50% particulate BOD reduction and 70% TSS reduction under heavy solids loading conditions
A southern California pepper processor was looking for a better solution than their existing drum and shaker screen for primary clarification and screening of pepper solids in their process flows. Excessive Total Suspended Solids (TSS) loading was straining the capacity of their worm digester and solids greater than 200 micron would overwhelm the digester. Reducing the load sent to the digesters would ease their operations and help ensure that the plant could remain operating at full capacity at all times.
The Hydro MicroScreen™ was tested at four locations to determine where its phenomenal solids reduction abilities would prove most beneficial to the plant. Each source had unique characteristics and flow volumes and the Hydro MicroScreen™ proved beneficial on each of them. Feeds were sent from after the drum screen, after the shaker screen, after the blanch water and a combined flow coming from all of the above processes.
Details on the volume of materials the Hydro MicroScreen™ captured at the various testing points are follows:
After the Drum Screen (23 gpm), produced 0.84 yd3 / hr (58 gpm), produced 0.96 yd3 / hr dewatered solids
After the Shaker Screen (31 gpm), produced 0.53 yd3 / hr dewatered solids
After the Blanch Water (32 gpm), produced 1.6 yd3 / hr dewatered solids
Combined Materials from All Processes (31 gpm), produced 0.5 yd3 / hr dewatered solids
The raw water influent from the combined influent was tested for BOD and TSS removal and was found to provide 50% particulate BOD reduction and 70% TSS reduction under heavy solids loading conditions.