Abstract:A series of hydrothermal treatment experiments for Bai-Inhua lignite from Inner Mongolia were conducted in this article. The effect of processing temperature and coal slurry concentration were studied by measuring TOC, COD, BOD5, total nitrogen, ammonia nitrogen, Cl-, SO42- and pH value of the waste water after hydrothermal treatment. The processing temperature had a significant effect on the carbon and nitrogen content in the wastewater, as the processing temperature increases from 200℃ to 350℃, the carbon and the nitrogen content increase more than 20 times and 30 times separately. The slurry concentration had a significant effect on the Cl- and SO42- content in the wastewater, which increased with the increasing coal slurry concentration. The processing temperature shall be lower than 350 ℃, and the coal slurry concentration shall be identified with the consideration of the equipment material.
曾维薇, 张建胜, 赵勇. 水热解过程对提质褐煤液体产物的影响[J]. 中国环境科学, 2012, 32(4): 598-602.
ZENG Wei-Wei, ZHANG Jian-Sheng, ZHAO Yong. Effect of processing conditions on organics and inorganics in wastewater during hydrothermal treatment of a low-rank coal. CHINA ENVIRONMENTAL SCIENCECE, 2012, 32(4): 598-602.