STBF series sewage treatment plant is compact type tank. It is made from LLDPE (Low Linear Density polyethylene) material with spherical shape. The material and shape offers robust construction against earth pressure.

STBF series STP for domestic and commercial applications such as individual houses, Low rise apartments, Villas, Bungalows, Row houses, Dhabas, Restaurants, Canteens, Offices, Small factory etc., These tanks available with the capacity range from 10000 to 150000 liters.

Operations Principle

Solid Separation Zone:
First stage transforms the influent solids to settled solids while allowing scum to float on the surface. It is a septic zone in which settled sludge is stabilized by anaerobic digestion. The treatment efficiency of the chamber is in the range of 30 - 40 % BOD removal.

Aeration Zone:
Second stage is the aerobic zone in which the air bubbles pass through plastic media installed inside the tank which in turn increases the surface area and retain micro-organism long enough to digest the organic substance remained. Air is provided through blowers and more contacting time with the slime on the plastic media, occurred, more efficient the digestion process would be. BOD removal is around 60- 70%.

Features :

• Manufactured in collaboration with M/s Aqua Nishihara corporation, Japan
• Rust/Corrosion proof, leak proof, not prone to cracking
• 100% Eco-friendly
• Less weight, require less area and easy to install
• Consistent efficiency and 90-95% BOD reduction throughout the year
• Sludge drying bed is not required
• Very low electrical consumption required around 17W-100W for blower.
• Recycled sewage water can be used for irrigation
• Non-filling septic tank and can be relocated anywhere at any time
• Durable and maintenance free tank
• Manual cleaning is not required
• Impermeable to roots of trees

NBF series sewage treatment plant is compact type tank. Anaerobic septic tanks are made from FRP (Fibre-reinforced plastic) material with Horizontal cylindrical shape. The material and shape offers robust construction against earth pressure.

NBF series for medium and large applications like High rise residential apartments, Commercial complexes, Super mall, Hospitals, Hostels, Universities, Schools, Large office buildings, Factories, Institutions etc,.

Operations Principle

Solid Separation Zone (Anarobic Zone)
First Stage transforms the influent solids to settled solids while allowing scum to float on the surface. It is a primary sedimentation zone in which settled sludge is stabilized by anaerobic digestion. The Treatment efficiency of the chamber is in the range of 30% BOD removal.

Aeration Zone (Aerobic Zone)
Second stage is the aerobic zone along with plastic media inside the tank which in turn increases the surface area and retains micro-organism long enough to digest the organic substance. Clear water overflows to the next treatment chamber. Air is provided through blowers and higher contact time with the Bo-film on the plastic media facilities efficient digestion. BOD removal is around 60%.

Final Sedimentation Zone
Final Stage involves sedimentation where organic wastes are settles in the sedimentation zone. The settled waste in the bottom is pumped back to the solid separation zone as a return sludge having active biomass (MLSS) to increase the efficiency of the system. The output form this zone is effluent that meets the stipulated PCB’s standards.