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Monday, 22 June 2009, 17:22 HKT/SGT
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Source: Siemens
Energy Efficient Treatment Process Helps Municipalities Meet New Class 1A Wastewater Standards in China

SIWW, Singapore, June 22, 2009 - (ACN Newswire) - The VertiCel Process, an advanced biological nutrient removal technology from Siemens Water Technologies, has seen increased recognition in the Chinese municipal wastewater market. North China Municipal Engineering Design & Research Institute (NCMEDRI) and Tianjin Municipal Engineering Design & Research Institute (TMEDI) have recently accepted the process technology and selected it for their respective municipal wastewater treatment plant up-grade projects. The energy-efficient wastewater process not only meets stringent effluent requirements of China's new Class 1A standards for nitrogen and phosphorus removal, but is engineered to save space and energy.

The Design Institutes' acceptance was based on recent results of a large-scale, pilot plant in the city of Tianjin. Siemens Water Technologies supplied the VertiCel process to Tianjin Capital Environmental Protection Co., Ltd. (TJCEP) for the retrofit of one of its five existing 90,000 cubic meters per day (CMD) wastewater treatment trains at the Xianyang Road Wastewater Treatment Plant. The full-scale pilot system demonstrated the process as a cost-effective solution for upgrade of existing wastewater treatment infrastructure to meet the new Class 1A standards, the most stringent wastewater discharge requirements for the country's regulatory agency.

In its existing design, the anoxic oxidation process at the Xianyang Road wastewater treatment plant was unable to meet the new Class 1A Total Nitrogen (TN) discharge standards of 15 mg/l. There were several critical requirements for the plant upgrade: timing was critical due to a tight construction schedule; space was limited, so existing infrastructure needed to be used; and normal plant performance was essential during the construction of the new plant. In view of these challenges, the technology upgrade needed to meet both the discharge standards and also be easily retrofitted into the existing plant.

The VertiCel biological nutrient removal system combines mechanical aeration in the anoxic tank with diffused aeration in the aerobic zones optimizing process efficiency. Since the aerated anoxic processes used in the VertiCel process nitrifies throughout the entire process, it can be easily retrofitted into the existing tanks. In addition, the VertiCel system design consumes on average 30% less power when compared to traditional aeration systems. The flexibility of the system design allowed the TJCEP to adopt the process to meet its specific needs, while meeting effluent standards.

The pilot demonstration was completed in June 2009. Siemens was awarded the contract to update the 450,000 CMD Xianyang Road Treatment Plant.

Further information about solutions for water treatment is available at http://www.siemens.com/water

A photo supplements this press release. Please see: http://www.industry.siemens.com/data/presse/pics/IIS200906788.jpg

* VertiCel is a trademark of Siemens Water Technologies and its affiliates in some countries.

About Siemens

The Siemens Industry Sector (Erlangen, Germany) is the worldwide leading supplier of environmentally friendly production, transportation and building 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. In fiscal 2010, which ended on September 30, 2010, revenue from continuing operations of the Industry Sector (excluding Osram) totaled around EU30.2 billion. At the end of September 2010, Siemens Industry Sector had around 164,000 employees worldwide without consideration of Osram. Further information is available on the Internet at: 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 29,000 employees worldwide (September 30), Siemens Industry Solutions posted sales of EU6.0 billion in fiscal year 2010. http://www.siemens.com/industry-solutions.

Contact:
Dr. Rainer Schulze
Telephone: +49 9131 7-44544
E-mail: [email protected]
Siemens AG Industry Sector - Industry Solutions Division
Schuhstr. 60, 91052 Erlangen, Germany


Source: Siemens

Topic: Trade Show or Conference
Sectors: Water, Environment
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