Abstract:The construction height of the tank wall in large wastewater treatment plant (WWTP) and station is large, and the requirements of impermeability and overall appearance quality are high. In order to improve the construction quality of high and large tank wall in large sewage treatment structures and to reduce the safety risk, the application of prefabricated technology is explored in the construction process of sewage treatment structures. The anti-seepage treatment of connection position is the construction key. Combined with the construction example of the biological reaction tank wall in a WWTP, the construction of prefabricated double-sided composite wall in straight line section of high and large tank wall, cast-in-place concrete construction in arc section, joint treatment of prefabricated wall and cast-in-place bottom plate, and reinforcement technology of reinforced dark column at the connection position between prefabricated walls are analyzed and studied. And the key points of quality control in each link are summarized, which provides the references for the construction of high and large walls in large WWTPs.
