Wastewater Recycling and Reuse Systems to Drive the Demand in the Municipal Segment - Research and Markets...
Record attendance from 22 companies at Oman exhibition / Country seeks expertise and finance from abroad as the market reforms / Demand for water increasing by 11% a year...
The steady renewal of the “Auer Ring” long-distance drinking water system in the Western Ore Mountains in Saxony – an interim report
Simply for geological and topographical reasons alone, the renewal of a drinking water transport pipeline in the densely wooded region of the Western Ore Mountains is no straightforward undertaking. Thanks to modern piping systems with their highly developed structural design methods, joint technologies and corrosion protection techniques, projects of this kind can be handled without problem. In the case illustrated here, the planning engineers were confronted with a fairly unusual additional challenge in the form of the soft, unbuffered water in the reservoir which, in conjunction with the cement mortar lining of the pipe, can be subject to an inadmissible increase in its pH value in stagnation phases. By using a proven method, endorsed in the DVGW regulations, of applying carbon dioxide gas under pressure in individual sections of the pipeline before acceptance and commissioning it was possible to ensure that the drinking water in the “Auer Ring” always meets the directives of drinking water legislation.
Many large interceptor sewers, predominantly installed under public roads, have been in use for over 100 years. They are made of brickwork or compressed concrete and often show serious damage, so that it would seem that long-term stability can no longer be guaranteed. As an alternative to replacing large profiles, various renovation procedures offer significant advantages with respect to investment costs, environmental protection and urban pollution. Depending on the procedure, it may well be possible to extend the service life, in order to match that of a replacement. However, beforehand, an in-depth study of the current stability and residual load capacity of the existing sewer is required, along with needs-based selection and dimensioning of the rehabilitation procedure. The new standard DWA-A 143-2 serves as a good basis for the necessary static calculations.
S & P Consult GmbH and visaplan GmbH would like to welcome you to UNITRACC. On this independent platform we offer you and our clients free and unique information as well as an exclusive online academy on the subjects of pipeline construction, pipeline maintenance and pipeline management.
New E-Learning Module: C-08 (US) Replacement of Water, Wastewater and Gas Pipelines
The focus of this module is the trenchless replacement method of pipelines by the means of pipe bursting, gallery techniques, and pipe extraction. In addition to the replacement method and process description, this module discusses the areas of application and limits, the advantages and disadvantages as well as possible rehabilitation errors and options for quality assurance.
The module combines this knowledge into 6 lessons:
- Pipe Bursting Basics
- Pipe Bursting
- The Welding of Plastic Pipes
- Pullback of Pipelines
- Gallery Techniques
- Pipe Extraction
For further information, please download the Module Description (pdf-File).
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