CLOSED REARING METHOD AND CLOSED REARING APPARATUS

WIPO Patent Application WO/2016/031827

A1

Provided is a closed rearing method and a closed rearing apparatus with which it is possible to decompose and remove ammonia contained in rearing water without supplying an excessive amount of ozone and with which it is also possible to suppress the generation of toxic oxidants. In a closed rearing method for aquatic organisms and marine animals involving ozone treatment that decomposes ammonia in rearing water by supplying gas containing ozone into the rearing water, the closed rearing method is characterized in that aquaculture is performed in a closed environment by means of a first step for determining an aquaculture-water ozone concentration and pH condition that are suitable for reducing the amount of hazardous oxidant generation by treating, in advance, the rearing water to reduce ammonia contained therein to a target value by using an apparatus that actually applies the treatment and a second step for applying ozone treatment to the rearing water in accordance with the suitable ozone concentration and pH condition determined in the first step.

YOSHIYA SHOTA (JP)
KATAKURA TOSHIHIRO (JP)
FUJI MASATOSHI (JP)
SAKURAI TAKAKO (JP)

PCT/JP2015/073897

March 03, 2016

August 25, 2015

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KITZ CORP (JP)

A01K63/04

JPH08308430A	1996-11-26
JP2635432B2	1997-07-30

JUNKO TANAKA: "Study on Application of Ozone for Water Quality Improvement of Prown Culture Ponds", DAI 33 KAI JAPAN SOCIETY ON WATER ENVIRONMENT NENKAI KOENSHU, 1999, pages 477
MAMORU YOSHIMIZU: "Gyorui Yoshoku Oyobi Saibai Gyogyo deno Ozone no Riyo", OZONE NENKAN, 1993

KOBAYASHI, TETSUO (JP)
Tetsuo Kobayashi (JP)

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