Application of heavy metals pollution index on two types of constructed wetland

الملخص EN

Two types of constructed wetland (CW), vertical subsurface flow (VSSF) and horizontal subsurface flow (HSSF), both planted with Phragmites australis, were established to treat wastewater.

it was retained for three days in which the samples were collected 24, 48, and 72 hours after the initial filling.

the present study aimed to evaluate the applicability of the HPI index using some heavy metals and investigate the degree of heavy metal pollution using this index.

the dissolved metals declined in general throughout the operation days in both systems.

vertical and horizontal subsurface flow systems effectively removed Al, Cd, Cu, and Ni.

the decline in dissolved metals concentration was clearly observed in the HPI value.

therefore, HPI can be a very effective method and easy tool to review the level of pollution in heavy metals