The effect of mixing ratio variation of sludge and organic solid waste on biodrying process

4th International Seminar on Sustainable Urban Development

地球科学;经济学

Nasution, A.C.^1 ; Kristanto, G.A.^1

Civil Engineering Department, Environmental Engineering Study Program, Universitas Indonesia, Depok, Indonesia^1

关键词: Bio-drying;    Final moisture content;    Initial Moisture Content;    Mixing ratios;    Organic solid wastes;    Organic wastes;    Sludge cake;    Temperature profiles;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/106/1/012117/pdf
DOI  :  10.1088/1755-1315/106/1/012117

来源: IOP

【 摘 要 】

In this study, organic waste was co-biodried with sludge cake to determine which mixing ratio gave the best result. The organic waste was consisted of dried leaves and green leaves, while the sludge cake was obtained from a waste water treatment plant in Bekasi. The experiment was performed on 3 lab-scale reactors with same specifications. After 21 days of experiment, it was found that the reactor with the lowest mixing fraction of sludge (5:1) has the best temperature profile and highest moisture content depletion compared with others. Initial moisture content and initial volatile solid content of this reactor's feedstock was 52.25% and 82.4% respectively. The airflow rate was 10 lpm. After biodrying was done, the final moisture content of the feedstock from Reactor C was 22.0% and the final volatile solid content was 75.9%.The final calorific value after biodrying process was 3179,28kcal/kg.