• 한국물환경학회지
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• 제20권2호
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• pp.157-162
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• 2004

Constructed wetlands are considered as an important tool for wastewater treatment, wastewater management and flooding control. In addition, one of the most promising technologies for application in many countries seems to be constructed wetlands, due to their properties such as utilization of natural processes, simple construction, operation and maintenance, process stability, cost effectiveness, etc. This study considered possibility of treatment of livestock wastewater using a constructed wetland. The removal efficiencies of $COD_{cr}$, TOC, TN, TP, SS, and color were 97.6%, 96.6%, 97.0%, 96.7%, 99.0%, and 85.6%, respectively. In particular, SS was completely removed. However, $Cl^{-}$ concentration of the constructed wetland effluent was higher than that in influent. In conclusion, constructed wetlands could be applied to livestock wastewater treatment if $Cl^{-}$ would be properly treated. Further, it needs time for stabilization to reduce the pollutants which were accumulated in soil.

• 한국습지학회지
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• 제7권3호
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• pp.33-39
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• 2005

인공습지는 하수처리, 하수관리, 홍수제어등 다양한 분야에 적용될 수 있는 system으로 고려될 수 있다. 또한 인공습지는 자연친화적인 공법으로 건설, 운전 및 유지, 비용의 저렴등 여러 장점을 지니고 있어 많은 나라에서 적용가능한 공법중 하나로 간주되고 있다. 따라서 본 연구에서는 국내에서 수질오염의 주요한 원인으로 간주되고 있는 축산폐수를 인공습지로 처리하여 그 적용가능성을 살펴보고자 하였다. 실험결과 CODcr, TN, TP, SS, 색도의 제거율이 각각 97.9%, 97.8%, 97.2%, 99.1%, 84.9%로 나타났다. 특히 SS의 제거율이 높게 나타났다. 따라서 인공습지를 이용한 축산폐수의 처리가능성은 높은 것으로 나타났다. 한편 인공습지에 유입되어 토양에 축적된 오염물질이 토양에서 안정화 되는 데는 일정한 시간이 소요될 것으로 판단된다.

• 대한환경공학회지
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• 제35권6호
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• pp.407-414
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• 2013

가축분뇨 공공처리시설 및 개별농가에서도 적용이 가능하도록 경제적이고 운영이 비교적 쉽고 간단하며 부지가 적게 소요되는 컴팩트한 처리시설을 개발하기 위하여 안성에 있는 M농가에 실규모의 처리시설(100톤/일)을 설치하고 공공처리시설 방류수 수질기준까지 처리할 수 있도록 운영하였다. 벨트프레스 탈수기를 통해 고액분리된 액상 가축분뇨는 MBR/NF/RO를 통해 처리되고 NF/RO농축수 및 가축분뇨처리 슬러지는 혼합한 뒤 탈질을 거쳐 응집가압부상을 통해 처리된다. MBR/NF/RO처리수와 가압부상조 유출수를 혼합 방류하면 공공처리장 수질기준 BOD 30 mg/L, T-N 60 mg/L, T-P 8 mg/L 이하가 달성된다. 가압부상 농축 슬러지는 벨트프레스 탈수기로 유입되어 고상 가축분뇨와 함께 탈수되어 분리된 고형물의 수분함량은 90%로 톱밥과 혼합되어 퇴비로 활용된다.

• 환경위생공학
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• 제19권3호
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• pp.31-39
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• 2004

In order to reduce the pollution load from the livestock farms and to improve the water quality of the effluent in livestock wastewater, the electrolysis system is introduced. For the selection of optimal electrode, various combination of electrodes such as carbon, Al and Fe were examined. In this study, electrode material, electrolyte concentration, electrode distance, current density, and pH value were found to have significant effect on both pollutant removal efficiency and current efficiency in electrochemical oxidation process. After electrolysis for 90 min with carbon/Al, it was observed that COD, T-N, T-P and $NH_4^+-N$ of livestock waste-water were removed with $80\%,\;61\%,\;81\%\;and\;87\%$, respectively.

• 환경영향평가
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• 제10권1호
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• pp.9-19
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• 2001

An intensive watershed survey including water quality measurement of 6 times was carried out in order to find out the relationship between pollutant load and water quality in a small stream watershed where livestock wastewater is the main source of water pollution. The findings from the survey are as follows. 1) The number of livestock showed large disagreement among county office, myon, and insite survey. It is vital to check the data at the beginning of watershed survey. 2) The fluctuation of streamflow and water quality was so large depending on the day of measurement that it is essential to set up continuous telemetering system to get reliable data about delivery ratio of pollutants. 3) It was helpful for setting the priority of investigation to check water quality and quantity at several points along the stream after dividing the watershed into 5 drainage areas. 4) To control the livestock wastewater, especially in case of cows, it is necessary to have roof system and prevent overland flow from the ground. In case of pig farms, it is recommended to have public treatment system instead of private treatment system. The exact emission load of livestock wastewater was difficult to estimate, and requires more study.

