WET News

OCTOBER 2016 WET NEWS 23 Wireless Vibration & Temperature Monitoring The QM42VT1 monitors the machine's health by detecting increases in vibration and temperature. Early detection of any increases allows for planned, preventative maintenance. • Mount to motors, compressors, fans, pumps with a variety of options. • Connect one QM42VT1 to one wireless Node with 3 metre cable. • Set vibration parameters according to ISO 10816 Vibration Severity Chart. • Set a temperature threshold up to 80°C. • Provides local indication, sends signal to a central location and collects data via the Gateway. • Rugged IP67 Zinc Alloy housing. www.turckbanner.co.uk Turck Banner Ltd. Blenheim House, Blenheim Court, Wickford, Essex SS11 8YT Tel: 01268 578888 vibration@turckbanner.co.uk • PREDICTIVE MAINTENANCE • IDEAL FOR PUMP MOTORS • REDUCE DOWNTIME • AVOID FAILURES • DETECT PROBLEMS EARLY Compressed air, gas and vacuum solutions www.aerzen.co.uk +44(0) 208 502 8100 sales@aerzen.co.uk RELIABILITY EFFICIENCY SOLUTIONS EXPERIENCE INNOVATION THE CONCEPT • The Amtreat technology deals with the challenge of the high strength liquors produced by advanced digestion • Amtreat systems can be retrofitted to existing plants • Thermal hydrolysis alongside the anaerobic digestion process enables more gas to be produced NEED TO KNOW 1 Restrictions on ammonia levels for treated effluent are becoming increasingly tight 2 High strength liquor created by plants using thermal hydrolysis can have ammonia levels as high as 2,500mg/l 3 As loads increase and plants reach full capacity their ability to deal with high levels of ammonia is reduced THE VERDICT "With an increased emphasis on energy production expected in AMP7 it is more important than ever that anaerobic digestion is managed well" Bob Hastings, business development manager, ACWA hydrolysis plant built using Cambi technology. ACWA has also worked extensively with Anglian Water, providing additional high strength effluent treatment to complement its heating, pasteurisation and hydrolysis (HpH) plants, which also produce streams with high levels of ammonia. ACWA built its first liquor treatment system at Cliff Quay in Ipswich in 1998. Since then the plant has experienced a significant increase in load. ACWA modified and extended the existing liquor treatment plant in 2013, while it was still operational. ACWA also built an Amtreat plant utilising some existing assets at Anglian Water's plant at Basildon in 2013, as part of a project to create a regional advanced anaerobic digestion sludge centre. In Colchester, ACWA installed a new Amtreat system into a new advanced digestion plant. This is the biggest of the three projects for Anglian Water, processing 580m 3 a day of sludge with ammonia levels of 1,534mg/l. The final effluent quality achieved was in excess of 98% ammonia removal rate. Investment crucial Installing new anaerobic digestion systems is a major investment for utilities, but one which can pay off in terms of reduced energy costs and additional sources of income. The long-term savings that can be made fit the criteria for the newly introduced totex system accounting, which balances capital investment with reduced long term maintenance and running costs. However, the benefits of investing in anaerobic digestion can be undermined if the difficulties of dealing with high strength liquors is underestimated. As loads increase and plants reach their full capacity their ability to deal with high levels of ammonia is reduced. Even plants which have stayed within their consent levels can run into problems when they expand or are expected to process additional levels of sludge imported from other areas. ACWA can retrofit the Amtreat system to existing plants but a far better answer is to install additional ammonia treatment when building a new advanced digestion plant. Incorporating the Amtreat system into an anaerobic digestion plant means a more stable and predictable process, lower energy bills and less danger of breaking consent levels. With an increased emphasis on energy production expected in AMP7 it is more important than ever that anaerobic digestion is managed well and that everything is done to make the process as efficient and as stable as possible. Bob Hastings is business development manager at ACWA. Amtreat can be retrofitted to existing plants

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