| 摘要 |
<p>The present invention relates to an apparatus for pre-treating waste activated sludge that is generated in biological treatment tanks of sewage treatment plants and wastewater treatment plants, and a method for pre-treating waste activated sludge using the same. The apparatus for pre-treating waste activated sludge that solubilizes sludge comprises: a first sludge storage tank for accommodating sludge to be treated; a high-pressure pump for introducing the sludge from the first sludge storage tank into a cavitation chamber at a pressure of 7 to 560 bars; a cavitation chamber including an orifice so that cavitation can be generated while the high-pressure sludge discharged from the high-pressure pump passes therethrough; a Venturi part including an ozone injection part for injecting ozone into the sludge discharged from the cavitation chamber; and a second sludge storage tank installed on a downstream side of the Venturi part to store the treated sludge.</p> |
