共查询到18条相似文献,搜索用时 62 毫秒
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气浮分离技术是一种简捷有效分离与富集水中微量、痕量组分的方法,可用于矿物浓集或选择性分离,也可用于废水处理中,它在许多方面优于传统的分离方法.作者比较全面地综述了气浮技术的分类、装置、影响因素、机理、应用,并指出了气浮技术的发展方向. 相似文献
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气浮分离法的研究现状和发展方向 总被引:1,自引:0,他引:1
气浮分离技术是一种简捷有效的分离与富集水中微量、痕量组分的方法,可用于矿物浓集或选择性分离,也可用于废水处理中,它在许多方面优于传统的分离方法.作者比较全面地综述了气浮技术的分类、装置、影响因素、机理、应用,并指出了气浮技术的发展方向. 相似文献
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间接电解硫化氢技术中生成的硫磺颗粒小且呈絮状,所以硫磺分离一直是重点和难点。结合间接电解法生成硫磺的特性,选用气浮法迚行硫磺分离。通过气浮实验条件的确定、成品硫磺模拟气浮实验、模拟吸收液气浮实验确定气浮法分离H_2S制氢过程中生成硫磺的效果及条件。 相似文献
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涡凹(CAF)气浮-生物接触氧化工艺处理纸箱生产废水 总被引:2,自引:0,他引:2
采用CAF涡凹气浮-生物接触氧化工艺处理纸箱生产废水,在进水CODcr、SS和石油类分别为1301mg/L、540mg/L和12.5mg/L的情况下,出水平均值分别为61.5mg/L、37.3mg/L和0.88mg/L。 相似文献
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提出了一种气浮装置中水量与水位调节方法及调节机构,并利用水力学原理进行了验证计算,验证计算表明,该方法可方便地调节气浮池的水位。 相似文献
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贵州某硫铁矿浮选工艺研究 总被引:1,自引:0,他引:1
采用浮选工艺分选贵州某硫铁矿,试验结果表明,在磨矿细度为-0.074mm占79.44%,捕收剂GY用量为380g/t,2#油用量为150g/t的条件下,采用一次粗选、一次精选、一次扫选闭路浮选工艺流程,可获得硫分质量分数为45.36%、回收率为80.55%的硫精矿,尾矿中硫分质量分数仅为2.96%、损失率为19.45%。 相似文献
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Oilfield produced water is large quantities of salty water trapped in underground formations and subsisted under high temperatures and pressures that are brought to the surface along with oil during production. Produced water(PW) contains a lot of pollutants such as hydrocarbons and metals, this water must be treated before disposal. Therefore, different techniques are being used to treat produced water. Electrocoagulation is an efficient treatment technique involving the dissolution of anodes and formation of electro-coagulants, while the simultaneous generation of H_2 bubbles at the cathode leads to the pollutant removal by flotation. Electrocoagulation(EC)method is one of the most promising and widely used processes to treat oilfield produced water. In the present work, a conventional internal-loop(draught tube) airlift reactor was utilized as electrocoagulation/flotation cell for PW treatment by inserting two aluminum electrodes in the riser section of the airlift reactor. The EC airlift reactor was operated in a batch mode for the liquid phase. Different experimental parameters were studied on the oil and turbidity removal efficiencies such as current density, initial pH, electrocoagulation time, and air injection.The experimental results showed that mixing of the oil droplets in the PW was accomplished using only the liquid recirculation resulted by H_2 microbubbles generated by EC process which enhanced the oil removal. The experimental results further showed that the EC time required achieving ≥ 90% oil removal efficiency decreases from 46 to 15 min when operating current density increases from 6.8 to 45.5 mA·cm~(-2). This reactor type was found to be highly efficient and less energy consuming compared to conventional existing electrochemical cells which used mechanical agitation. 相似文献
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Concentration profiles in a laboratory flotation machine: development of a simple sampling technique
The method uses a pipette with pilot tube-shaped sampling orifice. Error analysis, statistical methods, and consideration of hydrodynamic factors have led to a simple and accurate sampling technique. The incremental volume RTD method used to verify the pipette method confirms agreement between procedures, but the pipette method provides far more detail with no more effort.The concentration profile of the Denver D1 laboratory flotation machine was studied at different impeller speeds and impeller/stator clearances. Closely sized glass beads were used as tracer. Within its operating speed range, the machine is far from ideally mixed, and the profiles are very irregular near the impeller/stator assembly. The results are discussed and suggestions made for further research. 相似文献
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浮选新型设备——双流态微泡浮选机 总被引:1,自引:0,他引:1
介绍了双流态微泡浮选机的工作原理,该机将矿化与浮选分置作业;采用专门的压气式微泡矿化器,矿化效果好;在分选桶内设置限流桶,减少中矿循环流与尾矿流的干扰,处理量大;采用前置加药方式,减少了药剂消耗;通过与其它型号浮选机和浮选柱对比,证明该机精煤产率高、造价低、生产成本低;该机技术先进,推动了我国选煤行业的发展。 相似文献
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I. Sheiham T. A. Pinfold 《Journal of chemical technology and biotechnology (Oxford, Oxfordshire : 1986)》1968,18(7):217-221
Precipitates of strontium carbonate (10?3 mole litre?1) were floated using dodecylpyridinium chloride, hexadecylpyridinium bromide, hexadecyltrimethylammonium chloride and a dialkyldimethylammonium chloride. Flotations were performed at a gas flow-rate of 7 litre hour?1 for 3 minutes or 2 litre hour?1 for 20 minutes. Complete recoveries were possible by both methods, provided optimum concentrations of collector were used. If too little collector was present, redispersion of precipitate occurred because the foam formed was insufficient to support it. With too much collector, the precipitate was excluded from the bubbles and also became coated by a double layer of collector which gave a hydrophilic surface. Increase of temperature and of time allowed for precipitation, improved recoveries because of increased particle size. Flotations were not complete below 10?3 m unless the strontium carbonate was co-precipitated in calcium carbonate, when 10?8 m could be recovered. Increased ionic strength reduced recoveries because it caused precipitation to be slower, attachment of collector to the precipitate to be less secure, flotation of the collector to be more rapid and foam drainage, and hence redispersion, to increase. 相似文献