Common problems encountered in ETPs include:
• Inadequate treatment of pollutants: ETPs may not be designed or operated correctly to effectively remove all pollutants from the wastewater.
• Breakdowns and equipment failures: mechanical and electrical components of ETPs can break down, leading to reduced treatment efficiency.
• Unforeseen changes in wastewater characteristics: ETPs are typically designed based on the characteristics of the wastewater at the time of design, changes in the wastewater characteristics can cause problems in the treatment process.