The Grundfos DW pumps are robust, portable submersible pumps with a vertical discharge port.
Available with motors from 0.8 to 20 kW, they are designed to handle dewatering at construction sites, at excavation sites, in building drainage and in similar applications where there is a need to pump raw water or/and at high pressure.
DW main parts are made of aluminium in order for them to be as light as possible. This factor, in combination with the compact design and the high-pressure capabilities, make DW pumps portable and easy to handle. The semi-open type impeller is made of high-chrome stainless steel (550HB) in order to increase wear resistance. DW.50.08 (only) has a polypropylene motor housing.
Applications
DW pumps are excellent for dewatering and draining jobs. The portable design, wear resistant parts and high pressure capabilities ensure the reliability, sustained performance, user-friendliness and ease of servicing that are necessary in demanding dewatering applications at sites such as:
- Construction sites
- Excavations
- Tunnels
- Steel works
- Fish ponds
- Underground parking drainage Industrial drainage pits.
Features and benefits
- Durability
- Portability
- User-friendliness
- Ease of servicing High pressure capabilities Control options.
PT. Andalan Inti Rekatama – GRUNDFOS Authorized Dealer – Service Partner
The Grundfos range of recirculation pumps is the product of decades of engineering experience. Created to handle large flows with low heads, the SRP models are equally suitable for wastewater treatment plants and flood control.
SRP units come in three main variants – DN 300, 500 or 800 mm, fitted with motors from 0.8 to 24 kW. The units share many features with the AMG and AFG gear-driven mixers and flowmakers, making them instantly familiar to service staff and facilitating easy maintenance.
Recent developments include a triple sealing system for maximum protection of the mechanical shaft seal and a bracket that facilitates very easy installation.
Applications
The pumps are suitable for the following applications:
- Re-circulation of sludge within sewage treatment plants
- Storm water pumping.
Features and benefits
- High efficiency stainless steel propeller
- Electronic leak sensor in gearbox/shaft seal housing
- Wide performance range
- Strong axial gear in slim design for high hydrodynamic efficiency
- Integrated overload and overheat protection
- Good self-cleaning capabilities.
PT. Andalan Inti Rekatama – GRUNDFOS Authorized Dealer – Service Partner LEADER Pump
The Grundfos Hydro MPC booster systems are made to the very highest standards. Thanks to the CU 352 controller, they handle even the most difficult boosting jobs with ease and accuracy.
All components have been combined with focus on quality and efficiency. The Grundfos Hydro MPC booster systems are designed to last: sturdy, compact units with easy access to all service parts. Grundfos Hydro MPC booster systems can be used wherever additional pressure is required. Each booster model has been designed to meet specific customer demands for capacity and control.
The intelligent cascade control ensures that the optimum number of pumps required to meet the demand runs at any time. Together with the CR with IE3 motors, this makes the Hydro MPC the most energy-efficient solution for maintaining a constant pressure during changing flow demands.
Applications
- Schools
- Hotels
- Blocks of flats
- Irrigation systems
- Industry
- Municipal supply systems.
Features and benefits
- Reliable highly efficient
- Highly efficient
- Service-friendly
- Space-saving
- Easy to commission
- Perfectly adapting to the flow
- Low-flow detection
- Application-optimised software
- BUS and Ethernet communication option
- Large, clear display
- Menus in plain text
- Log function.
PT. Andalan Inti Rekatama – GRUNDFOS Authorized Dealer – Service Partner
Compared to a water supply system that distributes water and ensures sufficient pressure at the end-user, transporting wastewater requires a wide range of pumps to keep the wastewater moving in an environment of constantly varying pressure. Depending on topography and local regulation, a mix of gravity sewers and pressure sewerage systems may be required.
Grundfos can cover all eventualities, from large-scale, fully-customised pumping stations to complete prefabricated submersible pumping stations; from large axial and mixed-flow pumps that can cope with moving vast flows of surface or storm water at low head to sewage grinder pumps for pressurised systems with small amounts of water and small lifting stations for transporting effluent away from buildings. Furthermore, Grundfos supplies complete control and monitoring solutions.
