The difference in the Yamuna when it enters Delhi, and the form in which the river exits the city are stark - chemically, visually, and even by smell.
Spanning 22km through the Capital, the Yamuna encounters a major drain approximately every 1.2km, each adding to its contamination. This, along with other smaller sources of pollution, consistently chip away at the water quality as the river traverses the city.
The deterioration starts soon after the river meets the Najafgarh drain - the first and the largest polluting of the city's 18 drains - that ferries much of Delhi's sewage, industrial effluents and other toxic waste into the river.
When the river enters Delhi at Palla, its water meets pollution norms, with acceptable levels of biological oxygen demand (BOD) and dissolved oxygen (DO), no visible froth, and no foul smell. By the time it exits the city, the river's pollutants are as high as 30 times the permissible standards, and around this time of the year, there's a thick iceberg-like block of foam that blankets the surface.
The foam problem
Denne historien er fra November 08, 2024-utgaven av Hindustan Times.
Start din 7-dagers gratis prøveperiode på Magzter GOLD for å få tilgang til tusenvis av utvalgte premiumhistorier og 9000+ magasiner og aviser.
Allerede abonnent ? Logg på
Denne historien er fra November 08, 2024-utgaven av Hindustan Times.
Start din 7-dagers gratis prøveperiode på Magzter GOLD for å få tilgang til tusenvis av utvalgte premiumhistorier og 9000+ magasiner og aviser.
Allerede abonnent? Logg på
'EK POST MILTI TOH BHI KAAM KARNE SE KOI NAHI ROK SAKTA THA'
Ronak Khatri, DUSU's new president, says nothing can deter his spirit to work for the students of his varsity
'It's scary that the air we are breathing is toxic'
Actor Shriya Pilgaonkar, a goodwill ambassador for the All Living Things Environmental Film Festival (ALT EFF), was in for a shock as she returned recently from New Zealand amid the air pollution crisis in the Capital.
Alia faced hatred for not looking South Indian in 2 States, says Arjun
Actor Arjun Kapoor has shared that his 2 States (2014) co-star Alia Bhatt faced a lot of hatred for being cast in the romantic comedy drama.
He introduced me to Indian cinema: Hugo Weaving on Satyajit Ray and his films
British actor Hugo Weaving, best known for portraying Elrond in The Lord of the Rings and Agent Smith in the Matrix franchise, opened up about his admiration for director Satyajit Ray's works and Indian cinema, saying, \"I actually remember seeing his (Ray's) films when I was 16. I absolutely loved them. The Apu Trilogy profoundly moved me, and The Chess Players (Shatranj Ke Khilari), along with several of his other works.\" The Matrix star added, \"He (Ray) truly introduced me to Indian cinema.\"
I GOT TO TRULY LIVE LIFE: KRYSTLE DSOUZA ON HER TIME AWAY FROM SCREEN
Actor Krystle Dsouza opens up about her three-year hiatus, the struggles of waiting for meaningful work and finding joy in the unexpected
Gukesh shows restraint and defensive skills to hold Ding
BENGALURU: After the fireworks of Game 1, it was a slow, manoeuvring 23-move draw by repetition in the second game of the World Chess Championship between Ding Liren and D Gukesh in Singapore on Tuesday.
AR RAHMAN IS JUST LIKE A FATHER TO ME: MOHINI DEY
Taking to social media, bassist Mohini Dey has refuted the \"baseless claims\" about her alleged role in AR Rahman's separation from his wife, Saira Banu
Gukesh shows restraint and defensive skills to hold Ding
After the fireworks of Game 1, it was a slow, manoeuvring 23-move draw by repetition in the second game of the World Chess Championship between Ding Liren and D Gukesh in Singapore on Tuesday.
Spurs goalkeeper played an hour versus City with a fractured ankle
Tottenham goalkeeper Guglielmo Vicario says he played for an hour against Manchester City with a fractured right ankle that has since required surgery.
NADA slaps four-year ban on Bajrang for doping violation
NEW DELHI: The National Anti-Doping Agency on Tuesday suspended Bajrang Punia for four years for his refusal to provide his sample for a dope test on March 10 during selection trials for the national team.