王庄煤矿矿井水深度处理技术研究

针对王庄煤矿矿井水水质特征,通过对王庄煤矿矿井水深度处理技术研究,提出适合该矿的水处理方案,并进行了成本核算与效益分析,以期为矿井水回用提供科学的技术参数,使矿井水得到综合利用,实现经济效益和环境效益的统一。     

改性丝光沸石处理含重金属离子矿井水试验研究

天然丝光沸石经改性可增强其阳离子交换能力.在静态条件下,研究了改性Na型沸石颗粒处理含重金属离子矿井水时,沸石用量、pH值、温度、离子共存等因素对离子交换效果的影响并作出分析.结果表明:在60℃、pH值为5.2、反应时间为80min条件下,选用粒度为80～100目的Na型沸石投加量按10.0g/L处理矿井水,能使矿井水中Cd2+、pb2+、Cu2+、Zn2+重金属离子含量降低到国家规定的排放标准之下.     

聚合硫酸铁处理矿井水试验研究

采用混凝土沉降法，以聚合硫酸铁为混凝土剂对矿井水进行治理，取得了良好的效果，并探讨了原水硬度对混凝沉降效果的影响。     

絮凝沉淀法处理矿井水

介绍了竖流式沉淀池在絮凝沉淀过程中影响其稳定运行的因素,针对五阳热电厂净水站竖流式沉淀池投运以来曾出现几次出黑水现象进行原因分析,提出了一些针对性的预防措施,介绍了实施效果。     

矿井水微量油处理实验室模拟研究

通过模型开展了矿井水微量油处理的实验室模拟试验研究。研究结果显示，该工艺对矿井水中微量油的去除率可以达到96％。     

浅析物理化学法处理矿井水

通过实例论述了物理化学法处理矿井水的工艺及其所产生的经济、社会和环境效益，供煤矿矿井水处理工作借鉴。     

二氧化钛光催化深度处理矿井水

以活性炭负载二氧化钛为核心的后期处理工艺深度处理矿井水,在处理量为1m3/h的条件下,COD由初始的31mg/L降低到8.1mg/L。TOC由初始的33mg/L降低到13.2mg/L。石油类去除率是91.8%。细菌总数去除率95.7%,大肠菌群去除率100%。     

阜新矿区矿井水净化处理的实验研究

通过对阜新矿区矿井水资源实验研究,分析了矿井水再利用的可行性。根据阜新矿区矿井水的特点,进行了气浮实验和反渗透实验研究,其结果表明,矿井水经过气浮和反渗透处理后,可达到饮用水标准。该研究成果可以在处理同类矿井水时借鉴,具有一定的理论意义和使用价值。     

矿井水混凝实验研究

长期以来,在煤炭生产中产生的矿井水大部分都被作为废水排放掉,极大的浪费了宝贵的水资源。文中以海州矿排水坑矿井水为例,研究矿井水混凝技术,使其经过简单处理后达到回用的目的。实验方案经过水质检验和理论分析综合确定。在实验中通过改变混凝剂的投放量,测量浊度的数值以获得各混凝剂的投放量与浊度去除率的变化曲线,从而分析确定最佳混凝剂及混凝剂最佳投量。实验结果表明,对于此种矿井水聚合氯化铝的混凝效果最好,处理后水的色度和浊度有了明显的降低。     

Heavy Metal Pollution Index of Ground Water of an Abandoned Open Cast Mine Filled with Fly Ash: a Case Study

Ground water samples were collected from the periphery of a fly ash filled open cast mine, from within the mine property, and from a half kilometre away from the site. Concentrations of metals such as Cu, Zn, Cd, Pb, and Cr were consistently below the permissible limit for drinking water, but concentrations of Fe and Mn were above the permissible limit. The data were used to calculate a heavy metal pollution index (HPI). The HPI of the ground water of the ash filled mine was 36.67, which was below the critical index limit of 100. The HPI of Dhanbad Township ground water, from very near to the mining area, was 11.25. The results indicate that leachate from the fly ash filled mine has apparently contaminated the ground water to a limited extent.     

