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This study developed the hybrid partial-nitrification and anammox (HPNA) reactor to increase efficiency in ammonia nitrogen (NH₄⁺-N) removal. The HPNA reactor contained a fixed bed filled with biofilm carrier and a fluidized bed with mechanical stirrer to maximize withholding the sludge. The reactor achieved a total nitrogen (TN) removal efficiency of 70% and NH₄⁺-N removal efficiency of 84%. The...
In order to investigate the concentrations of selenium (Se) in plants of the Dashan Region, a typical Se-rich area of China, and to illuminate the daily dietary Se intake of residents in this region, 83 crop samples and 144 Chinese herb samples were collected. Total Se was analyzed in the edible portion of crops and the medical portion of Chinese herbs. The average concentrations of Se ranged from...
This study evaluated the removal characteristics of tanic acid (TA) adsorbed on MIEX resin by batch experiments. MIEX resin can effectively remove TA from raw water at pH 6-9. Chloride and sulfate have adverse effect on the removal of TA. Conversely, bicarbonate can further the removal of TA. The Elovich model is the most suitable for depicting the kinetic process, and liquid film diffusion dominates...
Our study assessed the non-carcinogenic risks of heavy metals in the sources of drinking water treatment plants located along Huaihe River in Jiangsu Province, China. High-resolution inductively coupled plasma-mass spectrometry and inductively coupled plasma-atomic emission spectroscopy were used to determine the levels of eight metals in the water from 30 treatment plants. Non-carcinogenic risks...
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