scholarly journals Histopathological changes in the gill architecture of Labeo rohita from the pond adjacent to thermal power station, Koradi, Nagpur, India

2011 ◽  
Vol 3 (2) ◽  
pp. 284-286
Author(s):  
A. S. Deshpande ◽  
S. B. Zade ◽  
S. R. Sitre
Keyword(s):  
Power Plant ◽  
Freshwater Fish ◽  
Thermal Power Plant ◽  
Fish Assemblages ◽  
Labeo Rohita ◽  
Thermal Power ◽  
Chloride Cells ◽  
Thermal Plume ◽  
Histopathological Changes ◽  
Power Plant Effluent

The hazardous effect of water pollution on the histopathology of selected organs of the freshwater fish Labeo rohita was studied with respect to thermal power plant effluent. The purpose of this research paper is to study whether the thermal plume can affect fish assemblages in the waters around the outlet area of the thermal power plant located at Koradi near Nagpur city. Both experimental and control fishes were monitored for a year from March 2010 to Feb. 2011. Histopathology serve as a tool to assess the extent of damage caused to the organism.Gill tissue showed fusion of primary lamellae, congestion of blood vessels and hyperplasia of bronchial plates. The histopathological changes in the gill tissue include epithelial hyperplasia, curling of secondary lamellae and changes in chloride cells. Besides these changes pyknotic nuclei, vacuolization, degradation of epithelial and pillar cells, were noticed, which point out towards deleterious effect of thermal power plant effluent on the freshwater fish L. rohita.

scholarly journals Determination of Thermal Pollution Effect on End Part of Stream

2020 ◽  
Vol 9 (3) ◽  
pp. 3311-3319
Keyword(s):  
Water Quality ◽  
Power Plant ◽  
Thermal Power Plant ◽  
Thermal Power ◽  
Quality Parameters ◽  
Water Quality Parameters ◽  
Low Flow ◽  
Thermal Plume ◽  
Pollutant Source ◽  
Set Up

The present study was conducted to evaluate the environmental impact of thermal effluent sources on the main water quality parameters at the low flow conditions. The low flow causes the flow velocity to be low which causes accumulation of any pollutant source. The study was performed by creating a 2-d model of the last reach of Rosetta branch at winter closure. Delft 3d software is used to create a hydro-dynamic model to simulate the flow pattern within a 5 km of the branch upstream Edfina regulator. Water quality model is coupled afterwards to simulate the water quality parameters. A base case scenario of the current state at the low flow condition is set up and calibrated. Another scenario is performed after adding a thermal pollutant source. Thermal power plant is used as an application of thermal pollutant source. Cooling water is with drawled from an intake and discharged back to the water source with a relatively higher temperature downstream the intake. A case study of Dairut thermal power plant which is planned to be constructed at this area is used. Hydrographic survey is performed to collect essential hydraulic data for the model. Field measurements are performed to collect water quality along the area. A numerical model was set up and the area was simulated. Results showed accumulation of thermal plume. The higher temperatures lowered the dissolved oxygen in the thermal plume area. On the other hand, BOD and NO3 values increased with different rates. Ammonium was positively affected and was lowered.

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