Wastewater Bypass Pumping
When the Flow Cannot Stop
Vortec Solution specializes in portable pumping solutions for bypass pumping of wastewater and stormwater systems, as well as groundwater lowering.
Using modern, high-performance diesel and electric pumps combined with advanced monitoring technology, we safely and efficiently handle large volumes of water and maintain continuous flow in gravity sewer systems. Our solutions are used by construction and civil engineering contractors, industrial companies, municipal wastewater treatment plants and pump stations. We are also prepared to respond to emergency situations, including assisting emergency services during flooding and providing temporary pumping solutions in the event of operational failures at industrial facilities and wastewater treatment plants.
Our extensive experience and commitment are reflected throughout the entire process – from engineering and planning to installation and operation. We ensure that pump capacity, temporary pipework and safety measures are optimized according to the specific conditions of each site. The result is an efficient solution with full operational control and a reliable partner ready to respond quickly when it matters most.
What Are Bypass Pumping and Temporary Overpumping?
Bypass pumping and temporary overpumping are methods used to temporarily divert wastewater or stormwater around a section of pipeline, pump station or facility that has been taken out of service for planned maintenance, renovation or reconstruction.
Bypass Pumping – Diverting Flow Around an Isolated Section
Bypass pumping uses portable pumps and temporary pipework to maintain uninterrupted flow while part of the existing sewer system is isolated. The method is used when work requires a pipeline, pump station or section of the network to be completely drained and depressurized.
Temporary Overpumping – Moving Flow Across an Obstacle or Between Levels
Temporary overpumping involves pumping water from one level or section to another, for example when the flow needs to pass an excavation, road construction project or an area where gravity flow is not possible. The terms bypass pumping and overpumping are sometimes used interchangeably, but the technical solution is always adapted to the specific conditions and requirements of the project.
Bypass Pumping and Temporary Pumping
Bypass pumping is the internationally established term for temporarily diverting a flow around an existing system or section of infrastructure. Temporary pumping of sewer systems is a broader term covering solutions where a portable pumping system temporarily replaces the function of the permanent installation.
Regardless of the application, the fundamental requirement remains the same: the flow must not stop. This is essential for environmental reasons, contractual requirements and to protect surrounding properties and operations from flooding and sewer backflow.
Typical Situations Where Bypass Pumping Is Required
Bypass pumping is required in a wide range of projects within water and wastewater infrastructure, construction, civil engineering and industry. The common requirement is to maintain continuous flow while work is being carried out on, or directly adjacent to, the existing system.
Pump Station Renovation and Replacement
When a pump station is renovated, rebuilt or replaced, the work may take anywhere from a few days to several months. Throughout this period, incoming wastewater or stormwater must continue to be handled. We install portable pumping systems that temporarily replace the function of the existing pump station, helping to prevent disruption to surrounding properties, businesses and waterways.
Relining and Pipeline Rehabilitation
During relining and rehabilitation of existing sewer pipelines, the affected pipeline needs to remain drained and depressurized throughout the work. A bypass pumping system is installed upstream to divert the flow around the affected section and discharge it into a suitable downstream point in the existing sewer network.
Separation of Stormwater and Wastewater Systems
Converting combined sewer networks into separate stormwater and wastewater systems can involve lengthy construction periods, particularly in densely populated areas. Bypass pumping can be used throughout the project as excavation and connection work progresses, ensuring that flow is maintained in sections of the network that have not yet been converted.
New Construction and Pipeline Diversions
During excavation, rerouting of existing pipelines or installation of new infrastructure in densely developed areas, sections of the existing network may need to be temporarily isolated. Bypass pumping allows this work to be carried out without interrupting service to connected properties.
Operational Shutdowns at Wastewater Treatment Plants and Industrial Facilities
Planned maintenance, unexpected equipment failures and process-related shutdowns at wastewater treatment plants and industrial facilities can require immediate access to temporary pumping capacity. We are prepared to respond at short notice and can quickly establish portable pumping systems to maintain production or treatment processes during the shutdown.
Emergency Flooding and Pump Station Failures
In emergency situations such as extreme rainfall, pump station failures or damage to sewer infrastructure, rapid deployment of portable pumping equipment can help prevent serious damage to basements, streets and critical infrastructure. Vortec Solution maintains emergency response capabilities and can mobilize resources around the clock.
How We Plan and Carry Out Safe Bypass Pumping
A successful bypass pumping operation begins long before the first pumps arrive on site. Vortec Solution follows a structured process designed to minimize risk, maintain operational continuity and provide the client with full control throughout the project.
Step 1 – Site Assessment and Flow Analysis
We begin by assessing the conditions of the existing system, including current flow rates, pipeline and pump station dimensions, static and dynamic head, site topography and variations in flow throughout the day and across different seasons. Useful information from the client includes drawings, historical flow data and details of connected properties or operations.
Step 2 – System Design and Equipment Selection
Based on the initial assessment, we design a pumping system with sufficient capacity to handle both normal operating conditions and peak flows. Backup capacity and standby pumps are included to manage unexpected events and maintain operational reliability. Diesel or electric pumps are selected based on site conditions, required operating time, accessibility and environmental requirements.
