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 : christian.didy@spge.be

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)