The amount of GEOlight® required is determined by the volume of water to be stored.
This is determined by the maximum outflow permitted (set by the Water Company or Environment Agency), the impermeable area of the site and the rainfall return period – normally 1 in 100 years with an allowance for climate change.
No; GEOlight® systems can be used under a range of surfaces including grass, porous and standard paving, tarmac and concrete.
The preformed GEOlight® blocks are installed in a modular format and can be positioned to accommodate the physical characteristics and soil type of each site.
No; GEOlight® has high compressive strength and is available in 420 kN/m² strength as standard; higher compressive strengths are also available up to 800 kN/m².
No; a high flow geotextile is placed between the granular fill and GEOlight® attenuation units to prevent silt and particles being washed into the reservoir.
Yes; a full design service, including calculations, is available. Please ask for details.
In the design of water distribution systems, thermoplastic structured wall pipes represent a superior alternative because of their excellent physical, hydraulic and mechanical properties, and behave differently to traditional steel, ductile iron, concrete and other pipe systems.
Weholite ultra strong HDPE pipes can be used for more demanding situations such as inter-process pipework on sewerage treatment plants and for offsite build components.
Weholite HDPE is also suitable for hydroelectric pipelines and intake structures, anaerobic digestion and air vent systems, and as storage, contact and inter-process pipework for drinking water applications.
Weholite pipes can be supplied in ring stiffness classes from 2 to 8kN/m2.
BS EN 13476 ensures a super-high standard for structured wall plastic pipe systems made from only three materials: HDPE, PP or PVC. It is not applicable to, and therefore cannot be used as a standard for, pipes made from other materials or combinations of materials. It covers all aspects of the system for foul and surface water sewers, providing end users with quality assurances as to the raw materials, wall thicknesses, impact resistance, ring flexibility and structural design.
Weholite pipes have also attained certification for DWI Regulation 31 Reference no DWI 56.4.513 “Approved for use in public water supplies” and are WRAS-approved. Through adherence to the current edition of both ‘Sewers for Adoption’ and the ‘Civil Engineering Specification for the Water Industry (CESWI)’ as the guideline documents for this sector, projects can be approved under sections 104, 106 and 38 with both Water Companies and Local Authorities.
Weholite pipes are BBA HAPAS approved for sizes from 450mm to 3500mm internal diameter.
Yes; we provide a full structural design service along with pre-installation meetings.
In the design of water distribution systems, thermoplastic structured wall pipes and panels represent a superior alternative because of their excellent physical, hydraulic and mechanical properties, and behave differently to traditional steel, ductile iron and concrete systems.
Weholite ultra strong HDPE material can be used for more demanding situations such as in sewage treatment plants and for offsite build components.
The manholes are most often incorporated as part of a Weholite or GEOlight surface water attenuation or rainwater storage system, attached to a small diameter surface water/sewerage or integrated with modular attenuation cells.
Yes; SDS provides a full structural design service along with pre-installation meetings.
In the design of water distribution systems, thermoplastic structured wall pipes and panels represent a superior alternative because of their excellent physical, hydraulic and mechanical properties, and behave differently to traditional steel, ductile iron and concrete systems.
Weholite ultra strong HDPE material can be used for more demanding situations such as in sewage treatment plants and for offsite build components.
The chambers are most often incorporated as part of a Weholite attenuation system, attached to a small diameter surface water/sewerage or integrated with modular attenuation cells.
Yes; SDS provides a full structural design service along with pre-installation meetings.
In the design of water distribution systems, thermoplastic structured wall pipes represent a superior alternative because of their excellent physical, hydraulic and mechanical properties, and behave differently to traditional steel, ductile iron, concrete and other pipe systems.
Weholite ultra strong HDPE pipes can be used for more demanding situations such as inter-process pipework on sewerage treatment plants and for offsite build components.
Weholite HDPE is also suitable for hydroelectric pipelines and intake structures, anaerobic digestion and air vent systems, and as storage, contact and inter-process pipework for drinking water applications.
Weholite pipes can be supplied in ring stiffness classes from 2 to 8kN/m2.
BS EN 13476 ensures a super-high standard for structured wall plastic pipe systems made from only three materials: HDPE, PP or PVC. It is not applicable to, and therefore cannot be used as a standard for, pipes made from other materials or combinations of materials. It covers all aspects of the system for foul and surface water sewers, providing end users with quality assurances as to the raw materials, wall thicknesses, impact resistance, ring flexibility and structural design.
