大口径污水管配套扩容迁建的调水方案设计

Design of Water Regulation Scheme for Expansion and Relocation of Large-Diameter Sewage Pipelines

摘要:

城镇污水管道作为城市的地下生命线，承担着污水收集与输送的重要职责，在维持城市水环境方面发挥着不可替代的作用。当前，早期建设的污水管道逐渐暴露出老化、破损、管径无法满足使用需求的问题。对建成区存在上述问题的现状管道迁改扩容成为必然之举。大口径污水管因其现状水量较大，在设计过程中应配套全周期调水方案以保障污水的正常处理。苏州市某污水处理厂进厂管迁改扩容工程基于上述原因，采用了全周期调水方案，以及统筹考量水泵选型、临时调水设施选址、调水管管位确定、除臭防堵等设施配置，并为施工人员提供安全保障等；针对不同工程时间节点制定的调水方案最终保障了工程的顺利实施。

Abstract:

Municipal sewage pipelines, as the “underground lifeline” of a city, undertake the important responsibility of collecting and conveying sewage and play an irreplaceable role in maintaining the urban water environment. At present, the sewage pipes constructed in the early days are gradually showing signs of aging and damage, and the current pipe diameters are increasingly unable to meet the usage requirements. It is an inevitable move to reconstruct and expand the existing pipelines with the above-mentioned problems in the built-up area. Due to the large current water volume of large-diameter sewage pipes, a full-cycle water regulation scheme should be supported in the design process to ensure the normal treatment of sewage. The full-cycle water regulation scheme is adopted in the intake pipe relocation and expansion project at a wastewater treatment plant (WWTP) in Suzhou based on the above reasons, which comprehensively considers the factors such as pump selection, siting of temporary water regulation facilities, determination of water regulation pipe position, and configuring facilities for odor control and blockage prevention, and ensures the safety of construction personnel. The water regulation scheme formulated for different engineering time nodes ultimately ensures the smooth implementation of the project.