What are two types of filtration?

Two primary types of filtration are mechanical filtration and biological filtration, each serving distinct purposes in separation processes. Mechanical filtration physically removes solid particles from a fluid by passing it through a medium with specific pore sizes, such as sand, cloth, or paper. This method relies on the size difference between the particles and the pores, trapping larger contaminants while allowing the fluid to pass through. It is commonly used in water treatment plants, swimming pools, and air conditioning systems to remove debris, sediment, and dust. Biological filtration, on the other hand, uses living microorganisms to break down dissolved organic waste and toxins. This type is prevalent in aquariums and wastewater treatment facilities, where beneficial bacteria convert harmful ammonia into less toxic substances like nitrites and nitrates. While mechanical filtration handles visible solids, biological filtration addresses invisible chemical pollutants, making them complementary processes in many comprehensive purification systems. Understanding these two types helps in selecting the right method for specific cleaning or separation needs.