Treatment of alkaline waste from aluminium waste storage site and method for reclamation of that site

2010 ◽  
pp. 397-402
Author(s):  
Z Kowalski ◽  
K Gorazda ◽  
A Sobczak
Keyword(s):  
Storage Site ◽  
Waste Storage ◽  
Alkaline Waste

scholarly journals Protection of groundwater from migration of infiltrates from a chromic waste storage site and methods of treating these infiltrates

Health ◽  
2010 ◽  
Vol 02 (03) ◽  
pp. 177-187
Author(s):  
Zygmunt Kowalski ◽  
Adam Kozak ◽  
Marcin Banach ◽  
Agnieszka Makara
Keyword(s):  
Storage Site ◽  
Waste Storage

Composition of demolition wastes from Chi-Chi earthquake-damaged structures and the properties of their inert materials

2009 ◽  
Vol 46 (4) ◽  
pp. 470-481 ◽  
Author(s):  
Chau-Ping Yang
Keyword(s):  
Coarse Aggregate ◽  
The Other ◽  
Inert Material ◽  
Storage Site ◽  
Demolition Waste ◽  
Natural Soils ◽  
Construction Waste ◽  
Waste Storage ◽  
Urban Construction ◽  
Volumetric Content

The disastrous Chi-Chi earthquake struck Taiwan on 21 September 1999 and resulted in the creation of more than 20 million cubic metres of demolition waste, which was stored temporarily at several sites. To reduce the site clearing costs, the inert materials (concrete, brick, pottery, and fines) in the wastes should be reclaimed and recycled immediately; but most of their properties were not known. Therefore, this study investigates the properties of demolition wastes, including inert materials, coarse portions, and fines obtained from two earthquake demolition waste storage sites (Puli and Tali) and one normal urban construction waste storage site (Taichung). It is found that the volumetric content of inert materials from earthquake demolition waste is about 96%. Such inert material is classified as having an excellent subgrade rating and can be reused as subbase and base soils. The abrasion level of the coarse portions of inert materials from the three sites meets the required level of coarse aggregate according to Standard Taiwan Code CNS-490. On the other hand, the maximum dry unit weights of fines of inert materials from the three sites are greater than 14.7 kN/m3, and their shear strengths are higher than that of the same classification group (SW–SM) of natural soils, so they can be reused as construction soils.

Experimental investigation of the effect of high-pH solutions on the Opalinus Shale and the Hammerschmiede Smectite

Clay Minerals ◽  
2000 ◽  
Vol 35 (3) ◽  
pp. 515-524 ◽  
Author(s):  
H. Taubald ◽  
A. Bauer ◽  
T. Schäfer ◽  
H. Geckeis ◽  
M. Satir ◽  
...  
Keyword(s):  
Nuclear Waste ◽  
Scanning Electron Micrographs ◽  
Storage Site ◽  
X Ray Diffraction ◽  
Nuclear Waste Storage ◽  
X Ray ◽  
Waste Storage ◽  
Precipitation Zone ◽  
Diffraction Peaks ◽  
Scanning Electron

AbstractThe alteration and transformation behaviour of the Tertiary Hammerschmiede Smectite and the Jurassic Opalinus Shale in an alkaline solution was studied in column experiments. The Hammerschmiede Smectite is proposed as potential backfill material and the Opalinus Shale as host rock for the Swiss low-level nuclear waste storage site. Over a period of 18 months, the evolution of permeability, pH and solution concentrations were measured. After the experiment, the columns were cut into pieces to study the mineralogical and the chemical evolution of the clays. X-ray diffraction (XRD) revealed no significant appearance or disappearance of diffraction peaks at the end of the experiments. The scanning electron micrographs of the clays revealed that both clays exhibited a precipitation zone, which extends from 0 to 2 cm below the infiltration surface. Both clays showed significant differences in the evolution of pH and hydraulic conductivity. The solution front crossed the Opalinus Shale column entirely after only 11 weeks and the initial values for K+ and Na+ were conserved in the solution. For both clays, the salt concentrations in the percolating fluids mirror the evolution of pH.

