How to do the pre assessment of ambient air pollution?

The pre-assessment of ambient air quality is the premise and basis for the construction and optimization of environmental monitoring network, and it is also an effective way to understand the local pollution level. According to the requirements of the EU 96 62 EC air quality assessment and relevant domestic management regulations, it is necessary to evaluate and investigate the level of pollutants and the representativeness of the points in the area of concern before establishing long-term automatic monitoring stations and implementing air pollutant emission control measures. Pre-assessment scheme design, preliminary investigation of the evaluation area according to user needs, design sampling points and evaluation projects, etc.

Gaseous contaminants are analyzed using a passive sampler-based saturation method, and particulate matter can be analyzed using a passive sampler with a filter membrane (post-sampling electron microscopy) or an automated sampler (active, post-sampling laboratory chemical analysis) for composition analysis and source analysis. The detailed ambient air pollution pre-assessment plan can be consulted by Shanghai BROADE Environment.

Through the investigation, the main toxic and harmful gases that cause indoor air pollution are mainly released through the building materials, decoration materials, furniture, etc. used in decoration projects. Among them, large core boards, plywood, composite wood flooring, MDF and other boards, interior wall coatings, paints and other coatings, all kinds of adhesives release formaldehyde gas, non-methane volatile organic gases, which are the main sources of indoor air pollution.

Indoor ambient air quality pre-evaluation technology can be widely used in various indoor building decoration projects. It can be applied not only to residential decoration projects, but also to public building decoration projects, and can also be applied to interior decoration items such as furniture.

Common EIA methods include:

1. Environmental impact: Through the analysis of the possible environmental impact of the project, the degree and trend of the impact on the environment after the implementation of the project.

2. Environmental risk assessment: Assess the risks and probabilities that the project may cause to the environment and human health, and formulate corresponding risk management measures.

3. Ecosystem evaluation: Assess the impact of the project on the ecosystem, including species diversity, community structure, ecological processes, etc.

4. Hydrogeological evaluation: evaluate the impact of the project on water resources and geological fiber transportation environment, including groundwater, soil erosion, flood disasters, etc.

5. Social impact assessment: evaluate the impact of the project on socio-economic, cultural, historical, population migration, etc.

6. Health impact assessment: evaluate the impact of the project on human health, including noise, air pollution, water pollution, electromagnetic radiation, etc.

Methods can be used individually or in combination to provide a comprehensive assessment of the project's likely impact on the environment.

Environmental impact assessment can be defined as the process of developing environmental consequences for a project. Environmental impact assessment aims to evaluate and express the environmental impact of any available method in the decision-making process and is an important method to ensure the survival of people in environmental conditions.

Environmental impact assessment is a method and system for analyzing the environmental impact that may be caused by the implementation of planning and construction projects, proposing countermeasures and measures to prevent or mitigate adverse environmental impacts, and tracking and monitoring.

Environmental impact assessment is a quantitative and qualitative assessment method used to assess the potential environmental impact of a construction or development project.

Principles of Environmental Assessment:

1. Transparency: All evaluation bases and decisions must be open and feasible.

2. Determination: The timeline and procedures for the project or evaluation should be approved in advance and followed by all participants.

3. Participation: All locations can take advantage of the program in a timely and appropriate manner.

4. Practical: The project or evaluation process should provide results and information and can be used for decision-making and planning.

5. Flexibility: The project or evaluation process should be able to make changes and effectively handle proposals and decisions.

6. Economic: The project or evaluation process and its results ensure that society protects the environment at the lowest cost.

7. Credible: A professional assessment should be made based on the objectives.

8. Responsibility: The team leader or decision-maker is responsible for all parties for their actions and decisions during the evaluation process.

The environmental impact assessment of surface water includes the following contents:

Survey of the current situation. 2.Hydrological surveys and hydrographic surveys.

3.Investigation of point pollution sources.

4.Investigation of non-point sources of contamination.

5.Water quality investigation and water quality parameter selection.

6.River water quality sampling section and sampling point setting.

7.Estuarine water quality sampling section and sampling point setting.

8.Lake (reservoir) water quality sampling section and sampling point setting.

9.Setting of bay water quality sampling sections and sampling points.