Delhi zoo to introduce new technology to clean ponds housing crocodiles, gharials

The National Zoological Park in Delhi will soon implement 'nano bubble technology' for cleaning and purifying the water to improve aesthetics of the zoo and promote well-being of aquatic animals.

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The nano bubble technology is being used for the first time, with a 15-day trial period planned, zoo director Sanjeet Kumar told PTI. It is an innovative method, and if it performs well during the trial, the zoo will implement it as required, he said. Speaking about the initiative, an official explained that the primary goal is to maintain cleaner water, which is crucial for the health and well-being of aquatic animals.

Currently, there are issues with water quality, including odor and discoloration, which sometimes make it difficult for visitors to spot the animals. With this new technology, we hope to ensure that the water remains clean, clear, and safe for the animals, the official said. The nano bubble technology, currently in its trial phase, employs advanced filtration and recycling methods to remove impurities and prevent algae growth. The technology also minimises water wastage by enabling efficient recycling.

This innovation will help us maintain optimal water conditions, ensuring the animals thrive in a healthy habitat while making the ponds visually appealing for visitors, the official told PTI. There are a total of four water ponds housing species of crocodiles and gharials. One of the ponds is home to two male and one female gharials (Gavialis gangeticus).

Meanwhile, marsh crocodiles (Crocodylus palustris) reside in the other three ponds. Two females and one male reside in one pond, while the other accommodates a pair of the crocodile species. The third pond houses two unidentified crocodiles whose genders are yet to be determined, according to the management team.
The zoo aims to showcase this improvement, as clear water allows visitors to observe aquatic animals like crocodiles and gharials even when they are underwater.
On days when the water is murky, the animals remain out of sight unless they surface or come ashore. Cleaner water will make them visible to visitors even when submerged, providing an enhanced experience, the official explained.

In addition to improving water quality, the zoo has also initiated measures to enhance feeding for crocodiles and gharials by offering live fish. This initiative is not just about aesthetics but also about promoting the well-being of our animals. Cleaner water is vital for their health and ensures a safe environment for them to live in, the official added. Speaking about the current cleaning process, zoo officials stated that the frequency of cleaning depends on the condition of the ponds. Some ponds where algae accumulate quickly are cleaned every seven days, while others are cleaned every 10 days. The officials explained that algae growth and the darkening of the water are factors that determine the cleaning schedule.

The National Zoological Park, popularly known as the Delhi Zoo, is situated on a 176-acre area under the central government's jurisdiction. It was established in 1952.

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