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1. STERU sludge and associated risks
Urban sewage sludge is a by-product of the treatment of urban wastewater. Other materials of various kinds are irregularly added to domestic wastewater, and are also treated in STERUs: this may be runoff water if there is a combined collection system or part of one, or materials extracted from septic tanks if the plant is authorized to receive them, or sludge from small STERUs that is added to the sludge treatment process for larger STERUs, etc. This by-product is a by-product of the STERU treatment process.
The sludge generated by STERU plants consists mainly of solid particles that have not been captured/treated by :
water pre-treatment upstream of the plant;
STERU processes.
Sludge is made up of undecomposed organic matter, minerals, micro-organisms...
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STERU sludge and associated risks
Regulations and best practices
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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