Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

New Siemens study on biodrying: end-product can be used as fertilizer or fuel

13.09.2010
Industry requests for a versatile biosolids end-product that could be produced using less energy fueled Siemens Water Technologies to conduct a pilot study focusing on Mechanically Enhanced Biodrying (MEB) as a new application of the existing Siemens IPS composting technology.

The study illustrated how the IPS system serves a dual purpose by biodrying materials for fertilizer or fuel while using minimal energy expenditure, compared to conventional drying methods. It was determined that an automated, agitated bin composting technology could achieve 65 percent solids concentration (35 percent moisture) in biosolids by using only the finished dried product as the amendment.


An IPS composting system agitator similar to the technology used in the MEB pilot studies, where 65 percent solids concentration (35 percent moisture) was achieved in biosolids, using only the finished dried product as the amendment. Picture: Siemens AG

In the pilot study, the IPS Composting System was found to consistently dry to 65 percent solids with an in-feed mixture of at least 40 percent solids, comprised of dewatered cake (of at least 20 percent solids) and recycled dried product discharged from the IPS system (of at least 60 percent). Overall, the solids concentration increased an average of approximately one percent per day and as much as two percent per day in the agitated bin system when minimum in-feed conditions were met. Summer and winter studies focused on such variables as ambient air temperature, feedstock properties, turning frequency, bin retention time, and process aeration cycles.

The MEB process uses the biosolids’ own biological characteristics to heat the material and, in doing so, to evaporate some of the moisture. Aeration and agitation from the IPS equipment further enhance the biological process drying. The IPS biodrying process is more cost effective and energy efficient than thermal drying, and the resultant end-product can be used as fertilizer or feedstock for incineration. Creating a biosolids fuel product with an energy-conservative process makes MEB an ideal companion for conversion technologies. It was also found that applying similar MEB principles to biosolids composting addresses the challenge confronting plants when wood waste and other carbon-rich amendments are in short supply. Further research is looking at also possibly using the process before gasification.

A versatile system like the MEB that is capable of both composting and biodrying ensures WWTPs of a long-term flexible solution. On the one hand, some EU countries such as Austria, Denmark, Germany, the Netherlands, and Slovenia have stricter country-specific regulations regarding the agricultural use of biosolids by significantly limiting the maximum annual application of heavy metals. Where agricultural utilization is restricted, incineration is often selected as the sludge or biosolids management option. Therefore, biodrying or MEB would be an appropriate step before incineration. On the other hand, roughly 38 percent of EU countries land-apply treated biosolids, with France, Ireland, Spain, and the UK topping that list. Many of these countries have found composting to be a more socially acceptable, energy-efficient, and environmentally-friendly alternative to landfilling or incineration.

Besides municipal WWTPs, the IPS system is also applicable to other industries: the UK Department of Environment, Food and Rural Affairs (DEFRA) recently approved the IPS system, to be considered a "closed reactor" under Regulation (EC) 1774/2002 to compost catering wastes. The United Kingdom has composting guidelines that are more stringent than most of the other EU countries because of concerns over swine vesicular disease, foot-and-mouth disease, and other animal-related infections.

Contact USA:
Ms. Karole Colangelo
Corporate Public Relations Manager
Siemens Water Technologies Corp.
Hoffman Estates, IL
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. http://www.siemens.com/industry
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.

Further information and downloads at: http://www.siemens.com/industry-solutions«

Stefanie Schiller | Siemens Industry
Further information:
http://www.siemens.com/water

More articles from Trade Fair News:

nachricht Solar Collectors from Ultra-High Performance Concrete Combine Energy Efficiency and Aesthetics
16.01.2017 | Fraunhofer-Institut für Solare Energiesysteme ISE

nachricht Energy-Efficient Building Operation: Monitoring Platform MONDAS Identifies Energy-Saving Potential
16.01.2017 | Fraunhofer-Institut für Solare Energiesysteme ISE

All articles from Trade Fair News >>>

The most recent press releases about innovation >>>

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

Im Focus: Traffic jam in empty space

New success for Konstanz physicists in studying the quantum vacuum

An important step towards a completely new experimental access to quantum physics has been made at University of Konstanz. The team of scientists headed by...

Im Focus: How gut bacteria can make us ill

HZI researchers decipher infection mechanisms of Yersinia and immune responses of the host

Yersiniae cause severe intestinal infections. Studies using Yersinia pseudotuberculosis as a model organism aim to elucidate the infection mechanisms of these...

Im Focus: Interfacial Superconductivity: Magnetic and superconducting order revealed simultaneously

Researchers from the University of Hamburg in Germany, in collaboration with colleagues from the University of Aarhus in Denmark, have synthesized a new superconducting material by growing a few layers of an antiferromagnetic transition-metal chalcogenide on a bismuth-based topological insulator, both being non-superconducting materials.

While superconductivity and magnetism are generally believed to be mutually exclusive, surprisingly, in this new material, superconducting correlations...

Im Focus: Studying fundamental particles in materials

Laser-driving of semimetals allows creating novel quasiparticle states within condensed matter systems and switching between different states on ultrafast time scales

Studying properties of fundamental particles in condensed matter systems is a promising approach to quantum field theory. Quasiparticles offer the opportunity...

Im Focus: Designing Architecture with Solar Building Envelopes

Among the general public, solar thermal energy is currently associated with dark blue, rectangular collectors on building roofs. Technologies are needed for aesthetically high quality architecture which offer the architect more room for manoeuvre when it comes to low- and plus-energy buildings. With the “ArKol” project, researchers at Fraunhofer ISE together with partners are currently developing two façade collectors for solar thermal energy generation, which permit a high degree of design flexibility: a strip collector for opaque façade sections and a solar thermal blind for transparent sections. The current state of the two developments will be presented at the BAU 2017 trade fair.

As part of the “ArKol – development of architecturally highly integrated façade collectors with heat pipes” project, Fraunhofer ISE together with its partners...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Sustainable Water use in Agriculture in Eastern Europe and Central Asia

19.01.2017 | Event News

12V, 48V, high-voltage – trends in E/E automotive architecture

10.01.2017 | Event News

2nd Conference on Non-Textual Information on 10 and 11 May 2017 in Hannover

09.01.2017 | Event News

 
Latest News

Helmholtz International Fellow Award for Sarah Amalia Teichmann

20.01.2017 | Awards Funding

An innovative high-performance material: biofibers made from green lacewing silk

20.01.2017 | Materials Sciences

Ion treatments for cardiac arrhythmia — Non-invasive alternative to catheter-based surgery

20.01.2017 | Life Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>