May 2017 Construction Leaders Issue 002

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CREATING VALUE FOR INDUSTRY

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Sponsored Article

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

O

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

GINEERSNOW TEAM Ems Bagatsing

Sales & Marketing Director Ems@LincolnMartin.com

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

Publisher GineersNow Inc.

Global Sales Of!ice Lincoln Martin FZE

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Disclaimer: The publishers regret that they cannot accept liability for error or omissions contained in this publication, however caused. The opinions and views contained in this publication are not necessarily those of the publishers.

Readers are advised to seek specialist advice before acting on information contained in this publication, which is provided for general use and may not be appropriate for the readers' particular circumstances.

The Copyright Law of the United States of America, Chapter 1, Subject 107, called the “Limitations on exclusive rights: Fair use” states that, “Notwithstanding the provisions of sections 106 and 106A, the fair use of a copyrighted work, including such use by reproduction in copies or phonorecords or by any other means speci!ied by that section, for purposes such as criticism, comment, news reporting, teaching (including multiple copies for classroom use), scholarship, or research, is not an infringement of copyright. In determining whether the use made of a work in any particular case is a fair use the factors to be considered shall include— (1) the purpose and character of the use, including whether such use is of a commercial nature or is for nonpro!it educational purposes; (2) the nature of the copyrighted work; (3) the amount and substantiality of the portion used in relation to the copyrighted work as a whole; and (4) the effect of the use upon the potential market for or value of the copyrighted work.”

The construction industry has gone a long way already. With today’s modern technology, it’s no longer about constructing a simple building anymore. Nowadays, several companies compete in building better smart cities, using 3D printing to turn plastic bottles into sturdy structures and designing skyscrapers that hang from an asteroid. The evolution of the construction industry has taken men to great heights and the world has yet to see the next big “new” thing.

EDITOR’S NOTE

In this month’s issue, GineersNow: Construction Leaders features Arcadis. Known for its famous projects such as the Burj Khalifa and Downtown Dubai, the Atlantis Hotel on The Palm Dubai and the Museum of Islamic Arts, the company is the leading global natural and built asset design and consultancy firm located in the Middle East. Learn more about how using drones has helped Arcadis drive innovation to its engineering and construction.

We have also included special features about new technologies which make construction faster and easier. Find out more about the world’s largest entertainment city that will be built on Saudi, the durability of polymer modified binders in asphalt pavements and the world’s largest e-waste recycling plant that will be built in Dubai.

Learn more about the need of construction sites to adopt mobile technology and what major issues the industry is facing this year.

As part of our commitment to help engineers all over the globe to become better leaders in their field, we have included in this issue our best engineering leadership articles. From making engineers happier at work to finding out why they quit their jobs or haven’t fulfilled their potentials, we want our readers to be the best at their work and in every other aspects in their lives.

So sit back and learn something new in this industry today. Keep up with the latest trends on the Construction Industry with GineersNow: Construction Leaders.

Engr. Alice Hernandez Senior Editor-at-Large

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