Our ecovillage utilizes a biodigester as an excellent solution for sewage treatment. Biodigesters offer the ability to transform waste into usable energy, in the form of methane, and leftover product for fertilizer. Our biosystem consists of a biodigester (left), compensation box (middle), biofilters (right), lake of macrophytes (algae), and root zone (far right). It can be built with relatively low cost and ease, and does not require sophisticated materials or advanced construction knowledge to build.
The biofertilizer produced in the treatment process has no pathogens, due to the anaerobic fermentation it passes through, and is ideal for use in the maintenance of community squares and gardens because it does not pose health risks. It is consolidated as a perfect substitute for chemical fertilizers, which can be more expensive and aggressive to the environment.
The methane gas that is captured in the biodigester is of good quality and can be used in the kitchen of public schools, nurseries and hospitals, or, in large quantities, in thermoelectric plants.
Here in our reserve, initially, we built the biosystem with a focus on sewage treatment. However, the extraction of products from the process far exceeded the expectations foreseen in our planning, and today we have at least two hours of gas daily for consumption in the kitchen and workshop, while biofertilizers are used in the orchard, where we obtained a gain of productivity of at least 50%.
Our reserve practices a zero waste approach toward all of our operations, and recycling methods are well integrated into each particular area of use. The separation of garbage facilitates both the transport and storage, though we maintain a low overall volume due to the care we take in choosing the products we use. We make sure to look for items that are reusable or have a low ecological impact, and contain smaller amounts of packaging or recyclable packaging.
Most of our waste produced is organic and is directed to composting, transformed into fertilizer, and used in the garden, thus restarting its biological cycle.
Many other materials are otherwise used in our studio, for the creation of artistic products or towards construction efforts, allowing for a good alternative to conventional materials.
Our septic system is a composting system whereby the water flows into a septic tank, and then to soak a field. These fields are contained in large block vats, lined with several feet of PVC pipe, then covered with earth and banana trees. The banana roots form a dense mat which then absorbs the water and nutrients from the vat, creating a closed system of bio and phyto (plant) remediation (restoring balance). As a result, our land and river are waste free.
Residual materials are sorted at each work station. Here, the organic ones will be composted.
My apartment building offers a composting option in addition to the general waste and recycling bins.
We noticed the vegetables for dinner came in semi-compostable packaging, with a compostable tray. We are fairly new to composting, but will make sure to notice items like this more.