It is a good thing to return this organic matter to the soil, but it is likely to contain pathogenic microorganisms.
A very common standardized process of hygienization of sewage sludge is employed as a pretreatment of sewage sludge before application to agricultural land. There exist various methods of hygienization. Please have a look at the web.
After the hygienization step the sewage sludge is safe from the point of view of pathogens content.
There exist some other problems with the application of sewage sludge to agricultural land, for example, the presence of micropollutants.
Best regards
Vit
Sludge re-use in agriculture has increased in many countries, but this practice must be associated with a knowledge of the pathogens present in these sludges.
Gaspard, P., Wiart, J., & Schwartzbrod, J. (1997). Parasitological contamination of urban sludge used for agricultural purposes. Waste management & research, 15(4), 429-436.
Article Parasitological Contamination of Urban Sludge Used for Agric...
it is always a problem while using excess amount of microbial load, evaluation of coli-form count might be useful.
A very common standardized process of hygienization of sewage sludge is employed as a pretreatment of sewage sludge before application to agricultural land. There exist various methods of hygienization. Please have a look at the web.
After the hygienization step the sewage sludge is safe from the point of view of pathogens content.
There exist some other problems with the application of sewage sludge to agricultural land, for example, the presence of micropollutants.
Best regards
Vit
It is possible to guarantee the microbiological safety except the leafy vegitables
Composting is one of the biological methods used in the hygienization and recovery of sewage sludge. To have good hygienic compost, it is necessary to maintain a temperature above 55°C for a few consecutive days during the composting process. However, it is difficult to create suitable homogeneous conditions that guarantee this temperature. In addition, the phenomenon of regrowth of pathogenic bacteria is a veritable problem.
Hello dr. you are right, but generally it is prohibited to apply it in the fields of leafy plants specially those which are used freshly . Thanks
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