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Air Pollution

50% of Thai trucks checked in Don Mueang belching black smoke

Greeley Pulitzer

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50% of Thai trucks checked in Don Mueang belching black smoke | The Thaiger
PHOTO: Random checks being conducted on trucks near Don Mueang - The Nation
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Last April Thai PM Prayut Chan-o-cha announced that those driving polluting vehicles would face arrest and fines, warning owners of transport businesses they’ll be held responsible for toxic emissions. Now the Department of Land Transport announced it was stepping up measures to bring emission levels from trucks and public transport vehicles within safe limits. The measures are designed to alleviate pollution problems in Bangkok and surrounding areas. With poor air quality returning to the skies over Bangkok, residents are now demanding fewer words and more action.

Yesterday, random checks were conducted on trucks along Bangkok’s Vibhavadi Rangsit Road. Inspectors included officials from the Traffic Police Division, Pollution Control Department (PCD) and the Don Mueang District Office. They spent about two hours flagging down trucks near the Don Mueang Airport. Twelve of the 25 trucks checked were belching black smoke in excess of safety standards.

A spokeman for the PCD says the department has the authority to order the drivers of the 12 trucks to keep them off the road while necessary improvements are made, which must be done within 30 days.

Operators of trucks that miss the deadline may be fined up to 5,000 baht.

SOURCE: The Nation

50% of Thai trucks checked in Don Mueang belching black smoke | News by The Thaiger

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Air Pollution

Air purifiers to be added to the top of Bangkok buses. Really…

The Thaiger

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Air purifiers to be added to the top of Bangkok buses. Really… | The Thaiger
PHOTO: The air-pollution-busters being installed on Bangkok bus tops - The Nation

“It is like a single dead pixel on your phone, hardly noticeable”

Air purifiers sitting on tops of buses. Apparently this is another solution for Bangkok’s air pollution problems. Sounds like the people selling the mobile bus-top air purifiers have a very convincing sales person!

But Bangkok’s Mass Transit Authority director Surachai Eamvachirasakul says the department will go ahead with plans to install the air purifiers on top of Bangkok’s public buses. The promise is that it will reduce dust pollution. The air-filtration systems which will be installed on top of some of the state-operated buses are said to be capable of sucking in polluted air and blowing out clear air behind it. The director cited several test runs of the system as “evidence”.

“The device is capable of filtering 10,000 cubic metres of air per one trip. Scientific research indicated that an adult would breathe in an average 0.5 cubic metres per hour, so a bus would be able to provide clear air to more than 20,000 people on the road.”

This fuzzy maths shows an appalling ignorance of the larger pollution problem, most of which comes from plantation fires to the north of the capital – little to do with any local city contributions.

Even Chulalongkorn University biologist Jessada Denduangboripant says the plan “will have a near-zero impact on the PM2.5 dust particles”. Near zero. That’s a much closer estimate of the effectiveness of strapping air purifiers to the tops of the buses. Better still, don’t run the polluting old diesel buses in the first place which may cause more pollution per kilometre than the air purifiers could ever ‘filter’.

“If it is working as claimed, I believe it will only be capable of cleansing just a pixel of Bangkok,” Jessada said to Khaosod English.

Another scientist opined that the effectiveness of the air purifiers “would be trivial at best”, given the amount of air in the capital city against what the machines could process.

Matipon Tangmatitham, a researcher at the National Astronomical Research Institute of Thailand got out his calculator.

“Based on the area of Bangkok and the height of dust particles from the ground, it gives out 1.568E+12 cubic metres of air that needed to be filtered. But the scheme would only produce 20,000 cubic meters of clean air, even when all the 500 buses are on the road.”

(And how much pollution is caused by the 500 buses cruising around the city?)

But BMTA director Surachai hit back at the scientists with a test result he gathered, which compares PM2.5 level before entering the device at 48-52 AQI with 1-5 AQI after passing through the device.

In truth, the effectiveness of the system would be almost impossible to calculate on a city-wide situation. A few extra kilometres of wind strength from the north on a day of burn-offs in the north would blow the pollution readings off the scale, completely obliterating any tiny improvements made in the immediate vicinity of the passing bus.

SOURCE: Khaosod English

Air purifiers to be added to the top of Bangkok buses. Really... | News by The ThaigerAir purifiers to be added to the top of Bangkok buses. Really... | News by The Thaiger

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Air Pollution

Chiang Mai blanketed in smoke as fires burn around the province

The Thaiger

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Chiang Mai blanketed in smoke as fires burn around the province | The Thaiger
PHOTO: Downtown Chiang Mai this morning. Where's the blue sky gone? - Neo

It’s smoggy, smokey and generally unpleasant in northern Thailand today. But don’t take our word for it, look up to the skies around Chiang Mai or check the copious amounts of graphic evidence, freely available, about the seriousness of the fires, almost all deliberately lit, around the region.

“It’s been bad all morning and there’s a noticeable smell of smoke in the air now. I am sure it is not good for us”

The manager of a flower shop contacted The Thaiger and sent us a few photos of the Chiang Mai skies.

“We are used to seeing people walk around with face masks because of the coronavirus threat but now most of us are worried about the air pollution.”

Plantation burn-offs are a seasonal problem where the owners of rice and sugarcane crops, and other crops, burn the residual foliage and plants in preparation for the next crop. It’s the cheapest option for farmers. Despite threats and government policy, little is preventing the practice from continuing.

Read our editorial about the ‘smoke screen’ surrounding the fires and the air pollution problem HERE.

Chiang Mai blanketed in smoke as fires burn around the province | News by The Thaiger

SOURCE: Global Forest Watch

Whilst the air visual air pollution mapping officially registers Chiang Mai’s air quality at 178 this morning (that’s 178 particles of 2.5micron particulate per cubic metre), there are parts of the province registering way up into the 200s today, officially ‘Very Unhealthy’. Indeed Chiang Mai is today’s 9th most polluted city in the world, in the same company as cities like Dhaka, Delhi, Kathmandu and Mumbai.

Chiang Mai blanketed in smoke as fires burn around the province | News by The Thaiger

Chiang Mai blanketed in smoke as fires burn around the province | News by The Thaiger

SOURCE: Air Visual

Read more about the seriousness of Chiang Mai’s choking smoke today HERE.

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Air Pollution

Bangkok halts construction of electric rail and highrises for 3 days

Greeley Pulitzer

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Bangkok halts construction of electric rail and highrises for 3 days | The Thaiger
PHOTO: A thick haze hangs over Bangkok - Chiang Rai Times

 

The Bangkok Metropolitan Administration today ordered a 3 day suspension of the construction of seven electric train lines, highrise buildings and roads throughout Bangkok, in order to reduce PM2.5 pollution.

The Pollution Control Department reported this morning that 39 areas in Bangkok and four in its suburbs were found to have high levels of PM2.5 particles, measured to be between 37 and 76 microns per cubic metre, exceeding Thailand’s 50 micron safety threshold.

Lat Phrao Soi 95 in Wang Thong Lang district, Tambon Khlong Koom in Bung Koom district were the worst affected, with 76 microns, followed by 72 microns in Tambon Thung Song Hong in Laksi district.

City Hall’s spokesman Pongsakorn Kwanmuang said yesterday that high atmospheric pressure, compounded by poor air circulation, is preventing fine particles from dispersing, thus the need to suspend construction of major projects.

He said that activities not directly related to construction, such as interior decoration of highrise buildings, can continue, and that the city’s administration is coordinating with the Industrial Works Department to send inspectors to factories in and around Bangkok to check for excessive smoke discharge.

SOURCE: Thai PBS World

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