고온 호기법을 이용한 Poly Aluminum Chloride에 의해 응집된 조류의 분해특성

Degradation Characteristics of Algae Coagulated with Poly Aluminum Chloride by Thermophilic Oxic Process

공기유입속도가 2171 . m-3• min-1 이었을 경우， 고온 · 호기조를 이용하여 PAC로 응집 , 탈수된 조류의 분해 특성을 관찰한 결과 다음과 같이 요약할 수 있다.10% 폐 식용유의 혼합조건이 본 연구에서 최적 조건으로 용도는 55"C 이상을 나타내었고， 수분은 55%를 일정하게 유지하였으며. COz의 농도는 최고 3.7%. 투입 탄소량의 92%가 CO2-C로 변환하였다. 적정한 폐식용유의 혼합은 미생물의 활동을 활발하게 하였지만 과도한 혼합은수분증발로건조상태로되었으며 오히려 분해 활성에 저해 영향을주었다. 처리가종료된 담체는고농도의 알루미늄이 축적되어 있으므로 별도의 처리가요구된다.

The biodegradation of algae coagulated with poly aluminum chlorideCPAC) was investigated by using the thermophilic oxic process. The compositions of coagulated a1gae were 83.5% of water content. 24.6% of ash. 32% of organic carbon with in tota1 solid. respectively. In present study. food waste oil was used for the increment of ca10rie of mixtures in order to accelate the microbia1 activity. As a resu1t. the maximum temperature of mixtures was higher than 50"C when the mi피ng ratio of food oil was over 10%. However the temperature indicated the lower than 50"C when conditions of no mi잉ng with waste food 이1. and 5% of mixing ratio. Therefore. the optimum condition was 10% of the mixing ration at 217 l . m-3• min-1 of air supply rate. The conversion efficiency of carbon was highest as 92% at the optimum condition. And then water was eva1uated from imxture without accumulation at 10% of mixing ratio. The thermophilic oxic process well conducted that is good process for the treatment of waste a1gae without effluents however it has to consider the retreatment of accumu1ated aluminum in the reactor.