共查询到19条相似文献,搜索用时 156 毫秒
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工业废水水处理达到国家二级排放标准的外排水,采用双膜法进行深度处理,经过预处理、超滤、反渗透、混床产出合格的脱盐水,出水水质电导率小于10μS/cm,二氧化硅含量小于0.1 mg/L,该工艺环保又节能。 相似文献
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张文生 《有色冶金设计与研究》2019,(4)
赤峰金剑铜业技改项目生产原水采用城市中水。该中水水质平均硬度为381.09 mg/L、碱度217.72 mg/L、COD 32.25 mg/L,进水水质相对较好。为保证生产用水的安全性,需对中水进行处理。设计采用"预处理+超滤+二级膜处理+EDI深度处理"的流程,经处理后的一级反渗透出水用作循环水补充水,另一部分一级反渗透出水经二级反渗透及EDI深度处理后出水用作锅炉补给水。采用工艺处理后,产水水质、排水水质均可达到国家标准。 相似文献
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柳钢1550mm冷轧板带生产线含酸碱废水、含油废水和含平整液废水,配套有废水处理站,处理后废水达到国家排放标准(悬浮物:≤70mg/L、石油类:≤8mg/L、CODOr≤100mg/L、pH:6-9)后排放。平整液废水中含有有机酸、有机胺等,废水处理难度较大,处理过程包括了预处理阶段、催化氧化阶段、生化处理阶段和膜技术处理阶段,只有将每个阶段的工艺参数调节好,并合理地维护好设备,才能达到国家排放标准。 相似文献
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介绍了高速线材浊环水处理物理法与化学法的原理及特点,并针对该项目确定了采用综合两种处理方法并引入稀土磁盘分离净化技术的工艺流程,最终该项目投产后,浊环水出水水质为SS≤25 mg/L、Oil≤5 mg/L,达到了设计要求。 相似文献
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巴彦淖尔紫金锌冶炼厂二期改扩建后,中性浸出液采用两段高温除钴三段净化工艺参数为:反应温度75~90℃、锌粉添加量0.5~5.5kg/m3、锑盐添加量2~6g/m3,深度除杂效果显著,其中Cu≤0.20mg/L、Cd≤0.3mg/L、Co≤0.2mg/L、Sb≤0.02mg/L,满足48h电积要求。 相似文献
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研究了采用铁碳微电解方法回收铜矿山含铜酸性废水中铜离子的可行性,并与铁屑法进行对比。研究表明,铁碳微电解法效果不同于铁屑法,具有去除效果好、反应速度快、所需时间短和节省铁屑用量的优点。反应时间比铁屑法节省三分之二以上,去除效率高20%左右。采用铁碳微电解法处理后,在处理时间30min,铁碳质量比为1:1和铁碳总量为2g条件下,实际铜矿山含铜酸性废水经一次处理后铜离子去除率达到95.6%,实际废水中铜离子浓度从98.6mg/L下降到4.3mg/L。铁碳微电解法是一种处理矿山含铜酸性废水及回收其铜资源的实用有效方法,具有很好的推广应用价值。 相似文献
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黄沙坪铅锌矿选矿废水治理研究 总被引:2,自引:2,他引:0
选用中和-聚铁絮凝-两级沉淀工艺处理黄沙坪铅锌矿的选矿废水。根据废水自身的特点,将偏酸性的硫精矿溢流水与偏碱性的尾砂水按1:2比例混合,混合后废水的pH值为10.2,适于进行后续混凝处理。混凝处理选用聚铁为絮凝剂,投加量为0.3mg/L,助凝剂聚丙烯酰胺的投加量为0.5mg/L。处理出水的80%回用为生产用水,其余出水达标外排。该工程节约了水资源,同时减少了对周边环境的污染,达到了企业清洁生产的目的。 相似文献
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D. W. BLOWES C. J. PTACEK S. G. BENNER K. R. WAYBRANT J. G. BAIN 《Mineral Processing and Extractive Metallurgy Review》2013,34(1):25-37
Abstract Laboratory tests and field-scale demonstrations indicate that permeable reactive walls, designed to induce bacterially mediated sulfate reduction within aquifers, have the potential to prevent the discharge of acidic, metal-rich waters. Laboratory batch studies were conducted to determine optimal mixtures of organic materials. Column studies were conducted to evaluate the potential for sulfate reduction and metal sulfide precipitation under dynamic flow conditions at groundwater velocities similar to those observed in the field. These laboratory studies established that sulfate reduction and metal sulfide precipitation mechanisms result in decreases in the concentrations of sulfate and iron and other metals. In the column experiments, sulfate and Fe were removed from synthetic mine drainage water at rates of 500-800 mmol/day/m3. In a pilot-scale field study, test cells installed into an aquifer containing a plume of mine waste-impacted groundwater, induced sulfate reduction and metal-sulfide precipitation. Within a flow path of less than one metre sulfate reduction and metal sulfide precipitation reactions resulted in the removal of iron, and production of alkalinity to the extent that the acid generating potential of the plume water was removed. A full-scale porous reactive wall was installed at the same site in August 1995. Comparing water entering the wall to treated water exiting the wall; sulfate concentrations decrease from 2,400-4,500 mg/L to 200-3,600 mg/L and Fe concentrations decrease from 250- 1,300 mg/L to 1.0 - 40 mg/L. After passing through the reactive wall, groundwater is transformed from acid producing to acid consuming. 相似文献
