Potato Processing Plant

A renowned American snack food producer with production facilities all over the world opened a potato processing site in Kashira in 2002. Biothane was awarded the contract for treating the wastewater from the production lines of potato crisps. The treatment plant, consisting of three stages: pretreatment, anaerobic treatment and aerobic post treatment, prepares the wastewater for the requirements to discharging in into the ciyty sewer.

The wastewater treatment plant was extended twice after installation due to increased production from two added production lines.

Pretreatment realizes efficient suspended solids and FOG (fat, oil & grease) removal.

After pretreatment the wastewater is collected in a buffer tank. In the next step, the conditioning element of the treatment, the wastewater is made ready for the anaerobic process by nutrient addition and pH and temperature regulation. The anaerobic process takes place in three Biothane® UASB reactors, with a design COD removal efficiency of 80%. A package scrubber removes H₂S from the produced biogas. The biogas is thus re-used in a boiler or burned in a flare.

In the aerobic post treatment step consisting of a final clarifier and a DAF (Dissolved Air Flotation) unit, effluent polishing and N/P removal takes place.