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Treatment Process Overview Fuji Clean's "contact filtration" treatment is a simple, well engineered process that consists of a controlled, circuitous flow train through anaerobic and aerobic chambers and in direct contact with assorted proprietary fixed film medias on which biological digestion of organic matter occurs. Media is also designed and positioned to provide mechanical filtration of process wastewater. The system includes two air lift pumps (see diagram below). The Recirculating Airlift Pump returns process water and sludge from the aerobic zone to the sedimentation chamber, recirculating 2-4 times inflow per day for CE models and 4-6 times inflow for CEN (enhanced denitrification) models. The Effluent Airlift Pump is designed to help equalize flow and discharge treated effluent. Treatment Process Aerobic Sedimentation Anaerobic contact Clarification DisinfectionTreated chamber chamber filtration chamber chamber chamber Recirculation air-lift transfer Chamber 3B. Disinfection Chamber (final zone before discharge — option for chlorination tablet Chamber 3A. Clarification Chamber (settli Sludge Transfer (Recirculating air lift pumpback) - Chamber 1. Sedimentation Chamber (separates solids and greases) Airlift Pumps. This generic illustration shows the mechanics of the "airlift pumps" used in this system, which are simple pipe conduits through which pressurized air (from blower) is introduced at the bottom and by fluid pressure, water is carried up the pipe by ascending bubbles. Two Air Lift Pumps. One Recirculating Air Lift pump sending process water and solids back to Chamber 1, and one Effluent Air Lift Pump for measured discharge of treated effluent. (See airlift pump info below). Outlet Chamber 2. Anaerobic Filtration Chamber (spherical -skeleton filter media) organic matter decomposition by micro-organisms, suspended solids are captured and nitrates are denitrified During treatment, water level fluctuates between high and low water levels Powered by the FujiMAC "RII" Series Blowers State-of-the-art linear f diaphragm air blowers manufactured by Fuji Clean Co sized to provide about 2.8 cubic feet per minute to most Commercial systems. Chamber 3. Aerobic Contact Filtration Chamber (both board and cylindrical hollow mesh media) oxygen rich zone for aerobic microbe digestion activity, solids filtration and nitrification of ammoniac nitrogens to nitrates Overflow Effluent Weir Air 1 Flow Equalization When water level exceeds LWL, treated water is discharged through Chamber 313 via the Effluent Air Lift pump. If water level exceeds HWL, then treated water is also discharged through an overflow effluent weir. 5