Research on the Ability of Pyrolyzed Wastewater Treatment Sludge to Remove Phosphates from Wastewater

Abstract

One of the most important goals of wastewater treatment and surface water management is to reduce the level of phosphorus concentration in water and thus prevent eutrophication. The work deals with the issues of phosphorus removal from wastewater. Phosphorus was removed from the wastewater by filtering through sludge from the wastewater treatment plant pyrolyzed at temperatures of 400 °C, 500 °C, 600 °C. The research was conducted under laboratory conditions, using an experimental stand with three filtration columns. The third column, which was filled with sludge pyrolyzed at a temperature of 600 °C, retained the phosphate phosphorus most effectively. At the beginning of filtration, its phosphorus removal efficiency reached 87%. Other columns were less efficient at the beginning of the experiment: their efficiency in removing phosphorus from wastewater was 31– 45%.