矿山含铜酸性废水处理研究

针对矿山含铜酸性废水特点,采用石灰中和沉淀法和石灰调pH—铁屑置换—石灰沉淀法分别进行试验,结果表明,石灰调pH—铁屑置换—石灰沉淀法不仅可以使废水经处理后达到排放标准,而且废水中的大部分铜资源得以回收利用,具有较好的经济效益和环境效益。     

含铜铁酸性废水处理硫化氢研究

为了达到以废治废及节约成本的目的,针对硫化沉淀工艺回收酸性废水中的铜不可避免地产生硫化氢气体的问题,进行了含铜铁酸性废水吸收硫化氢气体试验研究.研究结果表明:采用含铜铁酸性废水吸收硫化沉淀系统产生的硫化氢气体,无论在技术上,还是经济上都切实可行;含铜铁酸性废水吸收硫化氢的过程中,Fe3+发挥着主要作用,可有效氧化硫化氢...     

某矿山含铜酸性废水处理工业实践

很多有色金属矿山在开发过程中,会产生大量含铜酸性废水。由于酸性废水含铜浓度差异性较大,采取的处理工艺也会有所不同。针对某矿山含铜酸性废水进行了大量的工业试验研究,结果表明,较高浓度含铜酸性废水可采取硫化法回收铜金属,再经环保中和处理后循环利用,可大量减少中和渣产生量,降低环保处理成本,有显著的经济、环保效益。同时,为了防范极端气候下的环境风险,该矿山还建设了足够处理能力的备用石灰中和处理系统以及应急液碱(片碱)加药系统,以供同类矿山参考、借鉴。     

某矿山含铜酸性废水处理的工业实践

很多有色金属矿山在开发过程中,会产生大量含铜酸性废水。由于酸性废水含铜浓度差异性较大,采取的处理工艺也会有所不同。本文针对某矿山含铜酸性废水进行了大量的工业试验研究,结果表明：较高浓度含铜酸性废水可采取硫化法回收铜金属,再经环保中和处理后循环利用,可大量减少中和渣产生量,降低环保处理成本,有显著的经济、环保效益。同时,为了防范极端气候下的环境风险,该矿山还建设了足够处理能力的备用石灰中和处理系统以及应急液碱（片碱）加药系统,以供同类矿山参考、借鉴。     

矿山酸性废水治理的研究综述

矿山废水成分复杂,危害性大,其中以酸性废水的污染最为严重.本文总结了国内外治理酸性废水的方法与研究现状,详细介绍了中和法、人工湿地和微生物法的治理方法.     

巴西南部的酸性矿山废水处理

N．daSilveira等人在《International Journalof Mineral Processing》2009年93卷第2期发表文章,介绍巴西南部的酸性矿山废水（AMD）的有效处理方法与水的再利用。     

某铀矿山酸性工艺废水处理研究

介绍某铀矿山酸性工艺废水处理研究结果。采用石灰乳中和-加除氟试剂和氯化钡-污渣循环工艺有效地去除酸性铀工艺废水中的放射性核素铀、钍、镭和有害元素氟、锰等,使处理后的铀工艺废水达到了排放标准。该方法操作简便,节约试剂,污渣含水分少,沉降速度快。     

酸性含铜废水处理的试验研究

用鸡蛋壳处理某溶浸实验室酸性含铜废水(ρ(Cu2+)为143.00 mg/L,pH值为1.80～2.00).研究了不同煅烧温度、蛋壳用量和粒度,以及搅拌速度对处理效果的影响.结果表明:在煅烧温度为400 ℃,蛋壳用量为25 g/L,蛋壳粒度为0.25 mm,搅拌速度为240 r/min的条件下,蛋壳可将酸性含铜废水的pH值由1.80～2.00提高到6.86～7.34,ρ(Cu2+)降低到0.09～0.43 mg/L,去除率可达99.70%～99.94%,处理后废水符合GB 8978-1996<污水综合排放标准>规定的一级标准.因此,用鸡蛋壳处理酸性含铜废水,工艺简单、操作方便、处理效果好,达到了"以废治废"的目的,具有一定的应用前景.     

