In recent years, with the rapid development of urban economy, the discharge of urban sewage keeps increasing, a large number of pollutants enter the river, and the water body appears seasonal or year-round black and smelly. Black and smelly water not only brings poor sensory experience to the masses, but also directly affects their life. In order to improve the natural water environment, Techase has launched a comprehensive river and lake management solutions, including sewage treatment plant, silt removal desilting dredging, water body ecological restoration andsludge hydrothermal brick making.