What's NEW wastewater denitrification treatment technology.

1. Hybrid Lagoon System Technical note.(1) 1986
   RERA HYBRID LAGOON TECHNOLOGY 2000

2. The water analysis tables 1975-1996
   For Drinking or Irrigation Water

3. The improvement of oxygen transfer efficiency and flexibility. 1981-1985.
   The red Book 1985 Chapter 5.

What's NEW process for inprovement of contaminated sediment by Succession of Micro Biota.

1. NEW PROCESS FOR IMPROVEMENT OF CONTAMINATED SEDIMENTS BY SUCCESSION OF MICRO-BIOTA
   2nd INTERNATIONAL CONFERENCE on COTAMINATED SEDIMENTS. Rotterdam Netherlands. September 7-11 1997

2. THE EXPERIMENTS REPORT OF BOTTOM SEDIMENTS PURIFICATION IN MARSH FURUKAWA, 1991.
   - 15th US-JAPAN expert meeting on management of bottom sediments counting taxis sugsusances. November 10-14 1991 LA California US-EPA, US-Army Corp of Engineering.
   - The experiments report of bottom sediments purification in Marsh Furukawa, 1988

3. Invitation for the Integration Project for the Southern Lake Biwa 1990.
   Concept, introduction, outline, content.