Abstract The Anaerobic Digestion Pasteurization Latrine (ADPL) is a self-contained and energy neutral on-site sanitation system using anaerobic digestion of fecal sludge to generate biogas and then uses the biogas to pasteurize the digester effluent at 65–75°C to produce a safe effluent that can be reused locally as a fertilizer. Two ADPL systems were installed on residential plots with 17 and 35 residents in a peri-urban area outside of Eldoret, Kenya. Each system comprised three toilets built above a floating dome digester and one heat pasteurization system to sanitize the digested effluent. ADPLs are simple systems, with no moving parts and relying on gravity-induced flows. Adoption at the two sites was successful, and residents reported that the systems had little to no odor or flies. ADPLs were monitored for biogas production and temperatures in the pasteurization system. ADPLs serving 17 and 35 residents produced on average 16 and 11 Lbiogas/person/day (maximum of 20 and 15 Lbiogas/p/d), respectively. The temperature in the sterilization system was greater than 65°C on 58% and 87% of sampling days during the most stable period of operation. Treated effluent was analyzed periodically for chemical oxygen demand (COD), biochemical oxygen demand (BOD), total ammonia nitrogen (TAN), pH, and fecal coliform (FC). On average, the effluent at the two locations contained 4,540 and 6,450 mg COD/L (an 85% or 89% reduction of the estimated input), 2,050 and 3,970 mg BOD/L, and 2,420 and 4,760 mg NH3-N, respectively, and greater than 5 log reductions of FC (nondetectable) in the sterilization tank. Results from this field study show that anaerobic digestion of minimally diluted fecal sludge can provide enough energy to pasteurize digester effluent and that the ADPL may be a suitable option for on-site fecal sludge treatment.

中文翻译：

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使用厌氧消化巴氏杀菌厕所进行现场粪便污泥处理

摘要 厌氧消化巴氏杀菌厕所 (ADPL) 是一种自给式、能源中性的现场卫生系统，它利用粪便污泥的厌氧消化产生沼气，然后使用沼气在 65–75°C 下对消化池流出物进行巴氏消毒，以产生可作为肥料在当地重复使用的安全流出物。两个 ADPL 系统安装在肯尼亚埃尔多雷特郊外郊区的住宅地块上，分别有 17 和 35 名居民。每个系统包括三个建在浮动圆顶消化器上方的厕所和一个加热巴氏杀菌系统，用于对消化后的污水进行消毒。ADPL 是简单的系统，没有移动部件并依赖于重力引起的流动。这两个地点的采用是成功的，居民报告说这些系统几乎没有气味或苍蝇。监测 ADPL 的沼气产量和巴氏杀菌系统中的温度。为 17 和 35 位居民提供服务的 ADPL 分别平均生产 16 和 11 Lbiogas/人/天（最多 20 和 15 Lbiogas/p/d）。在最稳定的运行期间，58% 和 87% 的采样日灭菌系统中的温度高于 65°C。定期分析处理后的污水的化学需氧量 (COD)、生化需氧量 (BOD)、总氨氮 (TAN)、pH 值和粪便大肠菌群 (FC)。平均而言，两个地点的出水分别含有 4,540 和 6,450 毫克 COD/L（估计输入量减少 85% 或 89%）、2,050 和 3,970 毫克 BOD/L 以及 2,420 和 4,760 毫克 NH3-N，并且灭菌罐中 FC（不可检测）减少 5 个对数以上。