Lin Deng-Fong, Luo Huan-Lin, Lin Kuo-Liang, Liu Zhe-Kun
a Department of Civil and Ecological Engineering , I-Shou University , Kaohsiung City , Taiwan, ROC.
Environ Technol. 2017 Jul;38(13-14):1679-1688. doi: 10.1080/09593330.2017.1296891. Epub 2017 Mar 3.
Applying sewage sludge ash (SSA) to produce reclaimed tiles is a promising recycling technology in resolving the increasing sludge wastes from wastewater treatment. However, performance of such reclaimed tiles is inferior to that of original ceramic tiles. Many researchers have therefore tried adding various industrial by-products to improve reclaimed tile properties. In this study, multiple materials including waste glass and waste foundry sand (WFS) were added in an attempt to improve physical and mechanical properties of reclaimed tiles with SSA. Samples with various combinations of clay, WFS, waste glass and SSA were made with three kiln temperatures of 1000°C, 1050°C, and 1100°C. A series of tests on the samples were next conducted. Test results showed that waste glass had positive effects on bending strength, water absorption and weight loss on ignition, while WFS contributed the most in reducing shrinkage, but could decrease the tile bending strength when large amount was added at a high kiln temperature. This study suggested that a combination of WFS from 10% to 15%, waste glass from 15% to 20%, SSA at 10% at a kiln temperature between 1000°C and 1050°C could result in quality reclaimed tiles with a balanced performance.
应用污水污泥灰（SSA）生产再生瓷砖是解决污水处理中不断增加的污泥废物的一项很有前景的回收技术。然而，这种再生瓷砖的性能不如原始瓷砖。因此，许多研究人员尝试添加各种工业副产品来改善再生瓷砖的性能。在本研究中，添加了包括废玻璃和废铸造砂（WFS）在内的多种材料，试图改善含SSA的再生瓷砖的物理和力学性能。制备了含有粘土、WFS、废玻璃和SSA不同组合的样品，并在1000°C、1050°C和1100°C三个窑温下烧制。接下来对样品进行了一系列测试。测试结果表明，废玻璃对弯曲强度、吸水率和灼烧失重有积极影响，而WFS在减少收缩方面贡献最大，但在高温窑温下大量添加时会降低瓷砖的弯曲强度。本研究表明，在1000°C至1050°C的窑温下，10%至15%的WFS、15%至20%的废玻璃和10%的SSA组合可生产出性能平衡的优质再生瓷砖。
