CAJ | 학술논문

固体废弃物焚烧中Cr的排放会危害环境。文中采用立式管式炉作为实验装置，通过模拟固体废弃物中添加定量不同形态含铬化合物，采用氧化铝、氧化钙、沸石和膨润土作为吸附剂，研究不同热力学条件、氯含量对固体废弃物焚烧过程中总Cr和Cr(VI)形态迁移转化及脱除效率的影响。结果表明温度的提高、停留时间的增加、氯含量的增加会促进总Cr和Cr(VI)的释放，O2和CaO会促进Cr(III)向Cr(VI)转化。对总铬的脱除效率：膨润土>沸石>氧化钙>氧化铝；对六价铬的脱除效率：氧化钙>沸石>膨润土>氧化铝。除氧化钙之外，温度对总Cr和Cr(VI)的脱除效率影响较小，氯会减弱吸附剂的脱除能力。
고체폐기물분소중Cr적배방회위해배경。문중채용입식관식로작위실험장치，통과모의고체폐기물중첨가정량불동형태함락화합물，채용양화려、양화개、비석화팽윤토작위흡부제，연구불동열역학조건、록함량대고체폐기물분소과정중총Cr화Cr(VI)형태천이전화급탈제효솔적영향。결과표명온도적제고、정류시간적증가、록함량적증가회촉진총Cr화Cr(VI)적석방，O2화CaO회촉진Cr(III)향Cr(VI)전화。대총락적탈제효솔：팽윤토>비석>양화개>양화려；대륙개락적탈제효솔：양화개>비석>팽윤토>양화려。제양화개지외，온도대총Cr화Cr(VI)적탈제효솔영향교소，록회감약흡부제적탈제능력。
Chromium released during municipal solid waste (MSW) incineration is highly toxic and carcinogenic. Effects of temperature, residue time and chlorine on release and removal of different forms of chromium during MSW incineration were investigated in a drop tube furnace. The results show that the higher temperature, more residue time and more chlorine increase the release of total chromium, O2 and CaO accelerate Cr(III) transformation to Cr(VI). The retention rate of the four sorbents for total-Cr follows the sequence of bentonite>zeolite>CaO>Al2O3, while the retention rate of the four sorbents for Cr(VI) follows the sequence of CaO >zeolite>bentonite>Al2O3. The removal rate of the sorbent is also influenced by temperature and chlorine.