Wastewater treatment development in

Budapest(with special regard to GEF project in

NBWWTP)

Budapest

River Danube

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

North Budapest Wastewater Treatment PlantNutrient Removal Phase funded by GEF

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

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

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

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

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

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)

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)

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

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

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)

THANK YOU FOR YOUR ATTENTION!