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Rebello, Thais Ayres, Robson Zulcão, João Luiz Calmon, and Ricardo Franci Gonçalves. "Comparative life cycle assessment of ornamental stone processing waste recycling, sand, clay and limestone filler." Waste Management & Research: The Journal for a Sustainable Circular Economy 37, no. 2 (January 11, 2019): 186–95. http://dx.doi.org/10.1177/0734242x18819976.
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Owing to the cost of destination and transportation of ornamental stone processing waste, many studies focused on the reuse and recycling of this product. However, there is a scarcity of articles addressing the environmental viability of the recycling of ornamental stone. In this context, this study comprehends a comparative life cycle assessment of ornamental stone processing waste and conventional materials: sand, clay and limestone filler. The modelling software used was SimaPro 8.3.0.0 with Ecoinvent 3.2 database, employing the ReCiPe H/H methodology for impact assessment. The results show that the recycling of ornamental stone processing waste is environmentally preferable, and the artificial drying alternatives, such as flash dryer and rotary dryer, have lower environmental impact than extracting and processing clay through atomisation methods and limestone filler production. The sensitivity analysis indicated that it is possible to transport the ornamental stone processing waste 37 km after processing, so it reaches the same environmental impact as sand extracted by dredging. On the other hand, an increase of 25% in the energy consumption incremented only 7% of the environmental impact owing to the Brazilian energy mix.
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Manap, Norpadzlihatun, and Nikolaos Voulvoulis. "Data analysis for environmental impact of dredging." Journal of Cleaner Production 137 (November 2016): 394–404. http://dx.doi.org/10.1016/j.jclepro.2016.07.109.
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Staniszewska, Marta, Helena Boniecka, and Hanna Cylkowska. "Environmental aspects of dredging technology." Biuletyn Instytutu Morskiego 32, no. 1 (December 30, 2017): 84–94. http://dx.doi.org/10.5604/01.3001.0010.6973.
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This work is an attempt to answer the question of what types of dredgers applied in dredging works at sea are most advantageous in the context of the rule of the most limited possible intervention into the marine environment. Elaborated reviews and depictions of the most popular types of dredgers are presented. An analysis with respect to the impact of the phenomenon of releasing pollutants accumulated in bottom sediments at all stages of the dredging process is also conducted. Its results indicate that application of mechanical or hydraulic suction dredgers is the most advantageous technique in terms of environment protection.
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Manap, Norpadzlihatun, and Nikolaos Voulvoulis. "Environmental Screening Method for Dredging in Contaminated River." Applied Mechanics and Materials 567 (June 2014): 50–55. http://dx.doi.org/10.4028/www.scientific.net/amm.567.50.
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Dredging in a contaminated river has been widely accepted to have an impact on the environment; however environmental risk assessment analysis could be costly, time-consuming and difficult to perform. Therefore, a screening method acting as a preliminary risk assessment analysis to screen potential contaminated areas is necessary. The aim of this study is to demonstrate a new screening method for risk assessment analysis in a scenario where economy, time and simplicity factors had been a concern. The development of this method is based on a variation of standard Ecological Risk Assessment. An analysis will be performed on two elements. Firstly, the level of contaminants in the water, groundwater and air (known as the media) and, secondly the behavior of environmental indicators during monitoring of historical dredging. This analysis is performed in order to establish the degree of contamination in an area that is about to be dredged, in where the publicly accessible contamination level in the media and the historical dredging monitoring data will be utilized. Eight dredged sites in Peninsular Malaysia are selected as the case studies of this research. This research showed that Sungai Perlis has a very high total risk value, which could have a fatal impact on its biodiversity if dredging is performed with negligence at this location. This research could provide an opportunity for Malaysia to increase its efforts to avoid dredging impacts without being constrained on time, cost and simplicity factors.
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Buczyńska, Edyta, and Paweł Buczyński. "Survival under anthropogenic impact: the response of dragonflies (Odonata), beetles (Coleoptera) and caddisflies (Trichoptera) to environmental disturbances in a two-way industrial canal system (central Poland)." PeerJ 6 (January 9, 2019): e6215. http://dx.doi.org/10.7717/peerj.6215.