Weholite pipes have also attained certification for DWI Regulation 31 Reference no DWI 56.4.513 “Approved for use in public water supplies” and are WRAS-approved. Through adherence to the current edition of both ‘Sewers for Adoption’ and the ‘Civil Engineering Specification for the Water Industry (CESWI)’ as the guideline documents for this sector, projects can be approved under sections 104, 106 and 38 with both Water Companies and Local Authorities.
Weholite pipes are BBA HAPAS approved for sizes from 450mm to 3500mm internal diameter.
Yes; we provide a full structural design service along with pre-installation meetings.
In the design of water distribution systems, thermoplastic structured wall pipes and panels represent a superior alternative because of their excellent physical, hydraulic and mechanical properties, and behave differently to traditional steel, ductile iron and concrete systems.
Weholite ultra strong HDPE material can be used for more demanding situations such as in sewage treatment plants and for offsite build components.
The chambers are most often incorporated as part of a Weholite attenuation system, attached to a small diameter surface water/sewerage or integrated with modular attenuation cells.
Yes; SDS provides a full structural design service along with pre-installation meetings.
SDS is also able to manufacture and supply PN, bespoke and puddle flanges by design, and to produce HDPE Wall Couplers for casting into concrete structures.
Weholite ultra strong HDPE material can be used for more demanding situations such as in sewage treatment plants and for offsite build components.
Yes; SDS provides a full structural design service along with pre-installation meetings.
Systems are sized according to site specific water flow rates, treatment and quality requirements and can even be manufactured to a bespoke size.
SDS Aqua-Swirl® should be connected immediately upstream of SDS Aqua-Filter™ filtration unit, if installed, to maximise the capture of pollutants prior to connection, and upstream of SDS GEOlight®, SDS Weholite or Rigofill® stormwater attenuation or infiltration system.
In suitable conditions SDS Aqua-Swirl® can be fitted to a pre-existing stormwater management system as both the inlet and outlet pipes can be tailored to site specific requirements.
SDS Aqua-Swirl® should be installed in an off-line configuration using an upstream diversion structure to direct only the designed water quality treatment flow through the Aqua-Swirl® system.
No; due to its small size, single sealed unit and low weight, installation can be carried out without the need for heavy machinery.
Yes; maintenance is simple and efficient. SDS Aqua-Swirl® provides direct access via inspection chambers from the surface to any sediment that has been accumulated.
When fitted with SDS SYMBiotIC™ remote system monitoring technology the timing of maintenance and sediment removal visits can be based on the real-time status of the device.
Yes; a full design service, including calculations, is available. Please ask for details
Systems are sized according to site specific water flow rates, treatment and quality requirements and can even be manufactured to a bespoke size.
SDS Aqua- Filter™ should be connected immediately downstream of SDS Aqua-Swirl® separator to maximise the capture of pollutants and upstream of SDS GEOlight® or Weholite stormwater attenuation or infiltration system.
In suitable conditions SDS Aqua-Filter™ can be fitted to a pre-existing stormwater management system as both the inlet and outlet pipes can be tailored to site specific requirements.
SDS Aqua-Filter™ should be installed in an off-line configuration using an upstream diversion structure to direct only the designed water quality treatment flow through the Aqua-Filter™ system.
No; due to its small size, single sealed unit and low weight, installation can be carried out without the need for heavy machinery.
Yes; maintenance is simple and efficient. SDS Aqua-Filter™ provides direct access via inspection chambers from the surface to the filter media and any sediment that may have been accumulated.
Yes; a full design service, including calculations, is available. Please ask for details
To date SDS Aqua-Xchange™ has been most often used in a roadside application; it is installed typically at a time when other works are underway in order to minimise disruption to road users.
Only a quick and simple calculation is required to determine the amount of Aqua-Xchange™ needed, which should be installed at a minimum depth of 250mm in order to achieve the residence time and product interaction that will guarantee the published performance levels.
Alternatively, SDS can calculate for you the required amount for your project.
SDS Aqua-Xchange™ can be deployed in a number of stormwater treatment applications including filter drains, dry swales, bio-remediation devices, infiltration basins and catch pits, and with or without attenuation.
