Sludge treatment method for deeply disintegrating sludge and recycling and reducing carbon source

The invention belongs to the technical field of sludge treatment, and particularly relates to a sludge treatment method for deeply disintegrating sludge and recycling and reducing a carbon source, which comprises the following steps: firstly, concentrating the sludge until the concentration of the concentrated sludge reaches the solid content of 6-8%, and then deeply disintegrating at normal temperature through the combination of two strong alkalis of calcium oxide and sodium hydroxide until the alkali concentration reaches 3-5kg/m < 3 >, the alkali treatment time reaches 24-48 hours, the sludge is subjected to double-alkali treatment and then is subjected to dilution-precipitation treatment twice by using effluent of a sewage plant, the primary dilution is 20-25 times, the secondary dilution is 3-6 times, and in the precipitation-dilution treatment process, fine particles obtained after sludge disintegration flow back to the sewage treatment main process flow along with an upper mixed solution. And further d