共查询到20条相似文献，搜索用时 0 毫秒
1.
介绍了煤层气的基本概念,及其由于爆炸在煤矿行业所造成的危害.结合某煤矿利用煤层气发电的实例,总结了煤层气发电可以降低各种污染物排放,实现经济、安全、环保“三效合一”,节能减排效果明显. 相似文献
2.
煤的微生物浮选法脱硫技术 总被引：3，自引：0，他引：3
文章介绍了煤的微生物浮选法脱硫技术的机理和３个影响因子，细菌浓度，捕集剂和浮选柱径高比，同时通过与浸出法的比较，微生物浮选示的反应时间比传统的生物脱硫方法大大缩短，脱除黄铁矿硫的效率高，黄铁矿可回收利用，而且不产生大量的酸性废液，煤的质量同时也获得提高，最后，分析了微生物浮选法脱硫技术的３个发展方向。 相似文献
3.
Jonguk Park Pin-Fang Li Tomoaki Ichijo Masao Nasu Nobuyasu Yamaguchi 《环境科学学报(英文版)》2018,30(10):133-139
Aeolian dust particles arising from arid and semiarid zones are known to carry microbes by air currents. The effect of wind-borne bacteria on atmospheric bacterial population at various downwind distances from the dust source regions must be clarified, but has not yet been reported. This study monitored the bacterial abundance and community composition in outdoor aerosol samples in Beijing, China, which is close to the Asian dust source regions, and compared them with the results obtained in a distant region(Osaka, Japan).The Asian dust collected in Beijing contained(4 ± 3) × 10~4 bacterial cells/m~3, approximately~4 times higher than in Osaka. On 15 April 2015, Beijing experienced severe Asian dust events with a 1000-fold increase in bacterial abundance, relative to non-Asian dust days. Dominant bacterial phyla and classes in Asian dust collected in Beijing were Actinobacteria, Bacilli and Acidobacteria, and the bacterial community composition varied more widely than in Osaka.The bacterial community compositions differed between the Beijing and Osaka dusts, even for the same Asian dust events. These results indicated that aerosol bacterial communities nearer the dust source are more affected by eolian dust than their distant counterparts. 相似文献
4.
Coal production globally is projected to grow in the foreseeable future. Countries with heavy reliance on coal could reduce methane and other emissions through the capture and utilization of coal mine methane (CMM) in the short and medium term, while they pursue structural and long-term economic changes. Several countries have successfully implemented policies to promote CMM capture and utilization; however, some countries still struggle to implement projects. This paper outlines key factors to consider in adapting policies for CMM mitigation. The authors propose an approach for selecting adequate mechanisms for stimulating CMM mitigation that involves reviewing global best practices and categorizing them functionally either as mechanisms needed to improve the underlying conditions or as CMM-specific policies. It is important to understand local policy frameworks and to consider whether it is more feasible to improve underlying policy conditions or to provide targeted incentives as an interim measure.Using Kazakhstan as a case study, the authors demonstrate how policymakers could assess the overall policy framework to find the most promising options to facilitate CMM projects. Kazakhstan’s emissions from underground coal mines have been increasing both in total and per tonne of coal production, while overall production has been declining. CMM mitigation presents an opportunity for the country to reduce its greenhouse gas emissions in the near and medium term, while the government pursues sustainable development goals. Analysis shows that policymakers in Kazakhstan can leverage existing policies to stimulate utilization by extending feed-in tariffs to cover CMM and by developing working methodologies for companies to obtain emission reduction credits from CMM projects. 相似文献
5.
微生物群落多样性分析方法的进展 总被引：12，自引：0，他引：12
微生物群落多样性由3个组成要素形成；物种多样性，遗传多样性，功能多样性，从这3方面系统地概述了细胞结构分析方法。分析生物学方法，功能多样性方法等技术在国内外的研究进展，并综合分析及探讨了这些技术的优点和不足。微生物群落多样性分析，对环境资源调查，环境变化监控，环境治理及环境压力等研究。具有深远的意义。具有深远的意义。而其分析方法的发展趋势，则是原位快速，高通量的检测。 相似文献
6.
7.
根据杨庄矿东二风井噪声的测试结果，针对主声源——风井排风口、风机、电机房、风道检修门采用吸声、隔声综合降噪治理技术进行治理，取得了良好的效果，为煤矿风井的噪声治理设计提供了经验。 相似文献
8.
