The invention discloses a water purifying and sterilizing
disinfectant, which comprises the following components: a
potassium monopersulfate triple salt, a
peroxide activation catalyst and an active
halide preparation, wherein the
mass ratio of the
potassium monopersulfate triple salt to the
peroxide activation catalyst is 500:1 to 5,000:1; and the
mass ratio of the
potassium monopersulfate triple salt to the active
halide preparation is 1:1 to 10:1. The
disinfectant has high water toxic matter removal capacity and high
microorganism killing performance, avoids damaging human beings, animals and
ecological environment, overcomes the drawbacks of relatively low oxidability, large using amount and generation of a large amount of by-products of
chlorine, the drawbacks caused by the extremely short acting period and relatively high oxidability of
ozone, has an extremely high sterilizing capacity that helps to reduce the using amount and acting period. And the
disinfectant is free from residue and
odor and is high in stability and extremely low in use cost.