May | June 2013Ultraviolet water disinfection for fish farmsand hatcheriesThe International magazine for the aquaculture f...
www.oj-hojtryk.dkDie and roll re-working machinesO&J Højtryk A/SØrnevej 1, DK-6705Esbjerg ØCVR.: 73 66 86 11Phone: +45 75 ...
Aquaculture	 is	 a	 growing	 and	increasingly	important	industry	in	many	parts	of	the	world,	including	Scotland,	 Chile,	 ...
Innovations for a better world.Bühler AG, Feed & Biomass, CH-9240 Uzwil, Switzerland, T +41 71 955 11 11, F +41 71 955 28 ...
other	treatment	methods,	UV	also	avoids	the	 expense	 of	 complex	 monitoring	 sys-tems	 required	 for	 adding	 and	 remov...
UV applications in aquacultureThe	applications	for	UV	include	treatment	of	water	in	hatcheries,	shellfish	purging	tanks	an...
REALBREWERS’YEAST“Made inGermany”For Leiber`s specialty yeast products,“Made in Germany”is a seal of quality.Multibiotic e...
www.aquafeed.co.ukLINKS•	 See the full issue•	 Visit the International Aquafeed website•	 Contact the International Aquafe...
Ultraviolet water disinfection for fish farms and hatcheries
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Ultraviolet water disinfection for fish farms and hatcheries

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Aquaculture is a growing and increasingly important industry in many parts of the world, including Scotland, Chile, Norway, Greece and Turkey. It helps to sustain economic growth in rural and coastal communities which are often isolated from the more developed and industrialised areas of these countries.

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Ultraviolet water disinfection for fish farms and hatcheries

  1. 1. May | June 2013Ultraviolet water disinfection for fish farmsand hatcheriesThe International magazine for the aquaculture feed industryInternational Aquafeed is published six times a year by Perendale Publishers Ltd of the United Kingdom.All data is published in good faith, based on information received, and while every care is taken to prevent inaccuracies,the publishers accept no liability for any errors or omissions or for the consequences of action taken on the basis ofinformation published.©Copyright 2013 Perendale Publishers Ltd.All rights reserved.No part of this publication may be reproduced in any formor by any means without prior permission of the copyright owner. Printed by Perendale Publishers Ltd. ISSN: 1464-0058INCORPORATINGf ish farming technolog y
  2. 2. www.oj-hojtryk.dkDie and roll re-working machinesO&J Højtryk A/SØrnevej 1, DK-6705Esbjerg ØCVR.: 73 66 86 11Phone: +45 75 14 22 55Fax: +45 82 28 91 41mail: info@oj-hojtryk.dkO&J HØJTRYK A/S endeavours to be a powerful, vigorousand energetic company. With our customers needs and theimmediate environment as our point of departure, we wantto be a trendsetter in our core area of business - MechanicalEngineering - Re-working of Dies and Rollers for themanufacture of Feedstuffs and Biopellets, as well as the saleand delivery of wearing parts in connectionwith Roller Re-working - as well as toremain open to new initiatives andbusiness opportunities.O&J HØJTRYK A/S has drawn up astrategy plan setting out guidelines forhow we as an organisation must conductand develop ourselves in order to makeour mark, not just in the present, but also in thefuture.O&J HØJTRYK A/S must achieve success by adaptingto the conditions of the market more quicklyand efficiently than our competitors. As a serviceorganisation we must, in relation to our customers,attach great importance to our own vitality and efficiencyby constantly living up to the ever-growing demands made onthe services we provide.
