Abstract

Wastewater pumps are increasingly clogged by solids containing fibers. Closed 2-channel impellers in particular are often highly susceptible to clogging due to their geometric properties, even though they have among the highest clear water efficiencies compared to other wastewater impellers. With the help of a clogging test rig, a prototype that can accommodate different closed 2-channel geometries, the use of three-dimensional simulation as well as an optical access for high-speed recordings, a methodology is to be created, whereby this impeller type can be effectively optimized. In this paper, the first impeller modification is calculated, manufactured, simulated, and tested with this methodology.

References

1.
Thamsen
,
P. U.
,
Höchel
,
K.
, and
Rauwald
,
H.
,
2012
, “
Problem Analysis of Sewage Pumping Stations
,”
Proceedings of the International Rotating Equipment Conference
,
Düsseldorf, Germany
, Sept. 27–28, pp.
2
7
.
2.
Thamsen
,
P. U.
,
Höchel
,
K.
, and
Gerlach
,
S.
,
2013
, “
Effiziente Und Sichere Abwasserförderung
,” WWT 5/2013, pp.
8
11
.
3.
Mitchell
,
R. L.
,
2019
, “
Causes, Effects and Solutions of Operational Problems in Wastewater Systems Due to Nonwoven Wet Wipes
,” Dissertation,
Technische Universität
,
Berlin, Germany
.
4.
Gerlach
,
S.
, and
Thamsen
,
P. U.
,
2017
, “
Cleaning Sequence Counters Clogging – A Quantitative Assessment Under Real Operation Conditions of a Wastewater Pump
,”
ASME
Paper No. FEDSM2017-69020.10.1115/FEDSM2017-69020
5.
Beck
,
D.
, and
Thamsen
,
P. U.
,
2023
, “
Development of Sewage Pumps With Numerical and Experimental Support
,”
Int. J. Turbomach., Propul. Power
,
8
(
2
), p.
18
.10.3390/ijtpp8020018
6.
Surek
,
D.
,
2014
,
Pumpen Für Abwasser- Und Kläranlagen. Auslegung Und Praxisbeispiele
,
Springer Vieweg
,
Wiesbaden, Germany
, Chap. 4, pp.
35
38
.10.1007/978-3-658-02960-9
7.
Gülich
,
J.
,
2010
,
Centrifugal Pumps Second Edition
,
Springer-Verlag Berlin
,
Berlin, Heidelberg, Germany
, Chap. 7.4, pp.
368
373
.10.1007/978-3-642-12824-0
8.
Pöhler
,
M.
,
2020
, “
Experimentelle Entwicklung Eines Standardisierten Abnahmeverfahrens Für Abwasserpumpen
,” Dissertation,
Technische Universität Berlin, Mensch und Buch Verlag
.
9.
DWA-Regelwerk
,
2022
, “
Arbeitsblatt DWA-A 120-2: Pumpsysteme Außerhalb Von Gebäuden – Teil 2: Pumpstationen Und Drucksysteme
,” pp.
64
68
.
10.
Beck
,
D.
,
Brokhausen
,
F.
, and
Thamsen
,
P. U.
,
2022
, “
Time-Resolved Measurements for the Detection of Clogging Mechanisms
,”
ASME
Paper No. FEDSM2022-86961.10.1115/FEDSM2022-86961
11.
Mitchell
,
R. L.
,
Gunkel
,
M.
,
Waschnewski
,
J.
, and
Thamsen
,
P. U.
,
2018
, “
Nonwoven Wet Wipes Can Be Hazardous Substances in Wastewater Systems – Evidences From a Field Measurement Campaign in Berlin, Germany
,”
2nd WaterEnergyNEXUS – International Conference, 2018
, Salerno, Italy, Nov. 14–17, p.
2
.
12.
Beck
,
D.
,
Holzbauer
,
Y.
, and
Thamsen
,
P. U.
,
2021
, “
Different Clogging Behavior of Wastewater Pumps
,”
ASME
Paper No. FEDSM2021-65422.10.1115/FEDSM2021-65422
13.
Steffen
,
M.
, and
Thamsen
,
P. U.
,
2021
, “
Visualisation of Interactions Between Impeller and Textile in a Wastewater Pump
,”
ASME
Paper No. FEDSM2021-65427.10.1115/FEDSM2021-65427
14.
Beck
,
D.
,
Steffen
,
M.
, and
Thamsen
,
P. U.
,
2023
, “
How to Measure the Functionality of Sewage Pumps
,”
Proceedings of 15th European Conference on Turbomachinery Fluid Dynamics & Thermodynamics, ETC15
,
Budapest, Hungary
,
Apr. 24–28
, Paper No. ETC2023-227.
15.
Versteeg
,
H. K.
, and
Malalasekera
,
W.
,
2007
,
An Introduction to Computational Fluid Dynamics
, 2nd ed.,
Pearson Education Limited
,
Essex, UK
, Chap. 3, pp.
91
92
.
You do not currently have access to this content.