April 04, 2009

Greywater system update

The greywater system is up and running. The water goes to the first tank and once the water crosses a point , the pump kicks in and pumps up the water to the filter cum tank . We had a very water intensive day today with a few loads of washing and kids in the bath but from what it appears we might have more water than what we need !! Next stage is to connect the water to the drip system .
Visually the water seems ok , no turbidity , a bit of soap coming through , a few days more till the biological filter or schmutzdecke kicks in.
The removal of contaminants in slow sand filters occurs mainly in the colmation layer or schmutzdecke - a biologically active layer consisting of algae, bacteria, diatoms and zooplankton. A ripening period of 6 - 8 weeks is required for this layer to form, during which time filter performance is sub-optimal.

From here
The amount of water makes me think that maybe we are underutilising the greywater system and should have integrated it with the flush water . But maybe I will just earn some 'brownie points' by offering to water my neighbours patch .

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