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FRP septic tank manufactured by continuous filament winding process


FRP septic tanks are a kind of FRP storage tanks specially designed for domestic sewage treatment. Manufactured by filament winding process with fiberglass as reinforcing agents and resin as binder, FRP septic tanks are a kind of composite products that have been actively promoted worldwide.

Featured by lightweight, high strength, corrosion resistance and mirror-like finish, all these benefits make its performance far beyond that of similar products made of ceramic, hard plastic, steel, etc.

Compared with traditional septic tanks, FRP septic tanks are durable and not easy to leak. For more information, please refer to FRP Septic Tanks VS Traditional Septic Tanks.

  • Cost saving. FRP septic tanks are manufactured in a factory, mechanized, batched and integrated manner.
  • Labor and time saving. FRP septic tanks are manufactured in an integral structure. Compared with concrete septic tanks, it requires no manual brickwork. All you need to do is to excavate a pit of the right size for installation, thus reducing the installation workload and time.
  • Land saving. FRP septic tanks saves land excavation area.
  • High efficiency. FRP septic tanks have good sealing performance and can process manure efficiently and offer more than 2 times of anaerobic decay effect than traditional septic tank.
  • Eco-friendly. FRP septic tanks are manufactured in an integral structure. As a result, it has good sealing performance and is free from leakage, surface water pollution, and does not corrode flowers, trees, electric wires and cables around the septic tank. High level siphon adsorption and drainage is adopted inside the FRP septic tanks to achieve multiple times of sediments and purification.
  • Durable: FRP septic tanks are made of new composite material fiberglass with excellent resistance to aging, acid and alkali and a long service life of up to 50 years.
  • High pressure and compressive strength resistance. International 50 steel resin seal elements are adopted for FRP septic tank sealing. In addition, all seal elements are made in cylindrical shape, which makes it offer higher pressure and compressive strength resistance than seal elements made in polygon and square.
  • Little late maintenance and long sludge cleaning period. FRP septic tanks are buried underground, no power, late maintenance and management are required.
Working Principle
Working Principle
  • The working principle diagram of FRP septic tanks

    FRP septic tank working principle

The work flow of FRP septic tank is generally divided into 4 stages: filtration and sedimentation, anaerobic fermentation, solids decomposition and manure discharge.

The sewage is firstly discharged from the water inlet to the one-stage anaerobic chamber, where the solids and insect eggs with higher specific gravity are deposited and the preliminary fermentation and decomposition begins. The sewage after the first chamber treatment is divided into 3 layers: the paste manure cover, clarified manure fluid and solid manure slag. The manure liquid after the preliminary decomposition flows into the two-stage anaerobic chamber, while the manure cover floating above the manure fluid and the manure slag deposited are retained in the first chamber for further fermentation. In the second chamber, the manure continues to ferment and decompose, and inset eggs continue to sink, and pathogens gradually die. As a result, the manure goes through further harmless treatment, and the thickness of manure covers and slags produced is significantly reduced compared with the first chamber. The manure flowing into the third chamber has generally been decomposed, in which the pathogens and insect eggs have been basically killed. Therefore, the third chamber is mainly used to temporarily store the basically harmless manure liquid.

Solid sludge in the FRP septic tanks shall be removed promptly to avoid sludge clogging the pipes.

Specification of FRP Septic Tanks
Model Volume Length Width Height Thickness No. of Users Per Tank
(m3) (mm) (mm) (mm) (mm)
FRPST-001 1 1270 1000 1000 4 3–5
FRPST-002 2 1760 1200 1200 5 7–10
FRPST-003 3 2650 1200 1200 5 13–15
FRPST-004 4 2000 1600 1600 6 16–25
FRPST-005 5 2500 1600 1600 6 24–31
FRPST-006 6 2400 1800 1800 6 30–45
FRPST-008 8 3150 1800 1800 7 38–49
FRPST-009 9 3530 1800 1800 7 50–70
FRPST-010 10 3930 1800 1800 7 75–82
FRPST-016 16 3940 2200 2200 8 100–200
FRPST-020 20 4400 2400 2400 8.5 130–150
FRPST-025 25 5500 2400 2400 8.5 160–180
FRPST-030 30 6600 2400 2400 8.5 280–300
FRPST-040 40 8800 2400 2400 9 380–400
FRPST-050 50 8130 2800 2800 12 480–500
FRPST-060 60 8500 3000 3000 13 550–600
FRPST-075 75 10600 3000 3000 13 700–750
FRPST-100 100 10500 3500 3500 13 980–1000

FRP septic tanks are a supporting facility for the preliminary treatment of domestic sewage in residential buildings, office buildings, schools, nursing homes, workshops, rural living areas, etc.

  • FRP septic tanks for office building sewage treatment

    For office building sewage treatment

  • FRP septic tanks for school sewage treatment

    For school sewage treatment

  • FRP septic tanks for residential building sewage treatment

    For residential building sewage treatment

  • FRP septic tanks for nursing home sewage treatment

    For nursing home sewage treatment


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Mark Vilton - Villo Ceo

Mark Vilton - Villo Ceo

15 Years Of Experince



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