Water and Effluent Treatment Magazine
Issue link: https://read.utilityweek.co.uk/i/411335
The coarse screens protect and reduce the solids loading onto the 6mm escalator screens, which have one of the highest screenings capture ratios on the market of 84% collaboration kind continuous battery powered turbidity for network monitoring t. 0800 8046 continuous battery powered turbidity for network monitoring t. 0800 8046 062 www.atiuk.com If you require further information on any of our products pl ease email enquiries@talis-group.com TALIS UK manufactures and supplies a comprehensive range of valves, hydrants and fittings from 16mm to 3600mm for up to 160 bar applications. We can offer a design and after sales service package. Please visit talis-uk.com for more information. Cost effective solutions from TALIS UK Your Choice in Waterflow Control Precise Engineering Complete Solutions www.talis-uk.com Your Choice in Waterflow Control TALIS UK Rückgewinnung Pumpwerk Rohrnetze Wassergewinnung Speicher Bewässerung Talsperre Aufbereitung Industrie Kraftwerk Klärwerk Gas Rückgewinnung Pumpwerk Rohrnetze Wassergewinnung Speicher Bewässerung Talsperre Aufbereitung Industrie Kraftwerk Klärwerk Gas Rückgewinnung Pumpwerk Rohrnetze Wassergewinnung Speicher Bewässerung Talsperre Aufbereitung Industrie Kraftwerk Klärwerk Gas Rückgewinnung Pumpwerk Rohrnetze Wassergewinnung Speicher Bewässerung Talsperre Aufbereitung Industrie Kraftwerk Klärwerk Gas Rückgewinnung Pumpwerk Rohrnetze Wassergewinnung Speicher Bewässerung Talsperre Aufbereitung Industrie Kraftwerk Klärwerk Gas Rückgewinnung Pumpwerk Rohrnetze Wassergewinnung Speicher Bewässerung Talsperre Aufbereitung Industrie Kraftwerk Klärwerk Gas @TalisUK 2,100l/s peak flow per screen (5-off duty screens and one standby); WAP SL max through- put of 15m3/hour per unit (Duty / Standby – Coarse Screens and Duty / Standby Fine Screens); Launder Channels for a flow rate of 25l/s. To keep the existing works active, a phased installation of new equipment was essential, and the equipment had to also fit within the existing very tight sites hydraulic constraints. Solution The equipment was deliv- ered directly to site, where Huber's regional office, based in Portadown, took over the mechanical installation and commissioning. The use of local resource proved invaluable and ensured that the project moved forward and any issues were quickly resolved. In October 2013, the equipment was suc- cessfully commissioned a•er a 28-day testing regime. Capture rate Peter Neeson, operations man- ager from NI Water, says: "The reliability of the Huber equip- ment has been excellent giving just minor teething problems which have been addressed and sorted effectively by both Huber and main contractor Graham Construction. "The screening capture rate, by both the coarse and fine sets of screens is excellent, evi- dent now by how quickly the skips fill, and the signifi- cant reduction in sewage-related debris downstream of the screens. This has meant less pumping and treatment process problems for myself and break downs for NI Water M&E." He said that prior to the new screening system being installed the old one used to pass forward into the works large amounts of sewage debris which o•en settled out with the sludges. "This issue drew complaints of pump blockages etc. from the sludge incinerator team (previously NIW now Veolia) and NIW M&E. Pump blockages are rarely an issue now on site." Screening handing has been vastly improved by the installa- tion of the Huber WAPs and launder trough system. It replaced a screw conveyor and compaction units which were housed in a purpose built build- ing, this made the maintenance of the old units a dirty and sometimes dangerous job because of space and lighting issues. Neeson says: "The WAPs seem to be well capable of deal- ing with plug flows of screen- ings that occur from time to time. Belfast WwTW catchment is fairly flat, so in wet weather screenings can arrive at the works on mass a•er a dry spell. The new WAP's seem to be very good at dealing with this." Huber regional sales man- ager Fred Neumann adds: "The complexities of this major pro- ject were successfully mini- mised and overcome, due to early engagement with NIW operations project manager, consultants, main contractor and their subcontractor. Instal- lation phasing and commission- ing problems had minimum impact on the project delivery. This was down to the integrity and commitment of the local Huber Technology installation team." Kieran Hagan, regional field manager for Huber Technology, Ireland, comments: "Having a strong local presence with a dedicated team and skilled tech- nicians able to deliver this to a consistent high standard of workmanship ensures the pro- ject is delivered on time with the highest quality to the client." n