Jan Rucka

Simulation modelling of water-supply network as mechatronic system

Mechatronics as an interdisciplinary field, which combines knowledge from multiple fields uses a comprehensive approach in the design of any technical object. It combines the requirements and their integration into all subsystems of the technical object. This approach, which is described by the VDI 2006 norm, can generally be used in the suggestion of regulation for the pressure pipe networks.

DESIGN OF THE PUMP CONTROLLER OF THE LOW PRESSURE SEWER NETWORK

The paper deals with the low pressure sewer networks which are used for the systematic drainage of wastewater in locations where it is not technically possible, respectively economically advantageous to build a gravity sewer network. With regard to the size of the urban area, town or drainage site these systems can be very large, involving tens or hundreds of independently working pumps that are connected to the common pipeline system. The right one, or rather the optimal topology design of such a system and performance parameters of its elements is therefore a great challenge. The subsequent operation of the low pressure sewer network system also requires a considerable know-how, particularly with regard to the fact that these are technically complex systems with many components which exhibit a variety of typical operating defects. The removal of these disorders requires a deep understanding of the issues, experience, and availability of adequate industrial solutions. One of the possible failures of the low pressure sewer network is clogging of the pipelines with sediment from wastewater. The following text describes the technical way to prevent the clogging of the pipeline of a low pressure sewer network. This paper presents an intelligent flushing system which is developed within the research project reg. No. TA04010023 at the Faculty of Civil Engineering, Brno University of Technology.

Software Tool for Calibration of Hydraulic Models of Water-Supply Networks

Mathematical modeling and simulation techniques represent powerful tools for optimizing the operation of drinking water supply networks. The hydraulic model of the water supply network needs to be calibrated necessarily to provide reliable results. This article describes a very new software tool that is being developed to help water specialists to calibrate hydraulic models utilizing the hydraulic values measured on the water supply network in-situ. The measurement itself is realized by means of a specialized portable measuring device that enables continuous measurement of hydraulic values in the network. The technical tool for calibration of the network parameters is a newly developed software toolbox for application ADAM which is newly developed simulation software for hydraulic analysis of water supply networks.

Safety of the water supply system in the absence of desinfection residue

e-mail: jan.rucka@vut.cz The paper focuses on the drinking water supply with public water mains without the use of disinfectant residues in the transported water. This method of delivering drinking water can only be considered if a sufficient number of functional barriers are present in the distribution system to prevent the penetration of pollution into the transported water. One of these barriers is, for example, a good technical condition of the water-supply system. The security of water supply without disinfectant is ensured by an initial assessment of the suitability of the water system for this mode of operation, risk analysis and network monitoring in selected critical points of the system.

RISK ANALYSIS OF THE DRINKING WATER SUPPLY SYSTEM OF THE SMALL VILLAGE

The article deals with the application of risk analysis methods to the problems of the drinking water supply by public water supply systems. The examples of a risk analysis and the prioritization of proposed corrective measures are demonstrated on the example of a small municipal water supply system. Within the project WaterRisk a detailed methodology for risk analysis of public water systems was developed, which was subsequently fully implemented in a WaterRisk.cz software tool. With the help of this software the risk analysis can be performed at large complex water supply systems, as well as at the small ones simple public water supply systems, for which the methodology is specially adapted. The result of a risk analysis is among other things also a list of remedial measures which have to be implemented in the water system in order to eliminate the identified risks. The tool was developed with a focus on prioritizing of these remedial measures, while maintaining a comprehensive approach and perspective. The practice shows that it is not possible for operators, respectively, owners of public water supply system, to eliminate all risks simultaneously. It is necessary to complete these steps gradually and split them for the longer time period. It is also necessary to take into account a wide range of external influences and circumstances that enter into the decision-making process. In the case of investment events it is usually about challenging economic projects, which play a decisive role. The decision support system based on risk analyses in this processes offers interesting possibilities of the use. Using a developed methodology is presented in the paper on a case study of a small public water system in the Czech Republic.