Stabilization ponds are outdated treatment systems, but many of them are still in operation, requiring maintenance. To that end, sedimented sludge is reduced in its interior. Excess sludge takes up an important useful space and reduces the retention time of these ponds and, consequently, their efficiency, which compromises the quality of sewage to be discarded in water bodies, in addition to causing serious bad odor problems.
The solutions currently adopted by utility companies are the mechanical extraction of sludge or the use of biotechnological solutions.
Mechanical extraction represents a high-value investment, and, for this reason, it is not the most used option. The use of biotechnological solutions is the alternative that has been consolidated with sewage treatment companies due to the lower investment value and for being an environmentally responsible technology, since mechanical extraction has an environmental liability (the sludge removed, which must be discarded in sanitary landfills or even in industrial landfills, if it has Class I contaminations).
Millenniun has the biotech solution for this situation and presents the benefits it provides below.
- Reduction of biodegradable solids (volatile solids)
- Reduction of bad odors
- Increased retention time of lagoons (increase in useful volume)
- Reduced costs with mechanical extraction and final disposal of sludge
- Improved quality of treated sewage to be discharged into water bodies
