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矿山酸性废水治理技术及其发展趋势 总被引:8,自引:0,他引:8
矿山酸性废水在很多国家和地区都造成了严重的环境污染。本文分析矿山酸性废水的成因、特点及危害,并总结了中和法、硫化法和微生物法等经济、实用的酸性矿山废水处理技术现状,并进一步阐述了酸性矿山废水治理技术的发展趋势。 相似文献
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沉淀浮选法处理矿山含重金属废水技术初探 总被引:6,自引:1,他引:6
本文介绍了一种新的废水处理技术-沉淀浮选法处理矿山含重金属废水的性能,并对其净化机理作了探讨,还将其与传统的化学沉淀净化法作了比较,为矿山废水的治理及综合利用指出了一条切实可行的新途径。 相似文献
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某金铜矿山含铜酸性废水处理研究 总被引:1,自引:0,他引:1
采用石灰调pH—铁屑置换—石灰沉淀处理工艺对废水进行试验,结果表明,采用该工艺处理含铜酸性矿山废水,不仅能使处理后的水满足排放标准,同时还能回收废水中的铜。 相似文献
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本文阐述了运用地球化学防治矿山环境污染的基本原理和一些应用实例,介绍了矿山环境污染和地球化学的基本联系;阐述了地球化学勘查方法和对尾矿、废石以及矿山酸性废水的治理的应用;探讨了美国在矿床的地球化学背景和基准值、矿床地质—环境模型应用方面的先进经验,并针对国情提出了一些其它防治矿山环境污染的地球化学方法。 相似文献
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厌氧生物处理技术在抗生素废水处理中的应用 总被引:1,自引:0,他引:1
抗生素废水是一类成分复杂、硫酸盐浓度高、含有多种抑制性物质的高浓度难降解有机废水,主要来源于抗生素生产废水、洗涤废水和冷却水等。分析了抗生素废水的来源和水质特征,介绍了国内外抗生素废水治理的各种厌氧生物处理技术方法及其应用,最后对厌氧生物法应用于抗生素废水处理的前景进行了展望。 相似文献
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James E. Crews 《Journal of the American Water Resources Association》1973,9(3):567-576
ABSTRACT Twenty-seven watersheds in the Susquehanna River Basin are severely degraded by acid mine drainage pollution. Approximately 620 miles of significant tributaries as well as 230 miles of principal rivers are either sterile or intermittently degraded by acid slugs. As a result of the acid discharges, many uses of the streams, such as water supply and recreation, are precluded. In the past, acid mine drainage abatement programs did not look beyond the immediate problem area. No considerations were given to the blending effect of natural alkalinity in other streams. Since the abatement of acid mine drainage pollution is extremely costly, a method of minimizing these costs was needed. The systematic, cost-effectiveness approach, discussed in this paper presents such a method. This system allows the water resources planners to control the allocation of funds for maximizing the abatement of acid mine drainage. 相似文献
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Michael Koryak Linda J. Stafford Rosemary J. Reilly 《Journal of the American Water Resources Association》2004,40(3):677-689
ABSTRACT: For more than 30 years, a program of continuous monitoring of pH, acidity, alkalinity, and other parameters has been maintained on a network of large streams degraded by acid mine drainage in the northern Appalachian high sulfur coal region. Continuous records since 1952 are available at a number of stations, and at several stations, acidity records date back to 1930. Comparable analysis techniques were maintained over the period of record, assuring the long term continuity of the database. This monitoring program has captured integrated long term trends within large and complex watersheds with numerous and varied types of mine discharges. The focus of this paper is a historical trend analysis of lightly to severely acid degraded major tributaries of the Allegheny River. Over the past three decades, all of the Allegheny River drainage basin stations have demonstrated steady and substantial declines in acidity and associated increases in pH and alkalinity. The average recorded decline in total acidity at four stations monitored since the 1950s was 94 percent. Since the 1970s, acidity declined by an average of 63 percent at 10 stations. Oxidative exhaustion of pyritic minerals exposed by mining is proposed as a major factor influencing these trends. 相似文献
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Long-term evaluation of coal fly ash and mine tailings co-placement: A site-specific study 总被引:2,自引:0,他引:2
Muluken B. Yeheyis Julie Q. Shang Ernest K. Yanful 《Journal of environmental management》2009,91(1):237-244
