The paper presents the way in which the electrical control and automation system of the 5 mc combined sewer and gully cleaning vehicle equipped by a local company was designed, using the intelligent relay of the easy 700 type of Moeller (Eaton) company. The control of all the equipments is performed locally from the control panel and some of them can also by remote controlled by means of the ra...

The combined modeling and control task for a multi-joint sewer inspection system is described. The robot, called MAKRO1.1 is of worm-like shape and designed for pipes of 30 to 60 cm width. Since the control of more than 20 degrees of freedom is not a simple task, we need simulation of the robots kinematics before and during every run. In this case, our simulation of the robot’s motions is fast ...

Combined sewer sediment properties were studied in small-scale laboratory ̄umes. Physical and biological characteristics of freshly remoulded sediment beds and beds undisturbed for 1±4 days were examined. When sediment beds were incubated for 1±2 days, the beds became covered with bio®lm and the bed volumes increased by 20±40% due to the formation of methane-®lled cavities. The bed strength dec...

Discharges of combined sewer overflows (CSOs) and stormwater are recognized as an important source of environmental contamination. However, the harsh sewer environment and particular hydraulic conditions during rain events reduce the reliability of traditional flow measurement probes. An in situ system for sewer water flow monitoring based on video images was evaluated. Algorithm to determine w...

Rivers are often challenged by fecal contaminations. The barrier effect of sediments against fecal bacteria was investigated through the use of a microbial source tracking (MST) toolbox, and by Next Generation Sequencing (NGS) of V5-V6 16S rRNA gene (rrs) sequences. Non-metric multi-dimensional scaling analysis of V5-V6 16S rRNA gene sequences differentiated bacteriomes according to their compa...

Stormwater detention tanks are widely used for mitigating impacts of combined sewer overflows (CSO) from urban catchments into receiving water bodies. The optimal size of detention tanks depends on climate and sewer system behaviours and can be estimated by using derived distribution approaches. They are based on using a stochastic model to fit the statistical pattern of observed rainfall recor...