Biological treatment is a method used to remove contaminants from water or soil by utilizing living organisms, such as bacteria, fungi, or plants. These organisms break down harmful substances into less toxic or non-toxic forms, effectively cleaning the environment. This process is often employed in wastewater treatment facilities and in the remediation of polluted sites. One common type of biological treatment is bioremediation, which specifically targets hazardous waste. In this process, microorganisms are introduced to contaminated areas to accelerate the natural degradation of pollutants. This approach is often preferred due to its cost-effectiveness and minimal environmental impact compared to traditional chemical treatments.