| Summary: | 碩士 === 國立屏東科技大學 === 環境工程與科學系所 === 104 === Hydrothermal treatment is used water or solvents in a closed state as a liquid medium at high temperature and pressure conditions of a chemical reaction, which is low pollution, simple control method of pollution and simple operating conditions, is a treatment technology with great potential.
Electrolysis can induce oxidative degradation, without adding additional chemicals. Which can be carried out at atmospheric pressure at room temperature and does not produce secondary pollution.
In this study, using hydrothermal treatement combined with
electrolysis technology to reduce bottom ash organic matter and other harmful substances, in order to achieve sound, reduction and other purposes.
The research shows (1) after the hydrothermal treatment of bottom ash, sodium, aluminum, chloride content were decreased , wherein the chloride in residue was 4.1wt%, can be reduced 0.053wt%, but as the process temperature is further increased when the chloride content began to increase, which probably because chloride ions in solution leads to increased synthesis of KCl solid chlorine content.
(2) bottom slag lead leaching will increase as the process temperature increases the dissolution hydrothermal treatment program may result in incineration bottom ash Pb mobility increases. Bottom Ash and all samples were less than the limit, so the bottom slag recycling is not part of lead leaching concerns.
(3) bottom ash soluble chloride via the water after the heat treatment process, the chlorine content can be reduced up to 94%. Confirmed that the hydrothermal treatment could reduce the bottom ash soluble chloride.
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