Abstract：
The subsequence anaerobic digestion (AD) of dewatered sludge (DWS) from wastewater treatment plants necessitates an emphasis on enhancing methane production and dewaterability. The effect of different nanobubble water (NBW) on AD of DWS was investigated under mesophilic conditions. Cumulative methane production was improved by 9.0-27.8% with the addition of different NBW (Air, CO2, He, and N2). NBW improved methanogenic performance by significantly enhancing the hydrolysis of sludge AD. Results from the digestate, the capillary suction time, specific resistance to filtration, and moisture content could be decreased by 14.6-18.2%, 18.8-29.6%, and 13.6-19.5%, respectively. The addition of NBW can improve the dewaterability of digestate by reducing the digestate particle size and increasing the zeta potential of digestate. The addition of NBW significantly increased methane production and improved dewaterability in AD; Air-NBW showed the best improvement.
摘要：
污水处理厂脱水污泥（DWS）的后续厌氧消化（AD）需要强调提高甲烷产量和脱水能力。在中温条件下研究了不同纳米气泡水（NBW）对DWSAD的影响。通过添加不同的NBW（空气，二氧化碳，他，和N2）。NBW通过显著增强污泥AD的水解来提高产甲烷性能。消化结果，毛细管抽吸时间，特定的过滤阻力，水分含量可降低14.6-18.2%，18.8-29.6%，13.6-19.5%，分别。添加NBW可以通过减小消化物颗粒尺寸和增加消化物的ζ电位来改善消化物的脱水能力。NBW的添加显着增加了AD的甲烷产量并改善了脱水能力；Air-NBW表现出最佳的改善。
