Dep. of Sanitary Engineering
Membranelagoon Wildberg –
Upgrading of Wastewater Lagoons by Membrane Technology
Dipl. Geogr. Katharina Teschner Technical University Berlin, Germany
Research Project
Dipl. Geogr. Katharina Teschner METU 10.06.2005
Dep. of Sanitary Engineering
Research Background
Dipl. Geogr. Katharina Teschner METU 10.06.2005
Problem in arid and semiarid regions
Drinking water
supply
Agricultural
irrigation
Problem in temperate climates
Reduction of surface water quality due to loading
by effluent of overloaded treatment plants
1
2
Need for waste water reuse
Need for improving effluent quality
Dep. of Sanitary Engineering
Decentralised Wastewater Treatment
Dipl. Geogr. Katharina Teschner METU 10.06.2005
Wastewater lagoons are applied worldwide:
easy to construct
easy to operate and maintain
low investment and running costs
In Germany: more than 1000 lagoons, mainly in rural areas standards according to ATV A 201 giving design criterias
Standards also exist in many other countries.
Sedimentation lagoons
Naturally aerated lagoons
Artificially aerated lagoons
Polishing lagoons
Types:
Dep. of Sanitary Engineering
Decentralised Wastewater Treatment
Dipl. Geogr. Katharina Teschner METU 10.06.2005
Huber VRM membrane unit
membrane module
Membrane bioreactors (MBR) is the latest development in wastewater treatment
small footprint reduced sludge production
disinfection without using chemicals
dropping investment costs
several systems available:
Huber, Zenon, Kubota
In Germany:
more than 10 large scale plants,
the largest for 80 000 inhabitants
started operation in 2004
Dep. of Sanitary Engineering
HUBER VRM
Dipl. Geogr. Katharina Teschner METU 10.06.2005
solid/liquid seperation
effluent free from pathogenic microorganisms
high-quality polymer membranes
pore width: 38 nm
semi cross flow system
permeation vacuum pressure (<200 mbar)
Dep. of Sanitary Engineering
Combined lagoon-membrane system
Dipl. Geogr. Katharina Teschner METU 10.06.2005
Adoption of membrane technology to wastewater lagoons
Transfer of simple wastewater lagoons to membranelagoons
Dep. of Sanitary Engineering
Combined lagoon-membrane system
Dipl. Geogr. Katharina Teschner METU 10.06.2005
considerable increase
of biomass in the
lagoon
Advantages
smaller volume (less than 1
m³/inh. instead of 10 m³/inh.)
smaller lagoon surface
minimizing evaporation losses
effluent free of bacteria, helminth eggs and others
no formation of dangereous by-products
different ways of operation possible with or without nitrification
Dep. of Sanitary Engineering
TP Wildberg
Dipl. Geogr. Katharina Teschner METU 10.06.2005
aerated lagoon 1
aerated lagoon 2
screen VRM
municipal wastewater
seperated sewer system
desigend for 900 inhabitants
700 inhabitants connected
influent
efffluent
permeate
surface water
polishing lagoon
clarifying lagoon
Pilotplant Wildberg
Dep. of Sanitary Engineering
TP Wildberg
Dipl. Geogr. Katharina Teschner METU 10.06.2005
Aerated lagoons
Dep. of Sanitary Engineering
TP Wildberg
Dipl. Geogr. Katharina Teschner METU 10.06.2005
Clarifying lagoon
Polishing lagoon
Dep. of Sanitary Engineering
TP Wildberg
Dipl. Geogr. Katharina Teschner METU 10.06.2005
Pilotplant Wildberg
HUBER VRM 20/15
Membraneplates 60
Membranesurface 45 m²
Membranematerial PES
Turnings 2/min.
Flux (gros) 30 l/(m²*h)
Transmembranepressure 300 mbar
Cross-Flow 50 m³/h
Aeration 16 m³/h
Volume 4,5 m³
Dep. of Sanitary Engineering
TP Wildberg
Dipl. Geogr. Katharina Teschner METU 10.06.2005
Pilotplant Wildberg
DS concentration
1-1,5 g/l
up to 15 g/l
Dep. of Sanitary Engineering
TP Wildberg
Dipl. Geogr. Katharina Teschner METU 10.06.2005
Pilotplant Wildberg
Dep. of Sanitary Engineering
TP Wildberg
Dipl. Geogr. Katharina Teschner METU 10.06.2005
Transmembranepressure/
Flow
bad operation conditions
good operation conditions
Dep. of Sanitary Engineering
TP Wildberg
Dipl. Geogr. Katharina Teschner METU 10.06.2005
Teichkläranlage Wildberg0
10
20
30
40
50
60
70
80
90
100
11.08
.200
4
25.08
.200
4
08.09
.200
4
22.09
.200
4
06.10
.200
4
20.10
.200
4
03.11
.200
4
17.11
.200
4
01.12
.200
4
15.12
.200
4
29.12
.200
4
12.01
.200
5
26.01
.200
5
09.02
.200
5
23.02
.200
5
09.03
.200
5
23.03
.200
5
06.04
.200
5
20.04
.200
5
04.05
.200
5
18.05
.200
5
CS
B A
bb
au
[%
]
Teiche
VRM
Teichkläranlage Wildberg0
10
20
30
40
50
60
70
80
90
100
23.09
.2004
07.10
.2004
21.10
.2004
04.11
.2004
18.11
.2004
02.12
.2004
16.12
.2004
30.12
.2004
13.01
.2005
27.01
.2005
10.02
.2005
24.02
.2005
10.03
.2005
24.03
.2005
07.04
.2005
21.04
.2005
05.05
.2005
19.05
.2005
BS
B5 A
bb
au [
%]
Teiche
VRM
COD degradation
BOD5 degradation
Dep. of Sanitary Engineering
TP Wildberg
Dipl. Geogr. Katharina Teschner METU 10.06.2005
Teichkläranlage Wildberg0
10
20
30
40
50
60
70
80
90
10011
.08.2
004
25.08
.200
408
.09.2
004
22.09
.200
406
.10.2
004
20.10
.200
403
.11.2
004
17.11
.200
401
.12.2
004
15.12
.200
429
.12.2
004
12.01
.200
526
.01.2
005
09.02
.200
523
.02.2
005
09.03
.200
523
.03.2
005
06.04
.200
520
.04.2
005
04.05
.200
518
.05.2
005
NH
4 A
bb
au
[%
]
Teiche VRMTeichkläranlage Wildberg
0
10
20
30
40
50
60
70
80
90
100
110
120
130
28.0
9.20
04
12.1
0.20
04
26.1
0.20
04
09.1
1.20
04
23.1
1.20
04
07.1
2.20
04
21.1
2.20
04
04.0
1.20
05
18.0
1.20
05
01.0
2.20
05
15.0
2.20
05
01.0
3.20
05
15.0
3.20
05
29.0
3.20
05
12.0
4.20
05
26.0
4.20
05
10.0
5.20
05
24.0
5.20
05
NO
3 K
on
zen
tra
tio
n [
mg
/l]
Z Wil Teiche VRM
Ammonia degradation
Nitrate concentration
Dep. of Sanitary Engineering
Conclusion
Dipl. Geogr. Katharina Teschner METU 10.06.2005
Requirements to the productmanagers developing membrane technology:
technology as simple as possible
low maintenance
low energy consumption
long lifespan
Adapted technology for application
worldwide, not only in technically advanced
regions.
Combining wastewater lagoons with membrane filtration works !