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Waste Water

AF3 Tank

AFFF Wastewater Holding Tanks

Aqueous film-forming foam (AFFF) solution is used extensively in fire suppression systems for aviation facilities and fire training facilities. AFFF systems are proven and essential to protect these valuable, mission essential aircraft and hangar facilities. AFFF systems have superior fire extinguishing capability and can effectively control flammable or combustible liquid fire resulting from aviation and shipboard accidents.

The ParkUSA AFFF unit is a product designed to hold and ease application of AFFF solution. Due to its capabilities in fire suppression, the use of this tank is useful for fire protection projects.

AFFF is not considered hazardous to humans and is technically considered biodegradable and practically nontoxic. The major concern is the large volume of solution that can be produced from hangar fire protection systems. Because AFFF is biodegradable, the breakdown of AFFF by bacteria consumes oxygen. Uncontrolled AFFF discharged to the environment could deprive aquatic life of oxygen and cause fish kills. If allowed to enter the sewage treatment facilities in relatively large volumes, AFFF foam can disrupt the treatment process by killing necessary bacterial cultures within wastewater treatment facilities (WWTFs). Many WWTF’s prohibit the discharge of AFFF laden wastewater unless the AFFF concentration is less than 50 ppm.

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There are currently three models available for the ParkUSA AFFF unit, these configurations are given by the material of construction:

ParkUSA AFFF-C Series 

It is manufactured of Class II 4500 PSI precast concrete. Precasting the concrete shell insures that all units achieve structural and physical uniformity. The units are structurally engineered for H-20 truck loading and can be buried without any need for any other structural protection. The unit is of monolithic construction at bottom and walls to insure against joint leakage.

ParkUSA AFFF-C Series 

It is of ¼” thick ASTM A36 carbon steel. All welding is performed in accordance to American Welding Society D1.1 standards. The inlet, outlet, vent, and drain connections shall be standard duty Class 150 PSI. Interceptor shall have lifting lugs, gasketed access covers, site glass, makeup water valve port, and support beams. The unit shall be coated inside and outside with a fire retardant and corrosion resistant coating system. The coalescing media pack is of modular construction for easy maintenance and constructed of noncorrosive materials.

ParkUSA AFFF-C Series 

It is manufactured fiberglass or plastic and is used where lightweight construction is required.

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