Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Energy management: improving plant lifecycle costs by reducing energy

04.10.2010
Today’s wastewater plants are dealing with aging infrastructure, increasingly stringent regulations, escalating operating and energy costs and budgetary constraints. The availability of funding for plant improvements is often hard to come by, forcing plants to do more with less.

Siemens assists these plants in becoming more sustainable through better energy management. From energy analysis modeling and innovative technologies to automation and financing, Siemens can help put today’s wastewater plants on the road to “net-zero” energy.


This wastewater treatment plant integrates a Siemens Vertical Loop Reactor, TowBro clarifier and a Cannibal system to provide high effluent quality, a reduction in power costs, and less solids wasting. Photo: Siemens AG

“Energy management entails a wide range of solutions, from reducing biosolids, to adding the latest biological treatment processes, high efficiency aeration solutions and control systems, to project financing,” said Lutz Kranz, head of global municipal business for Siemens Water Technologies. “There is no one solution that fits everyone. So, we look at the total project to determine water quality and treatment needs and then recommend options, which may include multiple technologies and automation. We also look to see if we can offer attractive financing options to help get high-return, energy minimization projects moving.”

Siemens can help engineers and owners determine whether they need to improve one specific area or the whole treatment operation to achieve the lowest lifecycle cost, based on what is best for their plant and budget. The long-term goal is to help them get as close as possible to net-zero energy.

Understanding power consumption is a key component to determining technology solutions for wastewater treatment. Siemens’ engineers use a proprietary power calculator tool that takes into account regionalized energy cost trends, anticipated start-up volume, and diurnal flow patterns.

They then run ‘apples to apples’ economic comparisons of the company’s broad range of technologies to determine which ones will save owners the most in energy costs.

Reducing Energy Use

Wastewater treatment historically accounts for about 25% of a municipality’s total energy use. Within the wastewater plant, energy costs are the second largest operations and maintenance expense after labor. Biological processes account for 55% to 70% of this energy use, depending on plant design. This excludes energy and other costs for biosolids dewatering and disposal.

Siemens offers a biological process optimization program that evaluates specific cost factors such as energy use, labor and disposal. The program integrates several key wastewater operations, including biological, solids separation, solids treatment, and controls, to significantly reduce energy costs. For example, a California wastewater treatment plant was able to reduce biosolids production by 70% and the aeration requirements from their aerobic digester by more than 90% with the Cannibal interchange bioreactor system from Siemens.

Another way plants can save on costs is by adding control and telemetry systems that make the whole process more efficient. Siemens can integrate all processes under a unified, easy to operate control system that maximizes the energy efficiency of the treatment technologies and also gives the engineer and owner a single point of responsibility in coordinating the control strategy and operation. As an example, the Link2Site Flex system is a wireless-to-web remote monitoring and control solution that can be added to equipment or processes to optimize operation through reduced maintenance and service costs.

When municipalities need an alternative to traditional funding methods, Siemens Financial Services offers tax-exempt financing, which spreads the cost of capital equipment acquisition over the life of the assets being financed; thus, it fits today’s equipment life cycles, and helps keep technology up to date. This financing can be used to support traditional project delivery models and also alternative project delivery models including equipment lease-purchase, design-build, design-build-finance, and guaranteed savings performance contracts. Guaranteed savings performance contracts are becoming an increasingly popular way for municipal wastewater treatment customers in North America to fund capital improvements that reduce energy use, operation costs and labor. Project costs are paid for in part or in total, with guaranteed savings generated from implementing process improvements for the facility, such as biosolids reduction, methane gas creation and usage, water conservation and reuse, high-efficiency dryer installation, aeration system upgrades and SCADA system improvements.

Innovating for the Future

“The future of energy management lies in being able to close the gap between what we can help customers achieve today and achieving net-zero energy in the future,” says Marc Roehl, Global Product Manager for Biosolids Technologies at Siemens Water Technologies. “We know that the energy value of municipal wastewater is 10 times greater than the energy required to treat it. But we only re-use a fraction of that energy. We’re working to change that.”

Siemens is leading the way in research and development of new technologies or processes that re-use this energy. For example, Mechanically Enhanced Biodrying (MEB) -- a new technology that is in the pilot testing stage -- is being developed as a result of industry requests for a versatile end product that could be used for fertilizer or fuel and that could be created with less energy than standard thermal drying technologies. It also addresses the challenges of biosolids composting when wood waste and other carbon-rich soil amendments are in short supply.

Research on a “green” solution for wastewater treatment is underway at Siemens Water Technologies’ global R&D center in Singapore. The new process, which extracts energy from municipal wastewater, will result in a 30% lower solids yield. Energy content in wastewater is harvested as biogas and converted to energy to create a plant that approaches energy independence. The lower solids volume produced will mean lower handling costs for owners and reduced transportation and management costs. Pilot testing is slated for October 2010, with commercial introduction scheduled for 2012.

