초록 ▼

황동어망가두리의 실용화연구를 통해 친환경적이고 태풍과 적조 등의 재난에 대응이 가능한 황동어망 가두리의 기술개발을 이루고 양식 생산성을 향상시키며 경제적인 가두리양식 산업의 모델을 제시하고자 부상형 및 부침형 황동어망 가두리 시설의 설계, 부상형 및 부침형 황동어망가두리의 설치 및 시설안전성 평가, 부상형 및 부침형 황동어망가두리 양식생물의 안전성 평가, 황동어망 가두리 참돔의 생물(식품) 안전성 평가, 부침형 구리합금 가두리 시설물의 안전성 평가, 부상형 구리합금 가두리 경제성 평가 모델을 도출함

◦ 양식생산성 향상

황동어망가두리의 실용화연구를 통해 친환경적이고 태풍과 적조 등의 재난에 대응이 가능한 황동어망 가두리의 기술개발을 이루고 양식 생산성을 향상시키며 경제적인 가두리양식 산업의 모델을 제시하고자 부상형 및 부침형 황동어망 가두리 시설의 설계, 부상형 및 부침형 황동어망가두리의 설치 및 시설안전성 평가, 부상형 및 부침형 황동어망가두리 양식생물의 안전성 평가, 황동어망 가두리 참돔의 생물(식품) 안전성 평가, 부침형 구리합금 가두리 시설물의 안전성 평가, 부상형 구리합금 가두리 경제성 평가 모델을 도출함

◦ 양식생산성 향상 및 양식생산량 23.3% 증대
◦ 황동어망 재질의 내구성 개선
-인장강도: 목표 인장강도 440MPa에서 30% 향상한 580MPa 달성함
-내식특성: Cr, Co를 함께 첨가한 경우 평균부식깊이 54μm 이하 달성함
-내마모성: Cr 첨가와 인발비 향상으로 인한 내마모성 향상(마모량0.52mm)
◦ 부상형 및 부상침하형 황동어망 가두리 설계 및 제작
◦ 황동어망 해상가두리 사육어의 식품안전성
-해상가두리에서 사육된 참돔의 가식부에서는 구리성분의 검출이 없었으므로 생물 및 식품 안전성에 문제없는 것으로 판단됨
◦ 황동어망가두리의 시설 안전성
-황동어망 가두리 계류줄의 장력은 유속 0.6m/s에서는 약 3ton으로 추정되었고, 환경 영향 및 안전계수를 고려한 계류줄의 파단강도는 약 20.73톤 정도로 추정됨
◦ 황동어망 가두리 경제성 평가 모델 도출
-친환경 황동어망 가두리 경제성 분석을 위한 표준 모델을 도출함

(출처 : 요약서 3p)

Abstract ▼

Purpose &
Contents
◦ Purpose of Research
Through the research on practical use of brass fish net cages, we will develop technology for brass fish nets that are environmentally friendly and can respond to disasters such as typhoons and red tide, improve aquaculture productivity, and present

Purpose &
Contents
◦ Purpose of Research
Through the research on practical use of brass fish net cages, we will develop technology for brass fish nets that are environmentally friendly and can respond to disasters such as typhoons and red tide, improve aquaculture productivity, and present an economic model of cage production industry.

◦ Research contents
-Design and assembly of the brass net fishing cage of floating and the submersible type
-Evaluation of indoor application of copper alloy fishing net cage facilities
-Application and safety assessment of aquaculture
-Development of the economic model for financial analysis of copper-alloyed fish farming nets.

