| abstract |
The present invention relates to a sludge recycling method using a titanium salt using a titanium salt as a dehydration aid. The method comprises the steps of a) adding the sludge to the sludge to be treated as a titanium salt dehydration aid, b) applying the sludge obtained in step a) to the dehydration device, and performing the dehydration step, c) in the dehydration step of step b). Thereby removing the filtrate and obtaining a sludge cake, and d) incinerating the sludge cake to recover an incineration material containing titanium oxide having photocatalytic activity. According to the present invention, by using a titanium salt as a dehydration aid, an incineration material containing titanium oxide is improved and the titanium oxide having commercially useful photocatalytic activity after incineration is obtained. It can be used as a building material or can be recycled to the environment by spraying on landfills, soil-contaminated areas and the like. Sludge dewatering efficiency is improved and recycling is improved. |