15
ORGANICA Etyek WWTP Etyek, HUNGARY Detailed Case Study
ORGANICA
Etyek WWTP Etyek, HUNGARY
Detailed Case Study
© 2016 Organica Water
Etyek Wastewater Treatment Plant
2
© 2016 Organica Water 3
Project Background
Project: Municipal WWTP
Population Served 8 334
ProcessBiological treatment, biological phosphorus removal plus
co-precipitation
Hydraulic capacity 1 000 m3/day
Year of Completion 2007
Duration of Construction 8 months
Duration of Commissioning 6 months
Handover of Operations to Municipality
2007
© 2016 Organica Water 4
Project Background
• Development limits were the primary factor driving theneed for a new wastewater treatment facility in themunicipality. The proposal of a major film studio in thetown could not be realized with the existing wastewatertreatment plant which in itself was aging and inefficient.
• The initial effluent limits at the original WWTP, usingA2O technology became stricter, and given hugefluctuations in influent quality and quantity from localwine production, this became an increasing challengefor the Town’s wastewater treatment process.
• As water usage slightly decreased over the years,contaminant concentration increased, further loadingthe existing WWTP.
• To make the film studio project successful, the realestate developer sought an independent technicalsolution which could preserve land value and meet theeffluent limits even with the difficult conditions
© 2016 Organica Water 5
Reasons for Choosing Organica
• The treatment plant provides a capacitythat not only satisfies the continuouslyincreasing wastewater treatmentdemands of the settlement, but alsotreats the WW from the new Korda FilmStudio
• The unique architectural design in agreenhouse fit the rural nature of thecommunity in a smaller footprint than anyother solution considered.
• The small size of the plant made itpossible to construct the new WWTPwhile the original WWTP was in operation,thus removing the requirement topurchase additional land.
© 2016 Organica Water 6
Design Parameters
Parameter Influent (mg/L) Effluent/Limit (mg/L)
COD 1 000 100
BOD 500 30
NH4-N 75 10
TN 100 35
TP 15 5
TSS 416 50
Water temperature Min. 12oC Max. 25oC
© 2016 Organica Water 7
Chemistry and Performance Data
• Water quality of both influent wastewater and treated effluent is measured regularly according to local regulations.
• This study includes monthly data values for all major water quality parameters, as certified by an independent 3rd party lab
• Spot samples are taken of raw influent, as well as finished water effluent
© 2016 Organica Water 8
Performance Summary – 2007-2015
Parameter Influent (mg/L) Effluent (mg/L) Limit (mg/L)
COD 632 42.8 100
BOD 325.6 7.2 30
NH4-N 78.8 4 10
TN 99.1 16.7 35
TP 10.2 2.8 5
TSS 282.6 10.9 50
Sample period: 2007-2015 averages from monthly spot samples, based on certified third party results (available on request)
© 2016 Organica Water 9
BOD Concentrations
In spite of exceedances of design influent limits, the WWTP is able to produce effluent quality under the required limits
0
100
200
300
400
500
600
700
Influent BOD5 Effluent BOD5
Design BOD5 Limit BOD5
© 2016 Organica Water 10
Total Nitrogen Concentrations
Regulations require the effluent limits to be met only when the influent concentrations are within the design limits. The above chart shows that in spite of significant exceedances in influent design limits, the system we able to meet the TN limit throughout the period with one lone exception, that exception being a result of TN and Ammonia exceedance along with operator error.
0
50
100
150
200
250
Influent TN Effluent TN
TN Limit Design TN
© 2016 Organica Water
Etyek Facility – Exterior I.
11
© 2016 Organica Water 12
Etyek Facility – Exterior II.
© 2016 Organica Water 13
Etyek Facility – Interior I.
© 2016 Organica Water
Etyek Facility – Interior II.
14
