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Article
Rice Crop Application for Humus Bioreactor by Rural Sewage System
Author(s)
Hitoshi Ogawa
Full-Text PDF XML 710 Views
DOI:10.17265/2162-5298/2018.08.001
Affiliation(s)
Research Institute, University of Tamagawa, Tokyo 194-0041, Japan
ABSTRACT
In this paper, author will report on the process of rice cultivation
in paddy fields using treated water which treated domestic sewage wastewater.
Odor problems from sewage treatment plants have been solved by confinement and
ventilation, but reducing the color and odor of treated water is economically
difficult and is a subject of recycling of discharged water. Humus pellet
bioreactors can be attached to existing sewage treatment plants to suppress the
odor of the sewage treatment plants as a whole and to prevent sludge from
deteriorating and to improve the quality of treated water. The odor and color
of the treated water discharged from the sewage treatment plant was reduced. In addition, we were able to obtain
performance of treated water with nitrogen 3 mg/L, phosphorus 1 mg/L or less throughout the
year. On the other hand,
there are many cases of results that cannot
be used for paddy rice cultivation and vegetable production etc. by ignoring
plant growth and physiology (fertilizer). For that reason, laws and guidance
such as having to dilute more than 50 times in order to use processed water for
agriculture are being conducted without learning. It is a case of using humus
pellets in sewage treatment system and using deodorized wastewater of sewage by
adjusting fertilizer when used in paddy field rice production.
KEYWORDS
Odor problem, odor reduce, humus pellet, bio-reactor, recycle water, rice production.
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