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11月下旬,我国多地迎来入冬以来首场降雪,大部地区从小雨、雨夹雪转雪,逐渐加大至中雪、暴雪。气象台接连发布大风蓝色预警、暴雪蓝色预警和道路结冰黄色预警。为了防止道路结冰,各城市均在市区干道和人行道撒融雪剂融雪,以保证行车和市民出行安全。每年雨雪天气过后,大量的雨水和积雪被白白浪费,或者被化学消融后成为含有化学成分的废水,从自然环境和水源保护上看,这是一种令人心痛的浪费。从去年开始,北京市严格控制融雪剂适用范
In late November, the first snowfall in our country since the beginning of winter ushered in most areas from light rain, sleet to snow, and gradually increased to the snow, snow. Meteorological Observatory issued a series of windy blue warning, Blizzard blue warning and road icing yellow warning. In order to prevent icy road, all cities in the urban roads and sidewalks sprinkle snowmelt snow, in order to ensure traffic safety and public travel. After the rain and snow each year, a lot of rain and snow have been wasted, or chemically ablated to become a chemical-containing wastewater. This is a heart-wrenching waste in terms of the natural environment and water conservation. From last year, Beijing strictly control the application of deicing salt