The document discusses wastewater treatment development in Budapest, Hungary, including the existing and planned wastewater treatment plants, and focuses on the North Budapest Wastewater Treatment Plant (NBWWTP) which received funding from the Global Environment Facility (GEF) for a nutrient removal phase. It provides details on wastewater quantities and quality for the NBWWTP, the project costs and financing breakdown for the tertiary treatment upgrade at the NBWWTP funded partially by the GEF, and considerations around operation and maintenance expenses and sewage tariffs in Budapest.

1. Wastewater treatment development in
Budapest
(with special regard to GEF project in
NBWWTP)

3. Budapest
River Danube

4. Existing and planned wastewater
treatment plants of Budapest
General sewage plan of the city prepared
• South-Pest wastewater treatment plant (existing)
• North-Budapest wastewater treatment plant
(existing)
• Central wastewater treatment plant (under
construction)
• South-Buda wastewater treatment plant
(planned)

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- North Budapest- North Budapest- North Budapest- North Budapest
- South Pest- South Pest- South Pest- South Pest
- Central- Central- Central- Central
- South Buda- South Buda- South Buda- South Buda
Wastewater Master Plan of Budapest

6. North Budapest Wastewater Treatment Plant
Nutrient Removal Phase funded by GEF

7. The Existing Wastewater Treatment Plant
Maximum daily wastewater flow : 200 000 m3/d
Average daily wastewater flow : 155 000 m3/d
Maximum hourly wastewater flow: 11 100 m3/h

8. COD 60 mg/l
BOD5 13 mg/l
total N 27 mg/l
NH4-N 17 mg/l
total P 2,1 mg/l
SS 8 mg/l
Effluent
COD 527 mg/l
BOD5 310 mg/l
total N 47 mg/l
NH4-N 30 mg/l
total P 9,7 mg/l
SS. 247 mg/l
Influent
Influent and Effluent wastewater quality 2006

9. Design wastewater treatment capacity
Maximum daily wastewater quantity
Qdmax
200 000
[m3/d]
Average daily wastewater quantity
Qdaver
182 000
[m3/d]
Design maximum hourly wastewater quantity
Qdmaxhmax
12.513
[m3/h]
Quantity of influent raw Wastewater

10. Quality of influent raw Wastewater
Parameter Measurement Concentration
KOI / COD mg/l 733
BOI5
/ BOD5
mg/l 400
N-NH4 / N-NH4 mg/l 41,5
TSS mg/l 348
TP mg/l 10,9
TN mg/l 63,6

11. Requirements for Discharged Water
Parameter Measurement Concentration
KOI / COD mg/l 75
BOI5
/ BOD5
mg/l 25
N-NH4 / N-NH4 mg/l 5
TSS mg/l 35
TP mg/l 2
TN mg/l 30

12. Present situation
Danube River
• one of the continent largest rivers
• most important contributor to nutrient pollution of
the Black Sea
(N: 700 000 t/year, P:70 000 t/year, 10 times the
loads discharged to North Sea from River Rhine)

13. Objectives of the governmental
strategy on wastewater
development
• Sustainable use of natural resources
• Meet the EU requirements (Hungary
joined the EU in 2004 adapting the EU
requirements, EU directives on water)
• Commitments under international
agreements (Danube convention
established in 1994)

14. Financial resources of
developments in Budapest
• Study on optimization of development
resources - 1 850 million US$
• EU and GEF subventions ~ 60%
• Government funds
• Own revenues and loans

15. Project costs of tertiary treatment at
NBWWTP
• Total 23,4 million US$
• GEF financing 6,5 million US$
• IBRD loan 7,2 million US$
• Local financing 9,7 million US$
GEF is playing catalytic role by financing a portion of investments
The GEF project will have a demonstration effect in Hungary and
the region

16. O&M expenses and tariffs in
Budapest
• The actual sewage fee covering
development costs, capital costs and
operational costs with the lowest possible
fee
• Affordable new tariffs (4% of average
households income)
• Tertiary treatment in NBWWTP estimated
at US$ 5 million (0,05 US$/m3
)

17. THANK YOU FOR YOUR ATTENTION!