JoePr
Civil/Environmental
- Feb 12, 2007
- 3
- 0
- 0
We are looking at retroactively adding a screenings washer to an existing mechanical screen, in a prison. The prison wants to be able to discard the screenings in the local landfill, instead of having to truck them several hours each way for disposal. But they also are subject to a possible surcharge by the municipality if their BOD levels exceed certain levels.
Their BOD levels are OK now, but I am concerned that the screenings washer will return enough of the organics back into the sewage to possibly incur the surcharge. How much of the organics would probably be washed back, and how much would be trapped in the compressed screenings?
Would an unwashed ram press be a better choice? The rep tells me the odor might be worse if it is unwashed, but the screen has been at the prison nearly 10 years, and I doubt the odor would be any worse than it aldeary is. I also was told the ram press is less prone to clogging in a prison setting - does anyone have experience with that?
Thank you very much.
Their BOD levels are OK now, but I am concerned that the screenings washer will return enough of the organics back into the sewage to possibly incur the surcharge. How much of the organics would probably be washed back, and how much would be trapped in the compressed screenings?
Would an unwashed ram press be a better choice? The rep tells me the odor might be worse if it is unwashed, but the screen has been at the prison nearly 10 years, and I doubt the odor would be any worse than it aldeary is. I also was told the ram press is less prone to clogging in a prison setting - does anyone have experience with that?
Thank you very much.