基于不同破解方法的市政污泥厌氧消化产气量优化

污泥溶胞破解是提高污泥厌氧消化产气量的重要手段。实验比较了热预处理、碱预处理、热碱预处理以及电化学热处理4种破解方法对市政污泥厌氧消化产气量的优化效果，通过分析比较沼气累积产量、日产气量、日产气速率和CH4在沼气中的含量占比等指标得出实验结果和结论。结果表明，不同的破解方法对市政污泥厌氧消化产气量的优化程度是不同的，其中，电化学预处理破解方式的沼气累积产量最多，为648 L·kg-1（以VS计），同时其CH4在沼气中的含量也最多，从5 d后的56.2%一直持续上升到40 d后的64.8%，表明该种方式对于市政污泥厌氧消化产气量的优化是较为理想的。

Biogas production optimization from sludge anaerobic digestion based on different sludge disintegration methods

As an efficient method to improve biogas production from sludge anaerobic digestion, sludge disintegration methods including thermal, alkali, hot alkali, and electrochemical pretreatments were compared by analyzing the indicators of biogas accumulative production (Bap), everyday biogas production (Bed), biogas production rate (Br), and CH4 content in the biogas. The results showed that different sludge disintegration methods vary greatly in their effect on biogas production from sludge anaerobic digestion, and among them, the electrochemical pretreatment method was dominant with a Bap of 648 L·kg-1(caculated by VS) and a CH4 content that increased from 56.2% after 5 days to 64.8% after 40 days.