Grease and Environment

Most people mistakenly think that the main source of water pollution comes from organic matters. The truth is the organic matters are naturally decomposed by groups of aerobic bacteria. The bacteria uses oxygen dissolved in the water to decompose the organic matters. The process goes well when there’s enough oxygen in the water. The decomposed organic matters are then turned to be food for aquatic plants.

However, once the water is contaminated with grease, the grease covers the surface of the water. As a result, oxygen fails to reach the water. When there’s not enough oxygen in the water, the aerobic bacteria can’t work anymore, causing the anaerobic bacteria to take place and cause toxic gases such as Methane, Hydrogen Sulphide and Ammonia. These gases cause smells and color change and toxic, and cause the water to turn dark and smelly.

Polluted Water

Clean Water

We can prevent water pollution by not letting the grease enter the water. Simply avoid pouring oil or fats directly into the washing sink. Then, install a grease trap and connect it to the food waste disposer. This way, all the grease goes to the grease trap and floats on the surface. Then, it can be scooped and thrown away like normal garbage. What’s left are the organic matters which can be decomposed by natural aerobic bacteria.