This study presents the results of a laboratory investigation conducted to evaluate the efficiency of coal fly ash to control the formation of acid mine drainage (AMD) from mine waste. Site-specific materials, coal fly ash from Atikokan Thermal Generating Station and mine tailings from Musselwhite mine, were mixed at different proportions for the investigation of the drainage chemistry and the optimal mix using static testing (acid–base accounting) and kinetic (column) testing. The acid–base accounting (ABA) results indicated that the fly ash possessed strong alkaline (neutralization) potential (NP) and could be used in the management of reactive mine tailings, thus ensuring prevention of AMD in the long-term. Column tests conducted in the laboratory to further investigate long-term performance of fly ash in the neutralization and prevention of acid mine drainage from tailings similarly showed that mixing fly ash with mine tailings reduces dissolution of many heavy metals from tailings by providing alkalinity to the system. It was found that a fly ash to tailings mass ratio equal to or greater than 15% can effectively prevent AMD generation from Musselwhite mine tailings in the co-placement approach. 相似文献
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Lamminen M Wood J Walker H Chin YP He Y Traina SJ 《Journal of environmental quality》2001,30(4):1371-1381
In this paper, a field study was carried out to examine the effect of flue gas desulfurization (FGD) by-product on water quality at an underground coal mine in central-eastern Ohio. Flue gas desulfurizalion by-product was injected into the down-dip portions of the Robert-Dawson mine in an attempt to seal major seeps exiting the mine and to coat exposed pyritic surfaces. Immediately following grout injection, significant increases in acidity, iron, aluminum, sulfur, and calcium were observed at most surface and ground water locations near where grouting was carried out. Following this initial flush of elements, concentrations of most constituents have decreased to near pre-grouting levels. Data from the site and geochemical modeling suggest that an increase in water level or rerouting of drainage flow resulted in the dissolution of iron and aluminum sulfate salts and ferrihydrite. Dissolution of the FGD grout material resulted in increases in calcium and sulfate concentrations in the drainage waters. Water within the mine voids was saturated with respect to calcium sulfate and gypsum immediately following grout injection. Based on an analysis of core samples obtained from the site, acid mine drainage (AMD) was in contact with at least some portions of the grout and this resulted in grout weathering. Subsequent transport of calcium and sulfate to the underclay, perhaps by fracture flow, has resulted in the deposition of gypsum and calcium sulfate solids. 相似文献
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对于地下开采的有水矿山,矿床疏干需要排放和消耗大量的地下水资源。本文介绍了玉泉岭铁矿在矿床疏干过程中,合理利用和保护水资源的主要措施和方法。 相似文献
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赵各庄矿井排水主要为巷道涌水及奥灰水疏水降压排水,排水量大;巷道涌水悬浮物、矿化度均较高,Cd、Pb含量超标,奥灰水疏水降压排水水质良好。针对矿井排水水量、水质特征,给出了矿井排水处理方式及利用规划,可使矿井水得到综合利用,取得良好的水资源化效益。 相似文献
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Biological mine drainage treatment 总被引:1,自引:0,他引:1
Drainage from sulphur mines contains a high concentration of ferrous iron and it is strongly acidic. The mechanism of acid mine drainage formation was briefly explained. As a case study, successful measures taken at the abandoned Matsuo mine, Iwate Prefecture, Japan, for preventing the pollution in receiving rivers was presented in this paper. The measures consisted of the construction works against pollution sources and the construction of a drainage treatment plant in which Thiobacillus ferrooxidans oxidizes ferrous iron under a low pH condition, and produced ferric iron is removed by sedimentation. Then, a laboratory-scale fluidized bed reactor using anion exchange resin as attaching material for the bacteria was examined in order to improve the efficiency of biological oxidation of ferrous iron. More than 90% of oxidation had been maintained for 2 months at 1 h of HRT, which suggests that the size of the oxidation tank could be reduced. 相似文献