Wastewater Operations Various biological processes break down the organic matter present in wastewater, for example, soap, human waste, oil, and food. The microorganisms metabolize the organic matter through biological treatment, which can be divided into three categories, namely, Aerobic processes- oxygen is used to filter. Anaerobic processes- oxygen is not used to filter.

Composting mix and sawdust or other carbon sources to filter. Chemical Water Operation

This involves the removal of chemicals and impurities from water. Chlorine, an oxidizing chemical, is often added to kill bacteria, which with time decomposes in the water by adding contaminants to it. Ozone is also used for this purpose. Another technique utilized for this operation is neutralization, where an acid or base is added to bring water to its natural pH level of 7.