Similar to homes and workplaces, ships also have grease traps. The primary purpose of these grease traps is to prevent oil from kitchen and sink drains from directly entering the separation system. When water mixed with oil flows, it first enters a tank known as the grease trap. Since oil has a lower density than water, it accumulates at the top of the tank over time. The remaining water at the bottom is then directed to the separation system or a separate tank. This way, unwanted oil and debris are trapped in the upper part of the tank.
Why Grease Traps Are Necessary on Ships and Yachts
In ships and yachts, we consume water for various purposes. Later, we can treat this wastewater and discharge it into the sea through water treatment systems. But why do we need a grease trap in this process? To answer that, let’s delve into some information about water treatment systems.
Water treatment systems generally filter and purify usage water through various stages, either by physical filtration or by using microorganisms to facilitate reactions. By doing so, we minimize the harm to marine life when discharging water into the sea. However, if oily water continuously enters the system, filters and circuits can become clogged, disrupting the proper functioning of the system. Therefore, grease trap usage is crucial, especially on ships and yachts.
How to Clean a Grease Trap
What happens if a grease trap tank isn’t cleaned for an extended period? In kitchen and bathroom sinks, water drains more slowly, and eventually, complete blockages occur. The reason behind this is that the grease trap tank becomes completely filled with oil and debris.
To clean the grease trap tank:
- Close the inlet valve of the tank.
- Open the manhole located on the top.
- If the tank is too full and there’s a risk of overflow, partially drain the water from the bottom using the drain valve.
- Remove the oily portions using a vacuum pump or a container.
- Once the tank is cleaned, close the manhole and reopen the inlet valve.
Keep in mind that cleaning grease trap tanks can be unpleasant due to their strong odor. Wearing a mask is advisable during this process
