Figure 8.
A multi-panel labelled A, B, C shows ejector and deepwell systems with bentonite seal, supply return mains, discharge main, vacuum main, and submersible pump.The multi-panel labelled A, B, C depicts groundwater control systems in vertical sections. Panel A shows a well with a Bentonite seal around a pipe. Panel B shows an ejector system with Supply and return mains connected to an Ejector body within the ground, and a Bentonite seal around the bore. Panel C shows a deepwell system with Discharge main and Vacuum main connected to a Submersible pump installed within the well, with a Bentonite seal surrounding the casing.

Vacuum-assisted dewatering systems: (a) vacuum wellpoint, (b) vacuum ejector well, (c) deepwell with vacuum (figure 2.22 from Preene et al. (2016); reproduced courtesy of CIRIA: Link to ciriaLink to the cited article).

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