• 상하수도학회지
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• 제22권3호
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• pp.359-366
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• 2008

The series of experiments under the various conditions were carried out to evaluate the feasibility of dissolved air flotation (DAF) as an alternative of conventional gravity sedimentation (CGS) and to investigate the decrease of the loadings following to biological wastewater treatment processes in livestock wastewater system. On the basis of the experiment result between CGS and DAF processes, for the other water quality criteria as well as suspended solid the removal efficiency of DAF process was about 20~25 % better than CGS process on average. In addition, the particle removal efficiency of DAF process became higher in proportion as the increase of air to solid (A/S) ratio and the general wastewater treatment efficiency of DAF process was enough to meet the requirement of loading decrease to following biological process even at low A/S ratio range. Though DAF process is widely known as an solid separation unit, there was not the notable relationship between particle separation efficiency and several pollutant removal efficiencies like $COD_{Cr}$ and nutrients (T-N, T-P). Assume that the $COD_{Cr}$ was removed as the fraction of particle separation in this experiment, the removal efficiency of T-N and T-P were sensitive to removal efficiency of $COD_{Cr}$, especially.

• 상하수도학회지
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• 제29권3호
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• pp.359-370
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• 2015

This study developed an up-flow wetland providing either an eco-friendly follow-up process of medium-sized public treatment facility for livestock manure or a non-point source pollution controller near livestock farms. The four bench-scale up-flow wetlands were operated with four different bed media sets. The removal efficiencies of the wetland effluent for CODCr, TN, TP, SS were 35.2 %, 29.5 %, 31.2 % and 52.2 % for set 1(Blank, without reed, with bio-ceramic), 40.6 %, 43.4 %, 42.2 % and 55.4 % for set 2(with bio-reed & without bio-ceramic), 45.2 %, 48.7 %, 46.6 % and 66.3 % for set 3(with bio-reed & bio-ceramic), 32.9 %, 27.3 %, 29.3 % and 54.1 % for Set 4(with reed & bio ceramic), respectively. The set 3 condition having a mixture of bio-reed and bio-ceramic showed the highest efficiency in the bench-scale evaluation. This study suggests a mixture of bio-reed and bio-ceramic as suitable bed media in the construction of artificial wetlands near livestock farms. Soils including the bed media were monitored during the evaluation for trace elements. Soil analysis results were satisfied with the Korean Soil Contamination Standard. This study showed that the up-flow constructed wetland was feasible to treat the effluent livestock wastewater treatment facility.

• 환경생물
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• 제35권4호
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• pp.654-661
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• 2017

축산폐수에 기인한 오염 물질 저감을 위해 최근 축산폐수처리 후속공정으로 인공습지와 같은 자연친화적인 처리법이 제안되고 있다. 따라서 본 연구는 자연친화적 공법이 수생태독성 저감에도 효과적인지 알아보기 위해 다양한 공정의 인공습지를 제작하여 축산폐수 시료를 대상으로 처리 전후 오염저감율 및 물벼룩 급성 독성 변화를 분석하였다. 본 실험결과, 비록 갈대의 유무 및 종류, 그리고 여재의 종류에 따른 영향은 없으나 인공습지에 처리된 경우 유입수에 비해 TN, TP, COD 농도 저감과 더불어 생태독성 영향이 감소하였다. 따라서 일반 갈대는 물론 바이오갈대와 바이오여재를 사용한 인공습지는 축산폐수의 TN, TP, COD 저감은 물론 생태독성 감소에도 효과적인 공법으로 판단된다. 향후 가축분뇨 정화시설과 연계한 후속처리공정으로 적용하기 위해서는 다양한 성상의 축산폐수를 대상으로 처리효율과 생태독성시험이 연계된 통합평가가 필요한 것으로 사료된다.

• 한국토양비료학회지
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• 제44권3호
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• pp.425-433
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• 2011

자연정화공법에 의한 축산폐수처리장에서 효과적으로 축산폐수를 처리하기 위해 인공습지 축산폐수처리 시스템에 전처리방법으로 수생식물여과조와 활성슬러지조를 적용하여 최적 전처리방법을 조사하였다. 또한, 최적 전처리방법을 실제 현장 축산폐수처리장에 연계하여 시공한 후 전처리방법의 효율성과 안전성을 검토하였다. 수생식물여과조와 인공습지를 연계한 소형 축산폐수처리장치에서 최종방류수 중 COD, SS, T-N 및 T-P의 처리효율은 각각 83, 89, 63 및 87%이었다. 활성슬러지조와 자연정화공법을 연계한 소형 축산폐수처리장치에서 최종방류수 중 COD, SS, T-N 및 T-P의 처리효율은 각각 96, 95, 86 및 92%이었다. 수생식물여과조 및 활성슬러지조는 인공습지 축산폐수처리장의 전처리공법으로서 질소와 인 처리효율을 향상시킬 수 있어 고농도의 축산폐수를 안정적으로 처리하기 위해 필요할 것으로 판단된다. 최적 전처리방법을 연계한 실제 현장 축산폐수처리장에서 COD, SS, T-N 및 T-P 의 처리효율은 모든 조건에서 각각 99.8, 99.9, 99.2 및 99.9%으로 높은 처리효율을 보였다.

• 대한수의사회지
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• 제22권4호
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• pp.238-245
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• 1986

To evaluate effects of livestock wastewater on stream pollution, the survey on the environmental sanitation, hydrology, water quality, Pollutant loads and bacterial indicators in a stream receiving livestock wastewater discharged from Chun Sung livestock