The invention discloses a Fenton-containing 
sludge catalyst for 
water treatment, and a preparation method and an application method thereof, and belongs to the technical field of 
water treatment. Thecatalyst comprises a carrier and an 
active component, the carrier is prepared from clay, micalex, 
sepiolite, kaolin and quartzite as raw materials, the 
active component is prepared from Fenton sludgeas a precursor, the Fenton 
sludge is 
sludge dried at low temperature, the content of the iron element in the sludge is 60-70%, and the content of organic matters in the sludge is 10-15%; and silicatemineral carriers such as clay, micalex, 
sepiolite, kaolin and quartzite play a good skeleton supporting role, it is guaranteed that the catalyst has high strength, the substances are not likely to bedissolved in water, and the service life of the catalyst in water is guaranteed. The Fenton sludge contains the catalyst 
active component, and pores are generated in the 
roasting process of the catalyst, so that the 
porosity of the catalyst is ensured, and the contact probability of components in catalyst particles and 
ozone is increased; and the strength of the prepared catalyst is greater than 400 N, and the service life of the catalyst is prolonged by 2-3 years.