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Water management systems – optimised design, engineered to last

SDS sponsors WWT Sustainable Drainage Conference

We are pleased to announce that SDS are sponsors of the WWT Sustainable Drainage Systems Conference, taking place on Wednesday May 1 in Birmingham.

The conference will bring together water companies, local authorities, developers and contractors to debate the current challenges and opportunities for greater SuDS delivery in the UK, and to share developing best practice.

Around a theme of “Changing the mindset around SuDS: Taking an Integrated Approach to Surface Water Management”, the conference will explore new opportunities for multiple stakeholders to work together and realise the full potential of SuDS to take the strain off sewers and other infrastructure to prevent flooding and pollution.

 

The impressive line-up of leading industry experts includes SDS’s Market Development Manager, Jo Bradley, whose presentation focuses on “Effectively managing the quality of surface water runoff whilst minimising harmful pollutants.”  The full agenda also includes retrofitting SuDS, issues for improved adoption and maintenance, as well as monetising and measuring the cost benefits of SuDS.

Jo will also join an expert panel discussion on the impact of greater water company involvement in the design and implementation of SuDS in the light of Sewers for Adoption 8, and the implications for overall performance of water management systems.

To view the full agenda and book your ticket, please visit the event website.

What our Customers say

By master-planning and installing necessary infrastructure at the very beginning, we have future-proofed our community at Berewood, making it more resilient to the horrid weather we have seen recently. The result is that in spite of the worst rainfall for 150 years the land at Berewood has never looked drier.

John Beresford, Development Director, Grainger plc.

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Sustainable drainage enters the mainstream

The effects of climate change were recently spelled out in no uncertain terms in a watershed report by the Intergovernmental Panel on Climate Change. In it scientists made a last-ditch plea for unprecedented change to stop our planet warming to catastrophic levels. Frequently underestimated compared to the effects of coastal and river flooding however, surface water flooding threatens millions of homes and businesses across the UK. Sustainable Drainage Systems (SuDS) are key to building resilience, and the good news is that they are finally becoming mainstream.

Stortford Fields housing development, the UK’s largest SDS GEOlight installation

In August, there were encouraging results from the Government’s review of how effective including SuDS in the National Planning Policy Framework (NPPF) has been in promoting greater uptake in England. It found that almost 87 per cent of all approved planning applications reviewed included explicit mention of SuDS. For architects involved in commercial or housing schemes, the consideration should no longer be whether to include SuDS. Instead the question is, what will constitute a great design? Published in July, the revised NPPF added a requirement for SuDS to provide, where possible, ‘multifunctional’ benefits. Instead of just being a means of getting rid of excess water, drainage becomes an opportunity to reuse or recycle it, and to work with nature to create biodiversity or public amenity. The new emphasis reflects wider ambitions to encourage ‘blue green’ infrastructure in urban environments, combining the best that nature can provide with engineering expertise to produce a transformational result.

To continue reading this article please click here

What our Customers say

This project required stringent control of surface water quality given the sensitive nature of the receiving watercourse in a SSSI. This level of water quality treatment could not be achieved by standard proprietary installations. Following extensive investigation, we identified a solution that we were previously unaware of. Having found the answer we were looking for in SDS’s new hydrodynamic vortex separation and filtration system we are proud to have installed the UK’s very first Aqua-FilterTM. Following successful pre-installation testing we are eagerly anticipating the first set of results of the system in situ.

Ed Hoskins, Senior Associate, Cambria Consulting.

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SDS Tackles Highway Metals Pollution

SDS has developed a groundbreaking new sustainable drainage material that offers a simple and versatile solution to removing toxic heavy metals pollution from highways. SDS Aqua-XchangeTM is a flexible and highly-efficient granular material that captures copper and zinc in surface water runoff from motorways, trunk roads and other high-traffic areas.

SDS Aqua-XchangeTM can be used in regulatory-compliant Sustainable Drainage Systems (SuDS). It has been proven in independent testing to achieve 99% removal of dissolved copper and zinc, toxic metals identified by Highways England as ‘priority pollutants’ and subject to strict regulatory controls.

Delivered to site in lightweight, one cubic metre bags, SDS Aqua-XchangeTM is now available for consulting engineers and infrastructure contractors to deploy as stormwater treatment in highways drainage, as well as on other higher risk locations such as retail car parks, freight and logistics hubs.

