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Mercury emission control technology in the combustion flue gas of coal-fired power plants has been under intensive development, but none has been implemented commercially because of the high cost. Treatment of coal before combustion provides an alternative option for Hg emission control. In this study, samples of one anthracite, one lignite and three bituminous coals were investigated to determine...
The coal industry is the most important economic pillar in Shanxi province, China. As an important part in the coal industry, while it promoted the rapid development of the economy in Shanxi, but also a lot of negative impact on the environment in Shanxi. This paper based on the theory of green logistics, and proposed analysis and evaluation of the status quo of the Shanxi coal logistics.
This article according to the overburden rock structural features and the geological conditions of HaoDa coal mine, based on the scene investigation and study and the ore presses the monitor, after the numerical simulation of mining face and roadway, surrounding rock stress and deformation were analyzed during mining, According to the data of the ore presses the monitor, mastering the mine pressure...
Heavy metals emission is a hot topic during coal combustion in the recent years. In this paper, the effect of various sorbents, temperature and air staging combustion on heavy metals emission are experimentally investigated. The results show that the three sorbents(kaolinite, bauxite, and limestone) have the ability of reducing heavy metals emission. Kaolinite is the optimum sorbent for Pb, bauxite...
In order to study phenoloxidase (PO) activity of the phenol-degrading bacteria, the carbon source of isolation culture medium adopts artificial phenol mixture. Stenotrophomonas maltophilia K279a is isolated from coal chemical industry wastewater. The optimum conditions for PO production are phenol 1000mg/L, temperature 30-34°C and PH 7-7.5. The strain resists 980mg/L COD and 805mg/L phenols. The degradation...
The treatment of coal chemical wastewater by the two-stage anaerobic process was studied in this paper. The results showed that the removal efficiency of chemical oxygen demand (COD), total phenols (TP), and volatile phenol (VP) could reach 53.9%, 52.6%, 84.9%, respectively, which was significantly better than the single-stage anaerobic unit. The division of each unit was different in the two-stage...
In order to get the predominant microorganism, the experiment adopted Sequencing Batch Reactor(SBR) method. The appropriate conditions for growth: COD400-1200mg/L, PH6-8, 30-45??C; the consecutive degradation results of 30d were measured in small-scale test: COD 85%, phenol mixture more than 98%,NH3-N35%-45%. To get this degradation level, the predominant microorganism used 2 4h, and the original...
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