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Ecological metrics and assemblages of three orders of aquatic insects (Odonata, Coleoptera and Trichoptera—OCT) in an industrial canal system affected by dredging were studied. Five sites (a river as a control site and canals) along the Vistula River in Central Poland were sampled during six sampling periods (2011 and 2013). Canonical correspondence analyses (CCA) was used to assess the influence of environmental variables on the distribution of 54 insect species in the following system of habitats—a river feeding the canals, river-fed inlet canals and outlet canals with cooling waters. Additionally, before and after control impact (BACI) was used to test for the impact of canal dredging in 2011 on the insect response metrics. Non-metric multidimensional scaling analysis differentiated insect assemblages of the three habitats and similarity percentage (SIMPER) indicated the species most responsible for the faunistic dissimilarities. Temperature was found to be a key factor governing the presence of insects in the outlet canals with cooling water. CCAs revealed that electrolytic conductivity (EC) and salinity had the greatest influence on the OCT fauna in the river and the inlet canals, whilst it was the dissolved oxygen and the level of development of aquatic plants that proved most important in the outlet canals. Modified ANOVAs showed that dredging significantly affected the mean species richness and the dominance in the canals. The changes in OCT species composition were highly informative. The comparison between tolerance patterns of the OCT orders against the five parameters (temperature, EC, total dissolved solids (TDS), pH and current) revealed that caddisflies are the most sensitive group, followed by Coleoptera while Odonata proved the most resistant. Dragonflies have the greatest potential to serve as bioindicators of industrially heated waters. The OCT fauna responded specifically to different environmental factors and stressors, it is strongly recommended to track the responses on different levels, not only metrics, but above all, species.
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Magaña, Pedro, Miguel Á. Reyes-Merlo, Ángela Tintoré, Carmen Zarzuelo, and Miguel Ortega-Sánchez. "An Integrated GIS Methodology to Assess the Impact of Engineering Maintenance Activities: A Case Study of Dredging Projects." Journal of Marine Science and Engineering 8, no. 3 (March 10, 2020): 186. http://dx.doi.org/10.3390/jmse8030186.
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Engineering infrastructures require regular maintenance and/or repair activities that have important social, environmental, and economic impacts. Despite their growing importance, few studies have focused on fully integrated analyses. This work presents a general methodological approach to design databases of engineering maintenance activities for their assessment. This methodology was applied to the case of dredging projects in the ports managed by the Andalusian Regional Government (Spain). The resulting database contains 87 fields of information obtained from the analysis of 70 activities performed between 1993 and 2015. This database is free, public, and available to the scientific community, and it was implemented in PostgreSQL using the PostGIS extension for spatial data; therefore, it can be integrated in a GIS. The assessment of deviations from the initial projects and the comparison between locations enhanced our methodology, which represents a valuable tool not only for scientists and managers to improve the decision-making process when planning future strategies, but also to evaluate the environmental impacts.
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Pellegrini, Marco, Arash Aghakhani, Maria Gabriella Gaeta, Renata Archetti, Alessandro Guzzini, and Cesare Saccani. "Effectiveness Assessment of an Innovative Ejector Plant for Port Sediment Management." Journal of Marine Science and Engineering 9, no. 2 (February 12, 2021): 197. http://dx.doi.org/10.3390/jmse9020197.
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The need to remove deposited material from water basins is common and has been shared by many ports and channels since the earliest settlements along coasts and rivers. Dredging, the most widely used method to remove sediment deposits, is a reliable and wide-spread technology. Nevertheless, dredging is only able to restore the desired water depth but without any kind of impact on the causes of sedimentation and so it cannot guarantee navigability over time. Moreover, dredging operations have relevant environmental and economic issues. Therefore, there is a growing market demand for alternatives to sustainable technologies to dredging able to preserve navigability. This paper aims to evaluate the effectiveness of guaranteeing a minimum water depth over time at the port entrance at Marina of Cervia (Italy), wherein the first industrial scale ejector demo plant has been installed and operated from June 2019. The demo plant was designed to continuously remove the sediment that naturally settles in a certain area through the operation of the ejectors, which are submersible jet pumps. This paper focuses on a three-year analysis of bathymetries realized at the port inlet before and after ejector demo plant installation and correlates the bathymetric data with metocean data (waves and sea water level) collected in the same period. In particular, this paper analyses the relation between sea depth and sediment volume variation at the port inlet with ejector demo plant operation regimes. Results show that in the period from January to April 2020, which was also the period of full load operation of the demo plant, the water depth in the area of influence of the ejectors increased by 0.72 mm/day, while in the whole port inlet area a decrease of 0.95 mm/day was observed. Furthermore, in the same period of operation, the ejector demo plant’s impact on volume variation was estimated in a range of 245–750 m3.
