The technology vermifilter BIDATEK® is a revolutionary biological system for wastewater treatment that combines sewage treatment with the degradation of the pollution retained during the treatment, thanks to the action of an earthworm population (eisenia foetida).
The biological technology BIDATEK® distinguished itself by being ZERO WASTE, as the treatment process does not generate sludge. On the contrary, pollution is transformed into worm humus, byproduct that can be used as agricultural fertilizer.
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The vermifilter BIDATEK® is formed by different selected substrates to achieve the water treatment and solids degradation.
The following fillers are used for the construction of the vermifilter:
The choice of the substrate and their quantities is related to the flows and loads of the water to be treated and will be determined individually according to the customer needs.
Vermifilter BIDATEK® technology belongs to the family of biofilm processes or biomass solid support processes, but it marks a change in the concept of sewage treatment, as it transforms a waste product (wastewater) into three resources (treated water, organic fertilizer and worms). This represents a perfect example of “circular economy” capable to transform waste into valuable byproducts.
The effluent comes out by the bottom of the filter, with a percentage of BDO elimination higher than 80%. Besides, the pollution retained is degraded until transformed in worm humus, suitable to be used as natural fertilizer. Consequently, an advantage of the filter is that it does not generate unstable sludge and transforms contamination into natural fertilizer. To understand the operation and the characteristics of our BIDATEK® technology, videos and photographs are available on our webpage.
A fine grain substrate in used as support, where the biomass is fixed together with an earthworm “eisenia foetida“ population. The functioning of the system consists in spraying the wastewater on the top filter surface; water runs through the filter layers and pollution is retained in the substrate and digested by the earthworms and the existing microbiology, without any need for reagents or consumables.
La construcción del receptáculo donde se instalan los sustratos del vermifiltro puede realizarse en dos técnicas constructivas:
OPTION 1: VERMIFILTER IN CONCRETE
Concrete container (walls and floor).
OPTION 2: VERMIFILTER HDPE SHEET
Walls in HDPE sheet and floor in reinforced concrete.
The pre-treated wastewater is pumped to the top part of the vermifilter and homogeneously distributed through the whole surface of the vermifilter with Bidatek irrigation systems (“BIDA-EXCEN Multipoint” or “BIDA-RIEG Pivoting-Central”).