Grey water system in Richmond vale academy.
The greywater is water that comes from the showers, laundry and kitchen. Basically is the water that contains inorganic particles like soap, oil and some synthetic compounds.
This water once is used for differents purposes it is thrown to sewage systems or waterbody like rivers, lagoons and seas. These actions are very harmful for the nearby gray water effluent ecosystems and the environment. Having in account the facts that have been happening through the years (soil and water pollution, loss of biodiversity and climate change) it is necessary take action about this situation that affects the whole planet.
In Richmond Vale Academy we are building a greywater recycling system in which we are taking the water from the laundry and six showers, we estimate recycle about 1000 liters of water per day.
For design and built this system, is necessary to consider the type of contaminants, the amount of water, available materials and the use to which it wants to give the treated water. The latter consideration is very important due to this kind of water can’t be used for human consumption, where is include drinking, showers, wash kitchen utensils and cooking.
Some benefits that in Richmond Vale Academy we are going to get with this system are irrigation of passion fruit field and water storage for organic garden, however if in a soon future this system can be improve to increase the quality of the water recycled, it could be used for fish production.
One, Two and Tree
Richmond vale academy grey water system is a process consisting of three stages.
First: A pipe line bring the water from the showers and laundry until a first tank who has the function of reduce the speed of the water for make a sedimentation process in two next tanks.
Once the water came to the first tank, its start to be calm, so a second pipe receive this water to pass to the next tank in which the quiet water begin a sedimentation process where the particles with more weight are going to the fund of the tank and the insoluble particles stay in the surface of the water, this process is repeated one more time in a third tank.
Second: then to the third tank, the water comes without sedimentable solids, that means that the first process has reduced the turbidity of the water.
the function of the second stage include have a deeper cleaner of the water by a gravel filter and the accion of the roots of hydroponic plants.
Third: Finally the water that comes from the gravel filter pass to a small charcoal filter, which remove the particles that couldn’t be removed by the previous process for then being taken to the storage pond.
RVA more than a compromise with the environment has a duty with the community, where this project is make for teach the people to find alternatives for fight the effects of the climate change (like lack of water) and contribute to avoid the contamination of water.
Written by Kelly Quintero