Services of Project
- Project
- Sewer Rehabilitation
- Sewer and Pipe Services
Sewer Rehabilitation includes the repair, renovation, and renewal of wastewater sewers, property drainage lines, and manholes located outside of buildings. Our DKS Group partners specialize in using state-of-the-art technology and innovative methods to deliver tailored, on-time, and high-quality results.
A flexible liner soaked with resin is either inverted into the sewer using water or air pressure or pulled in using a winch. The resin cures through heat or UV light, forming a new pipe within the old one. This method is suitable for diameters from DN 100 to DN 2000.
A pre-deformed plastic pipe is pulled into the damaged sewer using a winch. With heat and air pressure, the pipe returns to its original shape, fitting tightly to the interior wall of the old pipe.
Lining pipes are inserted into the old pipe and joined to form a continuous line. A space between the inner wall of the old pipe and the outer wall of the liner is required. This method is applicable to both walkable and non-walkable pipes and in all cross-section shapes.
This spot repair involves resin-impregnated carrier materials that are cured in place using air pressure. The materials bond with the pipe to seal localized damage.
Used to seal cracks and root intrusion, these sleeves are mechanically expanded and fixed in place. Variants include stainless steel with rubber seals, rubber sleeves with stainless bands, and bonded stainless sleeves.
These seal the transition area between liner and old pipe and are available in different formats.
A hardening material is applied to the surface of sewers, manholes, or other drainage structures, forming a protective layer. Materials include mortar or polymer resins, applied by hand or machine.
or resins are injected under pressure. These are applied for socket sealing and crack repairs.
and more. They are essential for trenchless repair, especially in non-walkable sewers.
Robots remove protrusions, roots, and debris in circular pipes. They also reopen lateral connections post-lining. Used in DN 150–800 and special profiles.
Repairs leaks and connection faults in circular, non-walkable pipes using robotic machines that inject repair material directly at the defect.
Also called stub or lateral repairs, this service addresses the connection between mainline and lateral. Hut profiles and grouting methods are commonly used.
These resin-impregnated profiles are placed using a setting device and cured in place to seal lateral connections.
Used for sealing leaks in all types of pipelines. Injection, grouting, and short liner methods are typically applied.
Seals leaking joints between two pipe sections.
Small-diameter CIPP liners are used in building connections. They can be installed from the building or from the mainline using the MtH method.
A trenchless method for rehabilitating building connections from the mainline without accessing the building. DF-ING has patented the MtH 2.0 technique for enhanced efficiency.
Manholes and structures are also subject to aging. Since they are accessible, manual repairs are often possible. After preparation, surfaces are sealed or coated using tools like the innovative manhole liner.
Wir schützen Beton- und Mauerwerksbauwerke nachhaltig vor chemischen und mechanischen Belastungen. Durch spezielle Beschichtungen und Oberflächenbehandlungen verlängern wir die Lebensdauer von Kanälen, Schächten und Bauwerken – zuverlässig und dauerhaft.
Geschädigte Betonoberflächen in Großprofilen werden fachgerecht instandgesetzt. Mit geprüften Mörteln, Spritzbeton oder mineralischen Systemen stellen wir Tragfähigkeit und Dichtigkeit wieder her und verhindern weitere Korrosionsschäden.
Beim Montageverfahren entsteht im bestehenden Altkanal ein neues, tragfähiges Rohrsystem. Vorgefertigte Segmente, Halbschalen oder komplette Pipe-in-Pipe-Systeme werden vor Ort eingebracht und verbunden. So entsteht quasi ein „Neubau im Bestand“ – langlebig, hoch belastbar und flexibel an verschiedene Querschnitte anpassbar.
Mit Kurzrohrrelining werden stark beschädigte Großprofile durch den Einbau von neuen, kurzen Rohrelementen saniert. Die einzelnen Kurzrohre werden nacheinander in den Kanal eingezogen und dicht miteinander verbunden. Das Verfahren eignet sich besonders bei hohen statischen Anforderungen und ermöglicht eine Sanierung ohne Vollausbau.
Wir sanieren und erneuern geschädigtes Mauerwerk in Großprofilen – vom Gerinne bis zur Schachtwand.
• Gerinneausbau: Neubau oder Verstärkung von Gerinnen für optimale Abflussbedingungen.
• Schachtmauerwerk & -auskleidung: Reparatur und Auskleidung zur Wiederherstellung von Standsicherheit und Dichtigkeit.
• Trockenwetterrinnen: Herstellung neuer Rinnen für sichere und effiziente Ableitung bei geringen Wassermengen.
Zur dauerhaften Sicherung der Dichtheit setzen wir verschiedene Abdichtungstechniken ein.
• Kompressionsbänder: Elastische Dichtbänder für Fugen und Anschlüsse.
• Injektionstechnik: Abdichtung durch gezielte Injektion von Harzen oder Gelen in undichte Bereiche.
So werden Fremdwassereintritt und Austritt von Abwasser zuverlässig verhindert.
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