The present invention discloses a
sludge dewatering conditioning agent, which comprises, by weight, 30-70% of desulfurization ash, 5-15% of a
magnesium salt, 5-30% of an iron salt, 2-20% of an aluminum salt, and 0.1-15% of
magnesium oxide. The invention further provides a
dewatering method of the conditioning agent, wherein the
dewatering method comprises conditioning agent solution preparing,
sludge conditioning, flocculant solution preparing,
sludge dewatering and other steps. According to the present invention, the characteristics of wide used
raw material source, and low
raw material price, low preparation cost and good dewatering effect are provided, the method can be performed through the existing
sludge dewatering facility, the implementation process is simple, the stability and the reliability of the
sludge dewatering process can be effectively improved, and the
sludge dewatering conditioning agent and the dewatering method can be widely used for treatments of various
wastewater,
sewage and sludge.