Package Sewage & Effluent Treatment Plants: Structural Problems
Examples from Previous Projects (4)
Some More Examples From My Recent Experience:
1. A package plant which was supposed to aerate sewage from a training centre was buried underground in an airtight chamber. Naturally it never worked, and smelled bad whenever the covers were opened. The corrosive gases produced dissolved the badly specified concrete of the chamber, which fell into the aeration tank.
"The corrosive gases produced dissolved the badly
specified concrete of the chamber, which fell into the aeration tank."
2. We were called out to a new model of package plant. The following photographs show its condition just a few months after installation, under normal ground loadings.
Buckled tank wall
Buckled support member
and tank wall
3. A package plant which required a baffle to be retained at low level lost the baffle, resulting in sludge overwhelming the main treatment unit. This was relatively simple to fix, so the purchaser did not have to take the supplier to court as they were minded to when I arrived at site.
The
baffle is at low level below the two grey pipes