Modelling nitrogen transformations in waters receiving mine effluents

Chlot, Sara; Widerlund, Anders; Siergieiev, Dmytro; Ecke, Frauke; Husson, Eva; Öhlander, Björn

doi:10.1016/j.scitotenv.2011.07.024

Cited by 15 publications

(7 citation statements)

References 45 publications

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“…changes in values, attitudes, and behavior in the society (cf. [10]), of the processes that the participation relates to, e.g. participatory assessments or policy making.…”

Section: Introductionmentioning

confidence: 99%

Openness in participation, assessment, and policy making upon issues of environment and environmental health: a review of literature and recent project results

Pohjola

Tuomisto

2011

Environ Health

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Issues of environment and environmental health involve multiple interests regarding e.g. political, societal, economical, and public concerns represented by different kinds of organizations and individuals. Not surprisingly, stakeholder and public participation has become a major issue in environmental and environmental health policy and assessment. The need for participation has been discussed and reasoned by many, including environmental legislators around the world. In principle, participation is generally considered as desirable and the focus of most scholars and practitioners is on carrying out participation, and making participation more effective. In practice also doubts regarding the effectiveness and importance of participation exist among policy makers, assessors, and public, leading even to undermining participatory practices in policy making and assessment.There are many possible purposes for participation, and different possible models of interaction between assessment and policy. A solid conceptual understanding of the interrelations between participation, assessment, and policy making is necessary in order to design and implement effective participatory practices. In this paper we ask, do current common conceptions of assessment, policy making and participation provide a sufficient framework for achieving effective participation? This question is addresses by reviewing the range of approaches to participation in assessment and policy making upon issues of environment and environmental health and some related insights from recent research projects, INTARESE and BENERIS.Openness, considered e.g. in terms of a) scope of participation, b) access to information, c) scope of contribution, d) timing of openness, and e) impact of contribution, provides a new perspective to the relationships between participation, assessment and policy making. Participation, assessment, and policy making form an inherently intertwined complex with interrelated objectives and outcomes. Based on experiences from implementing openness, we suggest complete openness as the new default, deviation from which should be explicitly argued, in assessment and policy making upon issues of environment and environmental health. Openness does not undermine the existing participatory models and techniques, but provides conceptual means for their more effective application, and opens up avenues for developing new kinds of effective participatory practices that aim for societal development through collaborative creation of knowledge.

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“…changes in values, attitudes, and behavior in the society (cf. [10]), of the processes that the participation relates to, e.g. participatory assessments or policy making.…”

Section: Introductionmentioning

confidence: 99%

Openness in participation, assessment, and policy making upon issues of environment and environmental health: a review of literature and recent project results

Pohjola

Tuomisto

2011

Environ Health

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“…Every subsystem explains the real condition based on the constructed CLD, addressed with several additional variables regarding its purposes in the system. Some additional variables are needed to obtain the relevant or logical units, which are very important to the mathematical equations used (Chlot et al, 2011).…”

Section: Model Structure 1: Cldmentioning

confidence: 99%

Waste Reduction Through Integrated Waste Management Modeling at Mustika Residence (Tangerang)

Johannes¹

2018

JESSD

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In Indonesia, there are classic issues about waste that are highlighted due to the country's critical conditions. Uncontrolled population growth and regional development have led to massive waste production. One popular practice in waste management is located at integrated waste management site (TPST). This practice has been implemented successfully by TPST Mustika Iklhas, a small community operation in Tangerang. Though different from previous operations, its success is achieved by active community participation, far away from government intervention. This study looks at management practices in TPST Mustika Ikhlas. The method used to address real and complex problems is called system dynamics. This method uses life cycle thinking to address the waste management practice in Mustika Residence. Once the model was constructed, a simulation was carried out within 1,080 days. In this study, exponential behaviors were generated in the main variables such as waste, inorganic waste, and compost. However, organic waste exhibited oscillation behavior due to its processing time needed to convert to compost. From the results and discussion, we conclude that integrated waste management in TPST Mustika Ikhlas has been effective in reducing waste through conversion to inorganic waste and compost. Intervention to Business-As-Usual (BAU) should focus on two leverage variables: retribution and TPST cash flow.

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“…As, Cd, Cu, Ni, Pb, Zn) is frequently observed in aerobic passive systems, although it is important to note that this is predominantly attributable to either adsorption and complexation in wetland substrates (Opitz et al, 2021;Sobolewski, 1999) or to the omnipresence of Fe/Al/Mn (oxyhydr)oxides through scavenging, (ad) sorption or co-precipitation (Burrows et al, 2017;Schaider et al, 2014;Zänker et al, 2003). Beyond that, aerobic passive systems may contribute to biotransformation and decomposition of organic and particularly nitrogen compounds that originate from the use of explosives and extraction chemicals (Johnson, 2015) or as coalification by-products (Chlot et al, 2011). Most notably, elevated NH 4 levels in mine waters may be mitigated in aerobic passive systems through nitrification and assimilation by hydrophytes in surface-flow wetlands (Demin et al, 2002;Etteib et al, 2021;Vymazal, 2013).…”

Section: Introductionmentioning

confidence: 99%

Optimising Operational Reliability and Performance in Aerobic Passive Mine Water Treatment: the Multistage Westfield Pilot Plant

Opitz

Bauer²,

Eckert

et al. 2022

Water Air Soil Pollut

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A three-stage pilot system was implemented for passive treatment of circumneutral, ferruginous seepage water at a former opencast lignite mine in southeast Germany. The pilot system consisted of consecutive, increasingly efficient treatment stages with settling ponds for pre-treatment, surface-flow wetlands for polishing and sediment filters for purification. The overall objective of the multistage approach was to demonstrate applicability and operational reliability for successive removal of iron as the primary contaminant broadly following Pareto’s principle in due consideration of the strict site-specific effluent limit of 1 mg/L. Average inflow total iron concentration was 8.4(± 2.4) mg/L, and effluent concentration averaged 0.21(± 0.07) mg/L. The bulk iron load (≈69%) was retained in settling ponds, thus effectively protecting wetlands and sediment filter from overloading. In turn, wetlands and sediment filters displayed similar discrete treatment efficiency (≈73% each) relative to settling ponds and thus proved indispensable to reliably meet regulatory requirements. Moreover, the wetlands were found to additionally stimulate and enhance biogeochemical processes that facilitated effective removal of secondary contaminants such as Mn and NH4. The sediment filters were found to reliably polish particulate and redox-sensitive compounds (Fe, As, Mn, NH4, TSS) whilst concomitantly mitigating natural spatiotemporal fluctuations that inevitably arise in open systems. Both treatment performance and operational reliability of the multistage pilot system were comparable to the conventional treatment plant currently operated on site. Altogether the study fully confirmed suitability of the multistage passive setup as a long-term alternative for seepage water treatment on site and provided new insights into the performance and interrelation of consecutive treatment stages. Most importantly, it was demonstrated that strategically combining increasingly efficient components may be used for optimisation of treatment performance and operational reliability whilst providing an opportunity to minimise land consumption and overall costs.

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Modelling nitrogen transformations in waters receiving mine effluents

Cited by 15 publications

References 45 publications

Openness in participation, assessment, and policy making upon issues of environment and environmental health: a review of literature and recent project results

Openness in participation, assessment, and policy making upon issues of environment and environmental health: a review of literature and recent project results

Waste Reduction Through Integrated Waste Management Modeling at Mustika Residence (Tangerang)

Optimising Operational Reliability and Performance in Aerobic Passive Mine Water Treatment: the Multistage Westfield Pilot Plant

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