Step 3 – On-Site Installation
The system is installed with careful consideration for safety, noise, accessibility and surrounding traffic. Temporary pipelines are installed using hoses or rigid pipes together with the necessary non-return valves, plugs, connections and solutions for road and pedestrian crossings. All connections and system components are inspected and tested before operation begins.
Step 4 – Monitoring and Operational Reliability
Throughout the operating period, the system is monitored using level sensors and alarm functions. Vortec Solution can integrate remote monitoring to track levels, flows and operating status in real time, allowing us to respond immediately if conditions deviate from normal operation. On-call support and supervision can be provided according to the requirements of each project.
Step 5 – Decommissioning and Site Restoration
Once the permanent system is back in operation, the temporary pumping equipment is dismantled in a controlled manner. We verify that all connection points are secure, that the sewer network has been restored to normal operation and that the work area is left in its original condition. Final documentation can be provided when required.
Responsibility, Regulations and Environmental Requirements
Bypass pumping of wastewater involves significant responsibility towards the environment, connected properties and the relevant authorities. Working with an experienced and responsible contractor is essential for minimizing risk and meeting the requirements of each project.
Environmental Requirements and Permits
Depending on the nature and location of the project, permits or notifications may be required from municipal water and wastewater authorities, environmental authorities or other relevant regulatory bodies, particularly where temporary discharge to a receiving water body may be involved. Vortec Solution can assist in identifying the requirements applicable to the specific project and how they should be addressed.
Flow Logging and Documentation
Municipal clients and contractors often require flow rates and system operation to be logged and documented throughout the bypass pumping period. We can provide time-stamped flow data and operational reports for final project documentation and regulatory inspections where required.
Risks and Consequences of Incorrect Bypass Pumping
An incorrectly sized bypass system or a pump failure that is not addressed quickly can have serious consequences. These may include sewer backflow, basement flooding in surrounding properties, discharge of untreated wastewater into waterways and significant financial liability. Vortec Solution minimizes these risks through careful system design, redundancy, backup pumps and active monitoring.
Vortec Solution’s Responsibility During the Project
We can take full operational responsibility for the pumping systems we install, including supervision, on-call support and emergency response throughout the operating period. The division of responsibilities between Vortec Solution and the client is clearly defined before the project begins.
Frequently Asked Questions About Bypass Pumping
What is the difference between bypass pumping and overpumping?
The terms are sometimes used interchangeably. Bypass pumping generally refers to diverting flow around an isolated or unavailable section of a system, while overpumping can refer to pumping between different levels or across an obstacle.
When is wastewater bypass pumping required?
Bypass pumping is commonly required during pipeline or pump station renovation and replacement, relining, separation of stormwater and wastewater systems, as well as during emergency shutdowns and flooding.
What can happen if bypass pumping is not used during pipeline work?
Without a correctly designed bypass pumping system, there is a risk of flooding, sewer backflow, discharge of untreated wastewater and operational disruption for municipalities, businesses and connected properties. The resulting damage can be extensive and costly.
How do you size a bypass pumping system?
We assess existing and expected flow rates, pipeline dimensions, total head and operating conditions. The system is then designed with sufficient primary pumping capacity and backup capacity to safely handle peak flows and unexpected events.
What types of pumps do you use for bypass pumping?
We use modern diesel and electric pumps designed for wastewater and stormwater applications. Depending on the project, the systems can handle solids and incorporate level control, alarms and monitoring equipment to maintain safe and continuous operation.
Can you provide bypass pumping during emergency flooding?
Yes. We provide emergency response for flooding, pump station failures and similar incidents and can rapidly deploy portable pumping systems on site.
Which industries commonly require bypass pumping?
Typical clients include municipal water and wastewater authorities, construction and civil engineering contractors, industrial companies, wastewater treatment plants and major infrastructure projects where interruption of flow is not an option.
How long can a bypass pumping system remain in operation?
A bypass pumping system can operate from a few hours to several months depending on the scope and duration of the project, provided that the system is correctly designed, maintained and monitored.
How do you monitor bypass pumping systems?
We use level sensors, alarm functions and regular inspections. Remote monitoring can also be integrated to detect deviations at an early stage and allow action to be taken before they result in operational disruption.
What are the main risks associated with bypass pumping and how do you minimize them?
Potential risks include pipeline blockages, pump failures, power outages and leakage. We minimize these risks through careful system design, redundancy, backup pumps, monitoring and clearly defined procedures for emergency response.
Do you also provide temporary pipework?
Yes. We can design and install both the pumping system and temporary pipework using hoses or rigid pipes, including connections, non-return valves and solutions for road and pedestrian crossings.
What information should we prepare before contacting you about bypass pumping?
Useful information includes drawings, estimated or measured flow rates, existing pipeline dimensions, the project schedule and details about the work area and available space for equipment. The more information available at an early stage, the more accurately we can assess and design the temporary pumping solution.
Do you provide bypass pumping services throughout Sweden?
Yes. Vortec Solution is based in Helsingborg and carries out bypass pumping and temporary pumping projects throughout Sweden.
Can Vortec Solution take full responsibility for bypass pumping in our project?
Yes. We can provide a complete solution covering system design and engineering, installation, monitoring, on-call support, operation and decommissioning, in close cooperation with the client and other contractors involved in the project.