SDS Aqua-Xchange™ is intended for fitment both retrospectively and as part of the original construction project.
SDS Aqua-Xchange™ is also suitable for use in sites with a low to medium risk of pollution, such as residential developments, where it can be used to enhance the performance of other treatment devices, or when the additional removal of soluble metals is required.
No; SDS Aqua-Xchange™ is supplied in 1 cubic metre bags which can simply be emptied in their chosen location and spread manually as might be required to achieve the appropriate depth and coverage.
SDS Aqua-Xchange™ is a “fit and forget” product; once installed, unless there are major changes to the amount of polluted material it has been designed to treat, it has a projected lifespan of 25 years at which point it should be replaced with virgin material. However, SDS recommends that you replace the material with new whenever you are required to remove and replace the layers directly above Aqua-Xchange™.
Yes; a full design service, including material calculations, is available. Please ask for details.
SDS Aqua-Xtract™ would be typically deployed as part of a new wastewater management scheme or to replace or support a pre-existing system.
All SDS Aqua-Xtract™ systems are custom-designed and sized to meet the individual requirements of each site.
No; SDS Aqua-Xtract™ is manufactured in component parts in our Weholite factory and delivered to site in prebuilt sections ready for immediate installation. Due to their light weight no specialist lifting equipment is required, thereby benefiting Health & Safety requirements.
SDS Aqua-Xtract™ is a passive device with no moving parts which removes the need for powered mechanical screen cleaning, as well as reducing installation and operating costs.
The design of SDS Aqua-Xtract™ has been optimised for external access. Maintenance procedures are simplified by providing easy access to the screen and flow channels, flooring and landing platforms.
Yes; a full design service is provided, the output of which requires your approval before production can begin. Please ask for details.
In the design of water distribution systems, thermoplastic structured wall pipes and panels represent a superior alternative because of their excellent physical, hydraulic and mechanical properties, and behave differently to traditional steel, ductile iron and concrete systems.
Weholite ultra strong HDPE material can be used for more demanding situations such as in sewage treatment plants and for offsite build components.
Yes; SDS provides a full structural design service along with pre-installation meetings.
SDS Intellistorm® is suitable for use with pretty much any building which requires a supply of water for non-potable purposes.
Recycled rainwater can be used for any non-potable application, such as irrigating lawns, gardens, green areas, crops and even green walls, flushing toilets, supplying clothes washing machines, cleaning windows and vehicles, cooling machinery and aircon systems.
The system’s benefits are greatest, and the payback period minimised, in geographical areas that have historically high rainfall and/or face seasonal water scarcity, and high water supply charges.
Yes; by combining rainwater and grey water recycling in a joint system, such as at London’s Southbank Place, greater demands for sustainable water supply, both on- and off- site, can be met.
Due to the volume of roof area and water required, rainwater recycling is most often adopted by schools, retail outlets, distribution centres or large commercial buildings.
To enable a system to be designed, an understanding of the roof size, volume of water consumed on site and potential use of the captured rainwater is required.
The system’s benefits are greatest, and the payback period minimised, in geographical areas with both historically high rainfall and high water supply charges.
Yes; by combining rainwater and grey water recycling in a joint system, such as at London’s Southbank Place, greater demands for sustainable water supply, both on- and off- site, can be met.
SDS grey water on demand systems are most suitable for use where there are multiple sources of supply, such as hotels and hostels, gyms, swimming baths and leisure centres, and student accommodation, and also a use for the treated grey water.
With both larger and smaller scale systems, the quality of treated water is comparable to drinking water.
Recycled grey water that has been treated can be used for any non-potable application, such as irrigating lawns, gardens, green areas, crops and even green walls, flushing toilets, supplying clothes washing machines, cleaning windows and vehicles, cooling machinery and aircon systems.
The system’s benefits are greatest, and the payback period minimised, in geographical areas that face seasonal water scarcity and/or have historically high rainfall, and high water supply and disposal charges.
Yes; by combining grey water and rainwater recycling in a joint system, such as at London’s Southbank Place, greater demands for sustainable water supply, both on- and off- site, can be met.
Yes; through our unparalleled design service, we can tailor a solution that eliminates financial and spatial barriers and delivers the most cost-effective low energy solution for each premises.
