Study on the Technology of Supplying Water Safely by Long-Distance Pipeline

The extensively built long-distance water transmission pipelines have become the main water sources for urban areas. To ensure the reliability and safety of the water supply, from the viewpoint of overall management, it would be necessary to establish a system of information management for the pipeline. The monitoring, calculating and analyzing functions of the system serve to give controlling instructions and safe operating rules to the automatic equipment and technician, making sure the resistance coefficient distribution along the pipeline is reasonable; the hydraulic state transition is smooth when operating conditions change or water supply accidents occur, avoiding the damage of water hammer. This paper covered the composition structures of the information management system of long-distance water transmission pipelines and the functions of the subsystems, and finally elaborated on the approaches and steps of building a mathematics model for the analysis of dynamic hydraulic status.

长距离输水管道水质变化及管壁生物膜净水效能研究进展

长距离输水工程作为应对供水紧缺矛盾的有效措施在世界各国已有悠久的历史,近年来长距离输水管道内水质变化及管壁生物膜净水效能等问题引起国内外专家的高度关注。介绍了近年来有关长距离管道相关研究成果,包括管道微生物生长特点、净水效能及水质变化规律;预氧化作为调控输水管道水质的措施之一对水质及微生物带来的影响;针对不同氧化剂间的联用分析了抑制硝化作用、预防水质恶化的措施,以期为长距离输水管道在实际中的应用及控制管道中水质恶化提供思路。