scholarly journals Assessment of Emission of Selected Gaseous Components from Coal Processing Waste Storage Site

2018 ◽  
Vol 10 (3) ◽  
pp. 744 ◽  
Author(s):  
Natalia Howaniec ◽  
Patrycja Kuna-Gwoździewicz ◽  
Adam Smoliński
Keyword(s):  
Storage Site ◽  
Processing Waste ◽  
Coal Processing ◽  
Waste Storage

scholarly journals Scheduling Approach for the Simulation of a Sustainable Resource Supply Chain

Logistics ◽  
2018 ◽  
Vol 2 (3) ◽  
pp. 12
Author(s):  
Henning Strubelt ◽  
Sebastian Trojahn ◽  
Sebastian Lang ◽  
Abdulrahman Nahhas
Keyword(s):  
Simulation Model ◽  
Storage Site ◽  
Limited Capacity ◽  
Logistics System ◽  
Priority Index ◽  
Waste Storage ◽  
General Goal ◽  
Underground Waste Storage ◽  
Performance Results ◽  
Plant Simulation

The general goal of waste management is to conserve resources and avoid negative environmental impacts. This paper deals with the optimization of logistics processes at an underground waste storage site by means of solving scheduling issues and reducing setup times, with the help of a simulation model. Specific to underground waste storage is the fact that it is often only a side business to actual mining. With limited capacity and resources, all legal requirements must be met, while the business should still be profitable. This paper discusses the improvement of a logistical system’s performance using machine scheduling approaches with the support of a plant simulation model. The process sequence is determined by means of a priority index. Genetic algorithms are then applied to improve the priority index to further increase performance. Results of the simulation model show that the performance of the logistics system can be increased by up to 400 percent, ensuring adequate system performance for current as well as future demand without changes to the system’s capacities and resources.

scholarly journals Radiological comparison of a FDNPP waste storage site during and after construction

2018 ◽  
Vol 243 ◽  
pp. 582-590 ◽  
Author(s):  
D.T. Connor ◽  
P.G. Martin ◽  
H. Pullin ◽  
K.R. Hallam ◽  
O.D. Payton ◽  
...  
Keyword(s):  
Storage Site ◽  
Waste Storage

scholarly journals Practical Approach for Assessment of End-State Radiological Criteria for Remediation of Radioactively Contaminated Sites

2019 ◽  
pp. 36-41
Author(s):  
D. Bugai ◽  
J. Gebauer ◽  
A. Sizov ◽  
N. Molitor
Keyword(s):  
Best Practice ◽  
Contaminated Sites ◽  
Contaminated Site ◽  
Storage Site ◽  
Target Dose ◽  
Site Specific ◽  
Radiological Criteria ◽  
Waste Storage ◽  
Wide Range ◽  
Effective Doses

An approach is described for assessment of the end state radiological criteria for remediation of radioactively contaminated sites. The target criteria are set in a form of prospective effective doses for members of the population who are subject to the higher exposures (representative persons). Brief review of international best practice in setting risk based remedial criteria is presented. The site-specific release criteria for activity concentrations in released material (e.g., Bq/g of soil) are derived using tabulated values of radionuclide activity from IAEA Safety Guide RS-G-1.7 (corresponding to the effective dose of 10 μSv/a). These tabulated values are scaled with the relevant target dose criteria for remediation of the specific site. Applicability and limitations (e.g., with regard to volume of released material) of proposed approach are discussed. The procedure for incorporating complimentary site-specific scenarios is described. The article further illustrates the approach by application of the methodology to the specific radioactively contaminated site (i.e., radioactive waste storage site with clean-up wastes of Chernobyl origin situated in Kiev Region). The proposed approach is generally applicable to a wide range of similar problems.

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