Performance Analysis Of Sewage Treatment Plants In Delhi

IJEP 41(6): 716-720 : Vol. 41 Issue. 6 (June 2021)

Sudhir Kumar and Mahendra Pratap Choudhary*

Rajasthan Technical University, Department of Civil Engineering, Kota – 324 010, Rajasthan, India


Nowadays, water quantity and quality are the major problems especially in urban areas arising due to rapid urbanization and industrialization. Due to the insufficient capacity of sewage treatment plants in Delhi, the discharge of wastewater from domestic and industrial sources is mainly responsible for pollution in the river Yamuna. A study has been carried out to analyze the efficiency of various sewage treatment plants located in Delhi based on different technologies. The sewage treatment plants located at Okhla, Chilla and Akshardham have been chosen for the study which are based on technologies, such as conventional activated sludge process (CASP), sequential batch reactor (SBR) and membrane bioreactor (MBR), respectively. The results have shown that the sewage treatment plants based on SBR and MBR are functioning satisfactorily but the sewage treatment plant based on CASP at Okhla is not working properly, where the biochemical oxygen demand (BOD) of treated wastewater was found to be 62 mg/L which is not within the permissible limit as prescribed by the Central Pollution Control Board of India. Hence, there is a need for continuous monitoring of the sewage treatment plants and also to remove any inefficiency in operation and maintenance as and when it is observed.


Sewage treatment plant, Wastewater quality, Pollution, Biochemical oxygen demand


  1. Gupta, S., et al. 2018. A study on sewage treatment and disposal in Delhi. Int. J. Adv. Res. Innovation. 6(2): 88-91.
  2. Wakode, P. N. and S. U. Sayyad. 2014. Performance evaluation of 25 MLD sewage treatment plant (STP) at Kalyan. American J. Eng. Res., 3(3): 310-316.
  3. Agnihotri, S., et al. 2019. Performance evaluation of sewage treatment plant based on SBR and MBBR technology. Int. J. Technical Innovation Modern Eng. Sci., 5(3): 98-102.
  4. Sharma, R. and P. Agrawal. 2017. A case study on sewage treatment plant (STP) Delawas, Jaipur. Int. J. Eng. Sci. Computing. 7(5): 12437-12442.
  5. Sahu, V. and P. Sohoni. 2014. Water quality analysis of river Yamuna – The Delhi stretch. Int. J. Env. Sci., 4(6): 1177-1189.
  6. NRCD report. 2013. Performance evaluation of STPs funded under NRCD (CUPS/61/2005-06). National River Conservation Plan of Ministry of Environment and Forests, Government of India, Central Pollution Control Board, India.
  7. APHA. 1998. Standard methods for the examination of waters and wastewaters (20th edn). American Public Health Association, Washington DC, USA.
  8. CPCB. 1986. General standards for discharge of environmental pollutants. Part-A: Effluents, environment (protection) rules, schedule – 4. Central Pollution Control Board, New Delhi, India.
  9. IS 10500. 2012. Indian standard: Drinking water specification (2nd edn). Bureau of Indian Standards, New Delhi, India.
  10. WHO. 2008. Guidelines for water quality standards (3rd edn, vol 1). World Health Organization, Geneva.