Publications·December 31, 2023
This report, developed by ESCAP-APCTT and NSTDA, explores the state of air pollution control in Bangkok, Thailand, focusing on technological interventions, policy frameworks, and existing gaps. It aims to guide policymakers, researchers, and technologists by identifying current technologies in use, highlighting remaining challenges, and suggesting opportunities for technology transfer and innovation.
1. Air Pollution in Bangkok: Overview
Bangkok faces serious air pollution from various sources:
Transportation: Rapid urbanization has led to an increase in private vehicle ownership, creating high emissions of PM2.5, NOx, and VOCs.
Industrial emissions: Especially from areas near the city and in adjacent provinces.
Construction and open burning: Including seasonal agricultural burning and waste burning, contributing to haze.
PM2.5 levels often exceed both Thai national standards and WHO guidelines. Episodes of seasonal haze are particularly severe from December to March.
2. Current Interventions
The report outlines multiple technological and policy-level interventions:
a. Monitoring and Information Systems
Continuous Air Quality Monitoring Stations (AQS) by the Pollution Control Department (PCD).
Public information dissemination via websites, apps, and alert systems.
Use of satellite remote sensing to supplement ground monitoring.
b. Transport-Sector Interventions
Vehicle Emission Standards (Euro 4 for new vehicles, with a roadmap to Euro 5).
Vehicle inspection and maintenance requirements.
Promotion of EVs and hybrid vehicles, though uptake is limited.
Mass transit investments such as MRT and BTS skytrain to reduce traffic dependence.
c. Industry and Construction
Stack emission controls for major polluters.
Regulation of dust from construction sites, though enforcement remains weak.
d. Open Burning and Biomass
Burning bans during critical periods.
Encouragement of composting and alternative disposal methods for agricultural waste.
Programs to promote clean cooking and heating fuels in rural areas.
3. Identified Gaps and Challenges
Insufficient real-time, high-resolution monitoring, especially in peri-urban zones.
Lack of integrated data platforms for cross-sector air quality management.
Limited enforcement of vehicle and industrial standards.
Inadequate coordination between agencies at the local and national level.
Low public awareness and limited behavior change, despite campaigns.
No single institution with overarching AQM mandate for the city.
4. Recommendations
The report identifies several areas for improvement:
Strengthen emissions inventory and source apportionment studies to better tailor interventions.
Adopt low-cost sensor networks to fill monitoring gaps.
Invest in AI-based forecasting and modelling tools.
Enhance institutional coordination, possibly through a city-level clean air task force.
Promote technology transfer mechanisms to scale clean technologies (e.g., in transport, biomass conversion, and industrial emission reduction).
Foster public-private partnerships (PPPs) for innovation in air quality solutions.
5. Regional and International Context
The report places Bangkok in a broader context of:
Transboundary haze affecting the city, particularly from neighboring agricultural burning.
Need for regional cooperation with ASEAN counterparts.
Alignment with SDG 11 (sustainable cities), SDG 3 (health), and SDG 13 (climate action).
Key Words / Topics
Bangkok air quality
PM2.5, NOx, VOCs
Technological gaps
Vehicle emissions
Biomass burning
Real-time air monitoring
Satellite data
Public awareness
Policy coordination
Emission inventory
Clean transport
Institutional reform