Results
◦ Improved productivity
-Brass fish nets showed little adherent organisms for 3 years, and the attached organisms of fiber fish nets increased 683 ~ 2,305 times compared to brass fishing net
-Aquaculture production increased 23.3%
◦ Improved durability of brass fishing net material
-Tensile strength : The target tensile strength is 440 MPa. Achieved 580 MPa, 30% higher than the target.
-Dezincification : Dezincification was improved when Cr and Co were added together.
Corrosion depths of less than 54μm have been achieved.
-Wear resistance : Wear resistance was improved due to the addition of Cr and drawing ratio. (abrasion loss 0.52mm)
◦ Design and assembly of the brass net fishing cage of floating and the submersible type
-proposed the specification of the brass netting and the prototypes
-made the prototype of the footboard for the offshore fishing cage, which has the function of aid-floating
-drew the design documents of the brass net fishing cage models up
◦ Food Safety of fish breeded in copper alloy fishing net cage
-When copper fragments were placed in closed tank for more than 2 months, elution of copper ions occurred in the experimental group of 30 ㎍/L or more.
However, no elution of copper ions more than natural seawater has been confirmed in cages of marine.
-Since the edible part of red seabream Pagrus maior reared in copper alloy fishing net cages did not detect copper, it is judged to be no problem for biological and food safety.
◦ Structural safety of cooper alloy net system
- The tension of mooring line was about 3 tons at a current speed of 0.6 m/s, and its breaking strength considering the environmental impact and safety factor was estimated to be about 20.73 tons.
-The volume change rate of cooper alloy net cage according to the tidal current did not appear to decrease within about 0.2m/s of current speed.
- The swimming speed of the reared tuna was almost similar between daytime and nighttime. but, the mode value in the daytime distribution ranged from 1.0 ~ 1.2m/s, and the mode value at night ranged from 0.8 ~ 1.0m/s, showing a slightly higher daytime ◦◦Development of the economic model for financial analysis of copper-alloyed fish-farming nets.
-The present research developed a standard economic model for financial analysis of off-shore aquaculture, enabling economic analysis when using brass fishing nets in the future.
-The current study developed a comparative economic model comparing the productivity of copper-alloyed fish-net and fiber net.
-The present study provided vital information and references on off-shore aquaculture investment through expert AHP analysis to determine off-shore aquaculture target species.
-The current research investigated consumer preference by surveying awareness of sustainable aquaculture products.
- The present study proposed measures to facilitate the use of copper-alloyed nets.

Expected Contribution
◦ Strengthening production competitiveness of aquaculture fisherman by increasing stable aquaculture production
◦ At present, the marine aquaculture industry uses copper alloys as a material for aquaculture fishing nets. The newly developed brass for aquaculture fish nets has superior tensile strength and dezincification compared to overseas products. The localization of fishing net materials will be competitive.
◦ Brass fishing nets are 100% recycled after use, preventing marine environmental pollution.
◦ Preoccupancy of the building technology of the brass net fishing cage based on this research that will be useful for the standardization studies
◦ Utilize aquaculture site selection study : Selection of aquaculture site considering characteristics of brass fish net cage system and use as basic data for related research
◦ The first field measurement for the mooring line tension, the net deformation, and floating and sinking characteristics of the offshore cooper alloy net cage in korea
◦ contribute to develop an advanced aquacultural monitoring technology for sea cage system
◦ contribute to the perception change to the diffusion and the supply of the cooper alloy net cage by verifying the structural safety of the net system

(출처 : SUMMARY 6p)

목차 Contents

• 표지 ... 1
• 제출문 ... 2
• 보고서 요약서 ... 3
• 요약문 ... 4
• SUMMARY ... 6
• 목차 ... 8
• 제1장. 연구개발과제의 개요 ... 9
• 제2장. 국내외 기술 개발 현황 ... 17
• 제3장. 연구 수행 내용 및 성과 ... 27
• 1절. 1차년 연구 수행 내용 및 결과 ... 27
• 2절. 2차년 연구 수행 내용 및 결과 ... 118
• 3절. 3차년 연구 수행 내용 및 결과 ... 212
• 4절. 4차년 연구 수행 내용 및 결과 ... 448
• 제4장. 목표 달성도 및 관련 분야 기여도 ... 611
• 제5장. 연구개발성과의 활용계획 ... 615
• 제6장. 연구개발성과의 보안등급 ... 617
• 제7장. 국가과학기술종합정보시스템에 등록한 연구시설·장비 현황 ... 618
• 제8장. 연구개발과제 수행에 따른 연구실 등의 안전 조치 이행 실적 ... 619
• 제9장. 연구개발과제의 대표적 연구 실적 ... 620
• 제10장. 기타 사항 ... 623
• 제11장. 참고 문헌 ... 648
• 끝페이지 ... 651