Selecting a waste treatment model suitable for Viet Nam's development conditions remains a challenge for local authorities, a government official said on June 12 at a seminar in HCM City.

Litter classification was introduced in November last year but has proved ineffective.

Concerned that the Binh Nguyen waste treatment factory will affect human health, local people have blocked trucks carrying waste to its factory, with hundreds of tons of garbage now stuck in residential areas and the Dung Quat Economic Zone.