Case: Overflow from drainage systems

Used equipment:

The challenge:

Overflow registration and reporting

There is a increasing problem of overflow from the common sewer systems. The number of incidents where rain-induced discharges burden streams with, among other things, organic matter must be closely monitored in order to be able to assess whether in the future there is a need to sharpen efforts to further reduce the number of incidents. It is important that overflows from sewers are mapped to a sufficient level to demonstrate whether the given discharge permits are being met. Besides that, the purpose of the mapping of rain-related overflows, is to obtain a clear basic knowledge of the amounts of water and matter that are discharged from the individual overflow structures. (cf. DHI Best Practice for mapping and reducing overflows from shared sewer systems)

The solution:

Over several years, Danova has developed a battery-powered data logger for this purpose, which collects data and, can automatically report, the number of overflows, the duration and the amount. In addition, external sensors can be connected to register the substance to be measured. On the data server, you can configure a report that contains the data and measurement points you want to be included in an automatic generated report.

D-Eye has been developed to supplement the measurements in the overflow, with a picture of the overflow event itself. It is now possible to get a picture of the overflow when it happens, as well as to log on to the logger itself and take a picture of the overflow structure when you want. Eg. before sending out employees to clean the overflow and grates.

The first customer:

Frederikshavn Forsyning A/S, was the first to have the system installed in 4 strategic locations. Frederikshavn Forsyning A/S chose to have Danova install the flow meters and at the same time set up the data registration on – Danova’s online data system. Read more about the online system HERE