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目前电站锅炉清洗大多采用乙二胺四乙酸(EDTA),而EDTA清洗废水极难处理。文章介绍了一种简易、实用的处理方法。在EDTA清洗废水中加入Fenton试剂,在催化分解H2O2的过程中产生羟基自由基OH·,攻击EDTA基团,使之分解为无机成分。通过控制一定的pH值及Fenton试剂配比,达到最好的效果。该方法快速、简单、可操作性强,适合于目前发电厂现场处理,处理后废水可作为电厂低级水用户用水。 相似文献
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EDTA是一种常用的电厂锅炉清洗剂,EDTA酸洗电厂锅炉过程中产生了酸洗废水(称为过洗水),如何在酸洗废水中回收EDTA和废水处理是值得研究的课题。探讨了处理火电厂EDTA酸洗过洗水回用的方法,以回收过洗水中的EDTA,并使废水达标排放。EDTA过洗水通过反渗透处理,淡水出口的水质指标达到废水排放标准,CODCr小于130mg/L,EDTA浓度未检出,铁离子出口浓度为600mg/L。浓水出口废水用碱法回收EDTA,回收率为80%左右。 相似文献
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淮北第二发电厂一期工程为 2× 30 0MW国产燃煤机组 ,其工业废水处理系统随机组一起建成。该废水处理系统采用分散与集中相结合的方法 ,厂区排水采用完全分流制排水系统 ,电厂的雨水、工业废水与生活废水及含油废水经分别的管网收集并处理达标后排放。该废水处理系统的调试过程为分部试转、仪表校验、废水处理药品验收、废水絮凝沉淀小试和系统联动调试等。经处理后的废水 ,其pH为 8.2 7,CODcr为 12 .4 8mg/L ,悬浮物为 15 .0 0mg/L ,符合《污水综合排放标准》中的规定。。 相似文献
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针对湛江奥里油电厂含油废水的特性,通过试验最终确定采用萃取法对其进行处理.介绍了湛江奥里油发电厂含油废水处理系统及工艺流程,该工艺所选萃取剂为0号柴油,辅以专配添加剂,采用BZH型含油废水处理设备.在含油废水中普通矿物油浓度小于或等于10%及奥里油浓度小于或等于5 g/L时,处理后的废水可达标排放. 相似文献
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火电厂脱硫废水微滤、反渗透膜法深度处理试验研究 总被引:1,自引:0,他引:1
为使电厂脱硫废水循环使用并达到废水零排放目标,采用“微滤(MF)-反渗透(RO)”工艺对预处理后的火电厂脱硫废水进行深度处理,分别考察不同固含量条件下微滤系统的运行稳定性和微滤膜的化学清洗方法,以及不同回收率条件下反渗透系统的运行稳定性和脱盐率情况。研究结果表明:经中和软化处理的脱硫废水再经微滤处理后,产水浊度小于0.2 NTU,膜污染指数SDI值小于4.0,微滤系统运行稳定;反渗透系统在不同回收率条件下运行稳定,无明显的污堵现象,系统脱盐率大于98%,单支膜的脱盐率大于99%。反渗透产水含盐量低于510 mg/L,可用作循环水补充水、脱硫工艺用水等电厂其他系统的补水。 相似文献
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A. A. Panteleev V. V. Bobinkin S. Yu. Larionov B. E. Ryabchikov V. B. Smirnov D. A. Shapovalov 《Thermal Engineering》2017,64(10):781-786
When designing large-scale water-treatment plants based on reverse-osmosis systems, it is proposed to conduct experimental-industrial or pilot tests for validated simulation of the operation of the equipment. It is shown that such tests allow establishing efficient operating conditions and characteristics of the plant under design. It is proposed to conduct pilot tests of the reverse-osmosis systems on pilot membrane plants (PMPs) and test membrane plants (TMPs). The results of a comparative experimental study of pilot and test membrane plants are exemplified by simulating the operating parameters of the membrane elements of an industrial plant. It is concluded that the reliability of the data obtained on the TMP may not be sufficient to design industrial water-treatment plants, while the PMPs are capable of providing reliable data that can be used for full-scale simulation of the operation of industrial reverse-osmosis systems. The test membrane plants allow simulation of the operating conditions of individual industrial plant systems; therefore, potential areas of their application are shown. A method for numerical calculation and experimental determination of the true selectivity and the salt passage are proposed. An expression has been derived that describes the functional dependence between the observed and true salt passage. The results of the experiments conducted on a test membrane plant to determine the true value of the salt passage of a reverse-osmosis membrane are exemplified by magnesium sulfate solution at different initial operating parameters. It is shown that the initial content of a particular solution component has a significant effect on the change in the true salt passage of the membrane. 相似文献
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采用反渗透—混床系统进行锅炉补给水处理 总被引:4,自引:0,他引:4
