Corrosion in waste water treatment plants

摘要

Wastewater-related problems are generated in the liquid phase, during the process of conveying the wastewater from its inception to treatment area. While traveling through sewer lines, the wastewater can become anaerobic or septic (the dissolved oxygen can become depleted) as a result of the metabolic processes of microbes commonly found in wastewater. It is estimated that billions of dollars are lost in corrosion damage in waste water treatment plants. These plants process aggressive and corrosive liquids to travel through the piping system resulting corrosion. Corrosion at waste water treatment plants gets very litde attention from high-power managers and policymakers, although the individuals who operate and maintain the plants are acutely aware of corrosion problems. In the industry, there have been number of large corrosion-related failures widiin waste waste treatment plants. These failures have been traced to corrosion and deterioration of concrete and are expected to cost billions of unplanned rehab and replacement dollars. Each year, corrosion damages cause an enormous burden on companies.