A pilot-scale calcium sodium phosphate (CNP) plant was designed and manufactured to examine the performance
of recently developed stabilization/solidification (S/S) technology. Hg-contaminated wastes
samples generated via various industrial processes in Korea, including municipal, industrial, and medical
waste incineration, wastewater treatment, and lime production, were collected and treated using the
pilot-scale CNP plant. S/S samples were fabricated according to various operating conditions, including
waste type, the dose of the stabilization reagent (Na2S), and the waste loading ratio. Although the performances
(Hg leaching value and compressive strength) were reduced as the waste loading ratio increased,
most of the S/S samples exhibited Hg leaching values that were below the universal treatment standard
limit of 25 lg L1 and compressive strengths that exceeded the criterion of 3.45 MPa.
A pilot-scale calcium sodium phosphate (CNP) plant was designed and manufactured to examine the performanceof recently developed stabilization/solidification (S/S) technology. Hg-contaminated wastessamples generated via various industrial processes in Korea, including municipal, industrial, and medicalwaste incineration, wastewater treatment, and lime production, were collected and treated using thepilot-scale CNP plant. S/S samples were fabricated according to various operating conditions, includingwaste type, the dose of the stabilization reagent (Na2S), and the waste loading ratio. Although the performances(Hg leaching value and compressive strength) were reduced as the waste loading ratio increased,most of the S/S samples exhibited Hg leaching values that were below the universal treatment standardlimit of 25 lg L1 and compressive strengths that exceeded the criterion of 3.45 MPa.
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