WCW24

The purpose of this presentation is to clearly answer the question “Do I Need Grit Removal?” This will be accomplished in a straightforward, easy to understand manner with references to widely known and commonly used literature in the wastewater industry. The information presented will be backed up with clear and simple photos which put the values into real and tangible sizes which we are all familiar with. Grit in wastewater is often thought of as a necessary evil as it settles throughout the treatment plant. Cleaning of grit-laden basins and repair of rotating equipment due to grit wear are commonly seen as routine maintenance. As wastewater technology progresses and the processes used to treat wastewater become more complex, the need for grit removal will increase to protect these processes. This presentation will also outline the cost of such grit related maintenance items so the attendee can clearly understand the true cost of grit in their plant and decide if grit removal will save enough money in repairs to offset the initial purchase and installation costs of a grit removal system. However, we acknowledge that every plant is different and as such, the amount of grit related maintenance varies widely. It is not every plant which has the need for grit removal because some can simply store it in their lagoons or dispose of it in their sludge. This presentation is intended to help each plant engineer, owner, or operator know what information they need to gather so they can decide for themselves if their plant has reached the point of needing grit removal.