Title:
DEVICE AND METHOD FOR PURIFYING WATER IN RICE FIELD OR THE LIKE AND COUNTERMEASURE AGAINST FLOOD BY USING RICE FIELD OR THE LIKE
Document Type and Number:
Japanese Patent JP2002143836
Kind Code:
A
Abstract:
To provide a water purifying device in a rice field or the like to prevent harmful nitrogen or phosphorus from flowing out to river or the like.
The water purifying device is used for a rice field or the like where water is supplied to function for specified purposes and then drained, and the device has a long passage for purification connected to the inner part of the rice field or the like and is provided with a water purifying material in the passage. The passage for water purification is made in a meandering form.
Inventors:
FUJIWARA MITSUHIRO
Application Number:
JP2000348822A
Publication Date:
May 21, 2002
Filing Date:
October 10, 2000
Export Citation:
Assignee:
FUJIWARA MITSUHIRO
International Classes:
A01G25/00; C02F1/28; E02B3/00; E02B13/00; E02B13/02; (IPC1-7): C02F1/28; A01G25/00; E02B3/00; E02B13/00; E02B13/02
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