共查询到20条相似文献,搜索用时 187 毫秒
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人工湿地处理电镀废水研究进展 总被引:3,自引:0,他引:3
介绍了人工湿地处理电镀废水的原理及其在我国的应用,分析了人工湿地在处理电镀废水上的优势,并对其在电镀废水处理中的应用前景进行了展望,指出了利用人工湿地处理电镀废水的发展趋势及技术应用中的一些关键问题. 相似文献
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人工湿地处理含重金属废水的研究现状及展望 总被引:6,自引:0,他引:6
人工湿地是一种集环境效益、经济效益及社会效益为一体的污水处理技术,因其具有低投入、低能耗、低管理费用、抗冲击力强等优点而成为近年来国内外研究的热点。本文从人工湿地处理各种重金属的去除机理、人工湿地处理含重金属的废水的影响因素方面对近年来人工湿地处理重金属的研究现状予以综述,并对人工湿地处理重金属的研究前景进行了展望。 相似文献
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人工湿地处理高盐废水研究进展 总被引:2,自引:0,他引:2
《工业水处理》2021,41(3)
在工业生产和海水利用中,会产生大量高盐废水。简要介绍了人工湿地处理高盐废水的机理以及影响人工湿地处理高盐废水的因素(湿地构造、进水条件、环境因素),总结了目前人工湿地技术在强化高盐废水处理领域的研究现状,并对该领域的研究进行了展望,为利用人工湿地处理高盐废水的相关研究提供参考。 相似文献
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气浮-生物接触氧化-臭氧氧化组合工艺处理冷轧碱性含油废水 总被引:1,自引:0,他引:1
为满足新的钢铁工业水污染物排放标准,应对新增、改造机组带来的废水量提升,某冷轧厂新建稀碱含油废水处理系统处理稀碱含油废水、平整废水和乳化液废水的预处理后出水。设计采用气浮-生物接触氧化-臭氧氧化组合工艺,出水满足GB 13456—2012《钢铁工业水污染物排放标准》表3要求。工程运行结果表明,新建稀碱含油废水处理系统出水水质满足设计要求,运行成本约为3元/m3。 相似文献
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为确定某种特定的冷轧油乳化液配制时的工艺条件,研究了复配乳化剂种类、用量、乳化温度、乳化时间等参数对该乳液稳定性的影响规律。研究表明:将醚类与酯类的非离子乳化剂进行乳化,温度50℃,复配乳化剂用量占总乳化液的0.56%,油水体积比1∶19,搅拌时间50min下制得的冷轧油乳化液的稳定性符合我国现行乳化液稳定性行业标准。 相似文献
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The effect of cold rolling on the mechanical properties of polymers, viz., acetal, nylon 66, poly(vinyl chloride) and polycarbonate has been studied. The yield strength, Young's modulus, and hardness increase with increasing cold work, except for a slight drop in these properties at low values of cold work. The ductility increases with rolling to a maximum and drops with further reduction. At the same time, the tensile strength increases continuously with rolling. This conspicuous occurrence of the increase in ductility with a simultaneous increase in tensile strength for polymers, unlike that in metals, is explained considering the morphological changes produced in polymers upon cold rolling. It is shown that this typical behavior is not due to the unique loading or heating and cooling cycle involved in the rolling process. 相似文献
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Muhammad Ajmal Syed Abid Ali Hajira Tahir Muhammad Raza Shah Muhammad Saad 《European Journal of Lipid Science and Technology》2021,123(10):2000280
Many advanced methods are developed for the synthesis of emulsions in the literature, but the effect of imperative parameters of emulsion like oil concentration, pH, temperature, and time on the emulsion stability index (ESI) by design of experiments have not been studied previously. The ESI is an important parameter of emulsion to run the industrial process extensively and reflects the emulsion efficiency to sustain against instability like creaming, coalescence, and flocculation. In the present study, the research plan consists of three phases. In the first phase, the synthesis of an eco-friendly and cost-effective mustard oil-based nanoemulsion with a suitable selection of the surfactant on the bases of the polydispersity index (PDI) is developed. In the next phase emulsions, characteristic properties are scanned by employing various techniques and antirust property compared with reference emulsion. Finally, the impact of emulsion's parameters on ESI is studied by factorial design. The findings that depict the impact of parameters of oil concentration and time on ESI are found influential, whereas the effect of pH and temperature is insignificant. Therefore, good characteristic results, stability, and the inhibition against rust of newly developed emulsion can be adapted to run the cold rolling process smoothly. Practical Application: In the present era, metal processing industries are forced to explore the environmentally friendly oil-in-water emulsions (that used as an interface, lubricant, cooling, and antifrictional agents in cold rolling industries) to overcome increasing environmental pollution. Mustard oil-based emulsion modified by nanoparticles (Nps) offers a good source of eco-friendly, cost-effective, and economic booster for metal processing industries. The antimicrobial properties of mustard oil are well defined in previous research articles. Such oil is a magnificent source for the synthesis of the emulsion and modification of mustard oil-based emulsion with titanium dioxide. Nps provide significant protection against rust. Such applications can encourage the use of mustard oil-based nanoemulsion for metal processing industries. 相似文献
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冷轧厂电镀锌工艺的改造,引起废水中锌含量增大到800mg/L,需处理后排放,采用中和-薄膜过滤技术相结合的工艺处理电镀锌废水,可使废水中锌含量达到国家排放标准,处理后的废水回收利用。 相似文献
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介绍了中钢住友越南合资公司冷轧废水处理工程的废水性质、主要工艺流程、相关设备及构筑物设计运行参数和实际运行效果。运行实践证明,该工程系统运行稳定,工艺可靠,出水水质优于合同约定的排放标准要求。 相似文献