HITACHI : Approach on Global Environment Preservation by Wastewater Treatment

	Volume 57 Number 5 September 2008
	Special Issue

AUTHORS

Hiroki Nakamura, Dr. Eng.	Environmental and Industrial Plant Dept., Matsudo Research Lab., Research and Development Headquarters, Hitachi Plant Technologies, Ltd.
Makoto Onishi	Environmental and Industrial Plant Dept., Matsudo Research Lab., Research and Development Headquarters, Hitachi Plant Technologies, Ltd.
Kiyokazu Takemura	Environmental and Industrial Plant Dept., Matsudo Research Lab., Research and Development Headquarters, Hitachi Plant Technologies, Ltd.
Mitsuo Kunii	Business Planning Headquarters, Environmental Systems Business Headquarters, Hitachi Plant Technologies, Ltd.

OVERVIEW

The Hitachi Group is developing three key wastewater-treatment technologies, which contribute to global environmental protection, and promoting their deployment around the world. As for the first technology, a nitrogen-removal system using entrapped immobilized microorganisms, making use of its excellent nitrification performance, its application to treatment of household sewage and industrial effluent in China is targeted. In regard to the second technology, an MBR system, the MBR water-recycling business in the water-resource-poor Middle East, where household sewage is considered a precious water resource, is currently expanding. As for the third technology, a ballast-water treatment system, maritime environments are conserved through commercialization of a flocculation and magnetic-separation method (which takes environmental preservation into account by not using disinfection agents) in order to prevent disruption of eco-systems and bacterial epidemics in the oceans of the world.

TO READ THIS ARTICLE

See PDF file for details(PDFformat, r2008_05_107.pdf, 858KB)

CONTACT FOR INQUIRY

Matsudo Research Laboratory,
Hitachi Plant Technologies, Ltd.
TEL: +81-473-61-6103
FAX: +81-473-61-5296

RELEVANT SITE

Hitachi Plant Technologies, Ltd.

KEYWORDS

wastewater treatment, immobilized microorganisms, membrane technology, ballast-water treatment, magnetic isolation technology

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