December 2017 Power & Water Leaders Issue 008 by GineersNow

WAVE #05

Creating Value

through Leading Anaerobic Technology

rocess effluents from the Food and Beverage sector are characterized by highly biodegradable components with a high calorific value. Anaerobic technology plays a key role in the effluent treatment and resource recovery from these industrial effluent streams. Biothane is Veoliaâ&#x20AC;&#x2122;s technology centre for anaerobic technologies and is one of the world's leading companies in the field of biological treatment of industrial wastewater. The principle of anaerobic solutions is the utilization of anaerobic bacteria (biomass) to convert organic pollutants or COD (Chemical Oxygen Demand) into biogas without the presence of oxygen. Particularly adapted to treat medium to high strength wastewater, most of the degraded organic material will be converted into methane, while only a small fraction is used for biomass production. Produced biomass is a resource

that can be sold, at least for the granular sludge based technologies like BiobedÂŽ Advanced EGSB and Biothane Advanced UASB. This is not the case for aerobic treatment processes, which rely on energy-intensive aeration to oxidize organic material, while generating a large quantity of waste biomass which has to be disposed off.

''Anaerobic proven to

be most appropriate in view of Total Cost of Ownership and Sustainability

Biogas can be used for steam and / or electricity generation. Oil or gas fuel can be (partly) replaced by biogas, resulting in operational cost saving. There are many different types of anaerobic processes. Combining this with the uniqueness of each effluent, specific site conditions

and specific requirements, such as future expansion or energy and/or water recovery makes the selection of the optimal treatment technology important.

Anaerobic technology applied for brewery In order to increase its current beer production capacity, the Paulaner brewery (Munich, Germany) decided to expand and relocate their brewery. The nature of brewery effluent is most suitable for anaerobic treatment. This project had a key constraint in terms of available space and the effluent treatment plant had to be installed in a building. Compact, robust, high efficiency, Biobed Advanced. The system is a granular biomass type of treatment process. The granular biomass consists of different bacteria which convert the available organic fraction in the wastewater into valuable biogas. In top of the reactors, patented 3-phase Biobed

as )

rgy (biog

Process effluent

Treatment effluent BIOTHANE

Client

Water reuse

Nutrient recovery

Discharge

RESOURCING THE WORLD

Memthane plant, Arla

Advanced settlers are installed, which separate the biomass from the final effluent and the biogas. The system is designed for 2,800 m⁳/day of wastewater and produces more than 9,000 Nm⁳biogas per day (approx 2.8 MW).

Complete resourcing of waste and effluent streams One of the world’s’ leading confectionary and pet food producers asked Veolia to provide a solution for the treatment of production water effluents and waste streams. The solution had to meet sustainable targets to maximize green energy recovery and water re-use, have no impact on the environment and achieve river discharge conditions. The available footprint was limited. The process concept selected is based on Memthane technology. Memthane combines anaerobic digestion technology with ultra-filtration membranes. The membrane acts as a filter and is a 100% physical separation of anaerobic biomass. Memthane treats process effluent and food waste fractions in one anaerobic treatment process, is compact and achieves high removal efficiencies (> 99%). The biogas is applied in a Combined Heat Power (CHP) unit, producing 2 MW of heat

equivalent to 1 MW of electricity. The Memthane effluent is posttreated by Veolia’s Anitamox process. The application of this technology saved more than 10% in additional energy production. The final stage of the plant is the polishing of a small aerobic posttreatment, by means of the Biosep process. It combines the aerobic treatment with Ultra Filtration membranes. Approximately 67% of the effluent is discharged into the river and 33% is re-used after an upgrade through Veolia’s Reverse Osmosis technology.

SMART plant operation To increase the ease, reliability and effectiveness of the operation of an anaerobic treatment plant, Biogas Manager Control® SMART technology for anaerobic wastewater treatment has been developed. The technology provides a new dimension in operating anaerobic granular wastewater treatment process through 24/7 real-time control. This allows for minimal physical operational attendance. This technology consists of a carefully designed instrumentation and control package. It measures online quality parameters: water flow, COD reduction, biogas production and biomass quality. The system is provided with automated 24/7

back up service - 365 days per year. This innovation is expected to change the regular operation of biological wastewater treatment plants into automated selfregulating plants, which are monitored remotely. �

Summary Biothane has more than 600 references in the field of industrial effluent treatment. The Biothane anaerobic technologies prove to have added value through: • Compact & Small foot print solutions • Production of a green energy source • Low operational cost • Nutrient recovery • High removal efficiency • Minimizing Carbon -and Water footprint at site To select the most appropriate process, Veolia develops design studies to roadmap treatment routes for the sustainable treatment of present process effluents, aiming to optimize energy production and close water cycles. These studies are based on full scale expertise and support by tests executed at Biothane laboratories or Pilot Plants on site.

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EDITORâ&#x20AC;&#x2122;S NOTE

Engr. Alice Hernandez Senior Editor-at-Large

Contents

Power & Water Leaders â&#x20AC;˘ December 2017

years from a pure water company to one with an expanded portfolio in power, including waste to energy, and continues to be committed to providing innovative and effective environmental solutions.

Is technology an enemy or ally? To us, technology has always been an ally. We are always on the lookout for new technologies that can provide synergies with our current businesses and help us stay ahead of the competition. As one of the pioneers in membrane-based water solutions, we are recognised for our proprietary Kristal

ultrafiltration (UF) membranes, which is one of the few UF membrane products to receive certification under NSF (National Sanitation Foundation). We also adopt an open innovative approach to R&D, where we seek to tap on potential research institutes and start-up companies. An example is the latest agreement to collaborate with NEWRI mentioned above.

SOCIAL IMPACT & CSR Describe the CSR philosophy of the company? Hyflux is committed to achieving business excellence while maintaining good social and environmental performance. The Group believes in delivering sustainable long-term returns, and it is fundamental that we focus on developing our people and making a positive impact on the community. Over the years, Hyflux has contributed towards various CSR programmes in Singapore and the region. Activities range from donation drives, educational scholarships, to contributing to clean drinking water access for developing communities overseas. A recent CSR initiative in environmental conservation saw Hyflux leveraging on our technical expertise in water filtration technologies and partnering Wildlife Reserves Singapore in their Go Green for Wildlife campaign. Hyflux developed and installed customised potable water dispensers at the Singapore Zoo to encourage park guests to use refillable bottles. The aim was to reduce generation of plastic waste from single-use bottles and educate the public on recycling. Moving forward, Hyflux will continue to engage the community, and at the same time taking a long-term strategic CSR approach towards improving health with water. With Singaporeâ&#x20AC;&#x2122;s aging population and holding the title of 2nd highest proportion of diabetics, we will possibly explore our CSR direction in such areas.

Power & Water Leaders â&#x20AC;˘ December 2017

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Power & Water Leaders â&#x20AC;˘ December 2017