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Residential - CEN Models

NSF 40/245 Wastewater Treatment

Model CEN5

Designed to treat up to 500 gallons per day of domestic strength wastewater, the one-tank CEN5 is the most compact of the company's enhanced nitrogen removal systems, specifically designed for use in nutrient sensitive areas. With the smallest footprint of any comparable system, the unit is certified to NSF/ANSI 40/245 standards and has demonstrated best-in-class nitrogen removal performance in multiple-state field testing protocols.

Model CEN7

Designed to treat up to 700 gallons per day of domestic strength wastewater, the one-tank CEN7 model is the company's mid-size residential system for enhanced nitrogen removal in nutrient sensitive areas. Certified to NSF/ANSI 40/245 standards, this exceptionally small footprint system has demonstrated best-in-class nitrogen removal performance in multiple-state field testing protocols.

Model CEN10

Designed to treat up to 1,000 gallons per day of domestic strength wastewater, the one-tank CEN10 model is the company's larger size residential system for enhanced nitrogen removal in nutrient sensitive areas. Certified to NSF/ANSI 40/245 standards, this exceptionally small footprint system has demonstrated best-in-class nitrogen removal performance in multiple-state field testing protocols.

Model CEN14

Designed to treat up to 1,350 gallons per day of domestic strength wastewater, the one-tank CEN14 model is designed for large residential / small commercial enhanced nitrogen removal in nutrient sensitive areas. Certified to NSF/ANSI 40/245 standards, this exceptionally small footprint system has demonstrated best-in-class nitrogen removal performance in multiple-state field testing protocols.

Commercial - CEN Models

NSF 40/245 Wastewater Treatment

Model CE21

Designed to treat up to 1,900 gallons per day of domestic strength wastewater, the one-tank CEN21 model is designed for commercial enhanced nitrogen removal in nutrient sensitive areas. Certified to NSF/ANSI 40/245 standards, this exceptionally small footprint system has demonstrated best-in-class nitrogen removal performance in multiple-state field testing protocols.

NSF 40/245 Wastewater Treatment & Nitrogen Removal Products

In an increasing number of environmentally sensitive areas around the U.S. scientists, citizens and lawmakers are focused on trying to reduce wastewater derived nitrogen pollution both to maintain a safe and healthy drinking water supply, and in surface water to minimize toxic algal blooms that can cause myriad problems for marine environments.


With proprietary process water continuous recirculation and exclusive Fuji Clean media specifically designed to facilitate the growth of nitrogen reducing bacteria, field testing in Suffolk County NY, Maryland, Virginia and Florida demonstrate that Fuji Clean CEN model systems deliver highest level nitrogen removal performance.


Lightweight, small footprint, one-tank systems are extremely maneuverable offering an ideal solution for tight, difficult sites. Highly energy efficient, easy to install, and with no moving parts inside tank, exceptionally easy to maintain, Fuji Clean technology is becoming the market leader in a growing number of nitrogen restricted regions.

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