Harlequin CAP 6 Continuous Aeration Plant

Harlequin CAP 6 Continuous Aeration Plant
Diameter: 1660 mm
Height to ground level: 2380 mm

Weight: 275 kg

Population serve: 1-6 people
Desludging Interval 12 months

Delivery: £175 to mainland UK.  Terms and conditions apply.  Please call for a shipping quote if the delivery is in the Highlands or Islands of Scotland.   We deliver tanks direct to site.


Options Total: £ 0

Factory Fit Accessories

Treatment Plant Alarm (£95.00)
Pumped Outlets (£370.00)
Sample chamber c/w Flange & Lid (£215.00)
Extension Neck (£35.00)


Harlequin CAP6 Continuous Aeration Plant

The CAP6 Continuous Aeration Plant is ideal for the domestic market, is a perfect solution for homes of up to 6 inhabitants (4 bedrooms).

The CAP6 uses a bio-media systems and delivers a pollutant removal level of 96.2%, combating common problems associated with small packaged domestic plants such as media blockage and inadequate oxygen supply.

The CAP6 model can easily be installed using a 2.5-tonne mini digger resulting in simple, cost effective installation with minimal damage to the surrounding area.

The model has a quiet running compressor housed under the flat lid, therefore the operational use is virtually silent. It also dramatically reduces long term operating costs as, the only component that requires maintenance is the compressor.

The system is odourless as the waste is purified with micro-organisms during the treatment process, and is therefore an acceptable addition to the garden, or anywhere where it is housed near to the required working area.

CAP6 Continuous Aeration Plant Features:

    • UK Manufactured in high quality MDPE
    • Population served: 1-6
    • Organic load: 320g BODs/day
    • Pollutant Removal of 96%
    • Desludging: every 12 months
    • Nominal hydraulic load 900 litres/day
    • Total capacity 3,800 litres
    • Energy used 0.8kWh/day

These sewage treatment plants replace the septic tanks as the septic tanks are no longer legal.

Warranty: 2 years

Shipping: £175 to Mainland UK. Terms and conditions apply

Lead Times: This sewage treatment plant is in stock, so the lead time is the transportation time.


Message from happy customer: “Tremendous customer service from Stephan.”

Additional information

Weight 275 kg
Dimensions 1660 × 1600 × 2380 cm


Tank Size

3,150 – 4,000 Litres

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