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한국수처리학회> 한국수처리학회지> 원심분리를 통한 음식물쓰레기 바이오차의 탈수 특성

KCI등재

원심분리를 통한 음식물쓰레기 바이오차의 탈수 특성

Dewatering Characteristics of Food Waste Biochar through Centrifugation

안광호 ( Kwang-ho Ahn ) , 이예은 ( Ye-eun Lee ) , 신동철 ( Dong-chul Shin ) , 정진홍 ( Jinhong Jung ) , 정윤아 ( Yoonah Jeong ) , 김이태 ( I-tae Kim )
  • : 한국수처리학회
  • : 한국수처리학회지 30권2호
  • : 연속간행물
  • : 2022년 04월
  • : 3-10(8pages)
한국수처리학회지

DOI

10.17640/KSWST.2022.30.2.3


목차

1. 서론
2. 실험재료 및 방법
3. 결과 및 고찰
4. 결론
사사
References

키워드 보기


초록 보기

Various methods of technology for using food waste as energy have been developed, but their utility as fuel is low due to the salt concentration contained in food waste. As of 2019, the daily amount of domestic food waste is approximately 14,000 tons, and as the amount of food waste increases, it is necessary to develop technology for processing a large amount of food. Bio-char made from food waste can be a good fuel with high calorific value if salt is removed. In this study, a centrifugal separator was used to remove chloride ions from bio-char, and as a result of the experiment, the higher heating value(HHV) was improved through centrifugation. Food waste bio-char showed higher calorific value as the particle size was smaller, and higher calorific value was improved by 15~25% after centrifugation than before centrifugation. As for the chlorine component removal efficiency before and after centrifugation, the smaller the particle size, the higher the chloride ion removal efficiency. After centrifugation, the moisture of bio-char was 21.7~30.4%, and the ultimate analyzes of bio-char were found the most in the order of carbon, oxygen, hydrogen, and nitrogen, and no sulfur component was detected. As a result of water quality analysis, the dewatering water after centrifugation showed the degree of contamination of sewage was shown.

UCI(KEPA)

간행물정보

  • : 공학분야  > 환경공학
  • : KCI등재
  • :
  • : 격월
  • : 1225-7192
  • : 2289-0076
  • : 학술지
  • : 연속간행물
  • : 1993-2022
  • : 1396


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이에 본 자료를 상업적 이용, 무단 배포 등 불법적으로 이용할 시에는 저작권법 및 관계법령에 따른 책임을 질 수 있습니다.

30권2호(2022년 04월) 수록논문
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KCI등재

1원심분리를 통한 음식물쓰레기 바이오차의 탈수 특성

저자 : 안광호 ( Kwang-ho Ahn ) , 이예은 ( Ye-eun Lee ) , 신동철 ( Dong-chul Shin ) , 정진홍 ( Jinhong Jung ) , 정윤아 ( Yoonah Jeong ) , 김이태 ( I-tae Kim )

발행기관 : 한국수처리학회 간행물 : 한국수처리학회지 30권 2호 발행 연도 : 2022 페이지 : pp. 3-10 (8 pages)

다운로드

(기관인증 필요)

초록보기

Various methods of technology for using food waste as energy have been developed, but their utility as fuel is low due to the salt concentration contained in food waste. As of 2019, the daily amount of domestic food waste is approximately 14,000 tons, and as the amount of food waste increases, it is necessary to develop technology for processing a large amount of food. Bio-char made from food waste can be a good fuel with high calorific value if salt is removed. In this study, a centrifugal separator was used to remove chloride ions from bio-char, and as a result of the experiment, the higher heating value(HHV) was improved through centrifugation. Food waste bio-char showed higher calorific value as the particle size was smaller, and higher calorific value was improved by 15~25% after centrifugation than before centrifugation. As for the chlorine component removal efficiency before and after centrifugation, the smaller the particle size, the higher the chloride ion removal efficiency. After centrifugation, the moisture of bio-char was 21.7~30.4%, and the ultimate analyzes of bio-char were found the most in the order of carbon, oxygen, hydrogen, and nitrogen, and no sulfur component was detected. As a result of water quality analysis, the dewatering water after centrifugation showed the degree of contamination of sewage was shown.

