0 引言
1 材料与方法
1.1 实验材料与装置
Table 1 Basic properties of landfill leachate and inoculated sludge表 1 垃圾渗滤液与接种污泥的基本性质 |
指标 | 单位 | 垃圾渗滤液(n = 13) | 接种污泥(n = 2) |
---|---|---|---|
总化学需氧量(total chemical oxygen demand, TCOD) | g/L | 92.2 ± 10.3 | / |
溶解性化学需氧量(solluted chemical oxygen demand, SCOD) | g/L | 64.3 ± 5.1 | / |
氨氮(ammonia nitrogen, NH4+-N) | g/L | 1.9 ± 0.2 | / |
总挥发性脂肪酸(total volatile fatty acid, TVFA) | g/L | 3.1 ± 0.1 | 0.12 ± 0.3 |
总碱度(total alkalinity, TA) | g/L | 8.7 ± 0.6 | / |
pH | / | 5.93 ± 0.2 | 8.1 ± 0.04 |
总固体(total solids, TS) | g/L | 52.3 ± 1.3 | 25.6 ± 0.2 |
挥发性固体(volatile solids, VS) | g/L | 26.0 ± 0.8 | 12.3 ± 0.1 |
悬浮性固体(suspended solids, SS) | g/L | 1.9 ± 0.1 | / |
挥发性悬浮固体(volatile suspended solids, VSS) | g/L | 1.2 ± 0.1 | / |
注:“/”表示未检测;“n”表示检测次数。 |
Fig. 1 Schematic diagram of AnMBR reactor图1 AnMBR反应器装置示意图 |
1.2 分析方法
1.3 计算公式
2 结果与讨论
2.1 连续实验的COD去除性能
Fig. 2 (a) COD concentration of influent and effluent water; (b) COD removal rate; (c) VFA concentration; (d) TA and pH图 2 (a)进出水COD浓度;(b)COD去除率;(c)VFA浓度;(d)总碱度和pH |
Fig. 3 Material balance analysis: (a) COD concentration ratio of influent and effluent water; (b) sludge concentration of influent and effluent water; (c) SCOD concentration ratio of effluent图3 物料平衡分析:(a)进出水COD浓度比例;(b)进出水污泥浓度;(c)出水SCOD浓度比例 |
Fig. 4 Gas production performance and degradation performance under continuous operation: (a) gas yield; (b) gas composition; (c) COD ratio图4 连续运行下的产气性能与降解性能:(a)气体产率;(b)气体成分;(c)COD比例 |
2.2 膜过滤性能
Fig. 5 Membrane filtration performance under continuous operation: (a) TMP and permeability; (b) sludge concentration图 5 连续运行下的膜过滤性能:(a)TMP和渗透率;(b) 污泥浓度 |
Fig. 6 Relationship between TMP and different factors图6 TMP与不同因素之间的关系 |