Technology partner CSIR-CMERI (Govt. of India Organization)
A poisonous and carcinogenic metalloid, arsenic is found in the environment through natural and human-made sources. The gravest danger emanates from dissolved arsenic in our drinking water. Having an effective “arsenic filter” is therefore essential for ensuring a safe supply of drinking water.
These are precipitated in the raw water and filtered out. The dissolved arsenic binds to the surface of the filtratable flocs and is thus removed from the water. A certain amount of flocculant is required depending on the arsenic concentration. Periodic analyses must be performed to determine this. The filtered sludge needs to be subsequently treated and is ultimately disposed of, in accordance with the local regulations, as residual or special waste depending on the arsenic content. Given the high, technical input involved in this process, it is an especially interesting option for very large treatment plants.