Describe two proper methods of handling wastewater from factories
1. Biological treatment: In this method, the wastewater is treated using biological agents such as bacteria, fungi, and other microorganisms that break down organic matter present in the water. These organisms feed on the contaminants and convert them into harmless byproducts such as carbon dioxide and water. Biological treatment is effective in removing a wide range of pollutants from wastewater, including organic compounds, nutrients, and heavy metals.
2. Physico-chemical treatment: This method involves using physical and chemical processes to treat wastewater. Physical processes such as filtration, sedimentation, and flotation are used to remove solid particles from the water. Chemical processes, on the other hand, involve the use of chemicals such as coagulants, flocculants, and oxidizing agents to remove dissolved pollutants and neutralize harmful substances in the water. Physico-chemical treatment is effective in removing a wide range of contaminants from wastewater, including suspended solids, pathogens, and toxic substances.