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Case Study: Water treatment Products - Lydney Sewage Treatment Works

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  • GRP Water Treatment Products - Weirs, Launders and Diffusion Drums
  • GRP Water Treatment Products - Weirs, Launders and Diffusion Drums
  • GRP Water Treatment Products - Weirs, Launders and Diffusion Drums
  • GRP Water Treatment Products - Weirs, Launders and Diffusion Drums
  • GRP Water Treatment Products - Weirs, Launders and Diffusion Drums
  • GRP Water Treatment Products - Weirs, Launders and Diffusion Drums

Project name

GRP Launder Channels, Weir Plates & Diffusion Drum for Lydney Sewage Treatment Works 

Location

Lydney Sewage Treatment Works, Gloucester, England

Application

GRP Launder Channels, Weir Plates & Diffusion Drum for Primary Settlement Tank.

Product

GRP Launder Channels to suit 16M diameter tank
GRP Weir Plates to suit 16M diameter tank
8M diameter GRP Diffusion Drum

Overview

The client approached us to manufacture and supply GRP Launder Channels, Weir Plates & a Diffusion Drum for a Primary Settlement Tank at Lydney Sewage Treatment Works.

Problem/Challenge

Stainless steel is generally used to manufacture launder channels, weir plates and diffusion drums. Although stainless steel is highly durable, it is nonetheless a very expensive alloy. Alternatively galvanised steel may be used for these water treatment products however it is a highly corrosive material and is subject to chemical attack, resulting in high maintenance costs and possible early replacement. 

Solution

Relinea were approached by the client to provide a corrosive free, cost effective solution for these products. GRP provides a highly durable system which offers almost zero life cycle costs but at a fraction of the cost of stainless steel. Relinea provided bespoke moulded GRP Launder Channels, Weir Plates and a Diffusion Drum, manufactured using chemical resistant resin. This ensured the equipment was suitable for the highly aggressive environment it would be exposed to, and would remain corrosive free and maintenance free throughout its life span.

The GRP Launders were manufactured in handable sections with an integral toggle joint to suit a 16M diameter tank, and were assembled together on site. The GRP Weir Plates also incorporated toggle joints, and were bolted onto the Launder Channels. In order to produce the diffusion drum a mould was made and we produced the drum in flanged sections which to create the final product.

Seeing as GRP products are much lighter than steel, an additional benefit was that the water treatment products were a great deal more easily installed on site, hence providing lower installation costs.