鹤壁矿区奥灰水水害分析和防治对策

奥灰水水害是矿井建设与生产中的自然水害之一。如果防治不到位而发生突水事故,不仅会影响正常生产,还会造成财产损失和人员伤亡,危害十分严重。本文分析了鹤壁矿区奥灰水水害原因,总结了其治理水害的主要经验,并提出了针对性的防治措施。     

矿山酸性废水治理的研究及SAPS技术展望

总结论述了矿山酸性废水(AMD)的形成和治理状况,重点论述了被动处理技术中的SAPS技术及其处理效果,认为SAPS技术是一种对酸性废水治理有发展前途的技术。     

电吸附工艺在矿井水处理中的应用研究

 采用电吸附工艺处理经“混凝-澄清”后的矿井水,进行了工业试验研究。在试验条件下,电吸附工艺能够有效去除矿井水中的无机盐、氯离子、碱度、硬度及部分有机物,产水指标可以满足电厂循环冷却水要求。提出了应用该工艺处理矿井水时需注意的能耗、浓水排放、预处理等问题。     

日本矿山废水的治理

介绍了日本松尾矿山和栅原矿山废水处理场的废水处理概况，并着重介绍了细菌氧化法在重金属废水处理中的应用，同时提出了值得我国废水处理工程借鉴的几点看法。     

Determination of Hydraulic Residence Times in Several UK Mine Water Treatment Systems and their Relationship to Iron Removal

In the UK, the Coal Authority has more than 40 mine water treatment systems, most of which are wetland systems with settlement lagoon pretreatment. The purpose of treatment in wetlands is the oxidation of ferrous to ferric iron and the subsequent hydrolysis and precipitation of ferric hydroxide within the wetland. It is generally accepted (Hedin et al., Passive treatment of coal mine drainage, 1994, p 35; Skousen and Ziemkiewicz, Acid mine drainage control and treatment, 1996, p 362; Younger et al., Mine water: hydrology, pollution, remediation, 2002, p 442) that this process proceeds by a first-order rate law, although most systems are designed based on an areal removal rate (10 g/m²/day) developed by the U.S. Bureau of Mines (Hedin et al., Passive treatment of coal mine drainage, 1994, p 35); this design guideline inherently assumes a constant removal rate. Given the actual kinetics of iron removal in wetlands, it follows that residence time will control iron removal; given the wide range of system geometries and aspects, it is logical to ascertain the actual hydraulic residence time of wetlands and settlement lagoons and determine the effect this has on iron removal. To make a preliminary assessment of this link, hydraulic residence time of two Coal Authority wetlands (Lambley and Whittle) and two Coal Authority settlement lagoons (Acomb East, Acomb West and Whittle) were measured using bromide tracer tests. Water samples for iron analysis and flow measurements were taken during each tracer test. The Lambley wetland performs well in terms of residence time, and, as reeds become established and adsorptive processes increase, its iron removal performance (currently 58% removal) may improve, but the low influent iron concentration appears to be a significant impediment to meeting the original performance target. In contrast, the hydraulic performance of the Whittle wetland system is poor, which appears to be due to accumulation of dead plant material coupled with a high length to width ratio. However, performance in terms of iron removal is good (92% removal), which appears to be due to the higher influent iron concentration, and especially the fact that the iron enters the wetland largely in particulate form. The longer residence time of water within the Acomb lagoons (≈12 h) resulted in far more effective iron removal (72% in the east lagoon and 85% in the west lagoon) than the shorter residence time at Whittle (24% iron removal, ≈5 h residence time). Performance (in terms of iron removal) of the settlement lagoon systems appears to be far more closely related to the hydraulic residence time (albeit this conclusion must be tentative, given that only three systems have been investigated, and the Acomb system receives chemical addition). Based on this study, treatment system sizing using 100 m² lagoon area per 1 L/s flow appears to be a more appropriate basis for design rather than an areal iron removal rate.     

