淤泥是泥水环境的重要组成部分。是社会、经济系统存在和发展的基本因素，对区 域的国民经济发展的支持能力起着至关重要的作用。由于历史的累积和近期经济建设高速 发展等原因，我国90%以上的城市的泥水环境问题日益严峻。
Silt is an important part of muddy water environment. It is the basic factor for the existence and development of social and economic systems, and plays a vital role in supporting the development of regional national economy. Due to the accumulation of history and the rapid development of recent economic construction, more than 90% of China's cities have increasingly serious mud and water environmental problems.
表现为城市河道的严重淤积、 水资源短缺、水污染过重、水生态平衡遭到破坏等。从而使城市的持续发展越来越受到严重 阻碍，人居环境越来越受到严重威胁。
It is manifested in serious siltation of urban rivers, shortage of water resources, excessive water pollution, destruction of water ecological balance and so on. Thus, the sustainable development of the city is more and more seriously hindered, and the living environment is more and more seriously threatened.