Thanks, and point taken. I'm a big fan of low tech processes too, where space permits. I had interpreted the question as being more narrow - a choice between TF and AS - but it could equally be interpreted as an open choice of processes which should include reed beds, lagoons, constructed wetlands, etc.

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Thanks, and point taken. I'm a big fan of low tech processes too, where space permits. I had interpreted the question as being more narrow - a choice between TF and AS - but it could equally be interpreted as an open choice of processes which should include reed beds, lagoons, constructed wetlands, etc.