环境影响评价中有关冷却塔噪声问题的探讨

Study on Noise Problems of Cooling Towers in Environmental Impact Evaluation

针对尚处于规划阶段或者初步设计阶段的民用建筑,在冷却塔方案尚未确定时,结合环境影响评价实例,从环评角度对冷却塔进行估算选型及噪声分析.根据某办公楼的实际情况,对冷却塔不同设置形式的噪声进行评价,垂直风流方向噪声较小;结合建筑物本身及周围状况对冷却塔提出合理的降噪措施,采取降噪措施后,冷却塔噪声可有效衰减20dB(A)左右.

When the civil building is in the planning stage or preliminary design stage and the plan of cooling towers has not yet been established,this article selects cooling towers roughly and analyzes their noise from the perspective of environmental impact evaluation and in combination with the environmental evaluation practice.According to the actual situation of some office building,it evaluates the noises from the cooling towers of different setting forms and the noise is lower in the vertical airflow direction.In the light of the building itself and the surrounding circumstances,it puts forward some reasonable noise reduction measures for the cooling towers and the noise can be reduced by about 20 dB（A）.