Yu-hang Zhou Wei-xi Huang Zhen-yuan Nie Hong-chang Liu Yue Liu Can Wang Jin-lan Xia Wen-sheng Shu 《环境科学学报(英文版)》2024,36(3):681-700
Arsenic(As)speciation transformation in acid mine drainage(AMD)is comprehensively af-fected by biological and abiotic factors,such as microbially mediated Fe/S redox reactions and changes in environmental conditions(pH and oxidation-reduction potential).However,their combined impacts on arsenic speciation transformation remain poorly studied.There-fore,we explored arsenic transformation and immobilization during pyrite dissolution me-diated by AMD enrichment culture under different acidic pH conditions.The results for incubation and mineralogical transformation of solid residues show that in the presence of AMD enrichment culture,pH 2.0,2.5,and 3.0 are more conducive to the formation of jarosites and ferric arsenate,which could immobilize high quantities of dissolved arsenic by adsorption and coprecipitation.The pH conditions significantly affect the initial adsorp-tion of microbial cells to the minerals and the evolution of microbial community structure,further influencing the biodissolution of pyrite and the release and oxidation process of Fe/S.The results of Fe/S/As speciation transformation of the solid residues show that the transformation of Fe,S,and As in solution is mainly regulated by pH and potential values,which imposed significantly different effects on the formation of secondary minerals and thus arsenic oxidation and immobilization.The above results indicated that arsenic trans-formation is closely related to the Fe/S oxidation associated with pyrite bio-oxidation,and this correlation is critically regulated by the pH conditions of the system. 相似文献
9.
10.
粉煤灰与电石渣治理煤矿自燃矸石山 总被引：5，自引：0，他引：5
煤矿自燃矸石山是矿区一大污染源。本文研究了粉煤灰，电石渣这两种工业废弃物作为治理自燃矸石山的灭火材料的可能性。实验室试验表明，在一定的配比下它们具有良好的阻燃性。现场工程获得了成功，不仅取得了良好的环境效益，也取得了良好的经济效益。 相似文献
11.
12.
我国煤炭资源赋存丰富且条件复杂,历年开采引发或加剧众多矿山地质环境问题。本文以煤炭资源开发各环节活动及开采形式为基础．分析和探讨了煤矿建设和生产对矿山地质环境的影响,探讨了问题类型及特征,并给出了不同开采形式对矿山地质环境影响的关系,并提出了矿山地质环境问题防治工作进一步开展的几点建议,对我国发展绿色、高效矿山有一定促进作用。 相似文献
13.
Jialiang Zuo Lina Xu Jianlin Guo Shengjun Xu Shuanglong Ma Cancan Jiang Dongmin Yang Danhua Wang Xuliang Zhuang 《环境科学学报(英文版)》2023,35(5):30-41
With the rapid expansion of livestock production, the amount of livestock wastewater accumulated rapidly. Lack of biodegradable organic matter makes denitrification of livestock wastewater after anaerobic digestion more difficult. In this study, Myriophyllum aquaticum constructed wetlands(CWs) with efficient nitrogen removal performance were established under different carbon/nitrogen(C/N) ratios. Analysis of community composition reveals the change of M. aquaticum CWs in microbial community str... 相似文献
14.
应用PFU法监测印染废水净化效能的研究 总被引：5，自引：0，他引：5
应用PFU法对印染废水净化效能进行了监测。结果表明：微型生物群落的结构参数和功能参数均较好地反映了印染废水的净化效能，水体流速对群集速度有一定的影响。 相似文献
15.
本文按照《环境影响评价技术导则地下水环境》(HJ610-2011)的要求,结合煤炭开采对地下水的影响方式,从评价等级及评价范围的确定,现状调查内容和评价、预测内容和方法、地下水保护措施、地下水动态监测等方面提出了煤矿地下水环境影响评价的要点,为煤矿项目地下水环境影响评价提供参考。 相似文献
16.
17.
Junwen Chen Huacong Liu Yaohui Bai Jing Qi Weixiao Qi Huijuan Liu Jianfeng Peng Jiuhui Qu 《环境科学学报(英文版)》2022,34(5):103-113
Lake mixing influences aquatic chemical properties and microbial community composition,and thus, we hypothesized that it would alter microbial community assembly and interaction. To clarify this issue, we explored the community assembly processes and cooccurrence networks in four seasons at two depths(epilimnion and hypolimnion) in a mesotrophic and stratified lake(Chenghai Lake), which formed stratification in the summer and turnover in the winter. During the stratification period, the epilimni... 相似文献
18.
本文通过对兖州矿区大气污染源的调查,分析了矿区煤烟型污染的治理现状、控制技术和效果及存在的问题。结合矿区实际,对煤烟型污染的治理和控制技术的优化作了探讨。 相似文献
19.
20.
Electrotrophs are microbes that can receive electrons directly from cathode in a microbial electrolysis cell(MEC).They not only participate in organic biosynthesis,but also be crucial in cathode-based bioremediation.However,little is known about the electrotrophic community in paddy soils.Here,the putative electrotrophs were enriched by cathodes of MECs constructed from five paddy soils with various properties using bicarbonate as an electron acceptor,and identified by 16 S rRNA-gene based Illum... 相似文献