Double-tank FRP Septic Tank

Double-tank FRP Septic Tank

The Jinyang double-tank FRP (Fiberglass Reinforced Plastic) septic tank uses two connected underground vessels to provide extended sewage retention and improved treatment. By splitting the treatment process across two tanks, it achieves better settling, longer digestion, and higher-quality effluent for larger homes and sites with higher wastewater flow.

How It Works

Wastewater flows into the first tank, where heavy solids settle and primary anaerobic digestion begins. Partially clarified liquid then passes to the second tank, where further settling and polishing occur before discharge. The two FRP bodies are joined by a buried connecting pipe and both are sealed against odor and leakage.

Key Features

• Extended treatment - two stages give longer retention and better effluent quality than a single tank.

• Watertight FRP bodies - one-piece vessels resist sewage and soil without leaking.

• Corrosion resistant - FRP outlasts concrete in aggressive sewage and soils.

• Flexible layout - two tanks can be arranged to suit site constraints.

• Easy maintenance - access covers allow periodic sludge pumping without excavation.

• Long service life - designed for decades of buried operation.

Technical Options

Total capacity from 10 m3 to 100 m3, tank sizes and connection layouts tailored to flow. Inlet/outlet sizes, baffles, and traffic-rated covers available.

Typical Applications

Large homes, housing clusters, schools, hotels, and commercial sites needing improved effluent quality and higher capacity.

Why Choose Jinyang

With over 20 years of FRP manufacturing, Hebei Jinyang Environmental Protection Equipment Co., Ltd. designs double-tank septic systems to project needs. Contact Jinyang for sizing and a factory quote.