Further information about solutions for water treatment is available at:
http://www.siemens.com/water
Cannibal and Link2Site are trademarks of Siemens Water Technologies, its subsidiaries or its affiliates in some countries.
Contact USA:
Karole Colangelo
Corporate Public Relations Manager
Siemens Water Technologies Corp.
847-713-8458 phone
E-mail address karole.colangelo@siemens.com
The Siemens Industry Sector (Erlangen, Germany) is the worldwide leading supplier of environmentally friendly production, transportation, building and lighting technologies. With integrated automation technologies and comprehensive industry-specific solutions, Siemens increases the productivity, efficiency and flexibility of its customers in the fields of industry and infrastructure. The Sector consists of six divisions: Building Technologies, Drive Technologies, Industry Automation, Industry Solutions, Mobility und Osram. With around 207,000 employees worldwide (September 30), Siemens Industry achieved in fiscal year 2009 total sales of approximately €35 billion.

The Siemens Industry Solutions Division (Erlangen, Germany) is one of the world's leading solution and service providers for industrial and infrastructure facilities comprising the business activities of Siemens VAI Metals Technologies, Water Technologies and Industrial Technologies. Activities include engineering and installation, operation and service for the entire life cycle. A wide-ranging portfolio of environmental solutions helps industrial companies to use energy, water and equipment efficiently, reduce emissions and comply with environmental guidelines. With around 31,000 employees worldwide (September 30), Siemens Industry Solutions posted sales of €6.8 billion in fiscal year 2009.

Siemens AG
Corporate Communications and Government Affairs
Wittelsbacherplatz 2, 80333 Munich
Germany
Reference number: IIS201010.727e fp
Media Relations: Stefanie Schiller
Telephone: +49 9131 7-42913
E-mail: stefanie.schiller@siemens.com
Siemens AG
Industry Sector - Industry Solutions Division
Schuhstr. 60, 91052 Erlangen, Germany

Stefanie Schiller | Siemens Industry
Further information:
http://www.siemens.com/industry
http://www.siemens.com/industry-solutions

More articles from Power and Electrical Engineering:

nachricht Laser sensor LAH-G1 - optical distance sensors with measurement value display
15.08.2017 | WayCon Positionsmesstechnik GmbH

nachricht Engineers find better way to detect nanoparticles
14.08.2017 | Washington University in St. Louis

All articles from Power and Electrical Engineering >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Fizzy soda water could be key to clean manufacture of flat wonder material: Graphene

Whether you call it effervescent, fizzy, or sparkling, carbonated water is making a comeback as a beverage. Aside from quenching thirst, researchers at the University of Illinois at Urbana-Champaign have discovered a new use for these "bubbly" concoctions that will have major impact on the manufacturer of the world's thinnest, flattest, and one most useful materials -- graphene.

As graphene's popularity grows as an advanced "wonder" material, the speed and quality at which it can be manufactured will be paramount. With that in mind,...

Im Focus: Exotic quantum states made from light: Physicists create optical “wells” for a super-photon

Physicists at the University of Bonn have managed to create optical hollows and more complex patterns into which the light of a Bose-Einstein condensate flows. The creation of such highly low-loss structures for light is a prerequisite for complex light circuits, such as for quantum information processing for a new generation of computers. The researchers are now presenting their results in the journal Nature Photonics.

Light particles (photons) occur as tiny, indivisible portions. Many thousands of these light portions can be merged to form a single super-photon if they are...

Im Focus: Circular RNA linked to brain function

For the first time, scientists have shown that circular RNA is linked to brain function. When a RNA molecule called Cdr1as was deleted from the genome of mice, the animals had problems filtering out unnecessary information – like patients suffering from neuropsychiatric disorders.

While hundreds of circular RNAs (circRNAs) are abundant in mammalian brains, one big question has remained unanswered: What are they actually good for? In the...

Im Focus: RAVAN CubeSat measures Earth's outgoing energy

An experimental small satellite has successfully collected and delivered data on a key measurement for predicting changes in Earth's climate.

The Radiometer Assessment using Vertically Aligned Nanotubes (RAVAN) CubeSat was launched into low-Earth orbit on Nov. 11, 2016, in order to test new...

Im Focus: Scientists shine new light on the “other high temperature superconductor”

A study led by scientists of the Max Planck Institute for the Structure and Dynamics of Matter (MPSD) at the Center for Free-Electron Laser Science in Hamburg presents evidence of the coexistence of superconductivity and “charge-density-waves” in compounds of the poorly-studied family of bismuthates. This observation opens up new perspectives for a deeper understanding of the phenomenon of high-temperature superconductivity, a topic which is at the core of condensed matter research since more than 30 years. The paper by Nicoletti et al has been published in the PNAS.

Since the beginning of the 20th century, superconductivity had been observed in some metals at temperatures only a few degrees above the absolute zero (minus...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Call for Papers – ICNFT 2018, 5th International Conference on New Forming Technology

16.08.2017 | Event News

Sustainability is the business model of tomorrow

04.08.2017 | Event News

Clash of Realities 2017: Registration now open. International Conference at TH Köln

26.07.2017 | Event News

 
Latest News

A Map of the Cell’s Power Station

18.08.2017 | Life Sciences

Engineering team images tiny quasicrystals as they form

18.08.2017 | Physics and Astronomy

Researchers printed graphene-like materials with inkjet

18.08.2017 | Materials Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>