Performance Assessment of Domestic Wastewater Treatment Plants Operating on Different Technologies 
Sudhir Kumar1, Mahendra Pratap Choudhary2
1Sudhir Kumar*, M. Tech. Department of Civil Engineering, Rajasthan Technical University, Kota, India.
2Dr. Mahendra Pratap Choudhary, Associate Professor, Civil Engineering, Rajasthan Technical University, Kota, India.
Manuscript received on January 12, 2020. | Revised Manuscript received on February 05, 2020. | Manuscript published on February 28, 2020. | PP: 1649-1653 | Volume-9 Issue-3, February 2020 | Retrieval Number: C5454029320/2019©BEIESP | DOI: 10.35940/ijeat.C5454.029320
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: Delhi, the most populated city in the country, is the capital of India. The huge population, urbanization and industrial processes contribute to degradation of water quality which is further aggravated by direct disposal of untreated domestic wastewater into the river Yamuna. In Delhi, the sewerage system is badly affected by improper management of the drainage system and insufficient installation of sewers in undeveloped as well as slum areas of the city which degrade the surface water quality of Yamuna River and create unhygienic conditions for the increasing population. In this study, three sewage treatment plants (STPs) have been selected which are situated at Najafgarh, Delhi Gate and Shahdara based on different technologies like Extended Aeration (EA), Biological Filtration and Oxygenated Reactor (BIOFOR) and Phytorid in order to assess the quality of wastewater before and after treatment and determining the removal efficiencies of various parameters. The study reveals that the performance of Delhi Gate and Shahdara STPs based on BIOFOR and Phytorid technologies are more efficient for the treatment of the municipal wastewater which can be further be safely disposed off into surface water and can be used for non-domestic purposes like irrigation, agriculture, cleaning of parks and streets. The effluent quality of Najafgarh STP based on EA technology is found to be less efficient as compared to the BIOFOR and Phytorid technologies. Hence, it is required to be operated and maintained properly with close supervision so as to achieve effluent quality standards as prescribed by the Indian standards.
Keywords: Sewage treatment plant, Extended Aeration, BIOFOR, Phytorid, Biochemical oxygen demand.