Nepal | July 09, 2020

Brick kilns adopting zig-zag technology

Himalayan News Service
Share Now:

File – Migrant workers stacks bricks onto their heads at a brick kiln in Sipadol, Bhaktapur on Wednesday, February 3, 2016. Photo: Skanda Gautam

Kathmandu, December 30

Brick kilns in the Kathmandu Valley have adopted zig-zag system in brick production to reduce brick kiln emissions.

Former industry minister Mahesh Basnet had released ‘Design Manual for Improved Fixed Chimney Zig-Zag Brick Kilns’ in October last year and entrepreneurs have been constructing their kilns under this model, especially following the earthquake in 2015. Such model for brick kiln construction was developed by the International Centre for Integrated Mountain Development (ICIMOD) and the model follows zig-zag pattern of brick baking to reduce emission of suspended particular material (SPM) into the atmosphere.

Under this model, bricks are laid in a zig-zag system while baking and single-man-coal-feeding system is applied when bricks are baked. This system of baking bricks is believed to increase air flow inside brick chimneys that ensures effective and uniform burning of coal, which ultimately helps to reduce black carbon emission from brick chimneys.

“Almost all 100 brick kilns operating in the Valley have reconstructed their chimneys as per the new model,” said Mahindra Bahadur Chitrakar, president of the Federation of Nepal Brick Industries, adding that zig-zag methodology has proved not only to be environment-friendly and energy-efficient but also resulted in enhancing structural safety of chimneys.

As per Chitrakar, brick kilns outside the Valley are also slowly adopting the new model of chimney construction and production through zig-zag technology. “The new model has become more popular among brick kilns after the earthquake of last year, which damaged almost 350 brick kilns across the country.”

According to the federation, there are around 950 brick kilns across the country.

Operators of brick kilns also concur that adoption of new model of baking bricks in zig-zag system has significantly reduced emission of SPM into the atmosphere.

“As per the regulation, brick kilns cannot emit more than 700 mg/NM3 SPM. However, the SPM emission dropped to as low as 113 mg/Nm3 after the brick kilns were reconstructed under new model and bricks were baked under zig-zag system,” said Raj Kumar Lakhemaru, owner of Swet Bhairab Fixed IttaUdhyog in Bhaktapur, adding that this has also reduced health-risks of labourers working inside the brick kilns.

“Smoke gets bent and filtered at numerous points inside the chimneys while bricks are baked using the zig-zag method. As a result, low carbon is emitted from the chimneys,” said Lakhemaru.

All 63 brick kilns in Bhaktapur have followed this method after realising the benefits.


A version of this article appears in print on December 31, 2016 of The Himalayan Times.

Follow The Himalayan Times on Twitter and Facebook

Recommended Stories:

More from The Himalayan Times:

Nepal COVID-19 Update: 255 new cases, 253 recoveries, no deaths

KATHMANDU: Nepal’s Health Ministry, in its regular press briefing, shared the latest updates on coronavirus contagion from across the country, and government’s response to the health crisis. As of today, 266,457 tests through Polymerase Chain Reaction (PCR) method and 312,402 Rapid Diagn Read More...

In Pictures: Rallying forth in Prime Minister's support

Supporters of Prime Minister KP Oli organised a rally at Lagankhel, Lalitpur, on Wednesday, for the seventh day. The pro-prime minister demonstrations were held in the wake of recent political developments wherein PM Oli is being asked to step down from his either of his posts. Read More...

Crash Landing on You's Son Ye-jin and Parasite's Lee Sun-kyun set for Hollywood debut?

KATHMANDU: Popular South Korean actress Son Ye-jin is set to make her Hollywood debut with film tentatively titled The Cross alongside Sam Worthington. Lee Sun-kyun from the Oscar-winning Parasite has also been a role in it. Qutoing an official from Son’s agency MS Team Entertainment, Th Read More...

Over 90pc COVID-19 recovery reported in Rautahat

RAUTAHAT: Rautahat district, which has been hard-hit by the pandemic, has shown a promising rate of COVID-19 recovery. The district with about 92 percent of patients being discharged from health facilities has bagged much appreciation for the efforts of the concerned authorities. According to Read More...

Billie Eilish's mother reveals singer's obsession with Justin Bieber

KATHMANDU: American singer-songwriter Billie Eilish's mother Maggie has revealed about the singer's childhood obsession with Canadian singer Justin Bieber. In a recent episode of the 18-year-old singer's Apple Music radio show me & dad radio, Maggie, who appeared as a special guest talked ab Read More...

BTS members accused of using MBA enrolment to delay military enlistment

KATHMANDU: The members of K-pop supergroup BTS are facing accusations that they are using a graduate programme to delay their mandatory military duty. The Korea Times reports that speculation started swirling when their agency, Big Hit Entertainment said on July 7 that Jimin and V will start the Read More...

Halle Berry won't play transgender role, apologises for considering it after backlash

KATHMANDU: Oscar-winning Hollywood star Halle Berry has pulled out from playing a transgender role in a film and apologised for conisdering the role following a backlash on social media. According to PTI, Berry had spoken about the role in an Instagram Live interview. "(The film is about) a char Read More...

Priyanka Chopra chosen Toronto International Film Festival's ambassador

KATHMANDU: Actor Priyanka Chopra has been chosen as the ambassador of the Toronto International Film Festival (TIFF) 2020, joining the list of 50 celebrated filmmakers and actors who are invited as the ambassadors of the TIFF. Chopra, 37 put out a post on Instagram and shared a montage featuring Read More...