PMID- 19809151
OWN - NLM
STAT- MEDLINE
DCOM- 20091217
LR  - 20091007
IS  - 0273-1223 (Print)
IS  - 0273-1223 (Linking)
VI  - 60
IP  - 7
DP  - 2009
TI  - Model-based comparison of two ways to enhance WWTP capacity under stormwater 
      conditions.
PG  - 1875-83
LID - 10.2166/wst.2009.514 [doi]
AB  - Two different approaches to increase the fraction of combined water treated in 
      the wastewater treatment plant (WWTP) which would otherwise contribute to 
      combined sewer overflows (CSO) are presented and compared based on modelling 
      results with regard to their efficiencies during various rain events. The first 
      option is to generally increase the WWTP inflow according to its actual capacity 
      rather than pre-setting a maximum that applies to worst case loading. In the 
      second option the WWTP inflow is also increased, however, the extra inflow of 
      combined water is bypassing the activated sludge tank and directly discharged to 
      the secondary clarifier. Both approaches have their advantages. For the simulated 
      time series with various rain events, the reduction of total COD load from CSOs 
      and WWTP effluent discharged to the receiving water was up to 20% for both 
      approaches. The total ammonia load reduction was between 6% for the bypass and 
      11% for inflow increase. A combination of both approaches minimises the adverse 
      effects and the overall emission to the receiving water.
FAU - Ahnert, M
AU  - Ahnert M
AD  - Institute for Urban Water Management, Technische Universitat Dresden, 01069, 
      Dresden, Germany. Markus.Ahnert@tu-dresden.de
FAU - Tranckner, J
AU  - Tranckner J
FAU - Gunther, N
AU  - Gunther N
FAU - Hoeft, S
AU  - Hoeft S
FAU - Krebs, P
AU  - Krebs P
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
PL  - England
TA  - Water Sci Technol
JT  - Water science and technology : a journal of the International Association on 
      Water Pollution Research
JID - 9879497
RN  - 0 (Water Pollutants, Chemical)
SB  - IM
MH  - Environmental Monitoring
MH  - *Models, Theoretical
MH  - *Rain
MH  - Time Factors
MH  - Waste Disposal, Fluid/*methods
MH  - *Water Movements
MH  - Water Pollutants, Chemical
MH  - Water Pollution, Chemical/prevention & control
EDAT- 2009/10/08 06:00
MHDA- 2009/12/18 06:00
CRDT- 2009/10/08 06:00
PHST- 2009/10/08 06:00 [entrez]
PHST- 2009/10/08 06:00 [pubmed]
PHST- 2009/12/18 06:00 [medline]
AID - 10.2166/wst.2009.514 [doi]
PST - ppublish
SO  - Water Sci Technol. 2009;60(7):1875-83. doi: 10.2166/wst.2009.514.