I would like to build a pilot-scale anaerobic digester to demonstrate the advantages of such a system for reducing sludge volume, dewatering odors, and electrical needs at a wastewater plant. Does anyone have a working knowledge of this process? If so, I am looking for the following information/advice.
1. For a continous flow digester, should one really expect a 20 day detention time to completely digest the sludge? This is the amount of time I have been seeing on various websties and I am amazed that it takes so long.
2. Can activated sludge from the secondary clarifier be digested or is it only a viable process for sludge from primary clarifiers?
3. Are there any pictures of pilot scale digesters that I can look at to see a general layout? I am mainly concerned with the layout of the digester itself rather than the entire setup. I will need to know where to place baffles, inlets, and outlets, etc.
4. What reduction in sludge volume should be expected?
5. How much electricity (ballpark) can be generated from sludge in terms of kwH per lb VSS or TSS?
1. For a continous flow digester, should one really expect a 20 day detention time to completely digest the sludge? This is the amount of time I have been seeing on various websties and I am amazed that it takes so long.
2. Can activated sludge from the secondary clarifier be digested or is it only a viable process for sludge from primary clarifiers?
3. Are there any pictures of pilot scale digesters that I can look at to see a general layout? I am mainly concerned with the layout of the digester itself rather than the entire setup. I will need to know where to place baffles, inlets, and outlets, etc.
4. What reduction in sludge volume should be expected?
5. How much electricity (ballpark) can be generated from sludge in terms of kwH per lb VSS or TSS?