SDS worked with scientists at the University of Chester to perfect SDS Aqua-XchangeTM. A unique combination of naturally-occurring materials, it uses the processes of adsorption and ionic exchange to form unbreakable bonds with the heavy metals, including copper and zinc, capturing and retaining them even in heavy storms.

In a typical application, a layer of SDS Aqua-XchangeTM can be added as an additional component to a linear filter drain. Installed at a shallow depth, contractors avoid costly excavation or use of heavy cranes.

 

SDS Aqua-XchangeTM can also be combined effectively with other proprietary SuDS devices. As it can filter out finer silts and sediments, it can be deployed downstream of a hydrodynamic vortex separator such as SDS Aqua-SwirlTM that targets larger particles. It can also be combined with geocellular storage, such as SDS GEOlight®, when additional attenuation is needed as part of the roadside treatment system.

Compliant with guidelines in CIRIA C753 The SuDS Manual, SDS Aqua-XchangeTM can be included as a component in vegetative SuDS devices such as dry swales, raingardens or bio-remediation zones, so that robust retention of copper and zinc is completely assured while plants can continue to thrive as part of the landscaped design.

What our Customers say

The principle of sustainability is fundamental to the development of Westgate Shopping Centre and our adherence to this principle provided our surface water drainage requirements with a number of difficulties to overcome. In close co-operation with SDS we established a unique solution comprising a combination of attenuation tanks, suspended above the basement car park and sandwiched between down stand beams and ground floor slab. Having researched extensively the options available to us it became apparent that only SDS was able to conceive and engineer an effective solution and also undertake its manufacture and installation.

Harry Chetty, Senior Associate Director, Waterman Infrastructure & Environment Ltd.

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Local Authority SuDS Demand Prompts UK Production Deal

Increasing sales of our Aqua-SwirlTM hydrodynamic vortex separator, used to remove polluting silts and sediments from surface water runoff as part of SuDS, has prompted a new partnership with off-site build specialist Asset International.

The innovative technology of the Aqua-SwirlTM was first introduced to the UK market in 2015 along with its sister high-performance filtration system, the Aqua-FilterTM. Production of both devices has already begun at Asset’s state-of-the-art fabrication plant in Newport, using Weholite HDPE components, and the first products have been delivered to site.

The arrangement has more than halved the delivery times to SDS customers as well as providing more opportunity to engineer bespoke components to meet the precise requirements of a drainage design,” says SDS Sales and Marketing Director Richard Averley.

SDS has a well-established reputation among contractors for making it easy and affordable to install compliant sustainable drainage schemes. The SDS Aqua-SwirlTM’s lightweight, plastic construction and large choice of sizes already make it a popular choice. Now contractors can expect even quicker delivery and the opportunity to specify bespoke piped connections to fit the drainage layout on site, thanks to Asset’s superior pre-fabrication facility and the benefits of the Weholite product.

 

Since April 2015, the National Planning Policy Framework (NPPF) has required SuDS to be included in major commercial and housing developments in England. “We expect demand for water quality treatment devices to continue to grow, now that the Government has committed to building more SuDS as part of its 25-year Environment Plan, as well as further strengthening the NPPF to include a requirement for SuDS to be multi-functional,” Richard continues.

Simon Thomas, Managing Director of Asset International, said: “Asset International has more than 35 years’ experience of delivering UK manufacturing excellence in drainage and pipework products. So we are delighted to be partnering with SDS to provide a home base to meet the growing demand for stormwater treatment products.

 

What our Customers say

SDS helped us to engineer a successful SuDS outcome at an extremely challenging brownfield location. SDS GEOlight® tanks were integral to the drainage solution, providing attenuation to meet the very low site discharge rate on a steeplysloping site with limited space and no opportunity to infiltrate. Using below-ground storage in conjunction with surface water drainage features facilitated environmental and wildlife benefits above-ground, while achieving sufficient surface water storage necessary to satisfy planning requirements at this sensitive location.

Ben Rayner, Principal Engineer, Stomor Group.

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Guidance ‘will encourage more blue-green infrastructure’

NEW guidance appears to give water companies greater freedom to adopt Sustainable Drainage Systems (SuDS) and to introduce more rainwater saving and re-use schemes, as well as encouraging the integration of surface water assets into blue-green infrastructure.

