The data presented in this article are related to the research article entitled “Multivariate analysis of trace elements leaching from coal and host rock” [1]. During coal mining, coal and host rock undergo water-rock interaction, leading to release of trace elements to surface and ground water. The batch experiments were designed and implemented to investigate the leaching behavior and mechanisms during the process of water-rock interaction. In different experimental sets, various types of leaching water, open/closed environments, temperature, and initial pH values were used to evaluate their impact on leaching of trace elements. These data could be used to analyze leaching mechanisms of trace elements from coal and host rock, and understand, predict, control trace elements’ contamination to surrounding waters.
Swimming is one of the most popular amusement activities. In order to keep the swimmers from microbiological, the water need to be constantly disinfected. In this study, several indoor and outdoor swimming pools water and drinking water were investigated, it has found that swimming pool water has much higher HAA concentration and toxicity than the drinking water. DCAA and TCAA are the most abundant species in the indoor and outdoor swimming pool water. In the outdoor swimming pool water, TCAA concentration was higher than DCAA, while [DCAA]/[TCAA] was higher in the indoor swimming pool water.
Large number of data has been accumulated in the long-term survey and statistics on forest resource, hidden in which is some useful knowledge, so acquiring the ability to utilize the knowledge has become increasingly important.
Coal mine water usually has high content of trace elements, leading to contamination of surrounding water bodies. Water treatment technologies are used to remove organic and inorganic matters from coal mine water. To evaluate the treating efficiency of conventional and advanced treatment on coal mine drainage, samples of coal mine, carbonate, surface water, and treated water from the treatment processes were collected and analysed. It turns out that the conventional treatment processes can hardly remove both major ions and trace elements in coal mine water. Reverse osmosis technology can reject major ions effectively, but weak in trace elements removal. The analysis of surface water quality suggested contamination by coal mine water in the coal-mine district. To control the contamination and reuse the coal mine water effectively and safe, it is necessary to evaluate more carefully the efficiency of water treatment and potential environment impact of coal mine water on the surrounding surface and ground waters.
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