Building Water Supply and Drainage Design Under Carbon Neutrality Background

Green building water supply and drainage system is the core part of urban infrastructure, which is related to the normal operation of the city and the quality of daily life of residents. However, the quality management of design and construction technology in this field faces many difficulties, such as how to ensure the standardization and efficiency of the construction process, how to review and grasp the key aspects of the design of pipeline network layout, material selection and construction methods. At the same time, in the installation of facilities, piping connections, system commissioning and other aspects of the construction process are also facing quality control challenges, the urgent need for targeted solutions. Therefore, this paper carries out an in-depth study on the water supply and drainage system in a large-scale comprehensive construction project, focusing on the application of water-saving equipment, the treatment effect of the water reuse system, and the implementation effect of energy-saving and emission reduction measures. Through statistical analysis of the project’s water consumption, it is found that toilet flushing and air-conditioning cooling water are the main sources of water consumption, and the installation of water-saving equipment effectively reduces water consumption, with a water-saving rate of 9% to 12%. The water reuse system shows a high medium to high water utilization rate of 90% to 91%, which significantly improves the reuse of water resources. The analysis of the water saving effect of different design options shows that the best option is able to achieve a water saving rate of 14%. The implementation of energy saving and emission reduction measures resulted in reduced water consumption and lower carbon emissions, with energy saving and emission reduction rates ranging from 9% to 12%. These findings provide effective solutions for optimizing building water supply and drainage systems, improving resource utilization efficiency, and achieving green building goals.