Photographs of Wetlands

1. Neela Hauz Biodiversity Park. Entrance from Aruna Asaf Ali Road
Neela Hauz Biodiversity Park. Entrance from Aruna Asaf Ali Road. (Near Sanjay Van)
2. A view of Neela Hauz Lake located within the Biodiversity Park
A view of Neela Hauz Lake located within the Biodiversity Park
3. Neela Hauz Lake with vegetation on the embankment
Neela Hauz Lake with vegetation on the embankment. (Over 15000 saplings of native trees species were planted during the restoration)
4. A view of the restored Neela Hauz lake with clean water
A view of the restored Neela Hauz lake with clean water
5. A view of the oxidation pond I showing Alternanthera
A view of the oxidation pond I showing Alternanthera
6. A view of Oxidation Pond showing the screen sieve which prevents sludge entering the Constructed Wetland System
A view of Oxidation Pond showing the screen / sieve which prevents sludge entering the Constructed Wetland System
7. Gravity channel showing boulders set up as natural physical filters
Gravity channel showing boulders set up as natural physical filters
8. Another photo of the gravity channel showing how boulders act as physical filters
Another photo of the gravity channel showing how boulders act as physical filters
9. One of the treatment tanks containing stones, showing overflow of sewage water
One of the treatment tanks containing stones, showing overflow of sewage water
10. Water over flowing from physical treatment tank flowing into the next treatment tank
Water over flowing from physical treatment tank flowing into the next treatment tank. The foam is due to detergents from domestic waste water mixed with sewage
11. Physical treatment tank showing the use of river bed pebbles acting as filters
Physical treatment tank showing the use of river bed pebbles acting as filters
12. A picture of Typha, Phragmites used in the bioremediation of sewage water
A picture of Typha, Phragmites used in the bioremediation of sewage water
13. Phragmites growing inside the wetland
Phragmites growing inside the wetland
14. A close-up of Ipomoea aquatica, another aquatic species used in bioremediation of sewage
A close-up of Ipomoea aquatica – another aquatic species used in bioremediation of sewage
15. Ipomoea aquatica and Alternanthera used to purify the water
Ipomoea aquatica and Alternanthera used to purify the water
16. Sewage water with foam from phosphates (detergents)
Sewage water with foam from phosphates (detergents) still evident after passing through dense growth of Alternanthera and Ipomoea
17. A Scented Garden located by the side of the natural filtration tanks
A Scented Garden located by the side of the natural filtration tanks
18. A Butterfly Corner located close to the treatment tanks
A Butterfly Corner located close to the treatment tanks
19. A view of the restored Neela Hauz Lake with clean water having less than 4 mgl BOD, 1 mgl COD and 8.5 mgl
A view of the restored Neela Hauz Lake with clean water having less than 4 mg/l BOD, 1 mg/l COD and 8.5 mg/l DO. This is considered to be clean water – almost of bathing standard and unavailable in most of the river
20. Clean water flowing from the constructed wetland through a small cascade
Clean water flowing from the constructed wetland through a small cascade

Courtesy:   Photographs by Monitoring Committee for River Yamuna (Visit to Neela Hauz on 4/7/2019)

Courtesy:   DDA