Air pollution-related issues within the river abound throughout summer season after closure of regulators
Frequent cases of change of color and odour and fish kill within the Eloor-Edayar stretch of the Periyar can’t be addressed except the Irrigation Division ensures minimal stream within the river, the State Air pollution Management Board (PCB) has stated.
Main pollution-related issues within the river are famous throughout the summer season season after the closure of Pathalam, Manjummal and Purapallikkavu regulators. They embody change of color of water to black upstream of the regulators, odour, and fish kill owing to decrease dissolved oxygen ranges. The Irrigation Division has to make sure minimal stream to keep away from stagnation of the river, identified a report submitted by the board earlier than the Southern Bench of the Nationwide Inexperienced Tribunal (NGT) on June 10.
The PCB maintained that the principle sources of air pollution within the Edamula stream of the river have been the leachate stream from the Kalamassery municipal market and the stable waste dumping yard at North Kalamassery. Inspections revealed that top natural load from wetlands close to the Naval Armament Depot at Kalamassery reached the river by way of Thoombungal and Edappally canals.
The principle causes for fish kill on the Manjummal bund and Edamula stream are oxygen depletion and stagnation as a result of closure of shutter and accumulation of natural load. The pumping stations of all industries and establishments within the area are situated alongside the Edamula stream. The restriction of environmental stream and consumption of excessive quantity of water for industrial, business and home functions end in drop of water degree, stated the report.
On the air pollution of the Edayattuchal paddy fields in Edayar, the take a look at outcomes of water samples collected from the realm confirmed discharge of untreated effluents into the canal. The PCB has requested the Irrigation Division to make the hid drain connecting the Edayattuchal paddy fields and the Periyar accessible for conducting an in depth inspection.