نتایج جستجو برای: coking coal
تعداد نتایج: 32475 فیلتر نتایج به سال:
A laboratory-scale anaerobic sequencing batch reactor (ASBR) was used to pretreat coking wastewater. Inoculated anaerobic granular biomass was acclimated for 225 d to the coking wastewater, and then the biochemical methane potential (BMP) of the coking wastewater in the acclimated granular biomass was measured. At the same time, some fundamental technological factors, such as the filling time a...
Arsenic contamination on the surface of buildings and facilities at a coking plant and associated health risk were studied. A total of 94 wipe samples from 56 buildings and facilities were collected, and As concentrations were found to range from 0.01 to 23.90 μg/100 cm(2). 20.2% of the samples exceeded the As level calculated to present health risk: 4.02 μg/100 cm(2). Arsenic mean concentratio...
Mercury in coals is one of the important sources atmospheric mercury, which potentially harmful to ecological environment. Based on data 970 coal samples, concentration, spatial distribution and occurrence mercury Chinese were analyzed. The main conclusions are as follows: concentration coalfields uneven; medium high mainly distributed southwest China eastern Inner Mongolia. concentrations vari...
CONTENTS 165 Individual particle analysis of aerosols collected at Lhasa City in the Tibetan Plateau
Article history: Received 21 October 2014 Revised 28 October 2014 Accepted 29 October 2014 Available online 23 January 2015 In this study, ultraviolet (UV) and vacuum ultraviolet (VUV) photolysis were investigated for the pre-treatment and post-treatment of coking wastewater. First, 6-fold diluted raw coking wastewater was irradiated by UV and VUV. It was found that 15.9%–35.4% total organic ca...
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