Technical Difficulties and Strategies for Overflow Monitoring in Urban Drainage Systems
Overflow frequency is the key parameter to evaluate the overflow and rectification effect of drainage system.In order to improve the accuracy and stability of overflow frequency monitoring and reduce the cost of o-verflow monitoring,an overflow monitoring technology based on hydrodynamic principle was proposed.The technology uses the overflow water of the drainage system as the driving force to trigger the micro-mechanical switch and record the overflow frequency,overflow time and other parameters.It has the advantages of low energy consumption,low cost,low installation environment requirements and high equipment utilization rate,and can be applied to the overflow monitoring subsystem of the intelligent drainage system on a large scale.The technical route of hydraulic overflow monitoring is proposed,which consists of overflow event,equipment perception and comprehensive analysis,which provides data support for determining overflow pollution control objectives,over-flow rectification measures,water treatment facility scale and overflow rectification effect evaluation.
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