INGREDIENTS:
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RIVER BIOFILTERBy using different types of plants and soils in succession, you can create a living filter which is able to remove toxins, harmful metals and produce clear and clean drinking water. You can construct different tiers to hold the various plants and soils or you can dig them into a sloping landscape. The purpose of both methods is to have gravity pull water through the different systems in order to purify it.
In nature, gravity pulls rain water down through many levels of plants, soil and substrate. The river biofilter recreates this process on a smaller scale and through a less vertical format. The length of your river biofilter will be dependent on the volume of water you will need to treat. If you need to produce enough water to satisfy the needs of a town or a city, the biofilter will need to be kilometer(s) long. If you need to produce enough water for a household, the river biofilter should be at least 20-50m long. The longer it is, the more phytoremediation will take place and the cleaner the final product. Plants:
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MAINTENANCE: Maintenance will depend on how you construct your biofilter; if you create above-ground containers made of cement, metal or wood there will be occasional break-down of the material which will need repair or replacements. If you create a series of in-ground tiers, your biofilter’s plumbing may occasionally need to be fixed.
CONSTRUCTION TIME: Constructing a river biofilter, which will treat water for a household, could be done by one person in less than a week.
CONSTRUCTION TIME: Constructing a river biofilter, which will treat water for a household, could be done by one person in less than a week.