Pollution characteristics of surface runoff under different restoration types in manganese tailing wasteland

Wang, Jun; Cheng, Qingyu; Xue, Shengguo; Rajendran, Manikandan; Wu, Chuan; Liao, Jiaxin

doi:10.1007/s11356-018-1338-2

Cited by 35 publications

(12 citation statements)

References 47 publications

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“…However, COD and BOD, which are indicators of oxygen-consuming organic matters, are relatively stable, thus the degradation of organic compounds needs more time. Moreover, studies found that COD was positive correlated with sediment levels, which means that sediment particles could work as carriers of COD contaminants from land to rivers by flush processes across the catchment scale [61,65,66]. Therefore, the human activities in the whole catchment scale played the most important role in organic pollution in water body.…”

Section: Discussionmentioning

confidence: 99%

“…Based on the T-test, discharge values had a significant difference, accordingly, three times higher in wet seasons than that in dry seasons. As organic matters from farmland were transported by sediment particles [61,65,66], the organic contaminants possibly could not be moved to receiving water and therefore were stored in farmland due to lacking enough surface runoff in dry seasons. When wet seasons occurred, increased surface runoff caused soil erosion and sediment transportation.…”

Section: Discussionmentioning

confidence: 99%

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Assessing Anthropogenic Impacts on Chemical and Biochemical Oxygen Demand in Different Spatial Scales with Bayesian Networks

Jin

et al. 2020

Water

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In order to protect the water environment in seriously polluted basins, the impacts of anthropogenic activities (sewage outfalls and land use) on water quality should be assessed. The Bayesian network (BN) provides a convenient way to model these complex processes. In this study, anthropogenic impacts on chemical oxygen demand (COD) and biochemical oxygen demand (BOD) were evaluated in the Huaihe River basin (HRB) considering dry and wet seasons and different spatial scales. The results showed that anthropogenic activities had the most significant impacts on COD and BOD at the catchment scale. In dry seasons, sewage outfalls played an important role in organic pollution. Farmland became the most important source in wet seasons although it had a “sink” process in dry seasons. Intensive human activities in urban made significant contributions to increased COD levels. Grassland had a negative relationship with organic pollution, especially in dry seasons. Therefore, governments should implement strategies to control organic matters transported from urban and farmland regions. Increasing the efficiency of wastewater treatments and the percentage of grassland in the riparian zone could improve water quality. These results can enhance understanding of anthropogenic impacts on water quality and contribute to efficient management for river basins.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Assessing Anthropogenic Impacts on Chemical and Biochemical Oxygen Demand in Different Spatial Scales with Bayesian Networks

Jin

et al. 2020

Water

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“…During the research period of December 2017 and January and February 2018 there was small amount of precipitation in winter time, that is why the ditch have smaller effect of changes of composition of water (the ditch was less influenced by the changes of water composition). The scientists [40] in his study compared the characteristics of rainfall and found out that the pollution degree of Cu and Ni was proportional to the rainfall intensity. Rainfall is showing more effect than other factors such as soil permeability or type of vegetation.…”

