1. The main impacts of domestic waste landfill on the environment include:
1) the pollution of leachate to surface water and its influence on groundwater environment after the destruction of impervious layer;
2) Environmental risks such as air pollution and explosion caused by landfill gas;
3) Noise generated by garbage transportation and landfill operation;
4) Impact of garbage dump construction on ecology and landscape;
5) Infectious diseases, such as pests in landfills;
6) Impact of landfill on geological environment, such as landslide, collapse and debris flow.
2, the main contents of the landfill EIA:
1) site selection evaluation
Site evaluation is the basic content of landfill environmental impact assessment, which mainly evaluates whether the proposed site meets the site selection criteria. The method is to judge the site item by item according to its natural conditions. The evaluation focuses on the hydrogeological conditions, engineering geological conditions and soil self-purification ability of the site.
2) Natural and environmental quality assessment.
Mainly evaluate the natural environmental quality of the proposed site and its surrounding air, surface water, groundwater, noise and so on. This method is generally based on monitoring values and various standards, and adopts single-factor and multi-factor comprehensive evaluation methods.
3) Analysis of engineering pollution factors
This paper mainly analyzes the main pollution sources and pollutants, their quantity, types and discharge methods that may be produced during the construction of landfill and after it is put into operation. Its methods generally adopt calculation method, analogy method and empirical statistics method. Pollution sources generally include leachate, released gas, odor and noise.
4) Impact assessment during construction
It is necessary to evaluate the environmental impact of domestic sewage discharged from the site during the construction period, mechanical noise, vibration and secondary dust generated by various construction machinery on the surrounding areas.
5) Water environmental impact prediction and evaluation
Mainly evaluate the safety of landfill lining structure and the influence of leachate discharge on the surrounding water environment;
① Influence of normal discharge on surface water. This paper mainly evaluates whether the leachate will affect the receiving water body or how much it will affect the receiving water body after it reaches the discharge standard.
② The influence of abnormal leakage on groundwater. This paper mainly evaluates the influence of leachate infiltration on groundwater after lining rupture, including infiltration direction, seepage velocity, migration distance, soil self-purification ability and effect.
6) Prediction and evaluation of atmospheric environmental impact
This paper mainly evaluates the impact of landfill gas and odor on the environment:
(1) releases gas. According to the structure of exhaust system, the reliability of exhaust system, the possibility of exhaust utilization and the impact of exhaust on the environment are predicted and evaluated. The prediction mode can be the ground source mode.
2 foul smell. Mainly evaluate the possible impact on the environment after transportation, landfill and site closure. According to the type of garbage, the location, type, concentration and influence range of odor in each stage should be predicted during the evaluation.
7) Noise environmental impact prediction and evaluation
This paper mainly evaluates the impact of vibration and noise generated by various machinery on the environment in various stages such as garbage transportation, site construction, garbage landfill operation and site closure. According to the characteristics of various machines, the noise level of mechanical noise can be predicted, and then combined with sanitary standards and functional area standards, it is evaluated whether it meets the noise control standards and whether it will have an impact on the nearest residential area.
8) Pollution prevention and control measures
Mainly includes:
① Control measures for leachate treatment and remedial measures for liner rupture of landfill;
② Measures for guiding, discharging or comprehensive utilization of released gas and deodorization measures:
③ Vibration and noise reduction measures.
9) Environmental economic profit and loss evaluation
It is necessary to calculate and evaluate the investment and economic, social and environmental benefits of pollution prevention facilities.
10) Other evaluation items
① Evaluate the soil, ecology and landscape in combination with the land and ecology around the landfill.
(2) Risk accident assessment of leachate exceeding the standard and garbage explosion caused by abnormal physical and chemical conditions of garbage release gas in flood characteristic year.
For more information about project/service/procurement bidding, and to improve the winning rate, please click on the bottom of official website Customer Service for free consultation:/#/? source=bdzd