Study on the Quality of Water in Some Streams of Cauvery River

Abstract

The quality of water in four streams of Cauvery River in Mandya District, where many small scale sugar and brewery distilleries are located, was analysed. Sampling was carried out from four streams designated as station 1 (upstream of effluent discharge point), station 2 (effluent discharge point) and station 3 (downstream of effluent discharge) station 4 (fresh water stream) to assess the impact of effluent on the water quality. The river water composition is increasingly dominated by Na and Cl in the downstream region of the river, indicating the influence of airborne salts with oceanic affinities. Significant spatial variation was observed in water level, transparency, turbidity, depth, dissolved oxygen, colour, biochemical oxygen demand, nitrate, nitrite and total hydrocarbon among the physiochemical parameters of the study stations.

The Study Of Physico- Chemical And Bacteriological Parameters Of River Salandi And Assessment Of Water Quality Index From Hadagada Dam To Akhandalmani, Bhadrak, Odisha, India

“…The P H of water body can be changed with the change of season [25,33], as there are several factors which govern it directly or indirectly are changed with the change of season. The P H of surface water increases with the increase of photosynthesis by autotrops as they use dissolved CO 2 and release O 2 to the surface of water and low P H at the bottom of the surface of water is due to the liberation of acids and CO 2 from the decomposition organic maters under low O 2 concentration [10,21,25,28]. The dissolution of CO 2 and Cl 2 in the surface of water forms carbonic acid and hypochlorous acid respectively which fall the P H [40,42].…”

“…The comparatively lower P H in the month of May can be attributed due to low flow of water and decomposition of organic materials at high temperature that releases acids and CO 2 [20,25,35,61,63]. The higher P H in rainy(August) and post-rainy(October) for entire two years of study can be due to high rate of photosynthesis by autotrops as myxophyceae bloom is observed in the river bed, high flow of rain water and flood that dilutes the pollutants [10,20,23,35,42,44,70]. ) and April for the two years of the study may be due to the decomposition of organic materials and other waste materials thrown off by the large number of picnic parties to the river bed [27,44] as because Hadagada is a famous picnic spot and attracts large number picnic parties to hold picnic here from the month of December to February in every year, as reported in daily "Samaj" on 12.12.2016.…”

Water Chemistry of Kolong River, Assam, India and Management Strategies

“…Due to heavy reflux of sewage in TD-7 drainage canal the BOD values were observed 97-305 mg/l at Turkey [23]. [24] observed low level of BOD indicating less pollution status of river Cauvery. The value of BOD in the present study was higher on site II as compared to Site I.…”

Study of Water Quality Status of Sai River in Uttar-Pradesh With Reference to Water Quality Index Assessment

“…Shyamala et al [5] found pollution at the banks of Cauvery River and Kalingarayan canal in and around Erode town, Tamilnadu. The study showed increased in the pollution load due to the movement of fertilizers, agricultural ashes, industrial effluents and anthropogenic wastes at river Cauvery [6]. Tripathi et al [7] found degradation in water quality of River Rapti near Balrampur in Uttar Pradesh.…”