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露天矿山进入凹陷开采后,将面对如何解决外排水的问题。江西铜业集团公司永平铜矿结合矿山采掘工作面的实际情况,设计出组合式浮船泵站,解决了雨季矿山凹陷排水问题,使采区生产得以正常进行。 相似文献
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在地下矿山测量中,使用传统的经纬仪、水准仪进行测量,不但外业、内业测量计算工作量大,而且影响测量精度的因素很多,使用全站仪不仅可减少部分因素的影响,提高测量精度,而且可减轻测量人员的劳动强度,从而提高工作效率。笔者阐述了全站仪在地下矿山测量中的应用实践,并提出了一些有益建议。 相似文献
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试验研究了不同氧化工艺与铁盐混凝工艺联合处理矿井水中砷的效果。原水p H值为7.67,砷质量浓度为1 mg/L,采用铁盐混凝法处理时,Fe与As的质量比为6∶1、反应时间为30 min,砷的去除率为62%;当其与空气氧化法联合处理时,Fe与As的质量比为6∶1、反应时间为30 min、曝气量为0.05 m~3/h,砷的去除率为69%;当其与过氧化氢氧化法联合处理时,Fe与As的质量比为6∶1、反应时间为5 min、过氧化氢用量为0.01 m L/L,砷的去除率为99%。试验结果表明:引入氧化体系有助于含砷矿井水的处理,提高了砷的去除率;采用Fenton氧化体系与铁盐混凝法联合处理工艺,降低了铁盐药剂用量,提高了砷的去除率,缩短了反应时间。 相似文献
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针对紫金山铜矿低质量浓度酸性废水通过漂白粉去除氰化物-石灰中和处理后浓密上清液中总铜质量浓度仍超标的问题,研究了絮凝剂类型、絮凝剂用量、底流回流量、废渣类型、废渣添加量等因素对中和渣浆沉降性能的影响。其研究结果表明:添加紫金山铜矿萃余液中和渣膏体浓密机底流进行辅助沉降,当体系固体质量分数增加到1.5%、絮凝剂AP8120添加量为3 mg/L时,沉降0.5 h后的上清液中总铜质量浓度为0.056 mg/L,出水水质达到《污水综合排放标准》(GB 8978—1996)一级排放标准。 相似文献
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Panuwat Taerakul Mikko Lamminen Yontian He Harold W. Walker Samuel J. Traina Earl Whitlatch 《Canadian Metallurgical Quarterly》2004,130(7):816-823
In this research, we examine the long-term ( ~ 4 years) behavior of fixated flue gas desulfurization (FGD) material grout following placement within the Roberts–Dawson underground coal mine. Surface water and groundwater samples were collected to examine the impact of grouting on water quality, and core samples were obtained to assess the geochemical stability of the grout material. Surface water samples collected from the main seep at the Roberts–Dawson mine indicated that 4 years after grout placement the long-term fluxes of acidity, iron, sulfur, and calcium were slightly elevated compared to pregrout conditions. The long-term discharge of these constituents was likely due to continued dissolution of grout material (for Ca and S) as well as changes in flow paths and subsequent solubilization of metal salts accumulated within the mine voids (for acidity, Fe, Al, and S). Although the fluxes of these elements were elevated, no measurable deleterious impact was observed for the underlying groundwater or adjacent surface water reservoir. Groundwater samples collected from monitoring wells installed within the grout material indicated that acid mine drainage waters were neutralized by the grout material. Mineralogical analyses demonstrated minimal penetration of mine drainage water into the high strength fixated FGD material grout, and little weathering of the material was observed. These data indicate that the high strength fixated FGD material grout injected into the Roberts–Dawson mine was geochemically stable and could locally neutralize mine drainage waters. However, more complete grouting and more extensive mine flooding is likely needed in order to bring about significant improvements in seep water quality. 相似文献