Case Studies



Eastern High School

UK's first installation of SDS Aqua-Filter

Overview

Eastern High School is a new centre for secondary and further education in Cardiff; scheduled to open in January 2018 it will accommodate 1200 school pupils and a further 320 college students.

SDS was required to effect the fast and efficient removal of surface water from the site and to ensure its safe dispersal to natural water receptors.

Works were carried out in an environmentally sensitive location with measures taken to protect the existing development from pollution and damage during both demolition and construction.

Consultation with Natural Resources Wales established that there should be no water pollution into the Severn Estuary and that the scheme should include provision for regular monitoring of water quality including visual checks.

How it works

This scheme was required to treat and remove suspended solids from surface water runoff during both the demolition and construction works.

SDS Aqua-FilterTM has been installed as part of a complete water management programme, connected upstream to an Aqua-SwirlTM separator and downstream to a GEOlight® stormwater attenuation system. It provides a high level of water quality treatment through the use of an Aqua-SwirlTM’s swirl chamber for pre-treatment, followed by a filtration chamber for secondary treatment.

The treatment flow rate of the Aqua-Filter™ system has been engineered to meet or exceed the local water quality treatment criteria and form an intrinsic part of the SuDS solution train.The three SDS GEOlight® geo-cellular attenuation tanks have the combined capacity to store up to 1,950m3 of treated water.

results

SDS Aqua-FilterTM, along with SDS Aqua-SwirlTM, have the capacity to limit the amount of silts and attached pollutants from building up in the upper layers of the wider SuDS system and to mitigate against the ability of pollutant bioaccumulations to remobilise in the event of a surge of water, such as after a torrential downpour. In line with the European Water Framework Directive (WFD2015), water polished by Aqua-FilterTM can be discharged into the most sensitive of water courses.

SDS worked in close collaboration with Cambria Consulting, the appointed Civil & Structural Engineers for the design and specification of the sub- and super- structure of the new school; Ed Hoskins, Senior Associate: “This project provided a unique set of challenges on surface water management which demanded that we look ‘outside the box’ and cast our net even wider to identify solutions that we had previously been 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.

Eastern High is a new high school and further education centre, funded by Cardiff Council and the Welsh Government as part of the £164 million ‘21st Century Schools’ upgrade programme across Cardiff. It replaces the former Rumney High School which was demolished to make way for the new, much larger premises. As well as creating an inspiring educational environment, that provides a smooth transition for high school leavers to continue in further, post-16 education and training on the same premises, it also supports the wider local community with a range of leisure and learning facilities.

 

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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