Rural populations in Tanzania use unsafe drinking water from unimproved water sources which are inadequately treated using plant seed powder. The effectiveness of defatted crude seed extract (dCSE) of Moringa oleifera along with water filtration and solar disinfection (SODIS) for rural household water treatment was investigated. The performance of dCSE in turbidity and bacteria reduction was evaluated in 20 L buckets using river water with varied turbidities. Coagulation–flocculation processes were conducted using different dosages of 5% (Weight/Volume) dCSE. Optimum dosage for maximum turbid removal was established after 2–6 h of settling time. Optimum dosages of dCSE were 20, 30 and 80 mL/20 L for water with a turbidity of 150, 450 and 1,000 NTU with turbidity removal efficiencies of 98, 99 and 99%, respectively. The filtration process was able to remove about 66% of suspended solids from pretreated water by dCSE after coagulation/flocculation/sedimentation. SODIS of pretreated water in black painted and unpainted bottles removed 99 and 97.6%; 99.9 and 98.6% of total and fecal coliforms after 6 h of sunlight exposure, respectively. The pH and color of treated water were within Tanzania Standards. This study recommends dCSE, filtration and SODIS for use at household level for water treatment and storage using pots.

坦桑尼亚的农村人口使用来自未经改善的水源的不安全饮用水，这些水源未经植物种子粉充分处理。辣木脱脂粗种子提取物 (dCSE) 的有效性对农村家庭水处理中的水过滤和太阳能消毒 (SODIS) 进行了调查。dCSE 在浊度和细菌减少方面的性能在 20 L 桶中使用不同浊度的河水进行评估。使用不同剂量的 5%（重量/体积）dCSE 进行混凝-絮凝过程。在 2-6 小时的沉降时间后确定了最大程度去除混浊的最佳剂量。对于浊度为 150、450 和 1,000 NTU 的水，dCSE 的最佳剂量为 20、30 和 80 mL/20 L，浊度去除效率分别为 98、99 和 99%。在混凝/絮凝/沉淀之后，过滤过程能够通过dCSE从预处理水中去除大约66%的悬浮固体。黑色油漆和未油漆瓶子中预处理水的 SODIS 去除率 99% 和 97.6%；99.9 和 98。暴露在阳光下 6 小时后，总大肠菌群和粪便大肠菌群分别为 6%。处理过的水的 pH 值和颜色在坦桑尼亚标准内。本研究建议在家庭级别使用 dCSE、过滤和 SODIS，用于使用盆进行水处理和储存。