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| 1 | An autotrophic nitrogen removal process:Short-cut nitrification combined with ANAMMOX for treating diluted effluent from an UASB reactor fed by landfill leachate显示文摘A combined process consisting of a short-cut nitrification (SN) reactor and an anaerobic ammonium oxidation upflow anaerobic sludge bed (ANAMMOX) reactor was developed to treat the diluted effluent from an upflow anaerobic sludge bed (UASB) reactor treating high ammonium municipal landfill leachate.The SN process was performed in an aerated upflow sludge bed (AUSB) reactor (working volume 3.05 L),treating about 50% of the diluted raw wastewater.The ammonium removal efficiency and the ratio of NO 2 N to NOx-N in the effluent were both higher than 80%,at a maximum nitrogen loading rate of 1.47 kg/(m 3 ·day).The ANAMMOX process was performed in an UASB reactor (working volume 8.5 L),using the mix of SN reactor effluent and diluted raw wastewater at a ratio of 1:1.The ammonium and nitrite removal efficiency reached over 93% and 95%,respectively,after 70-day continuous operation,at a maximum total nitrogen loading rate of 0.91 kg/(m 3 ·day),suggesting a successful operation of the combined process.The average nitrogen loading rate of the combined system was 0.56 kg/(m 3 ·day),with an average total inorganic nitrogen removal efficiency 87%.The nitrogen in the effluent was mostly nitrate.The results provided important evidence for the possibility of applying SN-ANAMMOX after UASB reactor to treat municipal landfill leachate. | Jie Liu Jian'e Zuo Tang Yang Shuquan Zhu Sulin Kuang Kaijun Wang | 2010 | Journal of Environmental Sciences2010，22，5： | 26 |
| 2 | Starch/polyvinyl alcohol blended materials used as solid carbon source for tertiary denitrification of secondary efuent显示文摘Starch/polyvinyl alcohol(PVA) blended materials for using as a solid carbon source(SCS) were prepared by blending PVA and gelatinized starch in an aqueous solution system, in which PVA served as framework material and starch as carbon source. The optimization of starch content and temperature efects were investigated. It was indicated that higher denitrification efciency could be achieved with more starch in the materials. The average specific denitrification rates were 0.93, 0.66, 0.37 and 0.36 mg/(g·day)corresponding to starch content of 70%, 60%, 40% and 30% respectively at 37°C. The denitrification rates increased when operating temperature was raised from 23°C to 30°C and then 37°C. The mechanism of carbon release was analyzed incorporating the experimental results of abiotic release in deionized water. The organic carbon was mainly hydrolyzed by microbes, and the biological release efciencies were at the range of 89.2% to 96.0%. A long-term experiment with a continuous flow reactor with SCS material containing 70% starch was conducted to gain some experience for practical application. When the influent nitrate concentration was in the range of 35.2 to 39.1 mg/L, hydraulic retention time of 4 hr, and operating temperature of 30°C, a nitrogen removal efciency up to94.6% and denitrification rate of 0.217 kg/(m3·day) was achieved. The starch-based materials developed in this study can be used as a solid carbon source for tertiary nitrogen removal from secondary efuent. | Peng Li Jiane Zuo Wei Xing Lei Tang Xiangyang Ye Zaixing Li Lin Yuan Kaijun Wang Hongtao Zhang | 2013 | Journal of Environmental Sciences2013，25，10： | 11 |
| 3 | 40Ar-39Ar Geochronology and Tectonic Implications of the Blueschist from Northwestern Qiangtang, Northern Tibet, Western China显示文摘Blueschist exposed in the northwestern Qiangtang terrane, northern Tibet, western China (~84°30′E, 34°24′N), provides new constraints on the tectonic evolution of Qiangtang as well as northern Tibet. The blueschist represented by lawsonite-and glaucophane-bearing assemblages equilibrated at 375-400 °C and ~11 kbar. 40Ar-39Ar analysis on mineral separate from one blueschist sample yielded a well-defined plateau age of ~242 Ma. Geochemical studies show the blueschist is metamorphosed within-plate basalts. The high pressure-low temperature blueschist indicates a Triassic event of lithosphere subduction, and clearly represents an extension of the central Qiangtang metamorphic belt, and defines an in situ suture between eastern and western Qiangtang. | TANG Xianchun ZHANG Kaijun | 2012 | Acta Geologica Sinica(English Edition)2012，86，6： | 3 |
| 4 | Corrosion behavior of {erritic/martensitic steel P92 in supercritical water显示文摘 | Yin Kaijun Qiu Shaoyu Tang Rui | 2009 | J Supercrit Fluid2009，50，3： | 1 |
| 5 | Study on rainfall interception characteristics of natural hardwood forest in central Taiwan显示文摘 | Lu Xiangyu Tang Kaijun | 1995 | Bulletin of Taiwan Forestry Research Institute1995，10，4： | 1 |
| 6 | Late Mesozoic tectonic evolution and growth of the Tibetan plateau prior to the Indo- Asian collision 显示文摘 | Zhang Kaijun Zhang Yuxiu Tang Xianchun Xia Bin | 2012 | Earth-Science Reviews2012，114，34： | 1 |
| 7 | Nonlinear Multivariate Image Filtering Techniques显示文摘 | Tang Kaijun Astola J Neuvo Y | 1995 | IEEE Trans on Image Processing1995，6，4： | 1 |
| 8 | A Policy Integration Method Based on Multilevel Security for Data Integration显示文摘Integrating and sharing data from different data sources is one of the trends to make better use of data. However,data integration hampers data confidentiality where each data source has its own access control policy. This paper includes a discussion on the issue about access control across multiple data sources when they are combined together in the scenario of searching over these data. A method based on multilevel security for data integration is proposed. The proposed method allows the merging of policies and also tackles the issue of policy conflicts between different data sources. | WANG Xinming TAN Haoxiang CHEN Kaijun TANG Hua ZHAO Gansen TANG Yong NIE Ruihua | 2015 | Wuhan University Journal of Natural Sciences2015，20，6： | 0 |
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