Removal of Soluble Chlorinate by Acid Washing for MSWI Bottom Ash

• Main Authors: Tai-liang Yeh, 葉泰良
• Other Authors: 章裕民
• Format: Others
• Language: zh-TW
• Published: 2011
• Online Access: http://ndltd.ncl.edu.tw/handle/j92u4j

碩士 === 國立臺北科技大學 === 環境工程與管理研究所 === 99 === Because of domestic incineration of concern, fly ash has become a follow-up question to be addressed. Bottom ash recycling products are mainly used in civil construction, road additires, it contains a high amount of water-soluble chloride ion will make the reuse restrictions before the incineration bottom ash uses again pretreatment for the bottom ash also appears important, and how does this research mainly increase the acidic medicament by four section of continuous-type washing in elimination bottom ash water-soluble chloride ion to meet domestic laws and regulations stipulations (The bottom ash the water-soluble chloride ion to be lower than 0.024wt% according to the CNS1240 before bottom ash reusing) as well as reduces the cost to favor in the project effectively the utilization. This research by liquid solid ratio、time、and the increase acidic medicament''s quantity takes experiment''s three tremendous influence condition, finally discovered that the fore-mentioned three conditions the enhancement can increases the efficiency with the bottom ash the water-soluble chloride ion in elimination, namely time = 10 minutes、liquid solid ratio =3, and the increase the acidic medicament are the acid: water , the bottom ash the water-soluble chloride ion density by 0.903% drop to 0.060% (to reduce the efficiency =93.36%); But when the condition enhances for time = 30 minutes、liquid solid ratio =3, the increase the acidic medicament is the acid: water =1: 100, the bottom ash the water-soluble chloride ion density drop to 0.020%, reduces the efficiency to reach as high as 97.75% and according to this study initially estimate cost of this work is 324 dollars each ton