FujiClean STP Treatment Technology

The FujiClean Sewage Treatment Plant (STP) is based on advanced Japanese Johkasou technology, utilizing a highly efficient fixed film (attached growth) biological treatment process. Within the system, specially designed fixed media provide a large surface area for beneficial microorganisms to grow and form a stable biofilm. As wastewater flows through these media, organic pollutants such as BOD, COD, and suspended solids are effectively broken down.

The treatment process is carried out through a combination of anaerobic and aerobic stages, ensuring thorough and consistent purification. In the anaerobic zone, organic matter is initially decomposed, while the aerobic zone, supported by an energy-efficient air diffusion system, further enhances treatment through oxidation and nitrification. A final sedimentation stage ensures proper sludge separation, delivering clear and treated effluent.

Unlike conventional systems such as moving bed reactors, FujiClean’s fixed bed technology offers greater process stability, lower energy consumption, and minimal maintenance requirements. This makes it an ideal solution for residential, commercial, and small-scale applications where reliability, efficiency, and compact design are essential.

Treatment process inside the Sewage Treatment Plant (STP)

FujiClean is the worldwide leader in advanced on-site wastewater treatment engineering smart and reliable treatment systems with best in-class recognition in multiple markets for pollutant and nitrogen removal. Three control valves are used for easy maintenance and for sight specific process adjustment, if necessary. the system uses a combination of integrated fixed media and activated sludge to process and treat wastewater.

Incoming wastewater is received directly into the first of three major chambers. the sedimentation chamber, in this chamber contaminated water mixes with recirculated treated water to weaken its concentration solids settle to the bottom, while oil and grease float to the top and a conditioned influent free of solids and scum leaves this chamber through outlet in the first chamber partition wall. the conditioned influent is directed downward through the baffle to the bottom of the second chamber. the anaerobic contact chamber, it then flows up through basket type plastic media hosting millions of bacteria colonies. here organic matter is decomposed or captured by living microorganisms and nitrate ions are reduced to harmless gas. the process water then moves through the opening the openings on either side of the second chamber partition wall to the oxygen rich third chamber.

The aeration contact chamber, this chamber consists of two sections each on opposite walls, which are fed oxygen by a very efficient linear diaphragm blower. this oxygen feed aerobic microbes living on proprietary board and hollow mesh plastic media, where they consume organic material to form carbon dioxide water, nitrite and nitrate ions. the blower also provides air to recirculate treated water four to six times per day, air lifting water and solids from the bottom of the third chamber back to the first chamber. recirculation also moves nitrified ions to the second chamber for further reduction into safe nitrogen gas. a clarification zone in the center section of the final chamber uses gravity to remove any remaining solids. before using a controlled process to airlift clean effluent to the final disinfection and gravity discharge zone. this effluent airlift mechanism also provides in tank equalization as process water rises and falls in a controlled manner during treatment.