📋 Tender Overview
Air pollution in urban areas mainly comes from 4 groups: Traffic, construction, industrial production - craft villages and residential activities such as burning trash, straw, honeycomb charcoal, and votive paper. Controlling waste sources from construction and production is a key step to improving air quality. Identifying 4 main sources of air pollution From the beginning of winter until now, Hanoi has continuously appeared in the list of the 10 most air polluted cities in the world. Cold, dry air, temperature inversions, and dense urban activities cause PM2.5 fine dust to accumulate, creating a hazy sky, directly affecting peoples health. According to a report by the Department of Environment (Ministry of Agriculture and Environment), air pollution in urban areas mainly comes from four groups: Traffic, construction, industrial production - craft villages and peoples activities such as burning trash, straw, honeycomb charcoal, and votive papers. Among them, construction and industrial production are the major emission groups, especially in winter when weather conditions limit the diffusion of pollutants. According to data from the Department of Environment, industrial emissions related to air pollution account for about 29%, construction activities are both a direct source of PM2.5 fine dust emissions and cause road dust. This is identified as a major source of pollution. Experts of the project Integrating climate change resilience and environmental protection to develop green urban areas chaired by the Department of Environment, Ministry of Agriculture and Environment, also believe that controlling waste sources from construction and production is a key step to improve air quality. Strong application of technology suitable for each emission sourceAccording to Dr. Hoang Duong Tung, Chairman of Vietnam Clean Air Network, to improve air quality, it is necessary to deploy short-term, medium-term and long-term solutions, suitable for each emission source. For example, for transportation, many policies have been proposed and gradually implemented, such as establishing low emission zones, prioritizing the development of public transportation, converting to using clean energy vehicles... For large groups of waste sources from construction, industry and craft villages, experts suggest that it is necessary to soon build a full industrial emissions inventory system at both the central and local levels, integrated with the national environmental database. This system will help identify the main polluting industry groups, emissions over time and high-risk areas, thereby providing more effective intervention measures. At the same time, 24/7 monitoring of automatic monitoring systems at facilities with large emissions such as thermal power plants, cement, metallurgy, and waste incinerators is considered a mandatory requirement. Many experts emphasize that monitoring data must be continuously connected and transparent at an appropriate level to serve early warnings and specialized inspections. A more fundamental solution is energy conversion in production. Gradually replacing coal fuel with renewable energy sources or applying energy-saving technology in large heat-using industries will help significantly reduce emissions. Experts propose implementing an energy conversion support program in the Red River Delta and the Southeast - where many coal-using production facilities are concentrated. In addition, many localities need to review and develop a roadmap to relocate facilities that do not meet environmental protection requirements out of residential areas, in accordance with approved environmental zoning. Using drones to monitor pollution black spots Many countries are using drones to monitor dust and emissions from construction sites, production areas and pollution black spots. Experts evaluate this as a suitable solution for urban conditions in Vietnam, where the construction site area is large and construction activities are complex and difficult to check using traditional methods. Drones allow for continuous, wide-range monitoring, quick detection of violations and connection of data to management agencies, helping to increase the efficiency of enforcement of environmental protection regulations. The Department of Environment is coordinating with the National Remote Sensing Department to use drones to monitor straw burning in suburban areas and dust dispersion from large construction sites in Hanoi. The results are immediately transferred to local authorities for processing and publication on the mass media. At the seminar Improving air environment quality for urban areas organized by the Department of Environment in coordination with organizing units, representatives of the Department of Environment said that in addition to fixed monitoring stations, the unit has organized many points, using many types of mobile vehicles to monitor, measure and analyze the most accurate parameters. From the measured information, a number of forecast information channels have been provided twice a day. In addition to management measures, experts believe that localities need to invest in more specialized equipment such as vacuum cleaners and road washing trucks to maintain regular cleaning, and consider adding appropriate labor regimes for environmental sanitation forces during peak pollution hours. Increasing the frequency of street cleaning,Especially from October to April of the following year - a period of constantly increasing pollution - is also considered necessary. In addition, new technological solutions such as on-site or mobile vehicle cleaning systems, mist spraying technology to reduce dust at construction sites and residential areas, or models of collecting and recycling construction waste to reuse as materials are being proposed by many experts to pilot. Thu CucSee moreSee moreSee moreSee moreSee more see more
