Enhanced anaerobic digestion of activated sludge, food waste and their mixture by a highly efficient enzymatic pretreatment
A fungal mash rich in various hydrolytic enzymes was first produced in situ from food waste,and was used for the ultra-fast hydrolysis of food waste,waste activated sludge and their mixture for enhanced anaerobic digestion.Results showed that 15.8 g/L of soluble chemical oxygen demand (SCOD) and 104.3 mg/L of free amino nitrogen (FAN) were produced after 8-hour pretreatment,together with 31.2% of volatile solids (VS) reduction.It was also found that the methane production yield of mixed waste activated sludge and food waste with the pretreatment by the fungal mash was 3.4-and 2.3-folds higher than that of the waste activated sludge without and with the pretreatment.A total 69.7% of VS reduction was achievable in the proposed integrated system with the enzymatic pretreatment.
Activated sludge Food waste Fungal mash Co-digestion Enzymatic pretreatment
Yingqun Ma Yao Yin Yu Liu
Advanced Environmental Biotechnology Centre, Nanyang Environment & Water Research Institute, Nanyang Advanced Environmental Biotechnology Centre, Nanyang Environment & Water Research Institute, Nanyang
国际会议
The 15th IWA World Conference on Anaerobic Digestion( 第15届IWA世界厌氧大会)
北京
英文
313-316
2017-10-17（万方平台首次上网日期，不代表论文的发表时间）