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Sludge Treatment Service
Conventional anaerobic digestion of sewage sludge is limited by the hydrolysis step (technical digestion limit). Treating (waste activated) sludge with ultrasonic overcomes this limit. The anaerobic digestion process is intensified and further degradation is achieved. This reduces the quantity of digested residual sludge, while biogas production increases.
The degradation of the organic sludge fraction in conventional anaerobic sludge stabilization is limited by the rate-determining hydrolysis step. Degradation rates of 50 % are rarely achieved. The reason for this is the difficult-to-access bacterial biomass of the excess sludge. This is broken down (disintegrated) by sonication with the ULTRAWAVES ultrasonic technology, and is thus more readily available for the subsequent biological-enzymatic degradation process.
Even at low energy inputs, ultrasonic causes a breakdown of the floc structure and the release of exoenzymes. This increases the interface between the solid and liquid phases and thus facilitates the enzymatic attack of the active microorganisms. Higher energy input leads to the disruption of bacterial cells, releasing cell contents and endoenzymes. These enzymes further accelerate the degradation process.