Migration of Soluble ASH Components from a Tip to Groundwater

1988 ◽  
Vol 20 (3) ◽  
pp. 237-244 ◽  
Author(s):  
E. S. Kempa ◽  
A. Jȩdrczak

An area used for storage of ash generated in a thermal power plant is located in an old gravel mine. The effluent from the ash pond is reclaimed and reused, without any treatment, for hydraulic transport of new ash. The pond has been used for about 12 years, and specific tests and groundwater analyses have been undertaken since 1975. The concentration of inorganic constituents in the groundwater, measured at different distances from the pond, show that:–the concentration of inorganic substances decreases with distance from the pollution source;–an increase in the concentration of pollutants is found at the same points in consecutive years. These patterns allow us to evaluate the influence of the ash pond on the soil environment and groundwater at the present time and in the future. With the help of the research mentioned and this specific case study, we are able to verify the model of migration of contaminants in soil.

2013 ◽  
Vol 8 (3-4) ◽  
pp. 342-349
Author(s):  
L. Andjelic ◽  
M. Pavlovic ◽  
B. Babovic

The thermal power plant ‘Morava’, with a productive force of 125 MW, is located on the right bank of the River Velika Morava, near the city of Svilajnac, Serbia. This power plant uses coal for production. Ash and slag from the coal are burned and go to a landfill by hydraulic transport. The ratio of the liquid/solid mixture is 10:1. Towards the reduction of water quantity taken from the Velika Morava river for hydraulic transport, it's provided to build a water recirculation system for overflow and drainage water from landfill to power plant. In this paper, the results of the hydraulic study of water balance in landfill is shown. The goal of this study is to assess the water quantity in landfill, which can then be reused for hydraulic transport. For dimensioning of drainage system and overflow building on landfill, it was necessary to perform detailed analysis of rainfall and filtration throw landfill. With results of water quantity in drainage system, and overflow water, all parts of the recirculation system of water, from landfill to power plant, was performed. Also, in this paper are the data of hydraulic transport of mixture of water and ash/slag.


2012 ◽  
Vol 232 ◽  
pp. 609-613
Author(s):  
Ali Baghernejad ◽  
Mahmood Yaghoubi

In the present study, a specific and simple second law based exergoeconomic model with instant access to the production costs is introduced. The model is generalized for a case study of Shiraz solar thermal power plant with parabolic collectors for nominal power supply of 500 kW. Its applications include the evaluation of utility costs such as products or supplies of production plant, the energy costs between process operations of an energy converter such as production of an industry. Also attempt is made to minimize objective function including investment cost of the equipments and cost of exergy destruction for finding optimum operating condition for such plant.


2019 ◽  
Vol 25 (2) ◽  
pp. 44-53
Author(s):  
A. Talovskaya ◽  
◽  
E. Yazikov ◽  
E. Filimonenko ◽  
◽  
...  

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