보고서 정보
주관연구기관 |
자연과환경(주) |
보고서유형 | 최종보고서 |
발행국가 | 대한민국 |
언어 |
한국어
|
발행년월 | 2008-04 |
과제시작연도 |
2007 |
주관부처 |
농림축산식품부 Ministry of Agriculture, Food and Rural Affairs(MAFRA) |
등록번호 |
TRKO201400022696 |
과제고유번호 |
1385006643 |
사업명 |
농림기술개발 |
DB 구축일자 |
2014-11-14
|
초록
○ 연구결과
․농수로 적용을 위한 수질정화 재료 및 성형화 제품 개발
․농수로 적용이 가능한 수질정화형 수로관 제품(수질정화수로관) 개발 및 시공기법 개발
․농수로 내의 생태계를 고려한 수로관 제품(환경생태수로관) 개발 및 시공기법 개발
․농촌유역 및 농업용수 수질 개선을 위한 고효율 인공습지 개발
Abstract
▼
Ⅳ. Results and Recommendations
The research compared and analyzed water depth and the distribution of the velocity of moving fluid through the numerical interpretation based on the changes in the arrangement of a water purification system. And then, it examined the characteristics of three-dimens
Ⅳ. Results and Recommendations
The research compared and analyzed water depth and the distribution of the velocity of moving fluid through the numerical interpretation based on the changes in the arrangement of a water purification system. And then, it examined the characteristics of three-dimensional flow of a waterway. Through the test of an irrigation model, it installed a water purification system on a waterway in question and researched the irrigation stability of the waterway. It used FLOW-3D, a 3D flood control model, and constructed a minute lattice to examine the local flow in the waterway. It measured the velocity of moving fluid and the water level for FLOW-3D, irrigation model test, and monitoring of the waterway respectively, and analyzed the flow characteristics based on various conditions. It is judged that the research results will become basic data for preparing a standardized analysis system that judges the stability of streams and waterways to which a natural stream construction method is applied. And further, they will have important meanings in formulating the standards and the application of natural stream maintenance and waterways.
A mixed media was developed with absorption test to develop high efficient contact media that can be applied to the natural purification facilities, and the mixed contact media has shown high absorption to NH4+ and PO43-, which was able to use for water purification media of natural purification facilities like constructed wetlands system.
Model test of mixed contact media on water purification ability has shown that 71.8% of BOD, 47.9% of TSS, 41.1% of TN and 73.1% of TP were removed showing high removing efficiency of BOD and TP, but low on TSS and TN. This result was simply from test of water quality change at not moving condition, which the purification effect did not work fully and when polluted water flows through media like in constructed wetland system, the removing efficiency of TSS and TN can be increased.
Water quality purification materials were made by using contact media and pH, EC, CEC, organic matter content, available phosphorus, TN and TP of mixed contact media were 7.6, 0.26 dS/m, 20.05 meq/100g, 0.14%, 13.65 mg/kg, 338.28, mg/kg and 599.88 mg/kg; the water quality purification materials have 1.2, 2.06 dS/m, 37.65 meq/100g, 0.20%, 0.50mg/kg, 155.23mg/kg and 342.41 mg/kg, which shows that it can be used as water purification material.
A stair-type up and down flow constructed wetland system was introduced as a water quality purification system for agricultural water and non-point pollution source in farming regions efficiently and added mixed contact media here and analyzed the purification efficiency rate, it has shown that 83.2% of SS, 81.7% of BOD, 43.6% of COD, 62.1% of TN and 21.1% of TP were removed. As the stair-type up and down flow constructed wetland system has features of secured aerobic condition and anaerobic condition, and has long contact flow distance with media, it can be expected to have great effect as being used as a purification facility. For constructed wetland systems, it can be constructed with cast-in-site concrete, but it would be better to develop a package type to increase the efficiency of construction.
40.3% of SS, 0.7% of COD, 8.9% of TN and 11.6% of TP were removed at the water quality purification material installed drainage canal. Even though the removal ratio was low, but this was because of installation of water quality purification material at only partial places, thus, if it was to be installed at entire drainage canal, it would have high efficiency. The BOD did not get lowered, but this was because the influent was very low concentration of 3.1 mg/L and also, the effluent were all below 3.2 mg/L, which is greatly lower than the 8.0 mg/L of water quality standard for agricultural water, there should be no problem of reusing it as agricultural water. If the water quality purification materials are installed separately, it might be washed out during the rain, thus, if they are installed in net bags like installed in this study, it can increase the stability. Therefore, it doesn't necessarily be fixed with concrete structures, but to install with net bags, it can increase the efficiency of construction.
A water purifying drainage flume with the structure of able to install water quality purification materials on the bottom of it to have water purifying functions was developed. Although, 39.6% of SS, 10.4% of COD and 13.0% of TP were removed at water purifying drainage flume, BOD and TN were not removed. For BOD, when the water was not purified, it all satisfied the water quality standards for agricultural water.
As water purifying drainage flume was built with assembling method, it can increase the construction efficiency than the cast-in-site concrete.
For water quality purification material or water purifying drainage flume installed in drainage canals, nitrification is established because the water body is aerobic condition, but the TN removal ratio was low because there are no spaces for denitrification. If a portion of drainage canal are dredged deeply to adjust the anaerobic condition, it would denitrify. Also, these deep areas can be used as the resting areas and shelters for aquatic creatures, which would be helpful for ecosystem preservation. Also, the water quality purification materials can simply be installed with nylon net bags to between drainage canals and can remove easily, it has very high construction efficiency, which has very high application of being used as a water quality improving method using water quality purification material and water purifying drainage flume.
목차 Contents
- 표지 ... 1
- 제 출 문 ... 2
- 요 약 문 ... 3
- SUMMARY ... 9
- CONTENTS ... 14
- 목 차 ... 15
- 표차례 ... 16
- 그림차례 ... 20
- 제 1 장 연구개발과제의 개요 ... 27
- 제 1 절 연구개발의 목적 ... 27
- 제 2 절 연구개발의 필요성 ... 27
- 제 3 절 연구개발의 내용 및 범위 ... 29
- 제 4 절 기술개발 추진 체계 ... 30
- 제 5 절 연구원 편성표 ... 31
- 제 2 장 국․내외 기술개발 현황 ... 33
- 제 1 절 농업용 수로의 친환경 공법 현황 ... 33
- 제 2 절 수질정화를 위한 친환경 인공습지 공법의 현황 ... 51
- 제 3 장 연구개발수행 내용 및 결과 ... 59
- 제 1 절 농수로 적용을 위한 수질정화 재료 및 성형화 제품 개발 ... 59
- 제 2 절 친환경 수질정화 수로관 및 시공기법 개발 ... 176
- 제 3 절 고효율 인공습지 개발 ... 218
- 제 4 장 목표달성도 및 관련분야에의 기여도 ... 271
- 제 1 절 연구개발목표의 달성도 ... 271
- 제 2 절 관련분야의 기술발전 기여도 ... 274
- 제 5 장 연구개발결과의 활용계획 ... 277
- 1. 사업화 추진방안 ... 277
- 제 6 장 참고문헌 ... 281
- 끝페이지 ... 288
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