  3. 3. Aquaculture is a growing and increasingly important industry in many parts of the world, including Scotland, Chile, Norway, Greece and Turkey. It helps to sustain economic growth in rural and coastal communities which are often isolated from the more developed and industrialised areas of these countries.The modern aquaculture industry faces a number of issues:DiseaseHigh rates of water extraction and increased reliance on recirculated water can lead to poor water quality, resulting in increased outbreaks of viral, bacterial and parasitic fish diseases which can decimate fish stocks. Due to the intensive nature of fish farming, fish stock is also highly susceptible to infection from natural fish populations in the feed water to the farm. RegulationFish reared and released back into the wild, as well as those endorsed by the regulatory bodies such as the UK’s Marine Stewardship Council, must be disease-free.Water qualityTo minimise the chance of infection and disease, the water used in fish farms and hatcheries needs to be of a minimum quality. Ensuring this quality is not easy – chemical treatment is not appropriate as it harms the fish and cannot be released into open waters.To ensure water quality and to break the infection cycle between fish farms and natu-ral fish populations, a disinfection system is needed to treat water entering and circulating within fish farms.The advantages ofUV disinfectionUltraviolet (UV) is ideally suited for treating incoming and recirculated water in fish farms and hatcheries as it uses no chemicals and does not create by-products which would harm the fish stock, or other aquatic life, on discharge. Unlike Ultravioletwater disinfection for fishfarms and hatcheriesby Halim Mirza, sales manager, Hanovia, United KingdomCASE STUDYCultivos Huacamalal Ltda., ChileCultivos Huacamalal Ltda. of Chile uses a Hanovia UV disinfection system for its salmon hatchery in Rio Ignao in the south of the country. The UV system is part of a US$1.1 million water recir-culation and effluent treatment system provided by Atlantech Chile Ltda. of Puerto Montt, Chile.The UV unit treats well water used for make-up supply in the water recirculation system to control against Infectious Pancreatic Necrosis (IPN) RNA-virus. IPN is found in wild salmon populations on the Pacific coasts of both North and South America and can cause severe mortality (up to 80%) in fish up to two years old. It is a common disease in hatcheries and is also capable of transmitting epizootic conditions back to wild populations.Chile is one of the three major salm-on farming countries in the world, along with Norway and Scotland. Cultivos Huacamalal is a new player in the Chilean salmon aquaculture industry. The company was formed by a number of experienced partners in the fish production and shipbuilding industry in Chile and has signed an agreement to supply product to one of the largest salmon exporters in the country.24 | InternatIonal AquAFeed | May-June 2013FEATURE
  4. 4. Innovations for a better world.Bühler AG, Feed & Biomass, CH-9240 Uzwil, Switzerland, T +41 71 955 11 11, F +41 71 955 28 96fu.buz@buhlergroup.com, www.buhlergroup.comFatten up your bottom line. Bühler high-performance animal and aqua feed productionsystems are used by leading companies around the world. These producers know theycan rely not just on the technology itself, but also on the support that accompanies it. Aservice combining local presence with global expertise both lowers feed mill operatingcosts and increases capacity utilization. To find out more, visit www.buhlergroup.com
  5. 5. other treatment methods, UV also avoids the expense of complex monitoring sys-tems required for adding and removing chemicals before the water reaches the fish. In addition, it does not alter the pH of the water. In fact, UV is now widely regarded to be the most effective and economical disinfection technique for use in fish aquaculture. Greig Seafood, CanadaMay-June 2013 | InternatIonal AquAFeed | 25FEATUREwww.evonik.com/feed-additives|feed-additives@evonik.comAMINOCarp® –Improve your feed formulation.Visit us atVIV Turkey, Istanbul13.-15.06.2013Booth A50
