Journal of the Korean Society of Fisheries and Ocean Technology (수산해양기술연구)

The Korean Society of Fisheries and Ocean Technology (한국수산해양기술학회)
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Investigation of water qualities and microbials on the flow-through olive flounder, Paralichthys olivaceus farms using coastal seawater and underground seawater in Jeju

연안해수와 지하해수를 사용하는 제주 넙치 양식장의 수질과 미생물 변동

  • KIM, Youhee (Department of Smart Aquaculture, Gangwon State University)
  • 김유희 (강원도립대학교 스마트해양양식과)
  • Received : 2021.10.14
  • Accepted : 2022.01.24
  • Published : 2022.02.28
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Abstract

This study assessed the levels of water qualities and microbials contamination of inland olive flounder farms in Jeju in the summers from 2015 to 2017. Three farms (A-C) located in a concentrated area using mixing coastal seawater and underground seawater and one farm (D) located in an independent area using only coastal seawater were selected. Total ammonia nitrogen (TAN) reached a maximum of 0.898 ± 1.024 mg/L as N in the coastal seawater of A-C, which was close to the limit of the water quality management goal of the fish farm. TAN in the influent from A-C was up to three times higher than that of D, so that the discharged water did not spread to a wide range area along the coast and continued to affect the influent. TAN of the effluent in A-C increased by 2.7-4.6 times compared to the influent, resulting in serious self-pollution in the flounder farm. Heterotrophic marine bacteria in the influent of A-C was about 600 times higher than D, and the discharge of A-C was increased by about 30 times compared to the influent.

Keywords

Acknowledgement

이 논문은 2014년부터 3년간 해양수산부 재원으로 한국해양과학기술진흥원의 지원을 받아 수행된 연구입니다(육상 넙치양식장 생산성 향상을 위한 오존 고도산화 활용 기법 개발).

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