A Possible Solution for the New Delhi Air Pollution Problem
Posted on 10 Nov 2026; 10:00 PM IST. Last Updated 10 Nov 2026; 10:00 PM IST.Summary: This article provides a possible solution for the New Delhi Air pollution problem.
New Delhi is a land locked city, and is far away from oceans. Although river Yamuna flows through New Delhi, for about 50 km, its impact on the air currents in New Delhi is minimal or insignificant, and extends only to about 3km. Much to the dismay, the pollution of river Yamuna adds its own dimension, to air pollution problem of New Delhi.
In winter, when the land gets cold, the cold air at the surface of the land, does not raise up, and remains stagnant. In the absence of air currents like sea breezes, or cyclones, dense air pollution like vehicle exhaust (even though a little hotter), may not raise very high, and may remain stagnant, just a little over the head. The bulk of the vehicle pollution is Carbon monoxide (CO), which is only slightly lighter than air, and does not raise very high, but mixes freely with air.
The rest of the article attempts to provide a solution for the Air pollution problem of New Delhi.
The Solution
A detailed description of the solution is presented below.
The Main or Central Idea
The main or central idea rests on the proposition of transferring the polluted air to a place near the sea. The closest sea shore from New Delhi is about 1220 km away, and is located at Gandhinagar, Gujarat, or Kandla, Gujarat.
The Collector
The first component of the design is called “collector”, and its purpose is to collect the polluted air.
The collector is a long pipe, and holds connections to smaller pipes called feeders. The feeders and the collector are initially set at a very low pressure, which is less than 1 atmosphere.
The collector is a pretty long pipeline, and goes all the way from New Delhi to Gujarat. The collector is segmented to about a 1km in length, which implies that there would be 1200 segments to cover the full 1200 km. It could be made a little shorter, with more segments.
Each segment of the collector is an independent cell or component by itself, and has the ability to connect to the cell in front of it. If left to right notation is used, then each cell (or the collector segment) connects to the cell on the right, as well as the cell on the left. The Air pollution collected by the cell travels only in one direction i.e left to right, across the connected cells.
Thus far, the arrangement is just like garden play in childhood, where a kid could connect one plastic pipe to another, and switch on the tap, and be delighted, when water comes out of the end.
The Collection Strategy
The collection strategy attempts to catch Air Pollution free of cost, but it comes with a constraint, that the entire pipeline should be at the same elevation (or could descend), but cannot ascend anywhere, since there is no internal pumping to transport the air pollution.
Each feeder has vents controlled by valves, which opens one-way (from outside to inside), when the atmospheric pressure is greater than the pressure inside the feeder. Initially the valves are disengaged by a control switch.
When the pressure in the feeder increases, the valves of the vents will reach their tipping point, and will shut themselves out.
At this tipping point, a valve connecting the feeder to the collector cell, is opened. Since the collector cell is initially set at a lower pressure, it fills out rapidly, deflating the feeder.
This process continues, until the pressure inside the collector cell reaches 1 atmosphere or a bit lower.
When the pressure in the collector cell builds up to about 1 atmosphere, the connection on the right is opened, so that the cell could push the gas forward. The cell on the right, might be engaged in a similar activity, so the process may have to wait, until the adjacent cell on the right is empty (or has reached a state of low pressure).
Technically, the capacity of the feeders, connected to a collector cell, should be half of the full capacity of the collector cell. When a collector cell on the left opens into a cell, their combined pressure would be (1 + 0.5) or 1.5, which evens out at 0.75 across both the cells.
The polluted air collected by the cells, moves forward, cell by cell, until it reaches the last batch of cells at the destination (Gujarat). The last batch of the cells, must be ideally located on a hilltop, near the sea, because the exhaust is heavier than air, and could descend or settle at the floor.
The Emitter
The last batch of cells are called emitters and have an electrical fan to flush out the exhaust. The emitters induce a partial vacuum of 30 to 40% in the cell. The last batch must have 5 to 10 cells, so that they can operate alternatively.
