Water & Wastewater Treatment

The experience and knowledge of Selwood's pump rental specialists came to the fore when a site survey was carried out, including discussing the various options with the client. Selwood was able to provide a bespoke solution by supplying one of the new S200 electric drive pumps – a model that was able to match the incoming flow and rising main head requirements for the operation. Solids handling ability The S200 is part of the solids handling S range that is renowned for its trouble- free pumping of raw or screened sewage, sludge or slurry, water with fine and large solids, and water containing rags and fibres. The S200 features a capacity of 560m3/h, a total head of 23m and can transfer solids sizes of up to 100mm. Due to the confines of the site, standard 8-inch wire armour hoses were deemed to be too long and did not provide enough flexibility. Eight-inch flanged composite hose, supplied in shorter 5‡ lengths and significantly more flexible that wire armour hose, THE PUMP EXPERTS The Unique Screw Centrifugal Impeller The Heart of all Hidrostal pumps Hidrostal's unique impeller incorporates an excep onally large free passage, which ensures that its ability to pump raw unscreened sewage is second to none. Ideal for Solids Handling, Rag Handling, Pumping Viscous Sludges and Handling Delicate or Low Shear Products; unique to all Hidrostal pumps is the ability to handle each of these in combina on, whilst maintaining high efficien- cies (80%). Hidrostal's pumps are working as well on today's sewage as they did on yesterday's, se ng and maintaining the standard with their winning formula of the highest Free Passage Index combined with op mum impeller geome- try. Hidrostal Ltd, Stadium Park, Alto s Lane, Castleford, WF10 5PZ Email: sales@hidrostal.co.uk Website: www.hidrostal.co.uk Hidrostal - Blockage free since 1960 Tel: 01635 550440 Hidrostal design and deliver innova ve pump solu ons with non-clog pumps renowned for handling difficult materials proved to be the optimal solution. Selwood also provided a 200kw inverter control panel with ultrasonic control panel and transducer: installed and programmed by Selwood's own electricians to the requirements of the client, it provided ease of use through- out the application. Phil Ingleheart, Framework Manager for Selwood, said: "Our solution meant that the customer benefitted from an environmentally-friendly auto prime electric pumping regime, saving the cost of running diesel driven equipment. "In addition, this was a friendlier solution to the local environment by eliminating the risks of diesel fuel spills near the river. "By developing very good working relationships at all levels between Bridges Electrical and Selwood and the client Wessex Water, this made it possible for all parties involved to have an input in open discussion and find a robust solution together." Critical response Fin McDermott, Senior Project Manager for Bridges Electrical, said: "Selwood's response time to the enquiry should be commended. Phil Ingleheart was made aware of the criticality of the works and attended a site meeting to review the requirements without delay. "While on site scoping the require- ments, safety was at the forefront of Selwood's surveying process and their specialists completed a site-based risk assessment to ensure access, li‡ing, and security were considered with each step. I was impressed by their commitment to having a full appreciation of the site restrictions and a detailed understand- ing of the pumping requirements." He added: "While on site Bridges and Selwood worked in partnership to install and commission the overpump- ing system. This collaboration speeded up the installation time and prevented delays with refurbishment of the wet well. "Thoughout the rental period, Selwood maintained regular communi- cation to ensure correct performance of their equipment being rented. A difficult job was made simpler with collabora- tion of the Wessex Water team and Framework suppliers." WWT PUMP SUPPLEMENT DECEMBER 2017 7

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