High Treated-Water Quality Through Fine Filtration with the OKO-sf Gravel Filter
The OKO-sf gravel filter is used where high treated-water quality is required, particularly with regard to filterable solids. Fine particles suspended in the wastewater are retained by a multi-layer filter bed consisting of gravel and sand.
Depending on the loading of the OKO-sf, the filter is automatically backwashed based on pressure and/or time. To ensure uninterrupted wastewater treatment, two OKO-sf units are generally used. While one filter is treating the wastewater, the second unit remains on standby and takes over filtration when the first unit is being backwashed.
Safety valve
Pressure monitoring
Nozzle plate bottom
for optimum flow
distribution in the
filter bed
Filter bed with layers
made of gravel and sand
Benefits
- High filtration capacity
- lowest levels of filterable solids in the clear water
- high-quality steel tank with internal rubber coating to prevent corrosion
- automated backwashing process
