Nature Environment and Pollution Technology

Francis Andrade ¹, H. B. Aravinda ², E. T. Puttaiah ¹

Affiliations
1 Deptt. of Environmental Science, Kuvempu University, Shankeraghatta-577 451, Distt. Shimoga, Karnataka, IN
2 Deptt. of Civil Engineering, Bapuji Institute of Engineering and Technology, Davangere-577 004, Karnataka, IN

Abstract

Mangalore coast is present at the western part of the Western Ghats of the Indian peninsula located at 12°49'N and stretched to about 22 kms. This region is meant for many useful and convenient sources for the development of the country's economy. Because of its scenic beauty, it attracts huge crowd of tourists across the globe. Along with the tourism, this coastal region also receives pollution load from the various industries located nearby. The preliminary study carried out at the coastal region of Mangalore by considering six randomly selected study sites, located at points where river water enters the sea. Various parameters of water analysis in these study sites have revealed differences from one site to the other. The mean values of the estimated characteristics were represented graphically. These values prompt to carry out further research to substantiate using statistical methods.

Keywords

Mangalore Coastal Waters, Physicochemical, Characterisrics, Pollution.

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H. Karibasappa ¹, H. B. Aravinda ¹, S. Manjappa ¹

Affiliations
1 Department of Civil Engineering, Adhiyamaan College of Engineering, Hosur-635 109, T.N., IN

Abstract

The present concern for eutrophication relates to the rapidly increasing quantities of nitrogen and phosphorus which are otherwise present at fairly low concentrations in unmodified natural waters to limit the algal growth and biomass. In the present study an attempt has been made to measure the level of eutrophication in Hosur town lakes. Three lakes namely Chandrakudi lake, Doddan lake and Kelavarapalli dam were selected for the study. The samples were collected and analysed for soluble orthophosphate, chemical oxygen demand, organic nitrogen, free ammonia, inorganic nitrogen, total phosphorus and dissolved oxygen, etc. The onsite study like transparency, fish kill information and impairment of lakes, etc. was also conducted. The level of eutrophication in the lakes was calculated by using Wetzel's scheme. The results revealed that the eutrophication level in all the three lakes is very high, i.e., hypereutrophic to very eutrophic.

Keywords

Eutrophication, Nutrients, Nitrogen, Phosphorus, Hosur Town Lakes.

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