monitoring of uwwtps and reporting in germany, nicosia, 17 february 2005 1 control and monitoring of...
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Monitoring of UWWTPs and Reporting in Germany, Nicosia, 17 February 2005
Control and Monitoring of the Urban Waste Water Treatment Plants
and Data Reporting in Germany
Regina Kohlmeyer, Joachim Heidemeier Federal Environmental Agency, Berlin, Germany
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Monitoring of UWWTPs and Reporting in Germany, Nicosia, 17 February 2005
Legal implementation of UWWTD 91/271/EEC via ...
Federal level Waste Water Ordinance *
* see: http://www.bmu.de/files/wastewater_ordinance.pdf
Framework• technical requirements,• minimum emission
standards
Legal Background
Germany
• Federal system: Distribution of competences, responsibilities and public functions between Federation, 16 Federal States and municipalities.
• Population about 80 million inhabitants.
Federal States 16 „Länder“ Ordinances Additional regulations• monitoring frequencies,• definition of additional
legal termsEnforcement
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Monitoring of UWWTPs and Reporting in Germany, Nicosia, 17 February 2005
General UWWT Situation in Germany
• Predominantly catchment area of sensitive area (Baltic Sea and North Sea); Danube catchment „normal“.
• High connection rate:- all Germany 93%- „Old Federal States“ 96%- „New Federal States“ (former GDR) 76%
Urban waste water treatment plantsSize Category Number of
UWWTPs Total Capacity [million p.e.]
> 100 000 p.e. 237 73.6
> 10 000 – 100 000 p.e. 1 860 59.0
2 000 – 10 000 p.e. 2 587 12.4
> 50 – < 2 000 p.e. 5 510 2.8
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Monitoring of UWWTPs and Reporting in Germany, Nicosia, 17 February 2005
Development of public wastewater treatment in Germany (% population)
10
30
20
40
19
32
19
30
44
20
15
21
57
19
10
14
72
10
6,6
11,4
81,3
5,24,2
9,3
87,3
2,237,5
56,9
33
2,126
9,2
26,2
24,2
15,4
25
47,6
30,3
7,4
5,3
9,4
72,2
12,3
4,13,67,8
83,1
6,31,627
88
4,70,21,75,4
0%
20%
40%
60%
80%
100%
1957 1963 1969 1975 1979 1983 1987 1991 1991 1991 1995 1998 2001
not connected to publicsewerage system
not treated in public sewageworks
mechanical treatment
biological treatment
biological treatment includednutrient treatment
old Länder
new Länder
D in total
remarks: up to 1987 no separate recording of biological and nutrient treatment.
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Monitoring of UWWTPs and Reporting in Germany, Nicosia, 17 February 2005
Monitoring ConceptMonitoring aspect
Reference method: UWWTD, Annex I D.2-5.
German method, equivalent according to Annex I D.1:
German Waste Water Ordinance
Sampling
Type Flow proportional or time-based 24-hour-samples
Qualified random samples or 2-hour composite samples
Frequency 12 / 24 samples per annum 6 samples per annum Compliance provision
COD, BOD About 90% of samples not exceeding
Nitrogen, Phosphorus
Annual mean
All 4 out of 5 samples not exceeding para- the limit value direct yes/no- meters decision of each analysis
Parameter
All parameters Full standardized measurement procedure
Screening measurement in general; full standardized measurement procedure only in the range of the limit value
Nitrogen Total nitrogen: the sum of Kjeldahl-nitrogen (organic N + NH3), nitrate- and nitrite-nitrogen
Total inorganic nitrogen: the sum of ammonia, nitrite and nitrate nitrogen
Emission standards (examples) COD COD: 125 mg/L COD: 110 / 90 / 75mg/L
depending on the size of the UWWTP
Nitrogen N: 15 / 10 mg/L agglom. > 10 000 p.e. / > 100 000 p.e. in sensitive area
N: 18 / 13 mg/L UWWTP > 10 000 / > 100 000 p.e. in normal and sensitive areas
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Monitoring of UWWTPs and Reporting in Germany, Nicosia, 17 February 2005
Monitoring Concept - Motivation
Why does Germany apply an alternative UWWTP monitoring method?
• German monitoring concept had been established, before UWWTD came into force.
