefore, an important parameter that must be kept under control in terms of water safety. In this article, we will focus on the results of various tests from Carbontech on the effect of activated carbon on bromate removal.

In tests conducted by Carbontech, the average removal rate of UV254 in filtered water subjected to ozone treatment was 44.5%, CODMn was 20.6%, and TOC was 8.5%. By converting activated carbon into biological activated carbon, the removal effect of UV254 decreased, but the removal rate of TOC increased. A linear relationship was observed between Br- concentration and BrO3- formation in this process.

Tests with 200ug/L bromide ions in filtered water showed that a 1.5mg/L ozone dosage could keep bromate production below the national standard of 10ug/L. As the ozone dosage increases, the amount of bromate produced increases rapidly.

Carbontech's recommended activated carbon solution showed an average bromate removal rate of 51.6%. The bromate removal effect of activated carbon converted into biological active carbon gradually increased and reached 71.1%. During this process, the bromate content of the final wastewater decreased significantly and became in line with national standards.

Carbontech's research results provide an effective solution to reduce the impact of bromate in terms of water quality and safety. It provides a scientific reference for designing and applying activated carbon ozone technology, allowing safe and effective bromate control in water treatment plants.

You can contact Carbontech for more information.