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바실러스 공정 분뇨처리 슬러지를 이용한 음식폐기물 악취제거
정병기 ( Byeong Gi Jung ),성다해 ( Da Hae Seong ),빈정인 ( Jung In Bin ),이병헌 ( Byung Hyun Lee ) 한국수처리학회 2014 한국수처리학회지 Vol.22 No.5
Odor from food waste have an aesthetic effect on neighboring residents. Therefor it has been continued effort to reduce the problem. The purpose of this study was to decrease food waste odor by using nightsoil treatment sludge including Bacillus (SB). Statistical method by Minitab software was used for effective experiment plan and describing the result. Surface response methods with central composite design (CCD) was used for implementing. Utilizing CCD, one of the experimental design, the impact of three variables such as temperature, time and SB was estimated. Statistical analyses (analysis of variance, ANOVA) of the results showed that three variables influenced reduction of food waste odor (p<0.05). The coefficient of determination (R2) for odor reduction was calculated to be 0.9613, indicating that 96.13% of the variation was explained by the model. Through the analysis, input concentration of SB was found to be the most significant factors and followed by time and temperature.
이병헌 ( Byung Hun Lee ),송근영 ( Guen Young Song ),빈정인 ( Jung In Bin ) 한국수처리학회 2015 한국수처리학회지 Vol.23 No.6
Since 2014 in Korea ocean dumping was banned, and the treatment of organic waste on land emerged as one of the social problems. The pretreatment methods for anaerobic digestion such as ultrasonication, heat, acid, and base has been widely used to enhance solubilization and methane production. Ultrasonication studies were conducted to evaluate characteristics and solubilization of food waste (FW) and sewage sludge waste (SW) in three experimental parameters: ultrasonication time (min), power density (W/mL), and mixing ratio (% FW/SW). There was no significant change in TCOD, TS, and VS after ultrasonication, while SCOD was increased by an average of 12.9 %. It was because ultrasonic pretreatment allowed to solubilize the particulate matter. The highest SCOD increase rate of 26.1 % and the maximum SCOD increase of 5,589 mg/L was observed in the case 7 (10 min, 1.0 W/mL, 0 % FW/SW) and case 14 (16 min, 1.6 W/mL, 83 % FW/SW), respectively. The average solubilization rate was 19.0 %, and the highest solubilization rate of 37.5 % was achieved in the case 15 (19 min, 1.0 W/mL, 50 % FW/SW). The solubilization rate was increased with increasing ultrasonication time and mixing ratio. Food waste is expected to be effectively treated by the anaerobic digestion combined ultrasonic pretreatment.