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Fuji Clean Fuji Clean USA, LLC

Description of Technology

Descriptions for proprietary technologies are from the Massachusetts DEP Approval Letters for the technology.

Fuji Clean USA, models CE5, CE7, CE10

The System is a Secondary Treatment Unit (STU) that includes a circuitous flow train through a primary sedimentation chamber, anaerobic treatment chamber, and aerobic contact/ filtration chamber all within the treatment tank.

Wastewater flows into the sedimentation chamber (Chamber 1) where the solids and greases are separated from the wastewater by gravity. The effluent flows into the Anaearobic Contact Filtration Chamber (Chamber 2) where spherical-skeleton filter media aid fixed film and suspended-growth anaerobic micro-organisms to decompose organic matter. The wastewater then flows into the Aerobic Contact Filtration Chamber (Chamber 3) where waved board media and cylindrical hollow mesh media provide a large surface area for fixed-film aerobic bacteria growth and digestion of organic matter as well as filtration of the wastewater. Chamber 3 also provides for settling of sludge prior to discharge. Two air-lift pumps, each powered by a single linear diaphragm blower, provide air to the aerobic chamber as well as flow recirculation and equalization. Sludge generated in Chamber 3 is recirculated to the Sedimentation Chamber and discharge of treated wastewater is through an overflow effluent weir or controlled by the Effluent Air Lift Pump.

Fuji Clean USA, models CEN5, CEN7, CEN10 (nitrogen reducing):

Wastewater flows into the sedimentation chamber (Chamber 1) where the solids and greases are separated from the wastewater by gravity. The effluent flows into the Anaerobic Contact Filtration Chamber (Chamber 2) where spherical-skeleton filter media aid fixed film and suspended-growth anaerobic micro-organisms to decompose organic matter. The wastewater then flows into the Aerobic Contact Filtration Chamber (Chamber 3) where waved board media and cylindrical hollow mesh media provide a large surface area for fixed-film aerobic bacteria growth and digestion of organic matter as well as filtration of the wastewater. Chamber 3 also provides for settling of sludge prior to discharge. Two air-lift pumps, each powered by a single linear diaphragm blower, provide air to the aerobic chamber as well as flow recirculation and equalization. Sludge generated in Chamber 3 is recirculated to the Sedimentation Chamber and discharge of treated wastewater is through an overflow effluent weir or controlled by the Effluent Air Lift Pump.

The System uses an aerobic-anaerobic recirculation process to biodegrade nitrogen. The first step in the process is decomposition of protein and amino acids by anaerobic hydrolysis, forming ammonia nitrogen, which occurs in the anaerobic chamber (Chamber 2). The second step (biological nitrification) is oxidation of ammonia nitrogen to form nitrite and then nitrate ions, which occurs in the oxygen-enriched aerobic nitrite/ nitrate ion-rich water back to the Chamber 1 and subsequently Chamber 2, where the anaerobic bacteria reduce the nitrate ions to nitrogen gas. The recirculation rate is optimized for nitrogen removal by adjusting the airlift recirculation pump rate.

Massachusetts Technology Approvals

Approval Type General Remedial Provisional Pilot
Secondary Treatment
Nitrogen Removal Credit
Phosphorus Removal Credit

Please check the Title 5 Innovative/Alternative Technology Approval Letters webpage at Massachusetts DEP for the most up-to-date information.

Manufacturer

Fuji Clean USA, LLC
41-2 Greenwood Road
Brunswick, Maine 04011 United States
P: 207-406-2927
W: http://www.fujicleanusa.com/

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