Graduate School of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8572, Japan.
Key Laboratory of Coal Gasification and Energy Chemical Engineering of Ministry of Education, East China University of Science and Technology, No. 130 Meilong Road, Shanghai 200237, China.
Waste Manag. 2018 Jul;77:166-171. doi: 10.1016/j.wasman.2018.05.018. Epub 2018 May 16.
Compared with composting, hydrothermal treatment (HTT) technology can dramatically shorten the duration for manure waste treatment. This study firstly investigated the effect of HTT on solubilization of N, P and organics from swine manure, and then evaluated the phytotoxicity of liquid product from hydrothermally treated manure by seed germination test. Results show that 98% of N in manure could be converted into soluble form after HTT at 200 °C for 60 min. Soluble P in hydrothermally treated manure (at 150 °C for 60 min) was 2.7 times that in raw manure. The germination indices (GI) were all greater than 100% when the liquid product (from HTT at 150 °C for 60 min) or its diluted samples being used. Results from this study suggest that HTT could be a promising technology for producing safe and value-added liquid fertilizers from swine manure.
与堆肥相比，水热处理（HTT）技术可以大大缩短粪便处理的时间。本研究首先考察了 HTT 对猪粪中氮、磷和有机物的溶解效果，然后通过种子发芽试验评价了水热处理后粪液的植物毒性。结果表明，在 200°C 下处理 60 分钟后，粪便中 98%的氮可转化为可溶形式。水热处理后的粪液（150°C 处理 60 分钟）中的可溶性磷是原粪的 2.7 倍。当使用液体产物（150°C 处理 60 分钟的 HTT 产物）或其稀释样品时，发芽指数（GI）均大于 100%。本研究结果表明，HTT 可能是一种很有前途的技术，可用于从猪粪中生产安全且有附加值的液体肥料。
