WANG Hua-jin.Engineering Application of Wet Anaerobic Digestion and Biogas Production Technology for Full-scale Food Waste[J].China Water & Wastewater,2021,37(8 8):95-100.
Engineering Application of Wet Anaerobic Digestion and Biogas Production Technology for Full-scale Food Waste
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第37卷
Number:
8 8
Page:
95-100
Column:
Date of publication:
2021-04-17
- Keywords:
- food waste; gutter oil; anaerobic digestion
- Abstract:
- A food waste anaerobic digestion treatment project in Xiaoshan District, Hangzhou City was designed to dispose the municipal waste of 200 t/d food waste and 20 t/d gutter oil. The mainstream process route of pre-treatment+anaerobic digestion+biogas utilization was adopted in the project. According to the functional requirement, the project was divided into six major systems: pre-treatment system, gutter oil purification system, anaerobic digestion and dewatering system, sewage treatment system, biogas purification and utilization system, and auxiliary production system. After pre-treatment, food waste was divided into three streams of materials: oil, organic slurry and solid slag. Oil extracted from food waste and gutter oil was sold as crude oil. The organic slurry and solid slag was treated by anaerobic digestion. Biogas produced from anaerobic digestion was partially used as boiler fuel after purification in the plant，and the rest part was used for the generation of electricity power. The total investment of the project was 153.864 3 million yuan, and the investment per ton was approximately 698 000 yuan. The operation exhibited good performance and was well controlled. CSTR anaerobic digestion process showed stable operation performance with high production rate of biogas and high quality of effluent.
Last Update:
2021-04-17