Biological wastewater treatment is a process that uses microorganisms to break down organic matter in wastewater. This method is effective in removing pollutants, such as nutrients and pathogens, making the water safer for discharge or reuse. Common techniques include activated sludge, trickling filters, and constructed wetlands. In this treatment process, bacteria and other microorganisms consume the organic materials, converting them into simpler substances. The treated water can then be released into the environment or further processed for various uses, contributing to sustainable water management and reducing environmental impact.