Grease interceptors cannot be made of which type of material?

Grease interceptors are designed to capture and retain grease and fats from wastewater before they enter the municipal sewage system. They must be constructed from materials that are durable, non-corrosive, and able to withstand the harsh conditions typically associated with wastewater.

Polyvinyl chloride (PVC) is not suitable for grease interceptors due to its lower thermal resistance and potential for degradation over time when exposed to heat and certain chemicals often found in grease-laden wastewater. Unlike materials such as polyethylene, steel, and concrete, which possess the required strength and resistance to environmental stresses, PVC can become brittle and may not maintain an effective seal against leaks, leading to potential environmental hazards and operational inefficiency.

Polyethylene is lightweight and resistant to chemicals, making it a common choice. Steel, when properly coated or treated, offers strength and durability. Concrete is robust and can be shaped to various specifications, ensuring effective performance. Hence, the choice of materials for grease interceptors is crucial, making polyvinyl chloride an unsuitable option.