| 摘要 |
Apparatus for cleaning internal walls of at least one conduit (10), for example of a photobioreactor, comprises mobile cleaning means, such as a pig (4) or a bead, within the conduit (10), at least one inlet valve (2) for introducing liquid into the conduit (10) such that said liquid can propel said cleaning means (4) along said conduit (10), at least one aperture (6) in said conduit (10) arranged to permit part of the liquid in said conduit (10) to pass from said conduit into a collection vessel (7), and to prevent passage of said cleaning means (4) through said aperture (6), and pump means (9) to pump liquid passing through the aperture back to the inlet valve (2).
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