Constructed wetland to reduce the impact of polluted water: a demonstration project in Azerbaijan
In Azerbaijan several small towns and rural villages discharge their untreated sewage into the environment, contributing to the pollution of surface and groundwater. Conventional wastewater treatment plants are not the right answer to solve the problem cause they require relevant Operation and Management costs and skilled personnel not always available in remote areas. Nature Based Solutions such as constructed wetlands (CW) are perfectly fit for the use. A demonstration CW treating an estimated population of 325 inhabitants discharging their untreated sewage into the Hajiqabul lake has been built by the Kura II. The preliminary results are encouraging: the system appears very effective in removing organic matter (BOD and COD) and ammonium, showing removal rates ranging between 85% and 98%