• Waste Water Ordinance sets minimum requirements for urban and industrial waste water (more than 50 Appendices for different source categories) Same system of requirements, monitoring and control for urban and industrial waste water.
• Quick decision (direct yes/no-decision of each analysis), no averaging, easy enforcement.
• 6 samples per annum sufficient.
• Government analyses are complemented by UWWTP self-checking.
• Study of Pöpel et al. (1996): German method is equivalent to UWWTD method.
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Monitoring of UWWTPs and Reporting in Germany, Nicosia, 17 February 2005
Key:National requirements to the nitrogen removal according to Art. 7a Federal Water Act – Requirements of Annex 1 of the Waste Water Ordinance (as amended, in force from 1 August 2002)
in conformity conformity is being checked not yet in conformity, adjustment is in process
German UWWTPs > 100 000 p.e.
Conformity with the national requirements of the Waste Water Ordinance
(equal requirements for sensitive and normal areas)
Source: Summarized situation report Germany 2003 (Art. 16 UWWTD)
Monitoring Performance
Catchment areas sensitive areas normal areas rivers
Reference date: 31 Dec 2002Data source: Federal States of Germany
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Monitoring of UWWTPs and Reporting in Germany, Nicosia, 17 February 2005
Reporting – Data Management
• Heterogeneous IT systems
established in Federal States:
from legacy mainframe
databases to excel sheets
Flexible import module necessary.
• Federal structure
Data collection and
aggregation of at least 3 levels.
• Enforcement databases are not
designed for COM reporting
Check of data availability to
provide the information needed
• Data transfer to COM via transfer file
EU level
Germany
Federal level
Federal States
Counties, Municipalities
Operators
...
...
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Monitoring of UWWTPs and Reporting in Germany, Nicosia, 17 February 2005
Art. 15(4) Reporting 1999 - First steps
Interpretation of UWWTD terminology
1) Translation of the UWWTD terminology to the terminology used in German implementation regulations.
Example: Term „Agglomeration“German translation „Gemeinde“ means both „agglomeration“ and „municipality“ – municipalities are responsible for waste water collection and treatment
Approach 1: „Agglomeration“ = catchment of UWWTP (1 agglo. : 1 UWWTP)
Approach 2: „Agglomeration“ = contiguous housing (building law)
Consequence: two different data transfer applications necessary
2) Definition of substitutes for missing data
Example: „Nominal load“ of an agglomeration
„Nominal load“ not available in several Federal States
Substitute: Organic Design Capacity * utilisation ratio of UWWTP
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Monitoring of UWWTPs and Reporting in Germany, Nicosia, 17 February 2005
• IT development for internal data collection:UDIS UWWT-application, based on „UDIS“ system
• „UDIS“: tool to facilitate reporting – tool box and application
• Runs on Windows, Unix, Mac
• Supports several databases (ACCESS, Oracle, Informix)
• Flexible csv-Import (new version also XML)
• Powerful query tool
IT solution: UDIS
page name
master data of agglomeration
navigation
switch: list / form view
filter
master data of UWWTP COD/ BOD data
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Monitoring of UWWTPs and Reporting in Germany, Nicosia, 17 February 2005
UDIS system – Query tool
tree structure of data fields
buttons to insert data fields in query or delete them
list of data fields with conditions of query
start query
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Monitoring of UWWTPs and Reporting in Germany, Nicosia, 17 February 2005
Reporting – Experience
• Responsibility for Art. 15(4) reporting: permanent working group
on international reporting on waste water discharges
(technical experts from Federal level and Federal States)
• Time frame of first Art. 15(4) reporting:
6 months required --- 9 months estimated --- 15 months needed
• Quality assurance is a multi-stage process,
beginning from the data-holder level:
check for completeness, plausibility,
indicators for compliance,
time needed for quality improvement
• Result: Effective compilation of reliable Art. 15(4) data.
Experience used for other reporting processes (EPER).
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Monitoring of UWWTPs and Reporting in Germany, Nicosia, 17 February 2005
Summary
• Germany
• Competences shared between Federal level + 16 Federal States
• more than 4 000 agglomerations > 2 000 p.e.
• Monitoring
• Concept equivalent to Annex ID of UWWTD
• Reporting
• Heterogeneous IT systems established in Federal States
• Development of IT solution for data collection:
UDIS UWWT-application with flexible import (csv, XML)
• Important: Clear responsibilities, quality assurance