| 1 | Technique for Advanced Electrochemical Oxidation Treatment of Nanofiltration Concentrate of Landfill Leachate显示文摘Landfill leachate treated with combined process of 'pretreatment +biological treatment +advanced treatment(NF)' to produce nanofiltration concentrate, which bio-chemical ratio(B/C) is less than 0.1 and CODcr concentration is 2 000-2 500 mg/L, high salt content. Which cannot be discharged under existing environmental standards. According to analysis based on electrochemical advanced oxidation mechanism, a two-step electrochemical technique was recommended. In the first step, a pulse electrochemical technique was adopted. With Fe as consumption electrode and current density of 10 mA/cm2, the pollutants were removed by means of Fenton reaction, electroflotation and electrocoagulation. In the second step, a double function electrode was used to perform electrocatalytic oxidation by means of titanium metallic oxidates. In the condition that current density being 12.5 mA/cm2, the pollutants were further removed by oxidation and electrolytic deposition. Result shows that the removing rate of CODcr, NH3-N and Cl- were 70%-85%, 90% and 25%, respectively; average value of B/C ratio increased from 0.09 to 0.38 and conductivity reduced by 10%. | XIONG Changgui LI Guang ZHANG Zhiliang XIA Zhengwu LI Jian YE Hongji | 2014 | Wuhan University Journal of Natural Sciences2014，19，4： | 4 |
| 3 | Discovery and inspiration of large-and medium-sized glutenite-rich oil and gas fields in the eastern South China Sea:An example from Paleogene Enping Formation in Huizhou 26 subsag,Pearl River Mouth Basin显示文摘Based on the practice of oil and gas exploration in the Huizhou Sag of the Pearl River Mouth Basin,the geochemical indexes of source rocks were measured,the reservoir development morphology was restored,the rocks and minerals were characterized microscopically,the measured trap sealing indexes were compared,the biomarker compounds of crude oil were extracted,the genesis of condensate gas was identified,and the reservoir-forming conditions were examined.On this basis,the Paleogene Enping Formation in the Huizhou 26 subsag was systematically analyzed for the potential of oil and gas resources,the development characteristics of large-scale high-quality conglomerate reservoirs,the trapping effectiveness of faults,the hydrocarbon migration and accumulation model,and the formation conditions and exploration targets of large-and medium-sized glutenite-rich oil and gas fields.The research results were obtained in four aspects.First,the Paleogene Wenchang Formation in the Huizhou 26 subsag develops extensive and thick high-quality source rocks of semi-deep to deep lacustrine subfacies,which have typical hydrocarbon expulsion characteristics of'great oil generation in the early stage and huge gas expulsion in the late stage',providing a sufficient material basis for hydrocarbon accumulation in the Enping Formation.Second,under the joint control of the steep slope zone and transition zone of the fault within the sag,the large-scale near-source glutenite reservoirs are highly heterogeneous,with the development scale dominated hierarchically by three factors(favorable facies zone,particle component,and microfracture).The(subaqueous)distributary channels near the fault system,with equal grains,a low mud content(<5%),and a high content of feldspar composition,are conducive to the development of sweet spot reservoirs.Third,the strike-slip pressurization trap covered by stable lake flooding mudstone is a necessary condition for oil and gas preservation,and the NE and nearly EW faults obliquely to the principal stress have the best control on traps.Fourth,the spatiotemporal configuration of high-quality source rocks,fault transport/sealing,and glutenite reservoirs controls the degree of hydrocarbon enrichment.From top to bottom,three hydrocarbon accumulation units,i.e.low-fill zone,transition zone,and high-fill zone,are recognized.The main area of the channel in the nearly pressurized source-connecting fault zone is favorable for large-scale hydrocarbon enrichment.The research results suggest a new direction for the exploration of large-scale glutenite-rich reservoirs in the Enping Formation of the Pearl River Mouth Basin,and present a major breakthrough in oil and gas exploration. | XU Changgui GAO Yangdong LIU Jun PENG Guangrong LIU Pei XIONG Wanlin SONG Penglin | 2024 | Petroleum Exploration and Development2024，51，1： | 0 |
| 4 | Study on Emergency Management of Geological and Meteorological Disasters显示文摘The damage caused by geological and meteorological disasters was pointed out in this paper through analyzing the features and causes of geological and meteorological disasters.To strengthen emergency management of geological and meteorological disasters,it is suggested to rigorously investigate potential geological hazard points,to strengthen observation and warning system,to take group prevention and group test as a supplementary to professional observation,to build up the last line of defense to geological and meteorological disasters,to set up functional cooperation mechanism,and to publicize disaster prevention and mitigation. | Guan Changgui Zuo Xiong He Zeneng | 2014 | Meteorological and Environmental Research2014，5，3： | 0 |
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