Energy and Environment related technologies and solutions:

Movable self-cleaning water treatment facilities

Company data

Name	Nihon Genryo Co., Ltd.
Address	NKF Kawasaki Bldg 1-2 Higashida-cho, Kawasaki-ku Kawasaki-shi Kanagawa 210-0005
Capital	50 000 million JPY
Contact person	Yoshimi Onda +81-44-222-5555/ +81-44-222-5556(FAX) onda@genryo.co.jp
Number of employees	60
Date of company foundation	December 19th, 1939
The type of business	Manufacture filter media for water supply

International operation

Number of employees for international operation(including overseas operation, if any)		3
Overseas offices	City , Country	Name of company
	Hannover, Germany	Ecotron GmbH
	Gyeonggi-do, Korea	Hoimyung Corp
	Milano, Italy	Amitec. s. r. l
	Taipei, Taiwan	Today’s Instruments Co., Ltd.

Modality of business transaction

Mark, if applicable	Mode of business	Brief description
	Direct Investment
	Partnership	Looking for business partner with potential for local assembly
	Export of product	Directly or through our distributor
	Licensing of patent

Technology data

Name of technology	Movable self-cleaning water treatment facilities
Field of the technology	Major category: Prevention and destruction of pollution	Sub-category: Industrial waste water, Sewage, Land water, Soil and underground water
Conceivable applications	Filtration to supply drinking water and/or process water from river water, pond water, underground water, etc. Filtration to be able to be dischargeable or reusable from industrial waste water. The facilities are movable. One set of facilities can be used for several applications around. In addition, it is easy to use for recovery from disaster, typhoon and earthquake due to its movability.
Performance	The filtration system in the facilities is an advanced technology. The filtration system has an ability of self-cleaning: called "Saito Tank". Furthermore, the facilities can be easily moved. It takes only 3 hours to set the "mobile" Saito Tank. The Mobile Saito Tank is sand filter tank which can remove suspended substances in the water. Though conventional filter tank must replace the sand media periodically, the Mobile Saito Tank does not have to replace media filter tank due to the self-cleaning system. It leads to the reduction of the maintenance cost and operation cost and stabilization of the filtered water quality.
Technical maturity Past record of introduction	Sand filtration method is conventional filter system. We developed movable self-cleaning system Mobile Saito washing system in March 2005. We delivered 6 devices to several Japanese cities and Korea. Examples of Miyazaki and Iwate for disaster operation are attached.
Competitive advantage	Movable: Depends on water quality but you can use the same Mobile Saito Tank for several cities. Reducing maintenance and operation cost: Because the Mobile Saito Tank has a self-cleaning system, no need to replace filter media. Water quality: stabilization of the filtered water quality due to the self-cleaning system. Mobile Saito Tank wash filter media by kneading before backwash, it helps to reduce backwash time. Which means you can reduce backwash water volume. Filtration capacity can be enhanced by customized media.
Conceivable risk	If waste water contains heavy metals, e.g., mine effluent, the heavy metals have to be removed before processing in this technology.
Information on patent related to this technology (if applicable)	We hold some patents related "Saito Washing system" on 33 countries.Ex. Japanese patent No. 3020452, 3020464, 3919098 etc.

Schematic illustration of the technology

The Mobile Saito Tank is very small, resulted in advantage of movability.

Specifications of several scales of the tank are shown below.

The Tank consists of basic units and options shown in the following tables.

Self-cleaning system "Saito Washing System" is based on the following mechanism.

Furthermore, it works really well after disasters.