Budapest Sludge Management Case Study Istvan Toth Enviroduna Project Management Company, Budapest, Hungary June 2008

Transcription

1 Budapest Sludge Management Case Study Istvan Toth Enviroduna Project Management Company, Budapest, Hungary June Urban Sanitation Workshop Paris 1

2 Hungary and Budapest in Europe Geographical location: Central-Europe, Danube watershed Budapest is the Capital of Hungary EU membership: EU Environmental requirements Total area: 93000km2 Population:10M Urban Sanitation Workshop Paris 2

3 Budapest Wastewater History The beginnings: Roman empire- Aquincum Middle ages Sewers in Pest Sewers in Buda South Pest WWTP: 1966 North Pest WWTP: 1980 Bp Central WWTP: under construction Urban Sanitation Workshop Paris 3

4 Wastewater treatment in Budapest North-Pest Wastewater Treatment Plant Central Watewater Treatment Plant South Pest Wastewater Treatment Plant Urban Sanitation Workshop Paris 4

5 Area of Budapest : Number of inhabitants : Length of sewer system 525 km2 1.85M km Total wastewater: Population connected to sewer system: Type of sewer system : Population served by BCWWTP Wastewater treated by BCWWTP m 3 /d 96% 66 % combined 34 % separated 49% m 3 /d Hungary has signed the Sofia agreement for the protection of Danube river basin in Hungary has joined the EU in 2004, so the Urban Wastewater Directive (91/271/EC) is to be followed Urban Sanitation Workshop Paris 5

6 North Pest WWTP Since 1980 Q d = m Urban Sanitation Workshop Paris 6

7 South Pest WWTP Since 1966 Q d =80 000m Urban Sanitation Workshop Paris 7

8 Budapest Central WWTP Completion date: 31 st of December EU supports the implementation of the projects by the Cohesion Fund. The biggest ongoing environmental protection project in Central Europe. (Σ428,7M/WWTP250M EUR) Green-roof covered compact plant Q d = m Urban Sanitation Workshop Paris 8

9 Outcomes of the BCWWTP project: Meet Urban Wastewater Directive 91/291/EC Prevention and mitigation of water contamination Sustainable water management (protection of drinking water wells) Budapest wastewater treatment situation Development of local environment (more in leisure activities) P, N removal; 24% biological treatment; 15% mechanical pretreatment; 10% w ithout treatment; 51% without treatm ent m echanical pre-treatm ent biological treatm ent P, N rem oval Budapest wastewater treatment situation in withot treatment; 1% mechanical pretreatment; 4% withot treatment mechanical pretreatment treatment according to the requirements treatment according to the requirements; 95% Urban Sanitation Workshop Paris 9

10 Sludge disposal in Hungary aggregated sludge disposal rate % 10% 12% 26% 39% direct agricultural use direct use for recultivation landfill compost for agriculture compost for recultivation Sludge use prediction Iszapelhelyezés idıbeli alakulása Szárazanyag (t/a) ÖSSZESEN mezıgazdaság depóniák energiatermelés egyéb (és ismeretlen) --- total --- landfill/ depo --- agriculture --- energy production --- other/ unknown év Urban Sanitation Workshop Paris 10

11 Sludge treatment and disposal in Budapest WWTP South Pest North Pest BP Central recent future Sludge treatment Sludge disposal Sludge treatment Sludge disposal digestion, biogas utilisation agriculture by contractors digestion, biogas utilisation, ELODE trial (electroosmosys dewatering) agriculture by contractors dewatering, chemical stabilisation landfill digestion, biogas utilisation landfill digestion, biogas utilisation, composting land reclamation, agriculture, (energy production) Urban Sanitation Workshop Paris 11

12 Sludge features in 2011 wastewater sludge Dry solid content wwtp 1000 m 3 /year t/year t/year % North Budapest ,0 South Pest ,0 Budapest Central ,0 South Buda (cancelled) ,0 Total Urban Sanitation Workshop Paris 12

13 Background for sludge utilisation EU- harmonized Hungarian legislation Hungarian wastewater and sludge concept Environmental program of Budapest Budapest Sludge treatment, disposal and utilization study Sludge concept of the operator company (NP, SP) Sludge concept for the BCWWTP UNDER PROGRESS Urban Sanitation Workshop Paris 13

14 Concerns against the sludge civil protest against implementation, transport, operation lack of environment-objected thinking (or oversized) local interests vs community ones regulatory/legal restrictions, discrepancy problems with final disposal: capacity, aversion, hostility (agriculture) economic aspects (energy purpose) reliability (contractual) sustainability Urban Sanitation Workshop Paris 14

15 Thank you for your attention! For furhter information please visit: Urban Sanitation Workshop Paris 15