Alternative Strategy for Emitter
The Emitter may open into a vertical pipe of length 100 feet, and diameter 3 feet, with a 9 inch valve at the bottom.
This pipe could contain an internal chamber, where we could inject water or drain it externally.
Injecting water would increase the pressure inside the vertical pipe, and will eject the exhaust at a high pressure.
The cost of pumping the water back 100 feet high is small, and could be ignored.
Conclusion
The first big question around the solution is elevation of New Delhi and Gandhidham, Gujarat.
A Google query produced the following reply.
Question:
what is the elevation of New Delhi above sea level, and compare it with Gandhigram Gujarat, and Kandla Port Gujarat?
Answer:
The average elevation of New Delhi is approximately 230 meters (755 feet) above sea level. Situated on the landlocked Indo-Gangetic Plain, its elevation varies slightly across the city, ranging between 200 and 300 meters.
Geographic Comparison Because New Delhi is far inland while Gandhidham and Kandla Port are located in the coastal Kutch region of Gujarat, there is a sharp drop in altitude as you move toward the coast.
| Location | Elevation (Meters) | Elevation (Feet) | Topographic Context |
|---|---|---|---|
| New Delhi | ~230 m | ~755 ft | Inland plain bounded by the Yamuna River and the Delhi Ridge. |
| Gandhidham, Gujarat | ~17–27 m | ~56–89 ft | Low-lying flat terrain situated just inland from the Gulf of Kutch. |
| Kandla Port, Gujarat | ~2–3 m | ~7–10 ft | Sea-level coastal environment located right on the banks of the Kandla Creek. |
Key Takeaways
- New Delhi vs. Gandhidham: New Delhi sits roughly 200+ meters higher than Gandhidham.
- New Delhi vs. Kandla Port: New Delhi sits nearly 227 meters higher than Kandla Port, which sits just barely above the high-tide sea level due to its role as an active tidal seaport.
Another big question surrounding the solution is, how much emission by weight and volume is transported across the system, and how fast?
The calculation for the speed of transport and emissions computed by Google AI, are provided as references.
The speed of transport for carbon dioxide from a 3300 feet pipe (or roughly 1km) with 12 feet diameter and connected to another pipe of same dimensions, by a 2ft valve, is about 2.2 minutes, and the mass transferred is about 4.75 metric tons.
If we could transport 4.75 metric tons of exhaust in 5 min, then we could transport 4.75 x 12 = 57 metric tons in an hour.
The smog would not go anywhere, unless the Emitters disperse the exhaust into the atmosphere.
The emitters are much slower, and to eject 5 metric tons of gas from a cell, they requires 60 kwh of energy, and 12 minutes of time.
A cell typically holds 12.9 to 14 metric tons of gas, and ejecting 5 metric tons, could induce a partial vacuum of 30 to 40%.
In one hour, we could eject roughly 20 metric tons of the gas. This is the bottle neck of the system or the solution, and a mechanical device like fan, is required for dispersion. Kutch, Gujarat has the highest wind energy in India, and if that can be harnessed, the solution may become viable.
The vehicle exhaust generated in New Delhi per day is 378.92 metric tons per day. It could take a full day of operation to remove the smog of New Delhi.
The energy required = (total exhaust / 5mt) x 60kwh = 378.92 / 5 X 60 = = 4,547.04 kwh
Cost at Rs10 / kwh = Rs 45,470 per day.
Remarks
The design uses simple physics to transport the pollution. Electronic locking of valves using external batteries could greatly improve the efficiency of the system. The final draining at emitter may require a mechanical aid, like a fan.
It may be noted that the design is based on high school physics, whereas the mechanics of the design, requires expertise in fluid mechanics, heat and mass transfer.
The author of the article is a software professional, and is not an expert in fluid mechanics, and does not possess the expertise to validate the answers provided by Google AI.
References:
1) Collector Dynamics
2) Emitter Dynamics