Greywater Treatment Services

Irrigation ditches are simple and reliable to operate. They can be constructed with cementboards for both walls and and tops. (the commercial name is Cetris board). Greywater is simply pumped or gravity drained into the ditches from a dosing chamber. Once in the ditch and on the ground the organics is slowly decomposing aided by both micro and macro organisms.

The top cover becomes the walkway between the plant-rows. For inspection or maintenance the top covers are easy to lift off. A distribution plate is placed under the pipe exit to avoid for the water to errode the area where the water lands. Food residues and fat from the kitchen discharge will build a successive clogging mat but will also be consumed by earth worms and Sowbugs etc. Hash cleaning chemicals containing chloride and Fluorides should be avoided at least not flushed down the sinks.

The second proposal is more for permanent construction with more conventional elements but is a design for greywater and allows for much less maintenance than if toilet waste is mixed in. Sludge can be removed every four years instead of everyyear.

Yearly maintenance is usually required by law when a septic tank is installed for sludge and grease removal. A septic tank needs to be accessible by a sucktion truck. If good infiltration soil is not available, as can often be the case in the archipelago or on steep building lots, the greywater can be pretreated as shown below and as the final treatment be used in planterbeds, sometimes terraced, as part of the landscaping. The plants receive both irrigation and fertilization by this method.