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분리막 공정을 이용한 축산분뇨 처리장 방류수의 고도처리

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Alternative Title
Advanced Treatment of Effluent from Livestock Night Soil Treatment Facility Using Membrane Separation Process
Abstract
This study is to develope the process suitable for the advanced treatment of the effluent from the livestock night soil treatment facility (biogas plant). To make advanced treatment of the liquid fertilizer, the effluent of a biogas plant, NF(nanofiltration)/RO(reverse osmosis) process was used. And three different pretreatments, MF(microfiltration), and MBR(membrane bioreactor) without and with biomedia, were tested.
The T-N and NH3-N concentration of the liquid fertilizer were 3,870 mg/L and 3,540 mg/L respectively, it was found that almost the whole nitrogen of the liquid fertilizer was composed of ammoniacal nitrogen.
There was no difference observed in the removal of COD, T-N, T-P and NH3-N irrespective of the dosages of biomedia. But TMP(transmembrane pressure) of MBR with biomedia increased slowly during the operation time, while that of MBR without biomedia increased rapidly at the initial time.
The removal of COD, T-N, T-P and NH3-N were 71.6%, 25.0%, 58.3% and 18.0% by MF, and 58.7%, 30.9%, 66.7% and 28.1% by MBR, respectively. In the removal of the nutrient, MBR process was more effective than MF.
When the liquid fertilizer was pretreated by MBR with biomedia, the removal of COD, T-N, T-P and NH3-N were 99.8%, 86.5%, 99.8% and 86.3% by NF, and 99.9%, 86.8%, 99.8% and 86.5% by RO, respectively.
Compared with the effluent quality standards of the livestock night soil treatment facility, the water quality treated by MBR and NF/RO process met the standard for COD and T-P, but exceeded the permitted standard for T-N. In order to meet the effluent quality standard for T-N, it is necessary to change the MBR operation cycle for the enhancement of T-N removal.
Author(s)
김주혜
Issued Date
2012
Awarded Date
2012. 8
Type
Dissertation
URI
http://dcoll.jejunu.ac.kr/jsp/common/DcLoOrgPer.jsp?sItemId=000000005986
Alternative Author(s)
Kim, Joo-Hye
Affiliation
제주대학교
Department
대학원 에너지응용시스템학부 에너지화학공학전공
Advisor
이호원
Table Of Contents
SUMMARY ⅰ
목 차 ⅱ
LIST OF TABLES ⅴ
LIST OF FIGURES ⅵ


Ⅰ. 서론 1


Ⅱ. 이론적 배경 3
1. 축산분뇨 처리공정 3
2. 막분리 공정 5
1) 막분리법 5
(1) 역삼투 (Reverse Osmosis, RO) 6
(2) 나노여과 (Nanofiltration, NF) 6
(3) 한외여과 (Ultrafiltration, UF) 7
(4) 정밀여과 (Microfiltration, MF) 7
2) 막모듈 (membrane module) 7
(1) 관형 모듈 (tubular type module) 8
(2) 모세관형 모듈 (capillary type module) 9
(3) 중공사형 모듈 (hollow fiber type module) 10
(4) 판틀형 모듈 (plate and frame type module) 10
(5) 나권형 모듈 (spiral wound type module) 11


3) 막오염 및 제어 12
(1) 막오염 12
(2) 막오염 제어 13
3. 막생물반응기 16
1) 개요 16
2) 막오염 제어 18


Ⅲ. 실험장치 및 방법 19
1. 실험장치 19
2. 분석방법 23
1) SDI 테스트 23
2) 막여과저항 23
3) 화학적 산소요구량(COD) 24
4) 영양염류 25
5) 활성슬러지 25
6) 용존 산소(DO) 26


Ⅳ. 결과 및 고찰 27
1. MF와 NF/RO 혼성공정의 여과성능 및 처리효율 27
1) 투과선속(permeate flux) 27
2) SDI 33
3) 처리효율 33
4) 처리수 수질 비교 34
2. MBR과 NF/RO 혼성공정의 여과성능 및 처리효율 41
1) MBR과 NF/RO의 여과성능 41


2) 처리효율 47
3) 처리수 수질 비교 48


Ⅴ. 결 론 61


참고문헌 63
Degree
Master
Publisher
제주대학교 대학원
Citation
김주혜. (2012). 분리막 공정을 이용한 축산분뇨 처리장 방류수의 고도처리
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Faculty of Applied Energy System > Energy and Chemical Engineering
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