  6. 6. UV applications in aquacultureThe applications for UV include treatment of water in hatcheries, shellfish purging tanks and fry rearing tanks. It is also used in fish processing plants and well boats. UV is even used to disinfect recirculation water in marine parks and aquaria.Some considerationsWhen installing UV systems, operators need to be aware of which viruses, bacteria or parasites are posing a problem and size the UV systems accordingly. Hanovia usually recommends a UV dose of between 120-150mJ/cm2, but the final dose always depends on a number of factors, including whether the water is single-pass or recirculated. Water needs to be treated at all stages in the process, from the egg stage right through to full maturityAll effluent water from hatcheries, process-ing plants and well boats must also be treated so as to protect the environment and stop the possible transmission of disease to wild fish populationsUV technologyUV technology is surprisingly simple to install and use. A UV disinfection chamber can usually be retrofitted to existing pipework and circulation systems with minimum disruption to the process. All controls are automatic and mainte-nance of the systems is usually restricted to the replacement of the UV lamp every 12-18 months, depending on use. This is a simple operation that can be carried out by on-site staff. An automatic or manual wiper fitted over the quartz sleeve surrounding the UV lamp prevents the build-up of any deposits, ensuring maximum levels of UV irradiation at all times.A significant feature of modern UV sys-tems is the control mechanism which displays a range of useful functions such as flow rate, UV dose and intensity. The systems are usually capable of logging up to one year’s performance data, which can be downloaded to a PC through an RS232 port. Linked into a central computer, the control panel can also be operated remotely, and allows the system to operate around the clock.About HanoviaTo date Hanovia has installed over 300 aquaculture systems in 14 countries around the world. Applications include water treat-ment in hatcheries, fish farms (salmon, sea bream and sea bass) shellfish depuration tanks and fry rearing tanks as well as treating re-circulation water in marine parks and aquaria.Based in the UK with offices in Beijing and Shanghai and a worldwide network of distributors, Hanovia is a world leader in UV disinfection technology with over 85 years’ experience in the design, development, manufacture and distribution of UV systems worldwide. The company is a subsidiary of Halma plc. More InforMatIon:Gunvinder Bhogal, marketing communicationsmanagerTel: +44 1753 515300Fax: +44 1753 515301Email: gunvinder.bhogal@hanovia.comsales@hanovia.comWebsite: www.hanovia.comCASE STUDYLoch Fyne OystersLtd, ScotlandLoch Fyne Oysters Ltd in Scotland is using two Hanovia UV disinfection systems for its oyster farm in Loch Fyne, Cairndow, Scotland. The UV systems, which were installed by Barr and Wray, destroy harmful E.Coli bacteria from its oyster and mussel depuration tanks. Each UV chamber treats up to 150 m3 water per hour.According to a spokesperson from Loch Fyne Oysters, “The Hanovia units were recommended to us by Barr and Wray because of their 99.99% log reduction of E.Coli, their robust, stainless steel construction, their ease of installa-tion and easy maintenance – including easy UV lamp replacement and daily cleaning with a manual wiper – and low running costs. We also find the digital run-time read-out very useful.”Loch Fyne, Scotland26 | InternatIonal AquAFeed | May-June 2013FEATURE
  7. 7. REALBREWERS’YEAST“Made inGermany”For Leiber`s specialty yeast products,“Made in Germany”is a seal of quality.Multibiotic effect of Leiber yeast - vitality, health and performance for fish.Leiber GmbH · Hafenstraße 24, 49565 Bramsche, Germany · Tel +49 (0) 5461 9303-0 · Fax +49 (0) 5461 9303-28 · www.leibergmbh.de · info@leibergmbh.deTHE SPECIAL WORLD OFLEIBER YEAST...www.leibergmbh.de
  8. 8. www.aquafeed.co.ukLINKS• See the full issue• Visit the International Aquafeed website• Contact the International Aquafeed Team• Subscribe to International AquafeedThey are what they eatEnhancing the nutritional value of live feedswith microalgaeControlling mycotoxins withbindersUltravioletwater disinfection for fishfarms and hatcheriesNiacin– one of the key B vitamins for sustaininghealthy fish growth and productionVolume 16 Issue 3 2013 - mAY | Ju NeINCORPORATINGfIsh fARmING TeChNOlOGyThis digital re-print is part of the May | June 2013 edition of InternationalAquafeed magazine. Content from the magazine is available to view free-of-charge, both as a fullonline magazine on our website, and as an archive of individual features onthe docstoc website.Please click here to view our other publications on www.docstoc.com.To purchase a paper copy of the magazine, or to subscribe to the paperedition please contact our Circulation and Subscriptions Manager on the linkabove. INFORMATION FOR ADVERTISERS - CLICK HERE

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