岱庄煤矿井下排水处理工程设计简介

通过对井下排水的水质分析和矿井井下条件的充分考虑 ,采用给水净化工艺处理矿井井下排水 ,达到排放要求 ,既防治了井下水对地面及井下环境的污染 ,又开辟了一个新的水源 ,简要介绍了其主要的工艺流程     

煤矿矿井水处理与资源化

根据煤矿矿井水的水质特点,将煤矿矿井水分为中性矿井水和酸性矿井水,并指出了中性矿井水和酸性矿井水的水质污染特点.提出了中性矿井水采用:调节+混凝沉淀+多介质过滤+精密过滤+膜处理+消毒的联合处理工艺,使处理后的矿井水能够达到生活饮用水卫生标准.介绍了确定工艺中的有关参数的方法和应考虑的因素.为矿井水的污染治理与回用提供了一个经济可行的技术方案.     

基于热管输热的矿井地热危害控制试验研究

我国矿山资源需求增大,矿井开采深度不断加深,井下地热危害日趋严重,影响了矿井安全生产。针对现有热害控制技术存在深层矿井工作面降温效果不明显,无法有效控制井下热害的问题,利用热管的高效传热特性,建立了采用动力型热管的热害控制系统并搭建了试验平台,用以模拟井下热源环境以及系统热量、冷量传递输运过程。结合矿井实际环境,测试分析了动力型分离式热管降温系统换热的影响因素。结果表明:在蒸发器和冷凝器迎风风温36.5℃和18℃、冷凝器风速3 m/s、溶液泵频率20 Hz、充液率51%的条件下,蒸发器的吸热量随着风量的增加而升高;在蒸发器迎风风温42.8℃、风速2 m/s、冷凝器风温18.8℃、风速3 m/s、溶液泵频率20 Hz的条件下,最佳充液率取值区间为51%～60%;蒸发器各参数不变,当冷凝器迎风温度为16.5℃、风速为2.5 m/s、充液率为67%时,换热量随着溶液泵频率的增加先升高后稳定不变;两换热器距离为4～10 m时,温度和风速变化对系统换热效率影响很小。研究结果反映出动力型分离式热管降温系统可有效改善深井工作环境,使井下高温热害得到有效控制。     

自溜高压注浆系统在冬瓜山主井的应用

千米深井工作面注浆因地筒深度大,水压高,井内场地狭小,无论在技术,设备,以及施工作业条件上,都具有相当的难度,本文介绍了在冬瓜山主井突水淹井治理过程中,深井自溜高压注浆系统在井底工作面注浆中的应用。     

Iron Removal by a Passive System Treating Alkaline Coal Mine Drainage

The Marchand passive treatment system was constructed in 2006 for a 6,000 L/min discharge from an abandoned underground bituminous coal mine located in western Pennsylvania, USA. The system consists of six serially connected ponds followed by a large constructed wetland. Treatment performance was monitored between December 2006 and 2007. The system inflow was alkaline with pH 6.2, 337 mg/L CaCO₃ alkalinity, 74 mg/L Fe, 1 mg/L Mn, and <1 mg/L Al. The final discharge averaged pH 7.5, 214 mg/L CaCO₃ alkalinity, and 0.8 mg/L Fe. The settling ponds removed 84% of the Fe at an average rate of 26 g Fe m⁻² day⁻¹. The constructed wetland removed residual Fe at a rate of 4 g Fe m⁻² day⁻¹. Analyses of dissolved and particulate Fe fractions indicated that Fe removal was limited in the ponds by the rate of iron oxidation and in the wetland by the rate of particulate iron settling. The treatment effectiveness of the system did not substantially degrade during cold weather or at high flows. The system cost $1.3 million (2006) or $207 (US) per L/min of average flow. Annual maintenance and sampling costs are projected at $10,000 per year. The 25-year present value cost estimate (4% discount rate) is $1.45 million or $0.018 per 1,000 L of treated flow.