Excess sludge cracking method

The invention discloses a residual sludge cracking method which comprises the following steps: (1) taking gasified slag, roasting, cooling, soaking in a sodium hydroxide aqueous solution, heating, cooling, and drying the treated solid; adding sodium carbonate and nickel nitrate into the dried solid, carrying out water bath heating while continuously stirring, and separating, cleaning and drying the precipitate after the reaction is finished, so as to obtain a modified gasification slag material; and (2) putting excess sludge into a light-transmitting reactor, adding the modified gasification slag material, fully mixing, carrying out irradiation treatment, and continuously stirring under alternate illumination. The method has the advantages of being high in efficiency, small in sludge protein damage, low in cost, convenient to operate, easy to dehydrate the disintegrated sludge, environmentally friendly and the like. 本发明公开了一种剩余污泥破解方法，包括如下步骤：（1）取气化渣进行焙烧，冷却后浸于氢氧化钠水溶液中，加热后冷却，将处理后的固体烘干；将烘干后的固体加入碳酸钠和硝酸镍，在持续搅拌中进行水浴加