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Name
OGAWA Hitoshi
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***
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-
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Tamagawa University Research Institute
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Assistant Research Professor
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ACADEMIC DEGREES
Enviromental Science TOHOKU University 2014-09
Agriculture TAMAGAWA University 1991-03
Area of research
Environmental dynamic analysis Environmental impact of pasture spraying of biogas digestion residue
Environmental impact assessment Trends and countermeasures for urbanization and odor generation in Asia
Environmental engineering and reduction of environmental burden odor control of livestock house
Environmental engineering and reduction of environmental burden Rain water measures and economic efficiency of the digestive liquid residue and biogas
Environmental engineering and reduction of environmental burden Reuse of treated water from domestic wastewater
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Environmental conscious materials and recycle Light oil conversion of plastics
Environmental and ecological symbiosis Deer capture and meat utilization
Environmental policy and social systems Economic efficiency and environmental impact of the 3Rs
Japanese language education Dairy (milking cow) technical intern trainee and Japanese ability
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Research project
Dairy (milking cow) technical intern trainee and Japanese ability In Japan, which is based on English education, there is a big problem in adapting technical intern trainees who cannot speak English at all and only in their native language and Japanese. It can be read from the question that not only the institutional aspect but also the systematization of training management and the fact that the sending side has not been able to distribute to technical intern training according to sufficient Japanese language ability. In the field of dairy (milking cows), it is required to grasp the characteristics of the accepting side only in Japanese, to grasp the training contents in advance, and to have the language skills necessary for the training. Since the local Japanese education side focuses on general social life, it has begun to become a social problem because it is not possible to move when it is not possible to adapt.
Environmental impact of pasture spraying of biogas digestion residue Individual The digestive juice residue generated by biogas power generation is on the slurry and is suitable for mechanical spraying. On the other hand, the amount of rainfall is affected by climate change, and the amount of rainwater inflow exceeds 800 tons per year as measured by medium-sized milking farmers (200 heads), and the number of sprays is 100 or more and the total mileage is 2000 km. (= 1000 liters or more of light oil). In addition, nitrogen retained in the soil is easily washed away by being diluted with rainwater, causing pollution of rivers and groundwater. Measure the mass balance as an actual fee and investigate the environmental impact from the pasture.
Economic efficiency and environmental impact of the 3Rs Individual The effect of the 3Rs is large in cities and densely populated areas, and the effect is poor in remote areas and areas far from urban areas due to transportation costs and the like. However, it is difficult to reprocess containers and materials in places where the economic effect is poor, and thermal recycling as the final treatment is becoming difficult due to misunderstanding of the dioxin generation mechanism. In addition, drifting objects caused by tsunamis not only become a negative cross-border heritage, but also affect the ecological environment. We will comprehensively consider them and study the compatibility between the social structure and the economy, which is also established as an SDGS.
Light oil conversion of plastics Individual It is said that the problem of plastic waste in the environment has a large moral factor of being abandoned in the environment without being collected. On the other hand, returnable materials increase the amount of carbon dioxide released when they go out to rural areas or remote areas due to fuel consumption when returning. Some places carry hundreds of kilometers for use at power plants (thermal recycling). Develop a small device that converts the waste discharged from containers into light oil that can be reused and stored on the spot. We will evaluate the economic efficiency of recovering plastic waste that has drifted to the coastline due to tsunamis and drifting objects by converting it into valuable resources.
Trends and countermeasures for urbanization and odor generation in Asia Individual Although sewage is improved due to urbanization, odor problems are occurring not only in treatment facilities but also in the entire basin due to inflow and load exceeding the planned capacity. In addition, damage to the sanitary environment has also occurred due to abnormal breeding of algae due to eutrophication in rivers and the decay of biological bodies due to death. Investigate the situation and countermeasures.
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Rainwater countermeasures and economic efficiency of biogas and digestive liquid residue Individual The biogas system in Hokkaido follows the Danish style and is an open type that stores digestive juice debris. The basis was the annual rainfall of less than 800 mm. As a current actual measurement, rainwater of about 1300 to 2000 mm has been observed. A dairy farmer with 200 milking cows can calculate that a lagoon area of 500 square meters to 1000 tons can be shipped to the pasture. In other words, the number of exports is about twice as much as planned, but since 100 5-ton tank trucks are transported for about 20 km, fuel and labor costs for a mileage of 2000 km are a burden. It is a loss of about 300,000 yen for 2 people x 10 days and fuel cost alone. Costs increase for canopies, etc., and it is necessary to come up with some efficient method for removing rainwater.
Deer capture and meat utilization Individual The value of forest resources has declined, and the overgrown vegetation of undergrowth has brought wild animals closer to the living environment of humans, and deer and wild boar have been made bad for human convenience as harmful animals. On the other hand, unlike livestock, although the qualitative variation is large, a system has been created that misunderstands that if meat is made into meat by the same processing method as livestock, the quality will be improved. Therefore, most of the captured deer are discarded. Trace the meat processing methods of wild animals in Europe and clarify the differences from the current processing methods.
Odor control of livestock house Individual The livestock barn is becoming a closed type (shield type) to prevent infections such as bird flu and foot-and-mouth disease. On the other hand, the generation of odors associated with indoor ventilation is manure collection and animal odors, so physical and chemical methods are costly and economically impaired. Since we succeeded in applying the biofilm method in the pig farm as a demonstration test machine, we will redesign it as a practical machine and enhance its functions. I would like to clarify that the denitrification of the ANAMMOX system, which was unknown at that time, is functioning.
Reuse of treated water from domestic wastewater Water treatment is a strange field that produces good quality water from sewage. The resulting water is diluted in environmental water, but in an unnecessarily good treated water environment, it reduces biological productivity. In general, the quality of treated water in rural areas was unsuitable for rice cultivation, but since varieties with high nitrogen resistance were developed, it is now time to obtain good quality rice even if the water quality environment is poor. On the other hand, abundant nitrogen and phosphorus resources remain in the treated water. By using the wastewater from a treatment plant with a population of 2000 in paddy fields, the same effect as several tons of chemical fertilizer can be obtained.
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Biographical information
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Research achievements (PUBLICATIONS)
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Effect of reduction of nitrogen and phosphorus in treated water (wastewater) from rural settlement wastewater treatment plant in drainage area obtained by using water for adjacent paddy field 26th Symposium on Environmental Chemistry 2017-06
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2010
Acceptance of special research students
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