Abstract Water that has been used or contaminated by humans or the environment must undergo wastewater treatment in order to be returned to a usable state. The treatment may involve one or more of the following mechanisms: chemical, biological, physical, or a combination of these. Any level of purity can be achieved by treating water, but the expense increases as the purity increases. The needed water quality depends on the intended use of the water, such as irrigation, drinking water, or aquatic life. The purpose of research is to examine the wastewater treatment technology that is now most widely utilized. The technology selected for one application may not be the best for another. It is also easy to get, effective, and has the ability t...