KCI등재

2초미세기포를 이용한 저수지 내의 조류 및 원인물질 제어

저자 : 정호진 ( Ho-jin Chung ) , 김종규 ( Jong-kyu Kim )

발행기관 : 한국수처리학회 간행물 : 한국수처리학회지 30권 2호 발행 연도 : 2022 페이지 : pp. 11-20 (10 pages)

다운로드

(기관인증 필요)

초록보기

This study evaluated the efficiency of algae control and the recurrence of algae over time using a water treatment system based on the generation of ultra-fine bubbles. As a result of the experiment, the pre-treated water that passed through the VCF pre-treatment system showed a slight chromaticity, but the organic and suspended substances and algae with a size of 10 μm or more were almost removed, and the concentration of COD, T-N, and T-P was reduced by 31%, 36%, and 19%. In the case of the final treated water, chlorophyll-a was reduced by 99.9%, and COD, T-N, and T-P, which are the causative substances of algae, were reduced by 95%, 96% and 94% compared to the raw water. As a result of monitoring the algae reproduction for 5 weeks, it was confirmed that the algae reproduction was controlled to be low for 5 weeks by ultra-fine bubbles, and the algae reproduction progressed after 5 weeks. Since ultra-fine bubbles can exist in water for a long time, if ultra-fine bubbles are continuously supplied to reservoirs or rivers where algae are generated, algae can be controlled eco-friendly without using chemicals. In addition, the water treatment system using ultra-fine bubbles is considered to be a new method to overcome the limitations of the algae removal method, such as eco-friendliness, persistence, and field applicability.

KCI등재

3불용성 전극을 이용한 착유세척수 전처리특성 연구

저자 : 왕영준 ( Youngjun Wang ) , 정종태 ( Jongtai Jung ) , 한상윤 ( Sangyun Han )

발행기관 : 한국수처리학회 간행물 : 한국수처리학회지 30권 2호 발행 연도 : 2022 페이지 : pp. 21-27 (7 pages)

다운로드

(기관인증 필요)

초록보기

Dairy farmers are required to have a purification facility that meets the legalization of unlicensed livestock and the increasingly stringent effluent water quality standards, with the alternative requirement of consignment treatment application. However, there is no defined standard model that addresses these requirements. Furthermore, even with a purification facility in place, many cases exist in which the purpose of the facility loses its significance because it does not meet the effluent water quality standard. For this reason, the National Institute of Livestock Research published the “Technical Guideline for Purification of Milk Washing Wastewater” in 2016, including data from the Livestock Environment Management Agency which evaluates methods relevant to dairy farmers, including the use of milking washing water purification facilities, livestock manure treatment facilities, and other related technical applications. However, a standard model has not yet been established. In this study, a non-aggregation electrolytic oxidation experiment was performed on raw water used as milking washing water. The results showed that the efficiency of the treatment of total nitrogen and ammonia nitrogen increased proportionally with treatment time, resulting in a removal rate of 81.8% of total nitrogen and 80.7% of ammonia nitrogen. In addition, the results demonstrated that the chromaticity item also increased proportionally to the oxidation time. When considering the water quality measurements of organic substances (BOD5 and CODMn), the treatment efficiency was determined to be limited, with the removal of organic substances limited by the single electrolysis process.

