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电镀废水膜法回用工艺概况 总被引:1,自引:0,他引:1
根据电镀种类和电镀工艺将电镀废水分为5种类型:前处理废水、含氰废水、含铬废水、综合废水和混排废水。讨论了电镀废水的主要来源及其进水水质状况。概述了电镀废水膜处理工艺。以3个目前运行比较稳定的电镀废水膜回用工程方案为例,介绍了膜法回用电镀废水的工艺流程。 相似文献
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介绍了电解法在处理垃圾填埋场渗滤液,粪便污水,小便池尿垢,含油废水,含氰废水,含镉废水,电镀废水,金属着色废水,碱氨蚀刻废液,制药废水,化肥厂废水,选矿药剂生产废水,墨水生产废水,医院废水,以及餐饮废水中的应用. 相似文献
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本文扼要地评述了近年来国内外各种电镀废水治理技术的应用概况及发展动向。内容包括(一)六价铬废水;(二)氰化镀铜、锌及铜合金废水;(三)镀镉废水;(四)镀镍废水;(五)非氰化物镀铜废水;(六)非氰化物镀锌废水;(七)镀金废水;(八)镀银废水;(九)酸、碱混合废水以及(十)电镀废水的综合治理系统,并列出了主要参考文献234篇。 相似文献
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智成公司含氨氮废水有合成氨系统废水、尿素废水、纯碱废水。采用非等压醇烷化工艺处理合成氨废水,已实现无氨氮废水排放;对造气废水循环利用之后实现零排放;采用尿素深度水解装置处理尿素废水,最终排出尿素≤5ppm;对纯碱废水进行蒸氨处理,氨氮浓度已低于200mg/L。 相似文献
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A model is developed for the sedimentation from a suspension of two particle species of unequal densities and of different sizes. The composition and the thickness of various layers in the sediments are predicted using graphical and analytical methods. The model predictions were in excellent agreement with experimental results, when the particle size ratio was ≥ 108. When size ratio of the particles was 2.60 and 4.31 the agreement occurred in about 50 percent of the cases. 相似文献
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P. P. Budnikoff 《Journal of the American Ceramic Society》1924,7(11):817-820
The different analytical methods proposed for the evaluation of gypsum have been subjected to an experimental test. A combination method, consisting of a fusion with KHCO3 and determination of CaO by KMnO4 titration, the SO3 by Andrews method of titration of BaCrO4 has been found to give very reliable results with the least consumption of time. 相似文献
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酚醛树脂热降解动力学研究 总被引:8,自引:2,他引:6
用热失重非等温法对不同甲醛,苯酚魔鬼洋比的酚树脂进行了热降解动力学研究。结果表明,甲醛,苯酚摩尔比为1.5时,酚醛树旨的热发活化能最高。耐热性最好。 相似文献
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面对日益激烈的市场竞争,摩托车油箱外观质量越来越成为影响销售的因素之一。文章介绍了改进工艺后的油箱涂装,该涂装体系提高了油箱外观的丰满度,降低了油箱涂装的生产成本。 相似文献
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A novel technique serves to monitor instantaneous rates of loss of a volatile solute from a suspended drop during drying. A highly sensitive electron capture detector is used to monitor concentrations of SF6 released into a flowing gas stream from a suspended, drying drop. Simultaneously, the appearance and morphological development of the drop are monitored with a video camera. This provides the wherewithal of relating instantaneous rates of loss of the volatile solute to particular events during the development of particle morphology.
Initial experiments have been carried out with drops of aqueous solutions of glucose, sucrose, maltodextrin and coffee extract. The results clearly display the onset of the volatiles-retentive selective diffusion phenomenon. There is also substantial loss of the volatile component later in the drying process, when the drops undergo repeated ex ansion, bursting and cratering due to the formation of internaf bubbles. These experiments appear to be the first quantitative demonstration of major losses accompanying changes in drop morphology. 相似文献
Initial experiments have been carried out with drops of aqueous solutions of glucose, sucrose, maltodextrin and coffee extract. The results clearly display the onset of the volatiles-retentive selective diffusion phenomenon. There is also substantial loss of the volatile component later in the drying process, when the drops undergo repeated ex ansion, bursting and cratering due to the formation of internaf bubbles. These experiments appear to be the first quantitative demonstration of major losses accompanying changes in drop morphology. 相似文献
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本文以三种典型煤的碳燃烧为研究对象,分别采用简单一维沉降燃烧方式和等温加热燃烧方式,实验研究了煤在快速加热条件下,其碳的初期和中,后期燃烧过程。以实验为基础,建立了煤的碳燃烧模型,变工况数值模拟了煤的碳燃烧过程,揭示了煤不同条件下的单颗粒碳燃烧特性。 相似文献
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归纳了当今卫生陶瓷工业的发展现状和水平 ,对窑炉产业提出了的新要求 ,分析了某一新型窑炉的特点 ,对发展我国陶瓷窑炉产业提出了建议 相似文献
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提出了有双官能团酸相对分子质量调节剂存在时己内酰胺水解聚合过程动力学模型 ,并进行了实验验证 .对不同温度下聚合产物组成和各影响因素对数均聚合度的影响进行了模拟 .结果表明 ,数均聚合度随进料中水、氨基己酸及相对分子质量调节剂浓度的增加而减小 ,其中水的浓度影响较显著 ,且在考察浓度范围内相对分子质量调节剂浓度 [R]0 ≤ 0 0 0 68mol·kg- 1 时数均聚合度基本不变 ,而 [R]0 >0 0 0 68mol·kg- 1 时数均聚合度则显著减小 .无氨基己酸及相对分子质量调节剂时数均聚合度亦随水浓度增加而减小 . 相似文献
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