Estonian Water Works Association – 26th-29th October 2015 (Wallonia - Belgium)
STRATEGIES AND REGULATIONS RELATIVE TO SEWAGE SLUDGE MANAGEMENT IN WALLONIA
Ir. Christian DIDY, Operating department manager
SPGE «Public Water Management Company”
Tel. : 081/25 19 58E-mail : [email protected]
In p.e.:
In sludge:
43,503 tDS in 2013 52,000 tDS at term
I. Context
Estonian Water Works Association – 26th-29th October 2015 (Wallonia - Belgium)
II. Treatment plant sludge management strategy
Landfill site : prohibited since January 1rst, 2007 by WGO of 18 mars 2004 forbidding specific waste to be dropped into technical landfill
Agricultural recycling 85% 44,200 TMS
Co-incineration (1)Cement manufactures (2) 15% 7,800 TMSEnergy recovery after drying (3)TOTAL 100% 52,000 TMS(1) Current capacity : 18,769 TMS/Yr(2) Convention between SPGE and cement manufacturers(3) Dryers (IBW, IDELUX, …), heated greenhouses
Estonian Water Works Association – 26th-29th October 2015 (Wallonia - Belgium)
7,500 TMS/an < 18,769 TMS/an
II. Treatment plant sludge management strategy
IPALLE 435,000 32,625
IBW 95,000 7,125
ICDI 101,000 7,575
INTRADEL 370,000 27,750
TOTAL 1.001,000 75,075
18,769 TMS/yr
(1) 7.5 % of brut sludge (25 % of MS) in domestic rubbish to keep the kiln energy capacity unchanged
Co-incineration sludge potential (brut sludge in tons) (1)
Current waste incineration capacity (in tons)
Intercommunal
Estonian Water Works Association – 26th-29th October 2015 (Wallonia - Belgium)
II. Treatment plant sludge management strategy
0
5.000
10.000
15.000
20.000
25.000
30.000
1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013
Estonian Water Works Association – 26th-29th October 2015 (Wallonia - Belgium)
Regional certificate of use
III. Regional regulation (Wallonia)
Application for the federal authorisation and the regional certificate to allow marketing and use of sewage sludge in agriculture
Producer application documentsSP Wallon Federal Public Department
DGO 3
AgricultureNatural resources
Environment
Food-chain Safety, Public Health and Environment
Request for a prior opinion
DGA (DGO 3)
Favourable opinionOWD ?
Favourable opinionSPF +
OWD ?Favourable opinion ?
CU refusal
FA and CURefusal
Federal authorisation
Producer
FO = favourable opinionUO = unfavourable opinion
FO
UO
FO
FO
UO UO
Estonian Water Works Association – 26th-29th October 2015 (Wallonia - Belgium)
IV. Conclusions
• Europe having discontinued its revision work of directive 86/278/EEC, member states (or regions) have had to develop their own strategy and statutory solutions answering to sewage sludge use requirements, as well as to outline a framework and to decide on sewage sludge treatment processes.
• In order to bring support to those who opted to develop the agricultural recovery potential, the revision will have to consider, not to adopt new measures or conditions financially restrictive and technically cumbersome which should not be duly justified and to support the subsidiarity principle approach in particular to deal with some region’s industrial heritage and some soils own specificity.
Estonian Water Works Association – 26th-29th October 2015 (Wallonia - Belgium)