Denca controls for United Utilities
20 Jul 2010
Widnes, UK – Endress+Hauser has appointed Denca Controls Ltd. to install and commission the control system for a new sludge incinerator at United Utilities’ sludge and sewage incineration site at Shell Green, Widnes.
Sludge volumes have increased in the UK and Continental Europe over recent years, most notably due to implementation of the EU’s Urban Waste Water Treatment Directive. The trend prompted United Utilities to formulate a wastewater strategy to reduce reliance on land application from 80% to 50% by increasing capacity at its existing digested sludge incineration facility at Shell Green.
The £91-million investment involves increasing capacity and improving efficiency and flexibility at the site and is being delivered as a joint venture between Veolia Water Solutions and Technologies and Costain Limited: collectively known as S3JV.
Sludge has a very high calorific value and the purpose of the Shell Green plant is to burn the sludge to capture this latent energy source. The incinerators employed at the site, manufactured by Bamag in Germany, measure 10 metres high by 6.5 metres in diameter at their widest point fabricated with vertical external steel ribs.
E+H partner Denca gained the order for the £500,000 installation and commissioning of the new incinerator’s control system. Its remit included dealing with all cabling and connections and the switching on of level and pressure instruments for the system, which features PROFIBUS DP and PA.
