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Davao City to use ‘bokashi’ balls to clean canal


By Yas D. Ocampo

Davao City – The City Environment and Natural Resources Office (Cenro) here is mulling the use of “bokashi balls” to improve the condition of the Roxas Avenue drainage.

EM (effective microorganisms) bokashi balls uses biotechnology that allows microorganisms to take advantage of ecosystems like stagnant drainage canals.

“Bokashi” is a Japanese term that means “fermented organic matter” and refers to a system developed in Japan that uses beneficial micro-organisms to break down toxins and food waste.

This means that the balls, usually made of different materials such as the activated EMs and other substances like clay, need only to be thrown into dirty, stagnant water, and will do most of the cleaning.

Cenro chief Elisa Madrazo, in an interview, said that the Cenro was already coordinating with the City Engineer’s Office for the project to schedule the implementation of the proposal.

“The engineers will have to desilt first,” Madrazo said. “Then we will implement.”

It can be recalled that around one year ago, Mayor Sara Duterte-Carpio ordered the removal of some night market stalls, specifically those right next to the canals, towards the portion of Roxas Ave. near CM Recto (Claveria) street.

Carpio had earlier said that the positioning of the food stalls last year was not conducive to eating, as there was a bad odor coming from the canals where food were being prepared and served nearby.

Madrazo said that Barangay Hizon in Agdao was already advocating for the use of these items in their own community to clean up some canals.

Meanwhile, Madrazo said that an offshoot of the desilting will be a mini-materials recovery facility to be set up from the collected waste from the large drainage canal.

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