M.J. Lepot
24 records found
1
Authored
Sewer asset management
State of the art and research needs
Vortices are a very common phenomenon to consider in many hydraulic engineering problems, e.g. when designing pump sumps or intake works for turbines. Until now, the focus is on avoiding the development of vortices because of induction of cavitation and air entrainment by a fu ...
Interpolation in Time Series
An Introductive Overview of Existing Methods, Their Performance Criteria and Uncertainty Assessment
UV/Vis spectrophotometers have been used to monitor water quality since the early 2000s. Calibration of these devices requires sampling campaigns to elaborate relations between recorded spectra and measured concentrations. In order to build robust calibration data sets, severa ...
Detection and quantification of lateral, illicit connections and infiltration in sewers with Infra-Red camera
Conclusions after a wide experimental plan
Separate sewer systems are sensitive to illegal or mis-connections. Several techniques (including the Distributed Temperature Sensor) are now available to identify and locate those connections. Based on thermal fingerprints, DTS allows the localization of each lateral connecti ...
A technology for sewer pipe inspection (part 1)
Design, calibration, corrections and potential application of a laser profiler
A technology for sewer pipe inspection (Part 2)
Experimental assessment of a new laser profiler for sewer defect detection and quantification
In order to test the laser-scanning device presented by Stanić, Lepot, Catieau, Langeveld and Clemens [1], laboratory experiments have been performed. Various objects, covering a wide range of sizes, shapes, materials, colours and reflectiveness, have been installed in a concr ...
Measurement of sewer sediments with acoustic technology
From laboratory to field experiments
Monitoring sewer sediments is necessary to better understand sedimentation and erosion processes. Sonar is one of the available techniques to proceed to sewer sediment measurements. Extraction of numerical data, implementation of a new algorithm to identify the water-sediment ...
Calibration of UV/Vis spectrophotometers
A review and comparison of different methods to estimate TSS and total and dissolved COD concentrations in sewers, WWTPs and rivers
UV/Vis spectrophotometers have been used for one decade to monitor water quality in various locations: sewers, rivers, wastewater treatment plants (WWTPs), tap water networks, etc. Resulting equivalent concentrations of interest can be estimated by three ways: i) by manufactur ...