ABSTRACT
Cleaning ourselves, our clothing, our homes, our eating utensils, and so on, has been a concern of human beings since the beginning of human society. This serves an aesthetic purpose, but it is also important in the control of disease and maintenance of good health. The cleaning process almost always involves the use of water as a solvent and a carrier of the removed contaminants. This wastewater often is discarded into waterways, where it can cause adverse effects.
