wastewater treatment development in budapest (with special regard to gef project in nbwwtp)...
DESCRIPTION
Presentation given at the 6th Regional Conference on Nutrient Reduction in the Black Sea - Danube Basin in Ankara, Turkey. Janos Tobias Katalin Sass Budapest MunicipalityTRANSCRIPT
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Wastewater treatment development in
Budapest(with special regard to GEF project in
NBWWTP)
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Budapest
River Danube
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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
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North Budapest Wastewater Treatment PlantNutrient Removal Phase funded by GEF
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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
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COD 60 mg/l
BOD5 13 mg/l
total N 27 mg/l
NH4-N 17 mg/l
total P 2,1 mg/lSS 8 mg/l
EffluentCOD 527 mg/l
BOD5 310 mg/l
total N 47 mg/l
NH4-N 30 mg/l
total P 9,7 mg/lSS. 247 mg/l
Influent
Influent and Effluent wastewater quality 2006
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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
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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
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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
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Present situationDanube 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)
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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)
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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
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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 investmentsThe GEF project will have a demonstration effect in Hungary and the region
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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)
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