Guidance 'will encourage more blue-green infrastructure'

Mark Manning, SDS Business Development Manager, said the guidance’s emphasis on encouraging the multiple benefits of SuDS should be seized as an opportunity for Water Companies to combine water saving with flood risk management.

Not only does the document stress that SuDS should be multi-functional, it also reminds us that opportunities for rainwater to be reused should always be considered first in the design hierarchy.

To continue reading this article please click here.

What our Customers say

The installation of a system comprising a device of concrete construction, until now our only option, would have required the use of a 350 tonne crane and most likely, due to the massive inconvenience not just to us but to the airport and local road network, would not have been feasible at all. The Aqua-Swirl™’s versatility meant that we could design the devices for the specific requirements of this site, without the need for any bends in piping, whilst their inherent strength allowed us to save on time and cost through not requiring a concrete surround. Their compact size and small footprint, together with the lifting supports and straps provided, meant installation was very quick and simple and final placement could be done manually; we needed only a single day in which to dig, position, connect up and back fill.

Brian Fegan, Site Engineer, Whitemountain.

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Pragmatism Will Reap Rewards

A new sense of optimism is in the air among long-time supporters of sustainable drainage systems (SuDS) who have battled to see their more widespread use.

Mark Manning, Business Development Manager, offers practical advice on how to interpret changes to the planning system aimed at driving forward the use of SuDS.

The government began 2018 with a New Year’s resolution embodied in its 25 Year Environment Plan to put more SuDS in place. This was followed up by confirmation of revisions to the National Planning Policy Framework (NPPF), aimed at reinforcing the requirement for SuDS to be included in major new developments.

The environmental benefits that SuDS deliver are clear, both in terms of managing flood risk and protecting the receiving water environment from pollution. Climate change means more intense storms are likely in future and it makes perfect sense to manage rainwater sustainably, as close as possible to the place where it first falls.

To continue reading this article please click here.

What our Customers say

Having reviewed our requirements, SDS took the initiative to design and value engineer a bespoke system, enabling us to pass on significant savings to our client. Their innovative design involved several stages of surface water treatment and was crucial to securing planning approval from the Council and the Environment Agency.

Sean O’Connor, Site Manager, VINCI Construction UK.

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Supply and demand: the water pressure on cities worldwide

Many cities are in danger of running out of water. What can they do about it? SDS Sales & Marketing Director, Richard Averley, helps provide the answer.

It’s astonishing how people react when they fear they are under threat.” Professor Neil Armitage, an urban water management specialist at the University of Cape Town, explains the lengths to which citizens of South Africa’s second city have gone to protect themselves during a recent three-year drought.

There have been bumper sales of rainwater tanks that people attached to their roofs in the hope of catching any rain that falls,” he says. “People have been buying up containers of water from supermarkets and stockpiling them in their garages. They have been queueing at springs on the outskirts of the city to collect water, even though it hasn’t been purified. And the rich have been drilling their own private boreholes at huge expense, despite the increased risk of seawater ingress.

Another angle is to reassess how we use storm water. The approach has traditionally been to funnel it away from the city as fast as possible – be that into the sea or rivers. But a lot of work is going into capturing that water in the city itself using what’s known as SuDS – ‘sustainable drainage systems’.

SDS Ltd is a British firm that fits a wide range of these SuDS to help its customers control water drainage more effectively. As Richard Averley explains: “Most urban drainage systems prioritise getting the water to the closest river as fast as possible – but at times of heavy rain, this can actually result in more flooding.”

To continue reading this article please click here.

What our Customers say

We were really impressed with how the project came together at quite some speed despite the prevailing conditions. We are pleased with the result and the plant is working efficiently.

Sandy Coutts, Distillery Manager, Tamdhu Distillery.

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Sewers for Adoption (8th edition)

New guidance gives water companies greater freedom to adopt Sustainable Drainage Systems.

Commenting on the news, SDS Business Development Manager, Mark Manning, believes that Sewers for Adoption 8 is “a significant milestone for water companies and puts them in a unique position to take the lead in innovative SuDS design.

