BMA Permanent Secretary inspects drainage system before rainy season

BMA Permanent Secretary inspects drainage system before rainy season

Mrs. Silapasuai Rawisaengsun, Permanent Secretary for the Bangkok Metropolitan Administration (BMA) had site visits to inspect the drainage system in the area of Bangkok Metropolis in preparing for rainy weather at Saen Saep Canal and Lat Phrao Canal Drainage Tunnel, Phra Khanong Water Pumping Station and Bueng Nong Bon Water Pumping Station.

She revealed that flood prevention in the area of Bangkok Metropolis had systems that facilitate fast drainage of water into rivers, canals and moats. Drainage tunnel is considered one of the systems that help increase drainage efficiency by receiving flood water from road surfaces and canals in localities into drainage tunnel system and draining to Chao Phraya River.

The BMA Drainage and Sewerage Department had implemented and completed many drainage tunnel construction projects. Three of them have already opened for service, namely, Saen Saep Canal and Lat Phrao Canal Drainage Tunnel, Bueng Makkasan Drainage Tunnel, and drainage tunnel under Bang Sue Canal. Moreover, there is also Bueng Nong Bon Drainage Tunnel which is now under construction and is almost completed. It will receive water from the east of Bangkok in Prawet district, Suan Luang district, and Bang Na district, starting from Nong Bon Swamp (or Bueng Nong Bon) through Chao Phraya River at the mouth of Bang O Canal. In the year 2022, the BMA will receive subsidy from the Government for the construction of additional drainage tunnels to speed up the drainage of water into Chao Phraya River without going through regular canal system. This will also help reduce the level of water in canal at the short period of time.

Regarding the collection and disposal of solid waste that floated in canals and trapped by water filters or sieves before flowing into drainage tunnel system, the BMA Drainage and Sewerage Department has installed additional machinery to increase efficiency in solid waste collection. It can replace the use of manpower, from originally 20 people to only 6 people. Normally, there is about 2 – 3 tons of floating solid waste; however, when it rains, a lot of floating waste of as much as 10 – 15 tons can be found. Waste collection must be done rapidly to prevent the waste from obstructing the water filters or sieves which will result in low efficiency in receiving water into the drainage tunnel system.

For more information: www.prbangkok-eng.com

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