Package Sewage & Effluent Treatment Plants: Problems with Specification, Design, Installation, Commissioning and Troubleshooting

Examples from Previous Projects (1)

a. Training Centre

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. Three years of visits from plant installers failed to notice that air conduits supposed to carry air into system had not been fitted. When they were eventually asked at our request to fit the conduits, they fitted them to the primary tank, instead of the treatment chamber. The "designer" was forced to upgrade the plant in accordance with our recommendations at their own expense, as the client still had retention monies. Before our visit the "designer" insisted the plant worked, despite no valid sample evidence.

Does your package sewage / effluent treatment plant have problems? A package plant which was supposed to aerate sewage from a training centre was buried underground in an airtight chamberPhoto shows package plant buried underground in an airtight chamber. Note very poor installation quality: Package plant installers are not professional engineers

 

 

 

 

 

Does your package sewage / effluent treatment plant have problems? The corrosive gases produced dissolved the badly specified concrete of the chamber, which fell into the aeration tankPhoto shows how the corrosive gases produced had dissolved the badly specified concrete of the chamber, which fell into the aeration tank.

 

 

 

 

 

 

Does your package sewage / effluent treatment plant have problems? When they were eventually told at my request to fit the conduits, they fitted them to the primary tank, instead of the treatment chamber.Photo shows conduits fitted to the primary tank instead of the treatment chamber

 

 

 

 

 

 

Does your package sewage / effluent treatment plant have problems? Three years of visits from plant installers failed to notice that air conduits supposed to carry air into system had not been fitted.Photo shows failure to fit air conduits supposed to carry air into system. The vent in the left of this shot is not connected to the surface.

 

 

 

 

 

 

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