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：

---

厌氧消化巴氏灭菌厕所现场粪便污泥处理


摘要 厌氧消化巴氏灭菌厕所（ADPL）是一种独立且能量中性的现场卫生系统，利用粪便污泥厌氧消化产生沼气，然后使用沼气在 65-75°C 的温度下对消化池出水进行巴氏灭菌，产生沼气。安全的废水可以在当地作为肥料重复利用。肯尼亚埃尔多雷特郊外的城郊地区有 17 名和 35 名居民的住宅区安装了两个 ADPL 系统。每个系统包括三个厕所，建在浮动圆顶消化器上方，以及一个热巴氏灭菌系统，用于对消化后的废水进行消毒。 ADPL 是简单的系统，没有移动部件，依靠重力引起的流动。这两个地点的采用都很成功，居民报告说，这些系统几乎没有气味或苍蝇。监测 ADPL 的沼气产量和巴氏灭菌系统中的温度。为 17 名和 35 名居民提供服务的 ADPL 平均分别产生 16 升和 11 升沼气/人/天（最多 20 升和 15 升沼气/人/天）。在最稳定运行期间，58% 和 87% 的采样日灭菌系统温度高于 65°C。定期分析处理后的废水的化学需氧量 (COD)、生化需氧量 (BOD)、总氨氮 (TAN)、pH 值和粪大肠菌群 (FC)。两个地点的出水平均含有 4,540 和 6,450 mg COD/L（比估计输入减少 85% 或 89%）、2,050 和 3,970 mg BOD/L、以及 2,420 和 4,760 mg NH3-N，灭菌罐中 FC（不可检测）减少超过 5 个对数。 该现场研究的结果表明，最低限度稀释的粪便污泥的厌氧消化可以提供足够的能量对消化器废水进行巴氏灭菌，并且 ADPL 可能是现场粪便污泥处理的合适选择。