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Rosalina, Harnita. "DEVELOPMENT OF ALTERNATIVES TO MITIGATE THE DETERIORATION OF SEGARA ANAKAN LAGOON AS REVEALED BY ANALYTICAL HIERARCHY PROCESS." Journal of the Civil Engineering Forum 2, no. 3 (August 16, 2017): 235. http://dx.doi.org/10.22146/jcef.26587.
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Segara Anakan is a lagoon located in estuary area of Citanduy and Cibeureum rivers. The main problem that exists in the region Segara Anakan is a shrinking area of Segara Anakan lead lagoon function becomes ineffective due to the increased volume of sediment in estuaries Citanduy. Refinement Segara Anakan will impact annual floods that occurred in the area downstream Citanduy. Have far-reaching is the decline in fish production, which makes the source of livelihood for the community residents of Kampung Laut, furthermore, the environmental changes that occurred in the area Segara Anakan have resulted in shrinking coastal fisheries resources and the expansion of land arising from silting. Assessment of the problem conducted by the method of approach of Analytical Hierarchy Process(AHP) to obtain the best alternatives among three alternatives being offered to sustain the function of Segara Anakan Lagoon. These three alternatives include the 1) Dredging the Lagoon and Upstream Watershed Conservation; 2) Dredging the Lagoon and Reclamation Work around Segara Anakan, and 3) Dredging the Lagoon and Citanduy Diversion. Some criteria and sub-criteria are adapted to support the selection of the alternatives and related questionnaires were developed, and the questionnaire filling was carried out through the implementation of Focus Group of Discussion or FGD. The criteria include several aspects of the criteria and sub-criteria are technical (floods, silting), socioeconomic (the tourist area, the local economy), as well as the environment (fisheries/shipping, agriculture and mangrove forests). Results of the analysis applying the AHP method showed the consistent value on the Alternative 3), i.e. the Dredging of the Lagoon and the Upstream Watershed Conservation (38%).
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Szostek, Claire L., Lee G. Murray, Ewen Bell, Gemma Rayner, and Michel J. Kaiser. "Natural vs. fishing disturbance: drivers of community composition on traditional king scallop, Pecten maximus, fishing grounds." ICES Journal of Marine Science 73, suppl_1 (September 7, 2015): i70—i83. http://dx.doi.org/10.1093/icesjms/fsv152.
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Abstract Scallop dredging is considered to be one of the most damaging forms of fishing to benthic habitats, although these effects vary among different habitats. The present study characterizes the biological communities that occur within the spatial limits of the English Channel king scallop dredge fishery in relation to key environmental drivers [mean seabed temperature; seabed temperature range; interannual temperature variation; bed shear stress (BSS); substrate characteristics; and depth] and across a gradient of scallop dredging intensity derived from vessel monitoring system data. Dredge fishing intensity was not correlated with species richness, species diversity, or species composition. However, increasing tidal BSS had a significant negative correlation with species richness and diversity. This outcome indicates that it is not possible to demonstrate that there is an effect of scallop fishing within the current spatial limits of the king scallop dredge fishery. This may be because historical dredge fishing could have already altered the benthic communities within the area of the scallop fishery to those that are resilient to scallop dredging, or that fishing disturbance has no impact over and above natural physical disturbance within the fishery. An analysis of biological and life history traits revealed that there was no relationship between recent fishing intensity, or BSS, and the functional composition of the communities present. However, even the lowest BSS values in the present study could be considered relatively high compared with areas outside the spatial boundaries of the fishery. Two distinct habitat groups were identified, based on the environmental drivers. These two groups were largely characterized by depth: deep (western) and shallow (eastern) sites. Species with traits that increase resilience to physical disturbance were abundant across all sample sites. Management concerning the environmental impacts of the fishery is discussed in terms of the spatial footprint of the fishery and predicted recovery time-scales for the associated benthic communities.
