含铬废物,chromium waste
1)chromium waste含铬废物
1.The thermodynamics of chromium chlorides and oxychlorides,involved low-valence chromium in thechromium waste incineration processes of Cr/H/O/Cl system,including the geometry structure,vibration frequencies and heat of formation,were investigated using different quantum chemistry methods and basis sets.含铬废物焚烧过程中,会产生不同价态的气态铬化合物,高价态铬毒性高,低价态铬毒性低;需对该过程的反应机理进行深入研究。
英文短句/例句
1.Study on Microwave Assisted Detoxification of Chromate Waste with Biomass;微波促进生物质解毒含铬废物的研究
2.Study on elementary reaction CrOCl_2+OH→CrO_2Cl+HCl in chromium waste incineration含铬废物焚烧中CrOCl_2+OH→CrO_2Cl+HCl基元反应研究
3.Quantum chemistry study on thermodynamics of gas phase low-valent chromium chlorides,oxychlorides in waste incineration processes含铬废物焚烧过程中气态较低价铬的氯化物、氯氧化物热力学性质的量子化学研究
4.Study on Detoxification of Wastewater Containing Hexavalent Chromium by Microoganisms;高浓度含铬（Ⅵ）废水的微生物解毒研究
5.Study on Adsorption of Cr~(6+) in Water by Non-living Biomass Material非活体生物质对含铬废水的吸附研究
6.Application of biological iron sulfide composites in chromium-containing wastewater treatment and chromium reclamation生物硫铁复合材料处理含铬废水及铬资源化研究
7.Study of Process and Mechanism of Chromium Adsorption on Natural Biomineralized Goethite;生物矿化针铁矿处理含铬废水及其机理研究
8.The Study of the Microbial Disposal Technology and Mechanism for the Chromium Wastewater Treatment;含铬重金属废水微生物处理技术与机理研究
9.Cr(Ⅵ)-containing wastewater treatment coupled with electricity generation using microbial fuel cell微生物燃料电池处理含铬废水并同步产电
10.Research and application of mineral materials absorbing Cr in wastewater treatment含铬废水处理采用的矿物材料研究与应用现状
11.active carbon chrome-bearing waste water processing machine活性炭含铬废水处理机
12.Study on Preparation of Chromium-enriched Brewer"s Yeast by Using Chromium-containing Leather Waste;利用含铬废革料制备富铬酵母的研究
13.Study on electrochemical disposal and recycle of chromium from effluents电化学处理含铬废水及铬的回收研究
14.The Study of Construction, Capability, and Mechanism on Genic Engineering Strains Used in Chromium-containing Wastewater Adsorption;含铬废水生物处理的基因工程菌的构建、性能及机理研究
15.Experimental Study on the Treatment of Electroplate Wastewater Containing Cr~(6+) with Combined Process of Electrolysis and Microbe;电解—微生物法组合工艺处理含铬电镀废水的试验研究
16.The study of biosorption for the wastewater of Cr(VI)with the wastes of brewing industry fermentation by-products啤酒工业发酵副产品用于含铬废水处理的生物吸附研究
17.Property Analysis of Nanosized Iron Sulfide Produced by Sulfate Reducing Bacteria and Its Application in the Treatment of Wastewater Containing High Concentration of Cr(Ⅵ)生物硫铁纳米材料特性分析及其处理高浓度含铬废水研究
18.Lead Chromate Production from Chromium Electroplating Wastewater and Sludge电镀含铬废水及其沉淀污泥中铬的回收工艺
