GRAF One2Clean Sewage Treatment Plant 18PE | G50204

The GRAF One2Clean 18PE is a high-performance, two-tank domestic wastewater treatment system designed for properties with up to 18 residents. This paired unit consits of 2x 6500L tanks. Utilising advanced SBR (Sequencing Batch Reactor) lifting technology, this system achieves up to 99% pollutant removal efficiency, making it one of the most effective solutions on the market for domestic off-mains sewage treatment.

The system is CE Certified and fully compliant with EN12566-3, offering excellent effluent quality that meets and exceeds regulatory standards. It’s also nutrient neutrality-friendly, ideal for sensitive discharge areas. With low energy consumption (just 46 kWh per person annually) and reduced sludge production, the One2Clean provides an efficient and cost-effective long-term investment for homeowners.

No specialist wiring is needed on-site, and the unit is suitable for dry ground installations using granular base and backfill. An integrated sample chamber and user-friendly controls ensure easy maintenance and monitoring.

Key Benefits:

• Strong, injection-moulded construction (15-year tank warranty)

• 2-year technology warranty

• Quiet operation

• Built-in, self-cleaning sampling point

• Plug-and-play installation – no onsite wiring required

• Ultra-low power usage – just 46 kWh per person, per year

• Stable for groundwater levels up to the tank’s midline

• Compact control panel for indoor or optional outdoor kiosk

Specification Value

Model G50204

Population Capacity Up to 15 People

Dimensions (L x W x H) 3520 x 2240 x 2575 mm

Inlet/Outlet Diameter DN100 / 110

Weight (Empty) 455 kg

Inlet Invert 630–830 mm

Outlet Invert 630–830 mm

Air Compressor Power 58 Watts

Compressor Noise 36 dBA

BOD 7 mg/l

Suspended Solids 14 mg/l

Ammonium (NH4-N) 0.5 mg/l

Graf One2Clean 18PE Drawing

Graf One2Clean Installation Guide

Graf UK Brochure

Ebara Optima Pump Specification

Graf One2Clean PIA Certificate

Graf One2Clean IPS Pumped Option Information

Free Commissioning

Graf One2Clean Log Book

PLEASE CONTACT US FOR AN ACCURATE LEAD TIME

sales@direct-drainage.co.uk