R&O specialises in wastewater treatment : from pretreatment to discharge and sludge treatment.


A major player on the scene
for 35 years, R&O Dépollution designs, installs and maintains
innovative and tried-and-tested equipment..

Creator of Aeroflo®, R&O today offers a wide range of equipment for urban and industrial wastewater treatment plants,
with a constant focus
on quality and reliability.

Its achievements and its network of partners worldwide reflect the reactivity of its teams at your service.
NEWS R&O Dépollution moved on 03/04/2017 to Bois d'Arcy. You can now contact us on (+33) (0)1 72 87 99 71 Fax (+33) (0)1 72 87 99 81
R&O is ISO 9001-certified since 2003, and ISO 9001 version 2008-certified since 2009.logo Dekra
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Grease removal
The grease removal from raw effluent as a pretreatment is essential to protect the following biological treatment. R&O offers several solutions: AEROFLO®, a patented grease removal pump placed in the grease removal system, a full stainless steel grease removal tank, or for industrial effluents, the FLOTTAFLO®®, a dissolved air flotation unit including physical and chemical treatment.
Lamella clarifier :
R&O offers a wide range of lamella clarifiers suited to a wide range of flow rates and concentrations to separate suspended solids from water either as primary treatment or clarification.
Equipment for biological treatment processes
This step involves the treatment of pollution in the effluent using bacteria. R&O offers different kinds of equipment: Biodiscs (or RBC), AEROXYDE® aeration turbines for small tanks or air diffusers.
Sludge treatment :
R&O offers different types of equipment: FLOTTAFLO® screw system for the transfer of dewatered sludge, soleReO a solar drying process which can achieve up to 80% dryness and can be installed as a standalone unit or combined with an aerobic digester ATAD THERMAERTM
Sand & grit treatment :
Sand and grit removed by the sand separator must be treated to separate water as well as organic matter from the minerals. To do so, R&O offers sand classifiers, sand washers as well as integrated compact solutions. Screened waste : R&O offers screw conveyors and hydraulic compactors, or screw compactors to reduce disposal costs and get waste accepted at treatment centres.
Screening/Sieving
The screening and sieving step is used to protect the following processes from the settling of bulky waste. R&O offers and/or installs various solutions which include vertical screens, screw screens, high throughput screens as well as internally- or externally-fed rotary sieves.
Screened waste :
R&O offers screw conveyors and hydraulic compactors, or screw compactors to reduce disposal costs and get waste accepted at treatment centres