Adding Sewage Sludge and Waste Glass To Sinter Reservoir Sediment Aggregates

• Main Authors: Jia-Ling Lin, 林嘉玲
• Other Authors: Ing-Jia Chiou
• Format: Others
• Language: zh-TW
• Published: 2011
• Online Access: http://ndltd.ncl.edu.tw/handle/65586295149216380827

碩士 === 南亞技術學院 === 材料應用科技研究所 === 99 === Reservoir sediment in Taiwan is up to 14.6 million cube meter per year, and the sludge dredged is about 50 million cube meter every year. The seriousness of reservoir sediment and the urgency of reservoir sediment recycling are apparent. Because the reservoir sediment aggregates need to be sintered under high temperature and thus consume plenty of energy, this study attempts to use reservoir sediment mixed with 0 to 30% of sewage sludge, reservoir sludge mixed with 0-30% of waste glass powder, and reservoir sediment mixed with four types of waste glass powder with different fineness as experimental variables, respectively. At sintering temperature of 1050-1200 ° C, the effect of the sintering behavior, physicochemical properties, durability and the microstructure of the reservoir sediment aggregates will be discussed. In addition, the optimal proportion and the applicable strategies will be suggested. The results show that the mixing water amount of the reservoir sediment mixed with sewage sludge decreases slowly with the addition of the sewage sludge. However, the mixing water amount of the reservoir sediment mixed with waste glass increases significantly with the addition of the sewage sludge. Compared with the reservoir sediment aggregates with sewage sludge, the reservoir sediment aggregates with waste glass has lower water absorption, higher lightweight efficiency, lower strength effects, and higher alkali-silica reaction potential. The pure reservoir sediment aggregates have the characteristic of toughness. The reservoir sediment aggregates with waste glass are more brittle. However, the texture of the reservoir sediment with sewage sludge falls in between. At sintering temperature of 1100 ° C, the proportion of pure reservoir sediment and the proportion of reservoir sediment with waste glass powder (fineness<150μm) are both suitable to be sintered as normal-weight aggregates. However, the proportion of reservoir sediment with waste glass powder (fineness＞150μm) are suitable to be sintered as lightweight aggregates.