Hydraulic capacity analysis of an existing combined sewer system using storm water management model
Date Issued
2022-09-14
Author(s)
Nikola Krstovski
Abstract
Most of the sewerage systems in N. Macedonia is said to be separation, but in reality, they are most often combined
systems where in the fecal sewerage system there are large number of connections from the storm sewer system,
which practically in case of heavy rain with low intensity occurs overflow of the fecal sewage system. Also, with the
increasing investment in the construction of wastewater treatment plants, the problems with mixing the sewage water
are problems for the functioning of the treatment plants themselves.
The subject of this paper is to make a hydraulic model using the software package SWMM to determine the hydraulic
characteristics of a combined sewer system at the appropriate intensity of rain from where will be defined: the maximum
amount of water that will come to the wastewater treatment plant, bottlenecks of the existing network, amount
of water that will flow through the overflows, points of overflow of the sewerage, etc. The case study that was used to
create the hydraulic model is for the city of Bitola.
There are various methods for determining the amount of atmospheric water - the authoritative rain that will be used
for analyzing the existing sewerage or will dimension the future sewerage, and in our country the most commonly
used method is method of prof. Gorbachev because it is quite useful when the analysis does not use a sophisticated
mathematical model. However, in this paper a comparative analysis will be made where besides the method of prof.
Gorbachev will use the Rational Method.
systems where in the fecal sewerage system there are large number of connections from the storm sewer system,
which practically in case of heavy rain with low intensity occurs overflow of the fecal sewage system. Also, with the
increasing investment in the construction of wastewater treatment plants, the problems with mixing the sewage water
are problems for the functioning of the treatment plants themselves.
The subject of this paper is to make a hydraulic model using the software package SWMM to determine the hydraulic
characteristics of a combined sewer system at the appropriate intensity of rain from where will be defined: the maximum
amount of water that will come to the wastewater treatment plant, bottlenecks of the existing network, amount
of water that will flow through the overflows, points of overflow of the sewerage, etc. The case study that was used to
create the hydraulic model is for the city of Bitola.
There are various methods for determining the amount of atmospheric water - the authoritative rain that will be used
for analyzing the existing sewerage or will dimension the future sewerage, and in our country the most commonly
used method is method of prof. Gorbachev because it is quite useful when the analysis does not use a sophisticated
mathematical model. However, in this paper a comparative analysis will be made where besides the method of prof.
Gorbachev will use the Rational Method.
Subjects
File(s)![Thumbnail Image]()
Loading...
Name
WMHE 2022_conference_Gdansk Tech-02-GT.pdf
Size
1.32 MB
Format
Adobe PDF
Checksum
(MD5):da539ded43149d366c025035aafa7415