EFLO SAF Construction

EFLO SAF Construction

EFLO SAF Plant Setup

EFLO SAF Plant Setup

EFLO SAF Module using concrete tanks

EFLO SAF Module using concrete tanks

Upgrading a failing overloaded existing plant

Upgrading a failing overloaded existing plant

EFLO SAF Benefits

Achieves final effluent of up to 10/10/2 in terms of BOD/TSS/NH4

Very high specific surface area media

Rigid, cross fluted, pvc media

Small foot print, high capacity

Can be installed above or below ground

Prefabricated package plants

Modules for new or existing concrete tanks

Upgrading under-performing plants

Low maintenance & operator input

Low power consumption

Resists sludge bulking

Low sludge production

High Rate Biological Sewage Treatment

EFLO SAF

EFLO SAF is a biological treatment process based on submerged aerated biofilter.

The 'heart' of the system is a structured and rigid pvc media with a very high specific surface area. This allows for high concentrations of attached biomass.

The unique flow patterns within the media ensure high rates of biological oxidation with relatively low retention time. Air bubble retention is prolonged and allows for exceptional oxygen transfer rates.

There are few moving parts within the plant allowing for low maintenance and operator demands.

Effluent results are typically better than 20 : 20 : 5 (mg/l BOD:TSS:NH4) and can be improved further with tertiary treatment.

EfloSAF treatment plants are available as pre fabricated package units or a stainless steel Modules for use within concrete tanks.

EfloSAF plants can be above ground or below.

EfloSAF has been used for new projects, side streams to existing plants to increase capacity and to increase effluent standards of under performing plants, in particular, to meet increased ammonia discharge limits.


EFLO SAF Package with prefabricated steel tanks

EFLO SAF Package Plant Dimensions

Model Population Served BODs Load Daily Flow Power Required Plant Dimension, m Dry Weight
pe kg/day m3/day kW L W H kg
EFLO SAF-100 100 4.2 20 2 1.5 2.4 3.0 1500
EFLO SAF-200 200 8.4 40 3 2.3 2.4 3.0 2500
EFLO SAF-300 300 12.6 60 3 3.4 2.4 3.0 3500
EFLO SAF-400 400 16.8 80 4 4.4 2.4 3.0 4500
EFLO SAF-500 500 21 100 4 5.5 2.4 3.0 5500
EFLO SAF-600 600 25.2 120 5.5 4.0 2.4 3.0 6500
EFLO SAF-800 800 33.6 160 5.5 4.8 2.4 3.0 8500
EFLO SAF-1000 1000 42 200 7.5 6.0 2.4 3.0 10500
EFLO SAF-1200 1200 50.4 240 7.5 7.2 2.4 3.0 12500
EFLO SAF-1500 1500 63 300 11 9.0 2.4 3.0 15500
EFLO SAF-1750 1750 73.5 350 11 10.3 2.4 3.0 18000
EFLO SAF-2000 2000 84 400 15 12.0 2.4 3.0 20500

These EfloSAF models are sized based on the following:

BOD5 load: 60 g/pe/day

TSS: 60 g/pe/day

N-NH4: 7 g/pe/day

Flow: 200 l/pe/day

30% removal of BOD & TSS through septic or primary settling tank