一、概述上海朝晖造纸厂的噪声污染治理是该市的重点项目之一。该厂3~#造纸机车间,南侧与居民住宅毗邻,东侧距居民住宅仅约10m。车间内部噪声为87dB(此处及以下均指A声级),通过门窗等传至居民住宅处的深度噪声高达59.5～69.0dB。车间厂房高约8m,东侧墙玻璃窗面积占一半以上。若采用隔声采光窗或百叶通风窗,则面积既大费用也高。经论证 First, an overview Shanghai Zhaohui paper mill noise pollution control is one of the city’s key projects. The plant 3 ~ # paper machine shop, adjacent to the south side of residential buildings, residential buildings east of only about 10m. Workshop internal noise 87dB (here and below refer to the A sound level), through the doors and windows and other residents reached the depth of noise up to 59.5 ~ 69.0dB. Workshop plant about 8m high, the east side of the glass wall area accounted for more than half. With soundproof windows or louvres, the area is expensive and expensive. Proved