The prospect of hazardous sludge reduction through gasification process

4th International Seminar on Sustainable Urban Development

地球科学;经济学

Hakiki, R.^1 ; Wikaningrum, T.^1 ; Kurniawan, T.^1

Faculty of Engineering President University, Jl. Ki Hajar Dewantara, Bekasi

17550, Indonesia^1

关键词: Disposal costs;    Economic assessments;    Gasification process;    Gasification technologies;    Government regulation;    Hazardous sludge;    Impact on the environment;    Industrial estate;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/106/1/012092/pdf
DOI  :  10.1088/1755-1315/106/1/012092

来源: IOP

【 摘 要 】

Biological sludge generated from centralized industrial WWTP is classified as toxic and hazardous waste based on the Indonesian's Government Regulation No. 101/2014. The amount of mass and volume of sludge produced have an impact in the cost to manage or to dispose. The main objective of this study is to identify the opportunity of gasification technology which can be applied to reduce hazardous sludge quantity before sending to the final disposal. This preliminary study covers the technical and economic assessment of the application of gasification process, which was a combination of lab-scale experimental results and assumptions based on prior research. The results showed that the process was quite effective in reducing the amount and volume of hazardous sludge which results in reducing the disposal costs without causing negative impact on the environment. The reduced mass are moisture and volatile carbon which are decomposed, while residues are fix carbon and other minerals which are not decomposed by thermal process. The economical simulation showed that the project will achieve payback period in 2.5 years, IRR value of 53 % and BC Ratio of 2.3. The further study in the pilot scale to obtain the more accurate design and calculations is recommended.