PDF《密封厌氧发酵池-在中国养猪场的应用》

22 活塞式流动发酵器照片 Photograph of a Plug-Flow Digester 活塞式流动发酵器

23 中国发酵器 A Chinese Digester

24 沼气系统构成 Biogas System Components 废弃物 Waste 进水系统(集粪池) Influent Structure (Reception Pit) 发酵池 Digester 污水贮存 Effluent Storage 沼气处理 (消除气, 压缩等) Biogas Processing (Moisture Removal, Compression, etc.) 长明灯 Flare 沼气利用(发电机组、锅 炉或高炉) Biogas Utilization (Engine-Generator Set or Boiler or Furnace) 最终处理 Ultimate Disposal 沼气 Biogas

25 太阳能引燃的、能采集数据的长明灯 Flare with Solar Powered Ignition and Data Collection

26 以沼气为燃料的发电机组 Biogas Fueled Engine-Generator Set

27 密封发酵池设计 Covered Lagoon Design ? 操作容积的设计应以每日每千立方米最高挥发性固体负 荷率,或是生产适量甲烷所需的最少水力停留时间为基 础. ? Design operating volume should be based on either the maximum daily volatile solids (VS) loading rate per 1,000 m3 or the minimum hydraulic retention time (HRT) required for adequate methane production. ? 最高挥发性固体负荷率和最少水力停留时间均随气候变 化,见如下两个公式. ? Both the maximum VS loading rates and minimum HRTs vary with climate as shown in the following figures.

28 流程设计: 确定发酵池所需的操作容积 Process Design: Determining the Required Lagoon Operating Volume 以挥发性固体负荷率为基础: Based on VS loading rate: ? 所需操作容积, m3 = (挥发性固体负荷率, kg/天) / 最大设计挥发性固体 负荷率, kg/1,000 m3/天?Required operating volume, m3 = (VS loading rate, kg/day)/maximum design VS loading rate, kg/1,000 m3/day 以水力停留时间为基础: Based on HRT: ? 所需操作容积,m3 = (进水流量, m3/天)/(最少设计水力停留时间, 天) ? Required operating volume, m3 = (influent flow rate, m3/day)/(minimum design HRT, days) ? 设计的操作容积应是以上两个值中较大的一个. ? The design operating volume is the larger of the two values.

29 美国密封厌氧发酵池最高挥发性固体负荷率,kg挥发性固体 /1,000 m3/天Covered Anaerobic Lagoon Maximum Volatile Solids Loading Rates for the U.S., kg VS/1,000 m3/day.

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30 中国密封厌氧发酵池最高挥发性固体负荷率,kg挥发性固 体/1,000 m3/天. Covered Anaerobic Lagoon Maximum Volatile Solids Loading Rates for China, kg VS/1,000 m3/day.

31 美国密封厌氧发酵池最少水力停留时间,天Covered Anaerobic Lagoon Minimum Hydraulic Retention Times for the U.S., da........