Ascaris lumbricoides is the most common helminth of human health importance, and the most resilient helminth found in faecal sludge. There are numerous types of sludge treatments; however, heating and drying are most commonly used for pathogen inactivation. Ascaris suum eggs were heated in a water bath at 40–55 °C for 10 seconds to 60 minutes in water, as well as heated in both urine diversion dry toilet and ventilated improved pit latrine sludge at 40 °C, 60 °C and 80 °C for times ranging from 5 seconds to 120 minutes. Eggs were also spiked into sludges of different moisture contents and incubated over 12 weeks at 25 °C, with samples analysed weekly. Overall, we concluded that eggs were inactivated at temperatures >50 °C, that the temperature–time relationship directly impacted the efficacy of heat treatment, that suspension medium had no effect, and that eggs survived better in wet rather than dry sludges.

虫是人类健康中最常见的蠕虫，也是粪便污泥中最有韧性的蠕虫。有多种类型的污泥处理方法。但是，加热和干燥最常用于病原体灭活。虫将鸡蛋在40–55°C的水浴中在水中加热10秒钟至60分钟，并在尿液转移干燥厕所和通风良好的坑厕污泥中分别在40°C，60°C和80°C加热时间从5秒到120分钟不等。鸡蛋也被掺入不同水分含量的污泥中，并在25°C下温育12周，每周分析样品。总的来说，我们得出的结论是，鸡蛋在> 50°C的温度下会失活，温度与时间的关系直接影响热处理的效果，悬浮介质没有影响，鸡蛋在湿污泥中的存活比干污泥中的存活更好。