CAJ | 학술논문

利用中国矿业大学(北京)微生物复垦实验室自主分离筛选出的嗜酸氧化硫硫杆菌,模拟自然堆放条件,采用柱状淋滤脱硫试验来研究其对大武口高硫煤矸石的脱硫效果.结果表明,脱硫微生物能够促进煤矸石中硫的氧化,使淋滤液pH值降低,电导率明显增加,煤矸石中的盐基离子被脱出来,脱硫微生物缩短了煤矸石的脱硫周期,在淋滤前4次脱出的硫酸根浓度增加明显.经过15次淋滤后,煤矸石脱硫量达到67.64%,氧化硫硫杆菌对脱硫的贡献率为11.08%.经过脱硫后煤矸石基质的pH值有所提高,盐分含量明显下降,矸石的性状趋于稳定,可为煤矿区矸石山的生态恢复奠定基础,促进煤矿区环境的可持续发展.
이용중국광업대학(북경)미생물복은실험실자주분리사선출적기산양화류류간균,모의자연퇴방조건,채용주상림려탈류시험래연구기대대무구고류매안석적탈류효과.결과표명,탈류미생물능구촉진매안석중류적양화,사림려액pH치강저,전도솔명현증가,매안석중적염기리자피탈출래,탈류미생물축단료매안석적탈류주기,재림려전4차탈출적류산근농도증가명현.경과15차림려후,매안석탈류량체도67.64%,양화류류간균대탈류적공헌솔위11.08%.경과탈류후매안석기질적pH치유소제고,염분함량명현하강,안석적성상추우은정,가위매광구안석산적생태회복전정기출,촉진매광구배경적가지속발전.
The treatment of coal wastes in coal mine areas is a difficult issue. A strain of chemolitho autotrophic sulfur oxidizing bacteria was isolated from coal wastes in the lab to study its desulphurization effects on coal wastes coming from Dawukou coal mine areas. The pole leaching experiment was conducted in natural conditions. The results show that the microbe can promote sulfur oxidation in the coal wastes. It also can reduce the pH value and increase electricity conductivity (EC) in the leaching solution. The iron was emerged from the coal wastes. The microbe can shorten the desulphurizatiou periods. The sulphate concentration was enhanced after leaching 4 times. The desulphurization rate can reach 67.6% and its desulphurization distribution rate is 11% after leaching 15 times. EC and pH values were measured in the coal wastes after desulphurization, pH value was increased and EC decreased significantly in the coal wastes medium. That wiU make the coal wastes more stable in their properties, which may contribute to the ecological restoration with respect to the coal wastes and promote environmental sustainable development in the coal mine areas.