고온호기발효장치를 이용한 조류 분해 및 가스 발생특성

• 영문명: The properties of algal degradation and gas emission by thermophilic oxic process.
• 발행기관: 유기성자원학회
• 저자명: 강창민(Changmin Kang)
• 간행물 정보: 『유기물자원화』제7권 제2호, 57~64쪽, 전체 8쪽
• 주제분류: 공학 > 환경공학
• 파일형태: PDF
• 발행일자: 1999.12.30

국문 초록

본 연구는 고온호기발효법에 의해 미세조류(부영양화호에서 회수한)릎 처리할 경우. 처리조건의 변화에 따른 지구온난화가스의 발생특성을 살펴，가스억제를 위한 효과적 처리조건을 검토하는 것이다. 회분 및 연속실험을실시하여, 이하의 결과가얻어졌다. 회분실험에서는 폐식용유의 첨가유무 및 공기주입 량에 따른 발효효과를 검토했다. 폐식용유 첨가의 경우, 받열량의 증가에 따라 처리불질의 수분증발에 효과적 이었다. 또 공기주입량의 변화에 따라，유기물제거는 공기량이 100nú/min일 때 가장 효과적이었고. 발생가스중 CO2는 실험초기에반 영향을 받았고. N₂0는 실험중전혀 영향을 받지 않았다. 또 CH₄는 공기공급이 부족한 초기에 겪지 되었으나. 그 후 발생되지 않았다 연속실험에서 공기량을 1001미/min에 고정한 후，고분자응집제의 첨가유무 및 수분조정제의 종류에 따른 가스발생특성을 비교 검토했다. N20는 고분자응집제 (PAC) 첨가 및 수분조정제의 종류에 의해 가스발생량에 영향을 받지 않았으나, CO₂의 경우는 약간의 영향을 받았다. CH₄는 검출되지 않았다.

영문 초록

The purpose of this study is to establish effective conditions for control1ing CH4• N20 emission from organic waste/wastewater treatment processes. Continuous and batch experiments were conducted to treat the micro algae from polluted and eutrophicated lakes through the thermophilic oxic process. The microalgae used were mainly Microcystis sp. (collected from eutrophic lake) and Chlorella sp.. (cultured in laboratory) Wasted cooking oil was added by aid-heating source. Physico-chemical components of sludges and microalgae were analyzed. In batch experiments. air supply was changed from 50ml/min to 150ml/min. The temperature. water content and drained water were affected by the air flow rate at initial stage. However. there was almost no influence of air flow rate on them in middle and last stages. At air flow rate of 100ml/min. the degradation rate of organic material was higher than that at other air flow rates. CO2 concentration in exhaust was proportional to the strength of aeration. especially at initial stage when degradation was active. CH4 with low concentration was detected only at starting stage when air diffusion was not enough. N20 production was not affected by variation of air supply. In continuous experiments no matter what the dewate1'ing methods (with PAC and without PAC) and media (wood chip and 1'eed chip) were changed. N20 was almost not affected by variation of injected air. Result showed that the reed chips using fo1' lake purification could be used as media for thermophilic oxic process in lake and marshes area. CO2 concentration wa5 not 50 much affected by the change of dewatering methods and media types. CH4 was not detected in the experimental period. 80 it can be shown that the thermophilic oxic process had been well operated in wide handling conditions regardless of media and dewatering methods.

목차

1. Introduction

2. Materials and Methods

3. Results and Discussion

4. Conclution and Prospect

키워드

고온호기공정 미세조류 공기량 CO₂N₂0 CH₄ global climate warming thermophilic oxic process CO₂ N₂0 CH₄