相关短句/例句
chromed leather wastes含铬废弃物
3)chrome-solid waste含铬固体废物
4)wastewater containing chromium含铬废水
1.Application of plant biomass in purification ofwastewater containing chromium;农林生物质在含铬废水处理中的应用
2.Coagulation-microfiltration process for the treatment ofwastewater containing chromium;混凝-微滤膜工艺处理含铬废水
3.Treatment ofwastewater containing chromium fromlaboratory by ferrite-centrifugation technology;铁氧体-离心分离技术处理实验室含铬废水的研究
5)chromium-containing wastewater含铬废水
1.Study on the treatment ofchromium-containing wastewater by sulphonated peat coal;磺化泥炭吸附处理含铬废水的研究
2.Pretreatment ofchromium-containing wastewater with steel slag and solidification of waste steel slag and chromium residue;钢渣预处理含铬废水及其废渣与铬渣的固化
3.Research on the adsorptive treatment ofchromium-containing wastewater by active carbon;活性炭对含铬废水的吸附处理研究
6)waste water containing chromium含铬废水
1.It is discussed that the method on treatingwaste water containing chromium by different kinds of peat.重点阐述了用不同类型的泥炭处理含铬废水的效果，论证了净化能力以泥炭藓泥炭为最佳，其次是高有机质的草本泥炭。
2.Based the relevant literature,the progress of treatment ofwaste water containing chromium by ion-exchange method and adsorption method was analyzed, and some advise and emphases in the field of research for the two methods application to treat chromium-containing wastewater were put forward.通过对目前含铬废水不同处理方法的比较,认为离子交换法及吸附法是效果较佳的处理方法。
延伸阅读
含铬含钒废水处理设计含铬含钒废水处理设计design of chromium and vanadium ions-containing waste water treatmenthange hanfan fejshui ehuli sheji含铬含钒废水处理设计(de抓gn of chromi-um and vanadium ions一eontaining waste watertreatment)含铬含钒废水含有毒性较强的六价铬离子和五价钒离子。铬在人体内可造成血中缺氧，导致细胞窒息;六价铬是致癌物质，并能在组织内累积。钒的颜色阂浓度界限为。.lmg/L，味觉阑浓度界限为0.smg/L，影响地面水自净作用的浓度为smg/L，动物的最小致死量为lmg/kg·对于含铬含钒超标的废水应进行处理，使其中有害物质含量符合国家或地方规定的排放标准。废水处理设计的主要内容是:根据废水的来源和特性，选择经济合理的处理方法，处理流程和相应的设施组成。废水来源和特性按所含铬、钒种类可分为含铬废水，含铬、钒废水和含钒废水。含铬废水主要包括:(1)金属铬生产过程中铭浸出废渣的沥滤液，每升废液含Cr6+可达几百毫克;(2)冷轧薄钢板镀锌机组排出的废水，包括含Cr‘+浓度为1~1.89/L，pH值为2一3的高浓度废水和含Cr6+浓度约Zoomg/L，pH值为5一6的漂洗废水;(3)电镀过程排出的废液，包括每升含Cr6+几十毫克的镀铬、钝化漂洗废水和含cr6+约2。。g/L的废槽液;(4)冲洗设备和地坪等的含铬废水。含铬、钒废水主要是五氧化二钒生产过程中的五氧化二钒沉淀分离尾液。当所用原料含有铬时，尾液中除含钒约50~10omg/L外，还含Cr6+约100一250mg/L，pH值为1.8~2.5，水温约80℃。含钒废水主要是五氧化二钒沉淀分离的尾液。其中含钒约50~loomg/L，pH值为1.8一2.5，水温约80℃。基本处理方法因废水所含成分和浓度不同，所采用的处理工艺也不同。含铬废水处理常用还原沉淀法、离子交换法、钡盐法或电解法处理。(l)还原沉淀法。先用硫酸亚铁或钢材酸洗废液或亚硫酸氢钠或二氧化硫等还原剂，在酸性条件下，将废水中Cr6+还原成低毒的Cr3+。一般再投加石灰使Cr3+沉淀，并中和废水中的游离酸。此法处理后的出水含Cr6+不大于0.Zmg/L，Crs+不大于。.smg/L。如用亚铁作为还原剂，氢氧化钠作为中和剂，将沉淀的泥渣加热氧化，可制成磁性的铁氧体。还原沉淀法在国内外最为常用，适用范围较广，且效果可靠。(2)离子交换法。一般可将废水先通过H型阳树脂床，去除废水中的Fe3+、Cr3+等阳离子，进行纯化，经纯化的含铬酸阴离子废水可直接反回生产使用，对于冷轧薄钢板镀锌机组排出的高浓度含铬废水常采用此法进行处理。如欲回收铬酸，可将废水再经OH型阴树脂床进行处理，阴树脂用碱液洗脱再生，将洗脱液经阳树脂床除去钠离子，可得铬酸。阳树脂可用酸再生。
