Which type of interceptor/separator is explicitly prohibited?

The prohibition of a water-cooled interceptor is primarily due to potential safety concerns and operational inefficiencies. Water-cooled interceptors rely on chilled water to manage the temperature of the substances being treated, which can lead to complications in maintaining optimal separation of unwanted materials. By introducing water into the system, these interceptors may inadvertently increase the risk of sludge formation and bacterial growth, thereby creating an unhealthy environment.

In addition, water-cooled interceptors could potentially introduce unforeseen complications regarding local wastewater treatment regulations. Many jurisdictions enforce strict standards for wastewater treatment processes to ensure environmental compliance, and the introduction of this type of interceptor may violate those regulations.

On the other hand, grease separators and oil interceptors serve specific and important functions in mitigating the contamination of sewage systems with fats, oils, and greases. They are designed to separate these substances effectively without the complexities that a water-cooled interceptor introduces. The design intent for grease separators and oil interceptors adheres to best practices, while the water-cooled design does not align with these principles, tying additional regulatory scrutiny and safety concerns into the rationale for its prohibition.