介绍了反渗透-混床除盐系统处理锅炉补给水时的运行经验。经4年的实践表明:(1)采用机械搅拌澄清池和三级过滤的系统,可以达到反渗透组件对进水水质的要求;(2)反渗透组件的脱盐率每年的降低1%-2%,在设计中必须考虑;(3)一般情况下,反渗透装置的出水应经过除碳器再送入混床;(4)混床的出力必须有足够的余量,以免影响供水。 相似文献
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K. M. Abdullaev M. M. Agamaliev I. A. Malakhov V. E. Kosmodamianskii A. A. Askerniya O. O. Dadasheva 《Thermal Engineering》2008,55(4):299-304
Technologies of preparing makeup water for boilers are considered, central to which is combined use of ion-exchange and reverse-osmosis methods for treatment of seawater and ocean water. It is shown that the concentrate produced by reverse-osmosis plants can be used as preferred material for regenerating filters at the stages during which source water and water at the outlet from the reverse-osmosis plant are treated with Na-and Mg-Na-cation exchange resins. 相似文献
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反渗透技术在锅炉酸洗废液处理中应用 总被引:3,自引:0,他引:3
对电厂锅炉柠檬酸酸洗废液的处理进行了模拟试验研究,采用反渗透技术和循环方式,对醋酸纤维素膜、低压复合膜、海水膜等3种反渗透膜的处理效果进行了比较和分析,得出结论:处理效果最好为海水膜,低压复合膜次之,醋酸纤维素膜较差;最适合于锅炉酸洗废液反渗透处理的膜是海水膜,处理方式是循环方式.也对经反渗透浓缩后的浓缩废液处理方法进行了试验研究,认为最佳处理方式为浓缩液经过除铁、调整pH值后,进行喷雾干燥回收柠檬酸钠盐,酸洗废液即可彻底地处理,达到无污染排放.将反渗透处理技术应用于某火电厂300 MW机组锅炉炉前系统柠檬酸酸洗废液的处理,达到了预期的目的. 相似文献
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侯马发电厂新建2台机组,拟利用城市污水深度处理后作电厂循环冷却水。侯马市城市污水水质复杂,为确保成功地应用Bio-Sac流动床生物膜与石灰混凝及过滤的深度处理侯马市城市污水,使出水能满足电厂循环冷却水的水质要求,在现场进行了小型试验。试验结果表明:污水BOD5的去除率接近100%;化学耗氧量CODcr低于20mg/L;氨氮为1mg/L左右;出水经过滤器后的浊度值低于0.5FTU;磷的去除率接近100%。城市污水经流动床生物膜与石灰相结合的深度处理后,可用于电厂循环冷却水补充水。 相似文献
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国电泰州发电有限公司一期2×1000MW超超临界燃煤机组为新建工程,其工业废水处理系统自调试、运行以来,暴露出一些问题,主要表现在污水泵故障、脱水机无泥可脱、乙二胺四乙酸(EDTA)回收困难、处理后废水未能完全利用等。对此,文章提出了相应的处理措施和建议,以求工业废水处理系统合理的运行与维护。 相似文献
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全膜法水处理技术在电厂锅炉补给水处理中的应用 总被引:3,自引:1,他引:3
广州恒运电厂将原有出力为200 t/h的传统离子交换水处理系统改造为出力为320 t/h的全膜法水处理系统,实际应用表明:(1)全膜法水处理工艺占地小,320 t/h的全膜法水处理系统与传统离子交换水处理系统相比,减少占地约3000 m2;(2)海水倒灌期间仍可正常运行,全年节约自来水用量达150万t;(3)工艺简单,容易实现自动控制;(4)产水品质高;(5)无废酸碱排放,有利环保。 相似文献
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Fundamental research on thermal plasma technology for treatment of low-level radioactive solid waste
Tadashi Amakawa Kazuo Adachi Shinji Yasui Tsuginori Inaba 《Electrical Engineering in Japan》1995,115(5):1-9
The technology for treatment of low-level radioactive solid waste generated in nuclear power plants is expected to be established. The main problems are volume reduction and stabilization of radionuclides acceptable for final disposal. Thermal plasma technology offers advantages for such waste treatment because of the easy supply of heat at high temperature independent of chemical and physical properties of the waste. New, noncontaminated waste, such as metallic, inorganic and combustible materials, have been melted in a crucible furnace. A transferred-type of a dc plasma torch with a solid electrode was used as heat source and rated up to 50 kW. The main results obtained are as follows:
- 1 (1) Metallic and inorganic materials can be melted and vitrified. Combustible materials can be pyrolyzed. Consequently, high-volume reduction rates can be attained.
- 2 (2) Compressive strength of solidified products is more than twice as great as that of cement composites used for solidification of the liquid waste. Leaching rate of main components of the slag layer is in the same order of that of the high-level radioactive waste glass.
- 3 (3) To obtain a guiding principle for design of an off-gas treating system, compositions of the off-gas and properties of the dust entrained in the off-gas are clarified.