粉煤灰中重金属Pb的淋滤实验研究

通过盐酸-高氯酸-氢氟酸法对粉煤灰进行消解处理,并用自来水、天然雨水、模拟雨水3种淋滤介质对粉煤灰进行淋滤实验,采用导数-原子捕集-火焰原子吸收法(D-AT-FAAS)对淋滤前后溶液和粉煤灰中重金属Pb的含量进行测定,得出粉煤灰的淋滤溶液中重金属的变化规律[1]。     

Reducing the Hardness of Mine Water Using Transformed Fly Ash

In the Jharia Coalfields, Dhanbad, India, huge quantities of water are pumped out of underground mines to make mining possible. The water contains high concentrations of total hardness, which makes it unsuitable for domestic use. Waste fly ash generated nearby from burning the coal in thermal power plants can be converted into a zeolitic mineral, and used to treat the mine water. The fly ash zeolite was determined to be effective in removing total hardness from the mine water. At a 40 g/L dose of fly ash zeolite, approximately 72% of the hardness was removed from the mine water. However, the mine water still requires additional treatment to further reduce total dissolved solids to make the mine water potable.     

粉煤灰在废水处理领域的应用研究

简要地介绍了粉煤灰的特性及国内粉煤灰的处理现状,说明了如何对粉煤灰进行改性以及利用粉煤灰处理废水的原理,介绍了目前在废水处理过程中利用粉煤灰的处理方法及一些相关的技术条件。     

Removal of Ions and Acidity from Acid Mine Water Using Transformed Fly Ash

Fly ash obtained from a coal combustion thermal electric power plant was reacted with NaOH at 100 °C for 24 h to synthesize zeolite. Shaker flasks experiments were conducted to assess whether fly ash or fly ash zeolite (FAZ) could be used to treat acidic mine water. The FAZ was used to treat the mine water at doses of 5–60 g/L; the FAZ increased pH from 2.76 to as high as 7.51 and removed most of the Ca and Mg hardness and acidity from the mine water, though it did not affect sulphate concentrations. The cation exchange capacity of the FAZ was regenerated using NaCl. After six regeneration/reuse cycles, the FAZ was less effective but still capable of increasing pH and removing substantial hardness. In contrast, fly ash was not effective in removing hardness or acidity, and instead released ions into the mine water.     

程潮铁矿重金属污染及其环境地球化学研究

程潮铁矿在生产过程中产生了大量的废弃物,其中包括各种废水和固体废弃物。这些废弃物的排放引起了重金属元素的释放、迁移,并对水体、土壤、植被等表生环境造成重金属污染。研究表明:此区水体中超过环境标准的元素为Hg、土壤中为Cu,水体中元素含量变化特征与背景值变化特点相似,土壤中元素含量与背景值相差较大;元素的生物吸收系数因植物的不同而不同,根据其对重金属元素的吸收,蕨类和蒿类植物等可作为本区生态复垦的植被,玉米可作为重金属耐性植物加以种植利用;另外,水稻和油菜中重金属含量较高而且对各种元素均有较大吸收系数,存在较大环境风险。     

矿渣基胶凝材料固化垃圾焚烧飞灰中重金属的研究

以矿渣部分或全部替代水泥，与垃圾焚烧飞灰和脱硫石膏组成胶凝材料，研究随矿渣掺量变化，胶凝材料对垃圾焚烧飞灰重金属的固化效果。结果表明：随着矿渣替代水泥量的增大，净浆试块抗压强度呈现先增大后减小的趋势；当飞灰掺量为20%、矿渣掺量为70%、脱硫石膏掺量为10%时制成的净浆试块，在温度为35 ℃、湿度为95%下养护28 d，试块的抗压强度达到47 MPa，重金属元素Cr、Cd、Cu、Hg、Pb、Zn的浸出浓度均低于饮用水标准；对Pb、Cr的固化效果明显优于纯水泥胶凝体系。XRD和FT-IR检测表明：该矿渣基胶凝材料水化生成的主要产物有钙矾石、C-S-H凝胶和水铝钙石，水化产物对重金属离子有良好的包裹作用。矿渣基胶凝体系比水泥基胶凝材料体系在固化垃圾焚烧飞灰重金属方面优越性明显。     

大型露天煤矿重金属污染评价

大型露天煤矿开采强度大,对周围环境破坏较大,特别是重金属元素由地下深部转至地表,改变了它们迁移的地球化学条件,在地表重新分布,形成了局部地区的严重污染。通过对胜利露天煤矿5号煤层上覆岩层的重金属含量及赋存状态的调查,得到该矿重金属Cd的含量已经超标,是本地区土壤重金属污染的主要因子。     

矿山尾砂土壤重金属污染及形态分析

通过对矿山周边不同层次土壤采样提取,分析土壤中重金属污染程度及形态,结果表明,在上层土壤中重金属的污染扩散情况较为严重,且多以残渣态为主;根据土壤中重金属污染程度及形态,对矿山尾砂土壤重金属污染治理与防范提出了合理建议。