Section: Water Pollutionmentioning

confidence: 99%

Level of Pollution on Surrounding Environment from Landfill Aftercare

Bazienė

Tetsman

Albrektienė

2020

IJERPH

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This work examines how the pollution from landfill aftercare effect the surrounding area and water basins. The subject of the study was a closed landfill where waste was disposed of without any accounting and operation of the landfill. During the study, soil, surface water, and sediment samples were taken over a two-year period. The data obtained compared with the maximum allowable concentrations established in the Northern part of Lithuania. The water sampling sites were selected taking into account the direction of the water flow, and the landfill was found to influence the water quality. Within 500 meters before the landfill, heavy metals and metalloid concentrations did not exceed the maximum allowable concentrations (Pb ≤ 20 µg/L; Ni ≤ 40 µg/L; Cr ≤ 100 µg/L; Cu ≤ 100 µg/L and As ≤ 20 µg/L). Soil and water sediment contamination factor and contamination level were determined for each metal and metalloid individually, which showed that as a single chemical element and its compounds none of them pose any danger to the environment. A different situation can be seen when calculating the total level of contamination, taking into account all pollutants classified as very hazardous, Z d > 10. The results showed that monitoring (of surface water, including soil) and investigations, helping to reduce negative environmental impact, should be continued in the closed landfill. mass and accumulate in the environment, everywhere: in soils, surface water and in basin sediment. The greatest danger is the possibility that a metal through the food chain can get in the human body [10]. The accumulation of heavy metal and metalloid in soil severely affects the bioaccumulation processes [11][12][13][14][15]. Local people in different areas cultivate vegetables, grazing cattle a nearby landfill maintenance and are threatened by heavy metal and metalloids exposure. This work examines how pollution from closed landfills affect the closed territories and surface water pools. The heavy metals and metalloids are the pollutants in the environment [16][17][18], which can be found in soil and water and sediments. Five heavy metals and metalloid have found near landfill, which are arsenic (As), cadmium (Cd), copper (Cu), zinc (Zn) and lead (Pb) [19][20][21][22][23]. The same chemical elements, which may pose the greatest environmental and human health hazards have been researched in this study. The main aim of the research is to identify whether there is an environmental impact on surrounding area of landfill aftercare. The research done with three segments of environment: soil, water and sediments heavy metals and metalloid accumulation measurement and analysis.

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“…In Chinese production, the production of 1 tonne of pure Mn requires nearly 8 tonnes of pyrolusite/rhodochrosite ore. As a result, large quantities of tailings are deposited. With rainfall, potentially toxic elements associated with the ore deposits may be released from the tailings, so surface runoff is a major pollution source for local rivers and groundwater [25,26].…”

Section: Sources Of Contamination From Mineral Processingmentioning

confidence: 99%

Removal of Manganese(II) from Acid Mine Wastewater: A Review of the Challenges and Opportunities with Special Emphasis on Mn-Oxidizing Bacteria and Microalgae

et al. 2019

Water

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Many global mining activities release large amounts of acidic mine drainage with high levels of manganese (Mn) having potentially detrimental effects on the environment. This review provides a comprehensive assessment of the main implications and challenges of Mn(II) removal from mine drainage. We first present the sources of contamination from mineral processing, as well as the adverse effects of Mn on mining ecosystems. Then the comparison of several techniques to remove Mn(II) from wastewater, as well as an assessment of the challenges associated with precipitation, adsorption, and oxidation/filtration are provided. We also critically analyze remediation options with special emphasis on Mn-oxidizing bacteria (MnOB) and microalgae. Recent literature demonstrates that MnOB can efficiently oxidize dissolved Mn(II) to Mn(III, IV) through enzymatic catalysis. Microalgae can also accelerate Mn(II) oxidation through indirect oxidation by increasing solution pH and dissolved oxygen production during its growth. Microbial oxidation and the removal of Mn(II) have been effective in treating artificial wastewater and groundwater under neutral conditions with adequate oxygen. Compared to physicochemical techniques, the bioremediation of manganese mine drainage without the addition of chemical reagents is relatively inexpensive. However, wastewater from manganese mines is acidic and has low-levels of dissolved oxygen, which inhibit the oxidizing ability of MnOB. We propose an alternative treatment for manganese mine drainage that focuses on the synergistic interactions of Mn in wastewater with co-immobilized MnOB/microalgae.

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Pollution characteristics of surface runoff under different restoration types in manganese tailing wasteland

Cited by 35 publications

References 47 publications

Assessing Anthropogenic Impacts on Chemical and Biochemical Oxygen Demand in Different Spatial Scales with Bayesian Networks

Assessing Anthropogenic Impacts on Chemical and Biochemical Oxygen Demand in Different Spatial Scales with Bayesian Networks

Level of Pollution on Surrounding Environment from Landfill Aftercare

Removal of Manganese(II) from Acid Mine Wastewater: A Review of the Challenges and Opportunities with Special Emphasis on Mn-Oxidizing Bacteria and Microalgae

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