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TOP > English > Research & Development > Establishment of sound water environment
In the closed water areas such as the three major bays (i.e., Tokyo Bay, Ise Bay and Osaka Bay) and other designated lakes and reservoirs, water pollution by eutrophication is a serious problem. To create good water environments for life to inhabit, it is essential to try to steadily reduce non-sewer pollutant loads as well as to keep improving sewerage. Furthermore, it is necessary to promote the creation and preservation of fine waterfront spaces inside urban areas. JIWET has been carrying out joint research for the creation of a good social environment and working on the establishment of a sound water circulation system and good water environments.
Joint research already conducted
「Study on reduction of pollutant loads from non-point source in urban area」、
「Investigation of chemistry substance inflow/outflow actual condition ]of a sewer」
「Investigation research on the aquatic life living thing influence of a sewer」
etc.
Recent research
「Study and Research to Review Collaborative Measures for Water Quality Improvement of Closed Water Body」
「Survey Research of Risk of Inflows of Trace Chemical Substances and Other Disturbancesto Water Quality」
etc.
- +Result
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- +2010
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- Joint Research on the load of Nonpoint Source Pollution (Otsu City)
- Research on Membrane Technology Guideline in Sewage Works
- Study and Research to Review Collaborative Measures for Water Quality Improvement of Closed Water Body
- Study of Nitrogen removal process controlled by NADH
- Research on Membrane Bioreactor with Ceramic Flat Membranes
- +2009
- +2008
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- Research on Membrane Technology Guideline in Sewage Works
- Investigation and Research on Policies to Reduce Pollutant Load as Joint Efforts of Relevant Bureaus in Tokyo Bay
- Review of Policy and Promotion of Non-Point Countermeasures
- Study on Effective Combined Sewer Overflow Monitoring Method
- Research on Countermeasures to Deal with Infiltration Water during
- Joint Research on Non-point Pollution Loads（Otsu City）
- +2006
- +2005
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- Symposium on Adaptive Management of Metropolitan Areas and Tokyo Bay- What Are the Best Practices from Around the World？-
- Workshop for Urban Waterscape PlanningRecapturing Its Waterfront Heritage in Planning Its Future
- Research Project of Water Environmental Improvement of Intermediate Channel Neighboring South Lake Biwa Central Area Sewerage Plant
- Study on the Formulation of a Long-term Concept for the Sakai City Sewage Works
- Research on Initial Road Pollution Load（Nitrogen, Phosphorus, etc．）
- +2004
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- Study on propeller type underwater mixer with swivel mechanism
- Study (Application to Deep Tank) on Membrane Plate Type Aerator
- Investigation research on biota in receiving waters of the Yahagi-river purification center
- Investigation of chemistry substance inflow/outflow actual condition of a sewer
- Research on Sewerage Facility Green and Water Park Development Project
- Investigation research on the aquatic life living thing influence of a sewer
- +2003
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- Research on the membrane panel type-air supplier
- Survey on the establishment of vision for Kanto Kohshin region sewage system
- Survey study on the biota formed in effluent receiving areas (Aichi Prefecture, Yokohama City, Hyogo Prefecture)
- Survey on the formulation of the northeast block sewerage-vision
- Survey on vision establishment vision for the Chubu region sewage system
- Survey on the sewer vision in Chugoku district
- Survey on Hokkaido district sewerage-vision development
- +2002
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- Investigation on the reciprocal sludge collector
- Investigation on the Notch-chain-sludge collector
- Research on the ability of liquid-solid separation of mixed liquor of the activated sludge process using a non-woven fabric
- Research on assessment technique of life cycle in sewer
- Surveillance study on microchemistry material in sewerage facilities(the3)
- Surveillance study on risk management such as chemicals in sewer
- Survey Study on Measures for Water Quality Decontamination in Tokyo Bay
- Survey Study for Reconstruction of Water Cycle in Sagami River Basin
- +2001
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- Evaluation of the efficiency of the improved technology using ozone-addition
- Survey Study on Formulation of By-basins Comprehensive Plan for Sewerage Construction in Bisan Seto Sea Area
- Surveillance study on Sagami river water circulation restructuring
- Surveillance study on valley aquatic environment data base construction
- Survey study on the pollution load reduction techniques in the large area such as the city etc.
- +2000
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- Survey Study on Reservation of the Healthy Water Cycle
- Surveillance study on endocrine disrupters in Sewer
- Current state concerning microchemistry material in sewerage facilities and surveillance studies on measures (the2)
- Survey Study on Formulation of Basic Plan of Sewerage in Yumeshima Area in Osaka City
- Survey study on the introduction of water cycle complex system in a new city area (Nagareyama area)
- Survey study of biota formed in water areas receiving treated wastewater
- +1999
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- Investigation of the influence on the aquatic organisms including “Sirouo” due to the treated wastewater of Tataragawa Purification Center
- Surveillance study on energy saving measures of existing sewerage facilities(the2)
- Surveillance study on biota formed in the waters at sewage disposal water discharge destination
- Survey Study on Basic Information for Toxic Chemicals in Sewerage
- Survey study of biota which are formed in the treated wastewater
- Survey Study on Conservation Plan of Water Environment of Ebi River and Mama River Watershed
- +1998
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- Study on the existing situation and measure of micro-chemicals in the sewage system
- Joint research on the plastic sludge scraper
- Collaborative research for the use and application of runoff pollutant load model
- Study on satellite wastewater treatment facility in river basin sewerage system of the Sagami River
- Study on Comprehensive Basin-wide Planning of Sewerage Systems
- Study on Establishment of Guideline Draft for Rain Water Cycle Sewerage System
- +1997
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- Study on the utilization of the improved technology for the treatment capacity by ozone addition
- Investigation on the executive planning of the project to improve the Hayama stream-region
- Study on renovation of water cycle system in Yokohama-city (Part 2)
- Study on reduction of pollutant loads from non-point source in urban area
- Study on modification of Sagami river basin sewerage system project in 1997 (Advanced treatment facilities)
- Research for making the guideline to promote the water cycle in provincial city developing project
- +1996
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- Investigation on the transfer of the existing OD (Oxidation Ditch) process to the coventional activated sludge process
- Study on Long-term Technology Development for Sewage System
- Basic study on renovation of water recycle system (2)
- Comparative study of models for wet weather pollutant loads analysis
- Basic study on reclamation of sound water cycle and sewerage works in urban development
- Study on renovation of water cycle system at Yokohama-city in FY 1996
- +1995
- +1994
- +1993
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- Research on the UV disinfection of treated wastewater
- Study on the utilization of the high-rate filtration
- Investigation on transformation of the oxidation ditch (OD) process to the conventional activated sludge process
- Study on reduction of pollutant loads from non-point source in urban area
- Development of “Seseragi” Plant (Satellite Plant)
- Study on non-point pollutant loading
- Discussion on the Future Sewerage in Kyoto
