Sewage Treatment Plants: Building capacity by AAP Delhi Govt

Last updated: 17 Aug 2024

Delhi Govt had set plans to increase the STP capacity to[1]
-- 814 MGD by December 2023 => June 2024(missed again)[2]
-- 922 MGD by December, 2024
-- up to 964.5 MGD by March 2025 (100% sewage treatment)

Okhla STP will be one of the biggest sewage treatment plant in Asia[3]

2024-25 Budget: Water and sewerage, top priorities for the AAP govt got Rs 7,195 crore, up from Rs 6,342 crore in the last fiscal[4]

Bureaucratic hurdles after BJP's Delhi Service control led to[4:1]

-- Artificial fund crunch by bureaucracy led to MISSED December 2023 deadline[5]
-- SC intervention forced to release funds Rs 760 cr & 1,927 crore to DJB in 1st week of April 2024[6]
-- Lands allocated for STPs have been taken back by the DDA(under Central Govt)[7]

The sewage generation ~792 MGD[2:1] and treatment is around 566.9 MGD only as of Aug 2024[7:1]
-- Rest flowing untreated into the Yamuna river

List of STPs[8]

3 STPs in Delhi are among the Top 5 largest STP in India[9]
-- Okhla STP
-- Coronation Pillar STP
-- Kondli STP

Aug 2024: All functional STP of DJB in Delhi with Total STP capacity 667 MGD[7:2]
-- only 84.9% capacity utilisation i.e. 566.9 MGD as actual treatment

No STP Name CAPACITY
1 Okhla 140 MGD
2 Kondli 65 MGD
3 Rithala 40 MGD
4 Keshopur 72 MGD
5 Sen Nursing Home 2.20 MGD
6 Coronation Pillar 90 MGD
7 Vasant Kunj 5 MGD
8 Ghitorni 5 MGD
9 Yamuna Vihar 45 MGD
10 Pappankalan 40 MGD
11 Narela 10 MGD
12 Najafgarh 5 MGD
13 Delhi Gate 17.2 MGD
14 Nilothi 60 MGD
15 Rohini 15 MGD
16 Mehrauli 5 MGD
17 CWG Village 1 MGD
18 Molarband 0.66 MGD
19 Kapashera 12 MGD
20 Chilla 9 MGD
TOTAL 667 MGD[7:3]

New Decentralised STPs[1:1]

Construction of 40 New Decentralised STPs (DSTPs) with total capacity of 92 MGD

Locations

  • 26 DSTPs with total capacity of 60 MGD at various locations
  • 14 DSTPs with total capacity of 32 MGD in Najafgarh Drainage Zone

Timeline

  • 29 DSTPs of total capacity of 57.57 MGD by December, 2024
  • 11 DSTPs of total capacity of 34.43 MGD (12 months after allocation of land)

Reuse of processed water

Major challenges ahead

  • DJB has been facing a major financial crunch because bureaucrats of the finance department stopped the flow of funds to execute project[4:2]
  • Delhi Jal Board's estimates, the capital will be generating 925 MGD of sewage (80 per cent of 1,156 MGD water supply) by 2025 [5:1]
  • Out of the 28 approved industrial areas, 17 are connected to 13 CETPs and there are 11 not connected with CETPs [10]
  • Work to trap and process sewage is in progress in 255 out of 683 JJCs [10:1]

REFERENCES

  1. https://delhiplanning.delhi.gov.in/sites/default/files/Planning/chapter_8.pdf ↩︎ ↩︎

  2. https://www.cnbctv18.com/india/delhi-govt-mulls-penalising-sewage-treatment-plant-engineers-for-pollution-in-yamuna-19444195.htm ↩︎ ↩︎

  3. https://www.cnbctv18.com/india/for-a-clean-yamuna-delhis-biggest-sewage-treatment-plant-to-begin-trial-run-around-diwali-18137441.htm ↩︎

  4. https://timesofindia.indiatimes.com/city/delhi/delhi-budget-2024-25-allocation-flow-boost-for-water-and-sewage/articleshow/108219739.cms ↩︎ ↩︎ ↩︎

  5. https://www.deccanherald.com/india/delhi/delhi-missing-2023-deadline-to-treat-all-sewage-makes-2025-yamuna-cleaning-goal-challenging-2857323 ↩︎ ↩︎

  6. https://www.newindianexpress.com/cities/delhi/2024/Apr/06/djb-row-sc-tells-finance-secy-to-release-funds-makes-agency-party-to-govts-plea ↩︎

  7. https://www.downtoearth.org.in/waste/yamuna-continues-to-receive-sewage-as-8-stps-remain-dysfunctional-delhi-jal-board ↩︎ ↩︎ ↩︎ ↩︎

  8. https://delhiplanning.delhi.gov.in/sites/default/files/Planning/chapter_13.pdf ↩︎ ↩︎

  9. https://www.iamrenew.com/sustainability/top-5-sewage-treatment-plants-stps-in-india-in-terms-of-capacity/ ↩︎

  10. https://ddc.delhi.gov.in/sites/default/files/multimedia-assets/outcome_budget_2022-23.pdf ↩︎ ↩︎