 

Water UK has published a pre-implementation version of the 8th edition of ‘Sewers for Adoption’ with the expectation that the document will come into effect in mid 2019 as part of the implementation of the Ofwat Code on Adoption Agreements.

The SfA8 manual sets out detailed guidance for the first time to water companies in England and indicates that most compliant SuDS components will be adoptable by water companies, once the document comes into effect.

The guidance represents the latest thinking in best practice SuDS design, following extensive consultation with a wide range of stakeholders, and led by a steering group chaired by Professor David Balmforth.

To continue reading this article please click here.

What our Customers say

SDS helped us to engineer a successful SuDS outcome at an extremely challenging brownfield location. SDS GEOlight® tanks were integral to the drainage solution, providing attenuation to meet the very low site discharge rate on a steeplysloping site with limited space and no opportunity to infiltrate. Using below-ground storage in conjunction with surface water drainage features facilitated environmental and wildlife benefits above-ground, while achieving sufficient surface water storage necessary to satisfy planning requirements at this sensitive location.

Ben Rayner, Principal Engineer, Stomor Group.

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SuDS: Time for a paradigm shift?

In an article featured in wwtonline.com, Mark Manning, SDS Business Development Manager, proffers a more sustainable approach to surface water:

Water Companies have a huge stake in how surface water is managed.  Their sewer networks carry the stormwater load and are the last line of defence against flooding during heavy storms.  At the same time, rainwater collection and re-use is their stock-in-trade.

So, it would be logical, would it not, for them to be in the vanguard of any attempts to prevent surface water from entering the network in the first place? More so than ever, given the challenges of over-capacity.”

Yet, neither regulation nor resources have encouraged Water and Sewerage Companies (WASCs) to own and adopt surface water assets and, in particular, Sustainable Drainage Systems (SuDS) in the past. Instead, organisational culture has focused around the separate streams of potable supply and wastewater collection and treatment.

So, what is sustainable drainage? In order to answer this question, think about what unsustainable drainage looks like: directing rainwater into sewers causes flood risk, unnecessary levels of wastewater treatment and the potential for pollution via combined sewer overflows.

Opportunities to collect and recycle rainwater at source are missed while heavily-treated water is conveyed over long distances and used for non-potable purposes.

To continue reading this article please click here.

What our Customers say

GEOlight® geocellular storage from SDS was the obvious choice for the water management solution designed by Ulrich Groenewald of the engineering project team from AECOM, in coordination with SDS. We were able to work with the architect to deliver a drainage design that satisfied regulations and reflected our analysis of what rainfall we might expect.

Michael Orr, Principal Engineer, AECOM

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EA Water Quality Report short on action

Jo Bradley, Market Development Manager at SDS, proposes that the Environment Agency Report “The State of the Environment: Water Quality” fails to tackle pollution from urban and highway runoff.

In the article, published in April’s issue of “DrainTRADER” magazine and reproduced here, Jo writes that: “Whilst the Report acknowledges that harmful pollution from urban and transport runoff is a major contributor to water quality failures, no action is demanded to tackle the threat from toxic metals, hydrocarbons and microplastics that are washed into the aquatic environment during heavy storms.”

The report is weak, disappointing and sidesteps the need for action to prevent pollution from urban and highway runoff,” continues Jo.

It estimates that the urban and transport sector accounts for 13% of all activities preventing water bodies from achieving ‘good status’, compared to 28% from water industry activities and 31% from agriculture.

Yet it singles out farmers and Water Companies for action to reduce polluting discharges into rivers, without naming a single measure to tackle diffuse and point-source discharges from urban and transport runoff.”

The full article can be read here.

What our Customers say

By master-planning and installing necessary infrastructure at the very beginning, we have future-proofed our community at Berewood, making it more resilient to the horrid weather we have seen recently. The result is that in spite of the worst rainfall for 150 years the land at Berewood has never looked drier.

John Beresford, Development Director, Grainger plc.

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SDS
Spotlight
6mprofit in 2015
 

What our Customers say

SDS played a crucial role in designing a bespoke SuDS solution for this substantial development. As we continue to take on further rail development projects, we will be turning to SDS for their invaluable knowledge and expertise in this specialist and increasingly important sector.

Nico Wessels, Site Manager,VolkerFitzpatrick, attenuation system for Stoke Gifford train maintenance centre

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