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Roos, A., J. F. M. van Vliet, J. A. van Pagee, T. A. Nauta, and M. B. de Vries. "An Integral Approach to Support Managerial Actions on Micropollutants in the Southern North Sea." Water Science and Technology 24, no. 10 (November 1, 1991): 29–38. http://dx.doi.org/10.2166/wst.1991.0273.
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During the last decades the southern part of the North Sea has been exposed to high inputs of micropollutants from various sources. Within the framework of the project Management Analysis North Sea (MANS), studies have been carried out to quantify the impact of anthropogenic pollution inputs on coastal water quality, sediments and biota. In order to study the effects of different managerial actions an integrated modelling framework has been developed to enable a spatial evaluation. In this regard special attention has been given to:–the reduction of river inputs, as a result: of domestic and industrial waste water treatment–the storage of dredging sludge from the Rhine-Meuse estuary. It is shown by the results of this study that input reductions of heavy metals since 1980 have resulted in a significant reduction of concentrations in Dutch coastal waters. Long-term simulation of accumulation of pollutants in the sediment, however, showed that due to the long time scale the reduction of the seabed can take several decades. Similar conclusions can be drawn for organic micropollutants, although the input reductions seem to be less pronounced. Based on bioaccumulation modelling, the pollution of the sediment proved to be an important source for uptake of micropollutants in the food web. This study also made clear that significant reductions of North Sea pollution can be established if combined actions are taken. Reduction of pollutants from the Rhine-Meuse estuary, together with the storage of polluted dredging sludge from the Rotterdam harbours, will result in a significant reduction of the state of pollution of the coastal waters of the Netherlands.
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Raharjo, Budi. "Effectiveness of Law Enforcement on Mining Crime Without Permission (PETI) in Wonosobo." Jurnal Daulat Hukum 1, no. 2 (June 10, 2018): 531. http://dx.doi.org/10.30659/jdh.v1i2.3327.
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The background of this research is the rampant mining without permission (PETI) due to the mindset of society or mining entrepreneur who is not based on the exploitation of environmental awareness that will have lasting impact on the next generation. This journal aims to analyze the effectiveness of law enforcement on mining crime without permission in Wonosobo. The method used in the form of in-depth case studies, explores and elaborates on PETI mining case. While the documents studied are the Investigation Report of PETI crime suspection in Wonosobo. The analysis is concerned with the investigation of cases of PETI facts in violation of Article 158 of the Mining Act. The results of the research community was not aware of the law related to the licensing of mining, proved the existence of dredging sand in the suspect area, but the mining business is not licensed. The author suggests the socialization of law and public law for the voluntary movement of miners, so a realization that a legal substance in the Mining Act can be used as a means of protecting the public with government and environmental sustainability.Keywords: Effectiveness; Law Enforcement; Mining Crime Without Permission.
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Kurilenko, Vitalii, and Natalia Osmolovskaya. "Heavy metals pollution of Kotlin Island in the Gulf of Finland." Baltica 28, no. 1 (June 25, 2015): 1–10. http://dx.doi.org/10.5200/baltica.2015.28.01.
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The current environmental state of Kotlin Island and coastal areas reflects the negative impact of industry, transport and urban utilities that has lead to increased heavy metal content in soils, in terrestrial and aquatic vegetation and in the water of the Gulf of Finland. Based on the analysis of pollutant metals in roots and shoots of native plants grown on Kotlin Island, species with high metal-accumulating capacity have been identified. Of these, there were dandelion and coltsfoot demonstrating high mobility in heavy metals Zn especially upward transfer. These could therefore be promising as bioindicators and phytoremediators of polluted areas pointing to origins of contamination. The presence of heavy metal contamination in the coastal waters of the gulf and its variability along the coastline is regarded as dependent on multiple sources of pollution associated with Kotlin Island, namely industrial and municipal waste waters, ship and vehicle traffic, aerosol deposits, contamination by dredging activity in a new port as well as the result of metals leaching from the soils of the island (Zn, Cu, Ni). Metal-accumulating coastal plants such as cane can be a source of secondary pollution of the gulf waters during their seasonal decomposition. The data showed significantly elevated concentrations of Ni, Zn and Cd in the hair of children living in the town of Kronstadt located on Kotlin Island that confirms the adequacy of the proposed indicating methodology and shows the unfavorable environmental situation in the region.
