What is it about?
The municipal wastewater treatment plant (WWTP) effluent was collected and 4 fractions including hydrophobic acidic (HPOA), hydrophobic alkaline (HPOB), weakly hydrophobic (WHPO) and hydrophilic (HPI) organics were isolated from the effluent by using DAX-8/XAD-4 resin. We use potentiodynamic polarization (PDP) and electrochemical impedance spectroscopy (EIS) to investigate corrosion characteristic of N80 carbon steel in the different water samples and control samples. In contrast with control samples, the corrosion rate of N80 carbon steel decreased 41%, 23%, 18% and 4% in the presence of HPOA, HPOB, WHPO and HPI, respectively.
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Why is it important?
Water used in cooling water systems account for the major part of industrial water consumption. With the increasing shortage of water resources, Secondary-treated municipal wastewater (MWW) could provide a viable alternative source to freshwater for industrial cooling water systems.
Perspectives
It is important for the wastewater reuse of the municipal wastewater treatment plant (WWTP) effluent.
Zhanhui Shen
Henan Normal University
Read the Original
This page is a summary of: Inhibition effect of dissolved organic matter in secondary-treated municipal wastewater on corrosion of N80 carbon steel, Water Science & Technology Water Supply, February 2019, IWA Publishing,
DOI: 10.2166/ws.2019.035.
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