Doctoral School of Environmental Sciences, University of Szeged, Dugonics ter 13, 6724, Szeged, Hungary E-mail:
Gábor Dénes College, Fejér Lipót u. 70, 1119, Budapest, Hungary.
Water Sci Technol. 2020 Mar;81(6):1231-1241. doi: 10.2166/wst.2020.216.
In this study, ultrasound disruption was employed to enhance the efficiency of microwave disintegration of dairy sludge. Results revealed that ultrasound specific energy input of 1,500 kJ/kg TS was found to be optimum with limited cell lysis at the end of the disruption phase. Biodegradability study suggested an enhancement in suspended solids reduction (16%) and biogas production (180 mL/gVS) in floc disrupted (deflocculated) samples when compared to sole microwave pretreatment (8.3% and 140 mL/gVS, respectively). Energy assessment to attain the 15% optimum solubilization revealed a positive net production of 26 kWh per kg sludge in deflocculated samples compared to 18 kWh in flocculated (sole microwave) samples. Thus, ultrasound disruption prior to microwave disintegration of dairy sludge was considered to be a feasible pretreatment technique.
在这项研究中，采用超声破坏来提高乳制品污泥微波分解的效率。结果表明，在破坏阶段结束时，超声比能输入为 1500kJ/kgTS 被发现是最佳的，此时细胞裂解有限。与单独的微波预处理（分别为 8.3%和 140mL/gVS）相比，生物降解性研究表明，絮体破坏（解絮）样品中悬浮固体减少（16%）和沼气产生（180mL/gVS）得到了增强。为了达到 15%的最佳溶解，能量评估显示，与絮体（仅微波）样品相比，在解絮样品中，每公斤污泥的正净产量为 26kWh。因此，在乳制品污泥的微波分解之前进行超声破坏被认为是一种可行的预处理技术。
