The invention discloses a gasified 
fly ash dehydration treatment technique. The collaborative 
dehydration processes of multiple energy fields of 
chemical energy, ultrasonic 
waves, 
heat energy, 
mechanical energy, 
electric energy and the like are integrated, the diameters of capillary micropores of 
dehydration medium 
ceramic filter discs are small, capillary tubes are distributed densely, the speedof filtrate passing through a filter plate is high, almost all gasified 
fly ash cannot be subjected to penetration filtering, and the dehydration and filter effects are good; through unique scraping and spray-cleaning operation, sediments can be cleared in time, frequent replacement caused by damage or blockage is avoided, and equipment can operate continuously for a long term and is high in efficiency; and the 
ceramic filter discs are provided with the micropores generating a capillary effect, the micropores can be always kept in the state of being full of liquid, no air penetrates through the 
ceramic filter discs, thus the high vacuum degree can be kept for a long time, and thus dehydration 
energy consumption is low. According to the gasified 
fly ash dehydration treatment technique, compared with gasified fly ash dehydrated by a filter-cloth-type vacuum filter commonly used at present, the 
water content of the dehydrated gasified fly ash is decreased by 15-20%, the 
water quality of the filtrate is improved significantly, the content of 
suspended matter is 6-16 mg / L, the maximum 
turbidity is 2.95 NTU, and PH is 5.0 to 9.0.