지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학위논문
- 저자정보
- 지도교수
- 김현우
- 발행연도
- 2021
- 저작권
- 전북대학교 논문은 저작권에 의해 보호받습니다.
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The consumption of meat is constantly increasing due to the continuous development of the economy and the increase of humanity. The scale of the livestock industry is also increasing, and the amount of livestock excreta (LE) produced is increasing every year. If LE is not properly treated and discharged into the water system, eutrophication and groundwater contamination may occur due to nitrogen and phosphorus in LE. To prevent this eutrophication, we propose a membrane filtration photobioreactor (MPBR) process. The experimental design of MPBR reduces the hydraulic retention time (HRT) from 2d to 1d and evaluates the removal performance of organic matter. It also evaluates membrane contamination reduction performance through backwashing. As a result, it was found that removal efficiency can be maximized with TN (84.9%) and TP (96.7%). In addition, in the case of COD and TOC, it was confirmed that there is a tendency to increase due to SMP and EPS in microalgae. In the case of backwashing of membrane contamination, the TMP reduction effect of distilled water (8.63%), H2SO4 (29.85%), and NaOH (37.09%) was confirmed. These results contribute to the treatment of LE by maximizing the removal efficiency of organic matter and efficient use of the membrane when MPBR is applied.
목차
1. Introduction 12. Theoretical background 32.1 Technology of membrane photobioreactor (MPBR) 32.1.1 Microalgae 42.1.2 Photobioreactor (PBR) 52.1.3 Membrane filtration (MF) 62.2 Livestock excreta 83. Materials and Methods 103.1 Preparation of sample and characterization 103.1.1 LE Characterization 103.1.2 Inoculum microalgae 113.2 Experimental set-up 123.2.1 Reactor set-up for livestock excreta (LE) treatment 123.2.2 Set-up for membrane washing 153.3 Analytical procedure 173.3.1 Total nitrogen (TN) and Dissolved organic carbon (TOC) 173.3.2 Total phosphorus (TP) and chemical oxygen demand (COD) 173.4 Analysis of membrane fouling characteristics 183.4.1 TMP (transmembrane pressure) 183.4.2 FE-SEM (field-emission scanning electron microscope) 183.4.3 EDX (energy-dispersive X-ray spectroscopy) 183.5 Membrane back washing 204. Results and Discussion 214.1 Removal efficiency of nutrient 214.1.1 TN and TP removal efficiency 224.1.2 COD and TOC removal efficiency 224.2 TMP change according to MPBR operation 234.3 Impact of membrane back washing 254.3.1 TMP changing according to the membrane back washing 254.3.2 Changes in the membrane surface after back washing with FE-SEM and EDX 265. Conclusion 346. References 35
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