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Last Updated:
December 11, 2014


Hybrid Lagoon System (“HLS”)

HLS's Carrier and Reference

Our Organization


<Last Updated>

December 11, 2014:
Thank you for your interest RERA and HLS exhibited in Pollutec Lyon 2014 on December 2-5. Please see our special page for our latest brochure and poster images at HERE.

INVITATION of New Strategic de-nitrification treatment technology, and new proposals transfer from us.

Dear All

In 1976, Dr Jun Ui and me established Rural Environment Research Association (“RERA”), a NGO specialized in environment, for researching and developing a new waste water treatment technology to resolve increasingly serious environmental problems. Since its inception, RERA has developed the "Hybrid Lagoon System" (“HLS”) and has put HLS into practical use in several areas.

HLS is a latest advanced waste water treatment technology with an activated sludge treatment and some high technologies. HLS enhances treatment capacity of activated sludge more than other waste water treatment technologies and even automatizes all of such treatment. HLS gives an advanced waste water treatment system high functionality and social cost benefit. HLS also gives you a solution regarding waste water treatment in several areas such as water recycling with advanced waste water treatment. HLS is based on patents in the United States and Japan with lots of “know-how.”

HLS can,

  1. remove 90% of nitrogen, that is difficult to be removed from waste water by other waste water treatment technologies,

  2. save 50% (0.20.3m3/Kwh) of energy needed for advanced waste water treatment,

  3. decrease 50% of surplus sludge produced with advanced waste water treatment,

  4. meet requirements for the highest quality of waste water treatments with some national regulations regarding waste water treatment such as the Discharge standard of pollutants for municipal wastewater treatment plant (GB/T 18918-2002),

  5. improve environments of closed water system with improvement of polluted sludge accreted in bottom of polluted lakes, and

  6. be used in areas of advanced treatment of organic waste water such as municipal waste water and highly-polluted waste water.

Starvation, Epidemic and Destitution are common issues for all people. In order to tackle such issues, we requires latest advanced waste water treatment technology with low burden to our society for our development.

With our website, we would like to let you know our new technology “HLS” as much as possible.

Yours sincerely,

Hiroshi KISHI
President, Rural Environment Research Association

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