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12. Conclusion
In conclusion, urban sewage sludge from urban wastewater treatment plants (STERU) is a complex waste product that presents both environmental challenges and recovery opportunities. These sludges are generated by wastewater treatment processes and contain a variety of organic substances, minerals, micro-organisms and water. Dealing with these sludges requires a meticulous approach that aims to minimize their environmental impact while seeking solutions for their reuse, in order to benefit from the nutrients and energy they contain.
Regulations governing the agricultural spreading of sludge require prior treatment to stabilize and hygienize it. These treatments include anaerobic digestion, composting, thermophilic aerobic stabilization, drying and incineration. Each method has its own specific features and impacts, and the choice of the most suitable technique will...
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Conclusion
Bibliography
Websites
ADEME website – Pages about sewage sludge : http://www.ademe.fr/partenaires/boues/pages/chap14.htm
Sludge regulations
Source: Syndicat Mixte Recyclage Agricole du Haut-Rhin website – SMRA68 – consulted in March 2024
The spreading of organic waste products is...
Standards and norms
- Organic amendments – Composts containing materials of agronomic interest, derived from water treatment – Mandatory standard - NFU 44-095 -
- Fertilizer with mixed characteristics – Organic amendment-fertilizer – Composts containing materials of agronomic interest from water treatment with a P2O5 content equal to or greater than 3%. – Mandatory standard - NFU 44-295 -
- Organic amendments – Designations,...
Regulations
Order of 08/01/98 modified on 03/06/98 laying down technical requirements applicable to sludge spreading on agricultural land.
Decree of 09/09/97 modified on 19/01/06 relating to non-hazardous waste storage facilities: category D. According to Appendix II, sludge is authorized for burial in class II landfills if it contains at least 30% dry matter.
Decree of August 17, 1998,...
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