Recovery, transfer, screening and washing
Treatment unit: sewers and sand washing
Treatment unit for sewers and sand washing
This equipment is used for solids/liquid separation in the preatreament phase of the sewage
collected by «sludge gulper» trucks during sewers network cleaning campaign and is fully
automated.
ADVANTAGES
- Effluent taken by grab
- Sewage regulated feed line
- Screening by 10 mm
- Sand washing < 5% OM (organic matters)
- Sieving of washing water
- Minimum maintenance
- Material : stainless steel 304l or 316L
Receipt of network cleaning products – Pickup by grab
OPERATING PRINCIPLE
The treatment unit is composed of several equipment for the separation and washing phases.
Hydrocleaning trucks dump their loads into a concrete pit.
Effluent is then picked up by a grab or a screw conveyor. Washed bulky waste (>10mm) is evacuated
directly into a tank or by a belt conveyor.
The thin matter (OM+Sand) is taken up from the Trommel by a pump with the washing water and
transferred to the sand washer.
The sand washer separates and extracts the organic matter from the sand. The sand is squeezed out and
removed by a transfer screw.
The wash water, loaded with thin organic particles, can be sieved before being discharged into the
conventional wastewater treatment network.
This equipment is matched to each other according to the required treatment rate.