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Bartoszek, Lilianna, Małgorzata Miąsik, and Piotr Koszelnik. "Trophic degradation predispositions and intensity in a high-flow, silted reservoir." PeerJ 8 (June 22, 2020): e9374. http://dx.doi.org/10.7717/peerj.9374.
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The objective of the work was to demonstrate the relationship between the natural environmental characteristics of a reservoir and its catchment and severity of trophic degradation. The shallow, highly-silted Rzeszów Reservoir (SE Poland) was the object of study. The impact on degradation of internal supply from accumulated bottom sediments was also assessed, using water and sediment sampled in 2013 and 2014. A high value for trophic state was identified for the reservoir on the basis of TSI indexes, while assessed natural resilience to degradation and analysis of the catchment as a supplier of biogenic and organic matter both indicate high susceptibility to cultural eutrophication. Obtained values for equilibrium phosphate concentrations under anoxic conditions (EPC-0) point to the possibility of a more intensive process of internal supply in phosphorus. However, the presence of sediments poor in organic matter suggest no major threat of ongoing eutrophication. Desludging and/or dredging are likely to entail elimination from the ecosystem of a large part of the pollutants accumulated in sediments, as well as the internal supply of phosphate to the water column. However, as external sources are responsible for the advanced degradation of Rzeszów Reservoir, any attempts at reclamation within the water will fail to yield persistent effects if appropriate protective procedures in the catchment are not implemented.
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Sugandi, Dede. "Model of Conservation on Sagara Anakan Environment." Forum Geografi 27, no. 2 (December 10, 2013): 131. http://dx.doi.org/10.23917/forgeo.v27i2.2372.
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Widespread decline in agricultural land and the impact on production decline caused extensive forest activities to meet the needs of the population. Activities that cause less environmental quality offset environmental balance changes. These changes due to deforestation, erosion, degraded land and natural resource degradation are exploited so that the function of ecological, economic and social life. Damaged ecosystems resulting in erosion, landslides in the watershed affect the sedimentation in Sagara Anakan sea. Silting, resulting in narrowing of fishing activities, tourism, sports, and services decreased crossings. Because of the problem and the purpose of this study proposed and analyzed a few questions: 1) How does the socio-economic impact of farmers in conserving the environment of Sagara Anakan ?, 2) How do people form of conservation and coastal of Sagara Anakan ?, 3) How model of integrated conservation in the watershed and coastal of Sagara Anakan ? and 4) What role do the people in the watershed and coastal on Sagara Anakan conservation ?. Study site covers an area of flow and Ci Ci Tanduy Beureum and Sagara Tillers waters. Activities of the population in the process of land affected when in Sagara tillers. The method used was a survey with a sample divided by the watershed upstream, downstream and coastal tengahm. Using statistical analysis techniques and geography, so that part of the watershed characteristics can be imaged. Shallowing Sagara Anakan, physically was affected by the physical condition of the easily eroded and accelerated by human activities. The activities of farmer on the watershed have done conservation unless doing reforestation, whereas the farmer on the swamp and coastal areas are not doing conservation. Different physical circumstances, the conservation of watersheds and coastal forms differ. Socio-economic condition of farmer affect the conservation. The farmer could not reforestation conservation form, as the socio-economic needs. While in the farmer swamp and coastal conservation is not done, because the physical state was not possible. To conserve of Sagara Anakan, then the shape of coastal conservation by planting trees, not catch fish, marine dredging, not taking out the trash, do not use drugs to win the fish and catch a certain size. While in conservation should be done with different shape and performed in an integrated manner that requires the participation of the population.
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SAVCHUK, L. "Analysis of the state of waterflows of the Syan river sub-basin as an object of the water cadastre." Modern achievements of geodesic science and industry 41, no. I (April 1, 2021): 172–77. http://dx.doi.org/10.33841/1819-1339-1-41-172-177.
