The control of organic wastes is a problem in the aquaculture industry; its wastes are considered hazardous and require different management. New odour control systems have come to offer a solution to the problem, and it has been validated that using an enzymatic catalyst compound reduces odour, the fermentative phenomenon and produces a material that recovers degraded soils called CaDOS. We evaluated if CaDOS compound could work with salmon mortality and waste produced in a recirculating fish farm. For this purpose, controlled sludge units and mortality were maintained with the catalyst at 5% for five days. Biochemical components such as nitrogen, potassium, and phosphorus were measured, and the odor was recorded using a static odometry model. This drop in odor is associated with a reduction in fermentation, which is explained by a decrease in the number of bacteria present, which was observed by a luminometry technique, measuring a reduction in bacterial load in the samples. At the end of the period, the catalyzed material was incorporated into the soil to observe the presence of vectors and their effects on seeds, and germination was measured, showing that the catalyzed material did not generate problems in the soil. The results indicate that the biochemical components of the catalyzed material increased concerning the control condition, and this was dependent on time; likewise, the odour report was reduced when the catalyst was used, and this was confirmed because when it was applied to the soil, the presence of vectors or alteration of the vegetation was not seen. The results allow us to indicate that using this CaDOS catalyst system is an alternative for odor control and reduces the time of waste disposal directly to soil as compost; this allows more sustainable waste management and is an innovative way of sludge management.
Keywords
Waste; Odor; Soil