垃圾焚化混合灰與CMP污泥調製環保水泥之工程性質研究

Engineering Properties of Eco-cement Made by MSWI Ash-mix and CMP Sludge

李增欽(Tzen-Chin Lee) ； 施並裕(Ping-Yu Shih) ； 粘凱傑(Kai-Jie Nian) ； 張正成(Cheng-Cheng Chang)

《臺灣鑛業》 64卷1期 (2012/03) Pp. 29-41

https://doi.org/10.30014/TMI.201203.0005

摘要

將垃圾焚化爐所產生之飛灰與洗滌灰，依其產出比例混合成混合灰，再添加該混合灰75%重量之CMP污泥予以均勻混合，其後將該調質混合灰進行熔融處理，並以所得之調質混合灰熔渣粉末分別取代5、10、20、與30 wt%水泥，灌鑄成5×5×5-cm3之水泥砂漿試體，進行抗壓強度等試驗，實驗結果顯示其初期抗壓強度即與純水泥砂漿試體相近而略高，而試體養護齡期於14-90天，其試體抗壓強度約為純水泥砂漿試體強度之107~120%，顯現其抗壓強度之成長效果良好。本文亦同時進行毒性特性溶出試驗，初、終凝試驗，與流度試驗等，試驗結果顯示該兩種廢棄物之共融熔渣，可取代部分水泥使用於水泥砂漿中，深具資源化再利用之潛能，亦對永續發展有益。

關鍵字

垃圾焚化混合灰 ； CMP污泥 ； 水泥砂漿 ； 抗壓強度 ； 卜作嵐反應

並列摘要

Fly- and scrubber-ash from a municipal solid waste incinerator (MSWI) were mixed uniformly in their production weight proportions, then, the mixture was added to the chemical mechanical polishing (CMP) sludge with the 75 wt% of ash-mix and melted to form a glassy slag. The slag-blended cement mortar (SBCM) specimens were manufactured with 0, 5, 10, 20 and 30 wt% of the cement replaced by slag powder, and the molded specimens were for compressive strength testing. The test result reveal the compressive strength of CMP cement mortar were close to or higher than those of ordinary Portland cement mortar (OPCM) in early curing age, and were 7~20% higher than those of the OPCM specimens at curing ages of 14-90 days, the test results exhibit the good performance of strength evolution. This article also investigate the toxicity characteristic leaching procedure (TCLP) test of modified slag, the setting time test and fluidity test of cement mortar. The test result depict the amount of leached heavy metals was far below the EPA'S regulatory threshold. Hence, the modified ash-mix slag could be partially replace cement in cement mortar, the MSWI ash-mix and CMP sludge can be recycling as a resource potentially, and that is particularly environmentally friend and compatible with the demands of sustainable development.

並列關鍵字

MSWI ash-mix ； CMP sludge ； cement mortar ； compressive strength ； pozzolanic reaction