Grundfos solutions are designed specifically for pumping installations and all the components are fully integrated from the start. The sustainability of wastewater transport over time requires that the pumping solution is durable, ensuring cost effective and trouble-free operation.
Experience with project design means Grundfos can ensure energy optimisation solutions that do not compromise reliability, is able to keep your pumps running during replacement or refurbishment projects, and builds in risk minimisation and sustainability into solutions. This is done, for example, with Computational Fluid Dynamics (CFD) simulations at the design phase, Life Cycle Cost analyses for entire pump systems, and pump audits for energy optimisation.
Grundfos has decades of experience developing controller and monitoring systems for pumping solutions and manufactures its own pump motors for all fluid types and flow requirements. This ensures a perfect match with hydraulics, motors, electrics, and all other mechanical components that make up a comprehensive pumping solution, ensuring the best possible efficiency point.
The high-efficiency motors developed by Grundfos combined with dedicated variable speed drives meet and in some cases exceed the requirements set by motor-efficiency legislation around the world. Considering that on average 85% of a normal pump system’s Life Cycle Cost (LCC) is energy costs, switching to high-efficiency motor technology can mean a LCC reduction of up to 50% and a reduction in environmental impact.
Control and monitoring systems increase the potential for improving both efficiency and reliability. Grundfos supplies external variable speed drives (Grundfos CUE), Dedicated Controls and internet-based supervision (Grundfos Remote Management) that are fully integrated into a pumping system. Dedicated Controls enable easy controlling of typical and special pump functionalities such as energy optimisation and anti-blocking with an easy-to-use SCADA interface. Grundfos monitoring and control systems include plug-and-play communication interfaces that communicate with 95% of the communication standards available on the market.
PULAU INDAH, MALAYSIA: The Pulau Indah sewage treatment plant is located near the North Port in Port Klang. The facility is designed for a development project catering to a population of 160,000 (P.E.). This newly developed sewerage pump system is one of the first in Malaysia where a vacuum system is used to transfer wastewater into the treatment plant. And Grundfos pumps have been used to ensure reliable and efficient pump .
The Situation
The island of Pulau Indah is located off the coast of Malaysia, not far from the country’s capital, Kuala Lumpur. The island consists of mangrove swamp overlain with sand, and the water table is located approximately 1 metre below ground level. The soil conditions at the site meant that a gravity system would be unfeasible, so instead a vacuum system was designed.
The vacuum system made it possible to install the main vacuum sewers at shallow depths and eliminated the need to have four gravity pumping stations as originally planned. Instead, a single vacuum station collects sewage from the entire development project and Grundfos pumps it to the nearby treatment plant. Designed by Iseki Vacuum Systems, the final solution reduced the initial investment cost by 40%. It also significantly reduced operation and maintenance costs for the local water authority.
The Grundfos Solution
Grundfos was chosen to deliver a total of six large-scale raw sewage Grundfos pumps. Each of the 80 kW pumps is explosion-proof and installed in a dry-pit pump house. They are rated to handle 250 l/s at 20 m head. These super-heavy-duty pumps are specifically designed to provide permanent peak efficiency and minimum downtime under the most difficult operating conditions, a fact which makes them the ideal choice for demanding applications. Here, they tie in perfectly with the vacuum system designed by Iseki.
In addition to this, Grundfos also supplied four 6 kW SR sludge recirculator Grundfos pumps. These pumps are used to recirculate wastewater from the aerobic tank to the anoxic tank at a rate of 300 l/s. Moreover, four 1.65 kW SuperVortex pumps handle return activated sludge transfer with ease.
The Outcome
The pumps have performed as planned, providing a crucial contribution to the success of the complete solution. Grundfos is proud to be chosen to be part of this innovative and efficient system, which is perfectly adapted to maximise performance at a challenging site.
