Now that you know the amount of soapy water you want to sow and the type of soil where you will install your system, it is time to choose the most suitable biofilter to sow water where you are.
There are different options depending on the space available, the type of soil, the materials you have in the community and what you want to produce .
🌱 Option 1: Banana circle (For small spaces: 1-3 m²)
💧 Ideal for: Small families, rural homes or home gardens.
📌 Works best in: Sandy or loamy soils.
🍌 Production: Fruits and small trees .
🌿 Recommended plants: Banana, papaya, lemon, soursop.
✅ Benefits:
- It filters water and nourishes the soil with organic matter.
- Produces food and improves shade.
- Low maintenance and easy installation.
✅ What materials do you need to install it?
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Organic matter (dry leaves, thick dry branches, thin dry branches, green leaves)
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Rocks or logs to delimit the circle.
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Shovels or picks to dig the circle
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Soil or compost to improve soil absorption.
🌿 Option 2: Biofiltering planter (For medium spaces: 4-8 m²)
💧 Ideal for: Community dining rooms or schools, large families or urban spaces with permeable soil, if the water comes from a washing machine or kitchen, consult the pre-treatment preparation manual here
📌 Works best in: Sandy or clay loam soils.
🌸 Production: Flowers, medicinal and aromatic plants.
🌿 Recommended plants: citronella, lavender, mint, sugar cane, vetiver grass.
✅ Recommended materials (depending on availability in the community):
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Gravel and gravel (for filtration): rocky substrate from 0.5cm to 3pm and from 3 - 5 cm
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PVC pipes: to channel water
- Plastic mosquito netting
✅ Benefits:
- The water is cleaned and planted to recharge the water table
- You use bioremediation processes without electricity using only gravel, gravel and plant roots.
- It can be integrated into gardens or patios.
- It brings beauty and functionality to the space.
Option 3: Waterproof biofilter planter (to reuse water)
(For places where direct infiltration may be difficult)
💧 Ideal for: Schools, community centers or places with higher water consumption.
📌 Works best on: Clay or clay loam soils.
🌾 Production: Plants with higher water requirements, such as heliconias, ornamentals.
🌿 Recommended plants: Cattail, papyrus, yellow lily, bamboo, heliconias
✅ Recommended materials (depending on availability in the community):
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Grease trap if water comes from a kitchen : see the construction guide here
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Stone or gravel (for filter layers).
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Geomembrane, recycled tarpaulin or a plastic container (to waterproof and allow water to be retained to be in contact with the roots of phytoremediation plants)
✅ Benefits:
- It is possible to sow water in places where there is little soil available (eg: a school yard with a cement floor)
- It can be reused for irrigation or ecosystem conservation. (e.g. eliminating discharges from houses that are directly next to a swamp or river by discharging them)
- It creates a space with biodiversity and refuge for wildlife.
Review the manuals for each system so that you can have greater clarity on the procedures and material requirements.