The ionic product of water under hydrothermal conditions is thousands of times that of normal temperature and pressure, so this technology can reproduce the diagenesis process of long accumulated rocks in the laboratory for a short time. This technology can solidify domestic waste incineration ash into products whose strength is higher than that of ordinary cement products and whose leaching of heavy metals and other harmful substances meets my country's environmental requirements.

(1) Simulate the diagenesis principle of accumulated rocks, hydrothermal and low-temperature solidification of domestic waste ash is a safe and reliable material with high strength (several times that of ordinary cement products) and low leaching of heavy metals (leaching meets national environmental standards);

(2) Achieve 100% reuse of domestic waste ash, that is, by adding only garbage fly ash (20%) to hydrothermal solidify the garbage bottom ash (garbage ash composition: about 20% fly ash and 80% bottom ash), maximize its utilization rate (100%);(International research is very rare)

(3) Through the activation treatment of domestic waste ash, low-temperature (100-150℃) normal pressure hydrothermal solidification of domestic waste ash can be achieved. The curing process is separated from the autoclave, and the process can be designed as a continuous process. Reuse and one-time investment costs are greatly reduced, making it easy to popularize.

Application situation or application prospects：Resource reuse of inorganic solid waste (waste incineration ash, fly ash, construction waste, river sediment, steelmaking slag, etc.).

The waste solidification that our research team has done includes: domestic waste incineration ash, fly ash, sediment deposited in the Yellow River, and steel-making slag. After hydrothermal treatment, these wastes can be cured into cement products with higher strength than ordinary ones, and the dissolution of harmful substances such as heavy metals meets my country's environmental requirements.