OneAdvanced

OneAdvanced

A flexible, high-capacity system designed for larger or more complex projects.
  • Modular design – scales up to 1000 PE for commercial sites and demanding applications.
  • Advanced control panel – supports a wide range of add-ons to meet strict discharge limits.
  • High treatment performance – engineered to achieve excellent effluent quality with the right modules.
  • Energy-efficient operation – starts from just 0.95 kWh per day, helping reduce long-term running costs.
  • Customisable to site needs – adaptable configuration for projects requiring tighter environmental compliance.
  • Built for reliability – a robust system trusted on commercial and high-duty installations across the UK.
OneAdvanced delivers scalable performance, low energy use, and modular flexibility ideal for developments that need serious treatment capacity without compromising on efficiency or compliance.
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Innovative Design Features

Flush-to-Ground Lid

The system’s lid is designed to be flush with the ground. Helping to preserve the look of your garden and eliminating any unsightly protrusions.

Vehicle Loading Lid

This unique feature allows for installation in limited spaces, such as driveways, without compromising space or appearance.

Integrated Sampling Chamber

The built-in sampling chamber streamlines your quality assurance process, saving you time and money by eliminating the need for additional installations.

Gravel Backfill

This installation method suits various ground conditions and is cost-effective, saving you significant installation costs compared to traditional methods.

No Moving Parts

The simplicity of design with no moving parts or electrical components inside the tank makes maintenance easy and efficient. All servicing can be handled via an external control panel and compressor, ensuring a hassle-free experience.

Optional Raised Outlet

This option saves you time, money, and future headaches. Install your drainage field closer to the surface, reducing excavation costs. As a result you can enjoy improved flow and fewer blockages, while potentially eliminating the need for a pumped outlet.

Sizing

Population equivalent (PE) Max. daily flow [l/d] Max. organic load [kg BOD5/d] Total volume [l] Length [mm] Width [mm] Height [mm] Weight [kg] Product code
10 1500 0.60 4800 2280 1985 2100 G50138
14 2100 0.84 6500 2390 2190 2390 G50142
22 3300 1.68 9600 5160 1985 2250-2450 G50024
28 4200 1.92 13000 5380 2190 2530-2730 G50026
35 5250 2.10 17000 15500 2040 2515-2715 G50028
40 6000 2.40 20000 15500 2240 2715-2915 G50030
50 7500 3.00 26000 11360 2190 2850-3050 G50032
60 9000 3.60 26000 11360 2190 2850-3050 G50034
75 11250 4.50 32000 9900 2500 3300-3500 G50036
100 15000 6.00 44000 12900 2500 3300-3500 G50040
125 18750 7.50 52000 15000 2500 3300-3500 G50280
150 22500 9.00 64000 17700 2500 3300-3500 G50042
175 26250 10.50 76000 20450 2500 3300-3500 G50282
200 30000 12.00 88000 26400 2500 3300-3500 G50044
220 33000 13.20 88000 23480 2500 3300-3500 G50284
250 37500 15.00 116000 13300 8700 3300-3500 G50046
275 41250 16.50 100000 13400 3440 3300-3500 G50286
300 45000 18.00 116000 13300 8700 3300-3500 G50048
350 52500 21.00 142000 19900 5600 3300-3500 G50050
400 60000 24.00 140000 18040 7200 3300-3500 G50052
450/500 75000 30.00 170000 25130 6200 3300-3500 G50054
550/600 90000 36.00 206000 16200 11800 3300-3500 G50056
650/700 105000 42.00 216000 27500 5600 3300-3500 G50058
750/800 120000 48.00 272000 26200 8700 3300-3500 G50060
850/900 135000 54.00 324000 29100 8700 3300-3500 G50062
950/1000 150000 60.00 348000 30500 8700 3300-3500 G50064

How it works

1. Charging phase

The wastewater goes first into primary treatment (1st chamber), where the solid substances are retained. From there, the wastewater is fed into the SBR tank (2nd chamber).

2. Aeration phase

The actual biological cleaning by microorganisms now takes place in the SBR tank. Short aeration and rest phases alternate in a controlled cleaning process. The so-called activated sludge can now develop with millions of microorganisms and clean the water thoroughly.

3. Settling phase

A settling phase now follows, during which the live sludge sinks to the bottom of the system. This allows a clarified water zone to form at the top of the SBR tank.

4. Clear water extraction phase

The purified wastewater is now fed into a discharge system (stream, river, sea) or into an infiltration system. Afterwards, the sludge is fed back from the SBR tank into the first chamber.

Treatment performance

Biological Oxygen Demand (BOD) Suspended Solids (SS) Ammonia (NH₄-N) Phosphate (Ptot) Nitrate (Ntot)
12mg/l (95.9%) 20mg/l (94.4%) 12mg/ (65.6%) 3.8mg/l (53.5%) 21.1mg/l (62.0%)
Testing was carried out under PIA, testing number: PIA2011-141B15e Treatment efficiency and performance may vary depending on influent samples coming into tank.

Why choose the OneAdvanced?

Scale your system with confidence

Built for larger or more complex projects, OneAdvanced scales all the way up to 1000 PE, giving you a flexible system that grows with your site without needing a full redesign.

Meet the strictest discharge limits

With a powerful control panel and a range of performance add-ons, OneAdvanced can be configured to achieve exceptional treatment quality for sites with tighter environmental requirements.

Reduce long-term running costs

Despite its size, OneAdvanced starts from just 0.95 kWh/day, offering impressively low energy use that keeps operational costs down over the lifetime of the system.

Case Studies

Sewage treatment system for National Trust Scotland

Sewage Treatment System for National Trust Scotland
wastewater treatment system for verdant leisure

New Wastewater Treatment System River Tay Leisure Park
Dalwhinnie Distillery wastewater treatment plant

Dalwhinnie Distillery, Dalwhinnie
Loch Leven wastewater treatment system

Loch Leven’s Larder, South Perthshire

Warranty

*1 year warranty following commissioning & 2 additional years if serviced annually.

Downloads

  • GRAF-Treatment-Plant-Guide-for-Optimal-System-Operation.pdf Download
  • OneAdvanced-Specification-Sheet-1.pdf Download
  • 10PE-OneAdvanced_STANDARD_DETAIL_CARAT_4800L.pdf Download
  • 14PE-OneAdvanced_STANDARD_DETAIL_CARAT_6500L.pdf Download
  • 22PE-OneAdvanced_STANDARD_DETAIL_CARAT_2x4800L.pdf Download
  • 28PE-OneAdvanced_STANDARD_DETAIL_CARAT_2x6500L.pdf Download
  • 35PE-OneAdvanced_STANDARD_DETAIL_CARAT_XL_2x8500L.pdf Download
  • 40PE-OneAdvanced_STANDARD_DETAIL_CARAT_XL_2x10000L.pdf Download
  • 50PE-OneAdvanced_STANDARD_DETAIL_CARAT_XL_4x6500L.pdf Download
  • 60PE-OneAdvanced_STANDARD-DETAIL_CARAT_S_4x6500L.pdf Download
  • 60PE-OneAdvanced_STANDARD-DETAIL_CARAT_XL_2x13000L.pdf Download