KCI등재

4미세기포를 이용한 Chlorella sp. 제거에 관한 연구

저자 : 조규진 ( Kyu-jin Cho ) , 박상원 ( Sang-won Park )

발행기관 : 한국수처리학회 간행물 : 한국수처리학회지 30권 2호 발행 연도 : 2022 페이지 : pp. 29-39 (11 pages)

다운로드

(기관인증 필요)

초록보기

This study carried out zeta potential measurements of Chlorella sp. under various solution conditions and investigated its characteristics through implementation of size control of the microbubbles in order to eliminate algae whichis problematic for both aquatic ecosystems and human activities. The DAF process was adopted and several coagulants were used to remove the Chlorella sp. A CCD Camera was used to measure and analyze the sizes of the microbubbles, and a fluorescent microscope was used to observe particles, algae species, and the community as a whole. Zeta potential behavior of the algae was analyzed using ELS-Z. Both lab-scale and pilot-scale experiments were conducted to test the flotation process. Polyaluminium chloride(PAC) coagulant was used, and the removal efficiency of the algae was assessed through chlorophyll-a analysis. In the lab-scale experiment, 2.2 mg/L, 11 mg/L, 22 mg/L, and 44 mg/L of polyaluminium chloride were injected to coagulate the algae. The microbubbles, whichwere generated at an air pressure of 450-550 kPa, caused the coagulated algae to float. The microbubble size was controlled at 36 ㎛, 100 ㎛, and 200 ㎛ by using different diffusers. The results of the lab-scale experiments on the flotation plant indicated that the average removal rate was about 90% or above for 11 mg/L, 22 mg/L, and 44 mg/L of polyaluminium chloride. On the other hand, in the pilot-scale experiment, the removal efficiency was 85%-95% in all dose ranges of polyalumium chloride and aluminium sulfate coagulants.

1
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KCI등재

1원심분리를 통한 음식물쓰레기 바이오차의 탈수 특성

저자 : 안광호 ( Kwang-ho Ahn ) , 이예은 ( Ye-eun Lee ) , 신동철 ( Dong-chul Shin ) , 정진홍 ( Jinhong Jung ) , 정윤아 ( Yoonah Jeong ) , 김이태 ( I-tae Kim )

발행기관 : 한국수처리학회 간행물 : 한국수처리학회지 30권 2호 발행 연도 : 2022 페이지 : pp. 3-10 (8 pages)

다운로드

(기관인증 필요)

초록보기

Various methods of technology for using food waste as energy have been developed, but their utility as fuel is low due to the salt concentration contained in food waste. As of 2019, the daily amount of domestic food waste is approximately 14,000 tons, and as the amount of food waste increases, it is necessary to develop technology for processing a large amount of food. Bio-char made from food waste can be a good fuel with high calorific value if salt is removed. In this study, a centrifugal separator was used to remove chloride ions from bio-char, and as a result of the experiment, the higher heating value(HHV) was improved through centrifugation. Food waste bio-char showed higher calorific value as the particle size was smaller, and higher calorific value was improved by 15~25% after centrifugation than before centrifugation. As for the chlorine component removal efficiency before and after centrifugation, the smaller the particle size, the higher the chloride ion removal efficiency. After centrifugation, the moisture of bio-char was 21.7~30.4%, and the ultimate analyzes of bio-char were found the most in the order of carbon, oxygen, hydrogen, and nitrogen, and no sulfur component was detected. As a result of water quality analysis, the dewatering water after centrifugation showed the degree of contamination of sewage was shown.

KCI등재

2초미세기포를 이용한 저수지 내의 조류 및 원인물질 제어

저자 : 정호진 ( Ho-jin Chung ) , 김종규 ( Jong-kyu Kim )

발행기관 : 한국수처리학회 간행물 : 한국수처리학회지 30권 2호 발행 연도 : 2022 페이지 : pp. 11-20 (10 pages)

다운로드

(기관인증 필요)

초록보기

This study evaluated the efficiency of algae control and the recurrence of algae over time using a water treatment system based on the generation of ultra-fine bubbles. As a result of the experiment, the pre-treated water that passed through the VCF pre-treatment system showed a slight chromaticity, but the organic and suspended substances and algae with a size of 10 μm or more were almost removed, and the concentration of COD, T-N, and T-P was reduced by 31%, 36%, and 19%. In the case of the final treated water, chlorophyll-a was reduced by 99.9%, and COD, T-N, and T-P, which are the causative substances of algae, were reduced by 95%, 96% and 94% compared to the raw water. As a result of monitoring the algae reproduction for 5 weeks, it was confirmed that the algae reproduction was controlled to be low for 5 weeks by ultra-fine bubbles, and the algae reproduction progressed after 5 weeks. Since ultra-fine bubbles can exist in water for a long time, if ultra-fine bubbles are continuously supplied to reservoirs or rivers where algae are generated, algae can be controlled eco-friendly without using chemicals. In addition, the water treatment system using ultra-fine bubbles is considered to be a new method to overcome the limitations of the algae removal method, such as eco-friendliness, persistence, and field applicability.

