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首页> 外文会议>NATO Advanced Research Workshop on Enhancing Urban Environment: Environmental Upgrading of Municipal Pollution Control Facilities and Restoration of Urban Waters; 20031106-09; Rome(IT) >IMPLEMENTATION EXPERIENCE OF CSO POLLUTION CONTROL POLICIES AND PROCEDURES IN THE UK
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IMPLEMENTATION EXPERIENCE OF CSO POLLUTION CONTROL POLICIES AND PROCEDURES IN THE UK

机译：英国CSO污染控制政策和程序的实施经验

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Historically, combined sewer overflows (CSOs) in the UK have been designed to discharge at fixed multiples of the dry weather flow in the sewer, usually 6 x DWF. Flows in excess of 6 x DWF would be spilled and the remainder carried forward to a Wastewater Treatment Plant (WTP). Problems arising from this pragmatic approach were recognised as early as the 1960s when a new approach, 'Formula A', was proposed to calculate an acceptable pass forward flow from a CSO. This is still in use as a minimum CSO spill setting criteria. In the 1960s, new designs of overflow were adopted to provide for retention of pollution in the sewer, such as the use of storage, and stilling pond or high side weir overflows. A method for estimating storage requirements was developed in the late 1970s. Referred to as the SDD method, it is based on a Formula A spill threshold, plus storage within the CSO related to the available dilution in the river and the upstream sewer population equivalent. Neither the Formula A nor the SDD approach can be directly related to compliance with receiving water standards. The last decade has seen a progressive development in technical know-how and cost-effective planning and evaluation tools for use by the UK water industry. The problems are now being addressed through the planning framework provided by the Urban Pollution Management (UPM) Manual procedure. This procedure has enabled the environmental regulators and dischargers to address a backlog of improvements to WTPs and CSOs.
机译：从历史上看，英国的下水道联合溢流（CSO）设计为以下水道中干燥天气流量的固定倍数排放，通常为6 x DWF。超过6 x DWF的流量将被溢出，其余的将被带到废水处理厂（WTP）。这种实用主义方法引起的问题早在1960年代就得到了认可，当时提出了一种新方法“公式A”，用于计算来自CSO的可接受的向前流动。仍将其用作最低CSO泄漏设置标准。在1960年代，采用了新的溢流设计，以保留下水道中的污染，例如使用存储设施，池塘静水或溢流堰溢流。 1970年代后期开发了一种估计存储需求的方法。称为SDD方法，它基于公式A泄漏阈值，以及与河流中可用稀释度和上游下水道人口当量有关的CSO中的存储量。公式A或SDD方法都不能直接与遵守接收水标准相关。在过去的十年中，英国水行业使用的技术诀窍和具有成本效益的规划和评估工具取得了长足的发展。现在，通过《城市污染管理》（UPM）手册程序提供的规划框架来解决这些问题。该程序使环境监管者和排放者能够解决积压的WTP和CSO积压问题。

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