POLLUTION OF SNOW AND ITS INFLUENCE ON WATER QUALITY

在北方地区，降雪和积雪的污染及其对自然环境的影响日益严重。雪和雨在空气中落下时受到污染，落到地面后受到人类活动产生的有害物质的污染。这种受污染的雪在春季很短的时间内融化，影响环境，特别是水质。实际上，观察到富营养化、有机物和重金属污染。在认识到以上事实的基础上，本研究旨在明确积雪污染的实际情况和污染机理，并提出一些污染控制方法，以控制水环境。人们发现；地面上的雪被大量的道路灰尘和人类活动的废物严重污染了。这些污染物大多为固体，含有高浓度的有机物、营养物和重金属。为了保护自然环境，这一现象不容忽视。为了防止水环境的污染，有必要尝试减少城市活动的沉积物，对污染雪进行部分收集和处理，并控制街道积雪堆积地的污染。其他人

In northern regions, pollution of falling snow and piling one and its influence on the natural environment are becoming serious problems.Snow as well as rain is polluted while falling down through the air and after laying on the ground one is contaminated with harmful materials originated by human activities. Such polluted snow melts in a very short period in spring and influences the environment, especially water quality. Actually, eutrophication and pollution of organic substances and heavy metals are observed. This study, recognizing the facts above, aims at clearing the actual conditions of polluted snow and pollution mechanism and proposing some pollution control methods in order to control the water environment. It was found out that;1. Snow laid on the ground is extremely polluted by a great amount of road dusts and wastes of human activities.2. Most of these polluting matters are solid and contain organic matters, nutrients and heavy metals in a high concentration. This phenomenon cannot be ignored in order to conserve natural environment.3. For the prevention of pollution of water environment, trial to lessen the deposits from the urban activities, partial gathering and treatment of polluted snow and pollution control of the land for piling up the snow gathered from the streets are necessary.4. Others