7. Sludge stabilization
7.1 Principle
More specifically, it involves stabilizing organic matter. The aim of this process is to reduce the sludge's fermentable capacity. This reduction offers several significant advantages, including the elimination of unpleasant odors.
Various methods can be used to stabilize sludge. These techniques are suitable for a variety of sludge types, and can be applied either to freshly produced sludge, or specifically to sludge generated during secondary treatment stages.
The treatments used to stabilize these sludges can be classified into three main categories according to their nature.
Firstly, biological processes use micro-organisms to break down the organic matter contained in...
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Sludge stabilization
Agricultural spreading
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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