Renovation of the sewers: high-pressure cleaning starts in Lappersdorf!

Renovation of the sewers: high-pressure cleaning starts in Lappersdorf!

The Lappersdorf market commissioned the Hammerer company from Schwandorf to renovate the sewers. These measures, which will be carried out between September and the end of 2025, aim to clean collection channels and connecting pipes using a high-pressure flushing process. In addition, the connecting cables are also visually inspected and measured.
The cleaning and condition assessment takes place in the districts of Kareth and Lappersdorf. In addition, in the northern municipal area, including Lorenzen, Am Schlag, Ziegelhütte, Stettwies and partly Hainsacker, pipes are flushed and connecting pipes are inspected. The connecting pipes of the main sewer are cleaned, driven and measured up to the inspection shaft or up to 2 meters beyond the property boundary.

Residents are asked to keep their inspection shafts clear to ensure smooth operations. Those affected will receive personal letters from Markt Lappersdorf informing them about the progress and progress of the work. The Hammerer company will also provide further information shortly before work begins. Possible slight traffic disruptions due to assembly vehicles are to be expected. Entering private property only takes place in exceptional cases and after prior notification.

Technical backgrounds

High-pressure cleaning is carried out in accordance with [DIN EN 14654-1] and is used to remove obstacles and deposits. This method is often used as a preparatory measure for inspection work, with combined high-pressure flushing and vacuum vehicles with water recovery being recommended. This technique reduces cleaning interruptions, minimizes water consumption and maximizes cleaning effectiveness.
The use of different cleaning nozzles is essential for different types of contamination and channel cross-sectional shapes. The nozzles should be chosen according to the nature of the deposits to avoid damage to sewer pipes such as cracks or holes. The cleaning performance depends heavily on the specific conditions on site; A rough guideline is around 1000 meters of cleaning performance per day for DN 300 with a maximum of 15% contamination level.

Rules and safety regulations

The Wastewater Technical Association (ATV) has published several worksheets that are important for sewer cleaning. These include, among other things, the rules for sewer operation and the operating costs for the sewer system. In addition, accident prevention regulations from the Federal Association of Accident Insurance Institutions establish safety rules for work on wastewater systems and are crucial for the safety of the employees carrying out the work.
Overall, the renovation of the sewers in Lappersdorf represents an important step towards improving the wastewater infrastructure, with the aim of increasing efficiency and safety in the area of ​​wastewater disposal.