May 2017 HVACR Leaders Issue 001 by GineersNow

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HVACR Leaders â&#x20AC;˘ May 2017

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CREATING VALUE FOR INDUSTRY

Sponsored Article

Robert Wiseman Dairies Reducing water consumption for a higher economic value and a lower carbon footprint

ne of the major costs in milk processing is water: 1.3 liters of water is needed for every one liter of milk processed. On top of this, 4.2g of chemical oxygen demand (COD) is produced from every liter of milk processed, which is then discharged into wastewater. Robert Wiseman decided to optimize its water and wastewater use by aiming to reduce water consumption across its dairy network by 25% over a five year period. The project was started in their main dairy plant located in Bridgwater, which processes 125 million liters of milk per day. Veolia Water Technologies (VWT) is supporting Robert Wiseman’s project by providing a Dissolved Air Flotation (DAF) system and a membrane bioreactor (MBR) to reduce COD. The quality of the discharged effluent more than meets the environmental requirements. In fact, the quality of the treated effluent was so good that Robert Wiseman wanted to reuse it.

VWT therefore proposed its reverse osmosis (RO) system: MegaROTM to recycle the effluent in order to use it for the CIP (Cleaning in Place) system. The MegaRO technology uses a membrane to remove 99% of residual COD, dissolved salts and bacteria from the treated process wastewater, producing water of equal or better quality than the mains supply.

VWT was one of the early pioneers of MBRs, thanks to its Biosep process, and

using this expertise VWT were able to feed the MBR effluent directly to the MegaRO system with no set-backs. Robert Wiseman became the first dairy industry business in

the UK to install a RO recycle system, enabling them to recover 200m⁳/day of process wastewater. The reverse osmosis process is driven by pressure, but the MegaRO’s low-pressure membranes and high-efficiency pumps make it one of the most energy efficient systems on the market. Low energy use means not only reduced carbon emissions but also low operating costs. Moreover, the quality of the waste concentrate stream from the MegaRO is still good enough for the effluent to be discharged directly into the drainage ditch. "Because the operating cost of the MegaRO is low, the recovered water actually costs less than mains water even after including capital amortization. We expect to get a payback on the £130,000 (approx. €153,000) investment in about two and half years." said Eleanor Walton, Robert Wiseman Dairies' project manager. Although the plant has only been in operation for six months, Walton had enough confidence to be talking to Veolia Water Technologies about a second plant to recycle another 80m⁳/day of wastewater. “We also want to roll out this kind of technology to some of our other sites where they have an expensive sewer discharge” she says. �

Robert Wiseman Dairies operates six dairies, 14 distribution depots and employs more than 4,700 employees. Robert Wiseman Dairies supplies a third of the UK’s milk.

DAIRY RECYCLING 50% OF ITS WASTEWATER

Sponsored Article

IDRAFLOT™

New generation flotation unit Very compact, these units reach a high thickening and clarification grade allowing ultra-flotation with the highest removal efficiency on COD, suspended solids and fat. IDRAFLOT™ is a rectangular compact unit, easily transportable, manufactured entirely in stainless steel. It is provided with lamellar packs, to achieve high treatment capacity compared to its compact size, telescopic level adjustment to optimize the sludge extraction with dry matter up to 8%. IDRAFLOT™ flotation units are protected by three patents. They are intended to assure a perfect mixing of the waste with saturated water and an uniform distribution of the water flow along the entire surface of the unit. The saturation system warrants a complete and even saturation free from the formation of big bubbles. The reactor allows to sample and optimize the desired parameters through a very simple adjustment of chemicals (coagulant/ flocculant). �

IDRAFLOT™ is suitable: • As pretreatment upstream of a biological plant to remove biodegradable fats, suspended solids, fibres, etc. The efficiency is up to 98% with consequent COD drop of between 70% - 80%. • As a clarification plant downstream of a biological plant to remove light sludge particles not captured by secondary decanters. • For tertiary treatment • For sludge thickener • For liquid/solid separation in industrial process plants (pulp & paper, wine, etc.), Idraflot™ is the best solution to potentiate surcharged or undersized plants.

Markets & Applications • Dairy • Slaughterhouses, meat, salami and fat processing • Fishing industry • Canneries • Wine industry • Soft drinks production

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Robert Bagatsing

Editor-In-Chief editor@GineersNow.com

Engr. Alice Hernandez Senior Editor-At-Large

John Vauden

Charity Bagatsing

Raymond Gerard del Valle

Hina Sapra

Engr. Dion Greg Reyes

Marketing and IT Manager

Senior Editor Asia-Paci ic Senior Editor South Asia

Therese Matheren Senior Editor North America

Engr. Randy Williams Guest Editor North America

Amanda Pelletier Guest Editor North America

Senior Editor North America Junior Editor

Junior Editor

Goran Ćulibrk

Engr. Cielo Panda

Anthony Lucero

Engr. Aaron Kesel

Engr. Emmanuel Stalling

Junior Editor

Guest Editor North America

Margaret Banford Guest Editor United Kingdom

Afsana Alam

Video Editor Creative & Layout Guest Editor North America

Patricia Eldridge Guest Editor United Kingdom

Guest Editor United Arab Emirates

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EDITORâ&#x20AC;&#x2122;S NOTE

Engr. Alice Hernandez

Senior Editor-at-Large

Contents

HVACR Leaders â&#x20AC;¢ May 2017

Learn more at monogram.com. 10

HVACR Leaders â&#x20AC;˘ May 2017

HVACR Leaders â&#x20AC;¢ May 2017

130,000

130+

1.07 MILLION

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• Building Products, Technologies & Integrated Solutions • Energy Storage

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