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Among the existing state cadastres, an important place belongs to the water, which is the basis of state management of the water fund. According to the Water Code of Ukraine, the water fund includes all water bodies, provides for the systematic determination of reserves and quality of water resources in a particular area.Water quality is affected by a large number of factors, including location, water body category, water intake area, water mirror area, water volume, river network type, terrain parameters and properties, hydrological conditions. No less important is the influence of anthropogenic factors, which is correlated with the degree of development of the territory, land structure, population and settlements, man-made load and so on. The purpose of the work is to analyze the state of watercourses in the Syan river sub-basin and to establish the main factors that affect water quality. The quality of water resources has a great impact on public health, so a careful analysis of the state of natural water sources is one of the important components of the cadastre of water resources. Method. During the research we worked with information provided by the Lviv Hydrometeorological Service, Lviv egional Department of Water Management, research laboratories engaged in monitoring and analysis of water resources of Lviv region for the last ten years, data from the environmental passport of Lviv region for 2020. During processing of results used a combination of methods of system and structural analysis, analytical comparison, mathematical formalization, cartographic materials, which provided the ability to solve problems and achieve the goal and the reliability of conclusions [Sovhira S. V. et al., 2016]. Results. It is established that the water quality in watercourses flowing through the territory that does not carry a man-made load depends mainly on natural factors, namely: territorial location, climatic conditions, relief, hydrogeological and geomorphological conditions, etc. Due to climate change, various natural phenomena and problems with flooding are increasingly occurring, which negatively affect water resources and quality. Floods occur for various reasons and, in recent years, are characteristic of the Syan river sub-basin, especially in mountainous areas. For the territory characterized by high economic development, the water quality of rivers depends: on mining activities; soil pollution; creation and operation of artificial reservoirs; economic activity within the floodplainchannel complexes; dredging and channel-directing works; deforestation and intensive economic activity at watersheds, which is clearly confirmed by the state of water in the Shklo river and its tributaries Gnoyanets, Tereshka, etc. Data on the state of watercourses in the Syan river sub-basin were collected, systematized and analyzed using and adhering to the main provisions of the integrated approach to water resources management according to the basin principle. Scientific novelty and practical significance. It is proposed to use an integrated approach to create water resources management plans based on the basin principle on the example of the Syan river sub-basin. This approach will allow to identify all sources of influence, their nature, relationship and interaction and to fill with official, relevant data geoportal “State Water Cadastre” on the website of the State Water Agency.
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Golik, V. I., V. V. Vernigor, V. B. Kelekhsaev, and Yu Mystrov. "UNDERGROUND DEVELOPMENT OF ORE DEPOSITS WITH CONSERVATION OF THE GROUND SURFACE." Mining science and technology, no. 3 (December 31, 2018): 3–13. http://dx.doi.org/10.17073/2500-0632-2018-3-3-13.
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Introduction. In a market economy of particular importance are indicators of the quality of raw materials. Loss and decontamination of ores can be achieved by controlling stresses and strains using the residual bearing capacity of the fractured rocks with the primary condition of preserving the earth's surface of destruction. Goals and objectives. The purpose of the study is to substantiate the rational parameters of the technology of the geodynamic safety criterion. The goal is achieved by solving a complex of production due to technical problems, ensuring the correctness of the results, the assessment of geomechanical condition before the development of preventive measures of the impact of mining operations on the environment. Methods. Research methods include system and analysis of theory and practice results, experimental research and scientific forecasting. Results. The value of the criterion of optimum processing technology in the form of preservation of the earth's surface of destruction, such as guarantees of contact of the zone of destruction of the massif of mining, the zone of living matter, flora, fauna and Humans. A detailed understanding of the mechanism of interaction of the structural blocks of a discrete gravitational-tectonic-structural field. The mechanism of manifestation of the residual bearing capacity of the destroyed structural rock separations, the limitation of the degree value, the optimization of the mixture strength and the size of the pillars, the creation of geomechanical balanced segments with the minimization of the costs of the earth's surface condition control are specified. The proposed classification of methods of calculation of extent of the flat roof. The given classification of the methods of array management differs from the assessment of the state of the developed space during the work, after the end of the redemption, and not during the cleaning dredging. An example of the earth's surface conservation is given for the development of a flat-falling field, preserving the earth's surface without filling voids. Conclusion. The processes of control of the state of the masses and the earth's surface are their equivalent, which allows monitoring of the development of the field at all stages of the enterprise's existence. The use of geomechanical factors for the organization of mineral raw materials, mining tool for the implementation of resource-saving and environmental protection trends of mining production and reserve to improve the quality of the extracted ores when to ensure the competitiveness of the enterprise.