KCI등재

3불용성 전극을 이용한 착유세척수 전처리특성 연구

저자 : 왕영준 ( Youngjun Wang ) , 정종태 ( Jongtai Jung ) , 한상윤 ( Sangyun Han )

발행기관 : 한국수처리학회 간행물 : 한국수처리학회지 30권 2호 발행 연도 : 2022 페이지 : pp. 21-27 (7 pages)

다운로드

(기관인증 필요)

초록보기

Dairy farmers are required to have a purification facility that meets the legalization of unlicensed livestock and the increasingly stringent effluent water quality standards, with the alternative requirement of consignment treatment application. However, there is no defined standard model that addresses these requirements. Furthermore, even with a purification facility in place, many cases exist in which the purpose of the facility loses its significance because it does not meet the effluent water quality standard. For this reason, the National Institute of Livestock Research published the “Technical Guideline for Purification of Milk Washing Wastewater” in 2016, including data from the Livestock Environment Management Agency which evaluates methods relevant to dairy farmers, including the use of milking washing water purification facilities, livestock manure treatment facilities, and other related technical applications. However, a standard model has not yet been established. In this study, a non-aggregation electrolytic oxidation experiment was performed on raw water used as milking washing water. The results showed that the efficiency of the treatment of total nitrogen and ammonia nitrogen increased proportionally with treatment time, resulting in a removal rate of 81.8% of total nitrogen and 80.7% of ammonia nitrogen. In addition, the results demonstrated that the chromaticity item also increased proportionally to the oxidation time. When considering the water quality measurements of organic substances (BOD5 and CODMn), the treatment efficiency was determined to be limited, with the removal of organic substances limited by the single electrolysis process.

KCI등재

4미세기포를 이용한 Chlorella sp. 제거에 관한 연구

저자 : 조규진 ( Kyu-jin Cho ) , 박상원 ( Sang-won Park )

발행기관 : 한국수처리학회 간행물 : 한국수처리학회지 30권 2호 발행 연도 : 2022 페이지 : pp. 29-39 (11 pages)

다운로드

(기관인증 필요)

초록보기

This study carried out zeta potential measurements of Chlorella sp. under various solution conditions and investigated its characteristics through implementation of size control of the microbubbles in order to eliminate algae whichis problematic for both aquatic ecosystems and human activities. The DAF process was adopted and several coagulants were used to remove the Chlorella sp. A CCD Camera was used to measure and analyze the sizes of the microbubbles, and a fluorescent microscope was used to observe particles, algae species, and the community as a whole. Zeta potential behavior of the algae was analyzed using ELS-Z. Both lab-scale and pilot-scale experiments were conducted to test the flotation process. Polyaluminium chloride(PAC) coagulant was used, and the removal efficiency of the algae was assessed through chlorophyll-a analysis. In the lab-scale experiment, 2.2 mg/L, 11 mg/L, 22 mg/L, and 44 mg/L of polyaluminium chloride were injected to coagulate the algae. The microbubbles, whichwere generated at an air pressure of 450-550 kPa, caused the coagulated algae to float. The microbubble size was controlled at 36 ㎛, 100 ㎛, and 200 ㎛ by using different diffusers. The results of the lab-scale experiments on the flotation plant indicated that the average removal rate was about 90% or above for 11 mg/L, 22 mg/L, and 44 mg/L of polyaluminium chloride. On the other hand, in the pilot-scale experiment, the removal efficiency was 85%-95% in all dose ranges of polyalumium chloride and aluminium sulfate coagulants.

1
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