SURFACE DRAINAGE SYSTEM Russian patent published in 2025 - IPC E03F1/00 

FIELD: water disposal.

SUBSTANCE: system comprises a waste water transportation unit containing a drainage network, an overflow pipeline, an additional sewage well, an additional pipeline and an emergency overflow device configured to operate at a water level above the critical value at the control point. Drainage network is made of a set of n sections containing a pipeline, inlet and outlet sewer wells, connected to the network so that the input and output sewage wells are connected to each other by only one pipeline of the i-th section, and the output sewage well of the i-th section is either the final one in the drainage network, or the input sewer well of the k-th section, i=1, 2, …, n, k=1, 2, …, n, k≠i. Emergency overflow device is made in the form of the kk-th section of the drainage network with a pipeline diameter D_kk≤D^r_kk, kk=1, 2, …, n, D^r_kk is the pipeline design diameter. Overflow pipeline connects the inlet sewage well of the emergency overflow device with an additional sewage well, and the additional pipeline connects the additional sewage well with the outlet sewage well of the emergency overflow device. Overflow pipeline is connected to the inlet sewer well of the emergency overflow device at a mark depending on the fixed mark of the water level at the control point. Control point is located in the inlet sewage well of the kkk-th section, for which the difference between the level of the ground surface and the maximum water level in it is minimum, and the critical value of the water level at the control point is located below the maximum water level. Fixed mark is located at the same height as the critical water level. System is additionally equipped with a surface pond located above the control point, having an inlet device made in the form of a coarse filter, which is connected to an inlet sewage well of the kkk-th section.

EFFECT: wider field of application is provided.

1 cl, 2 dwg