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We characterize spin wave propagation and its modification by an electricalcurrent in Permalloy(Py)/Pt bilayers with Py thickness between 4 and 20 nm.First, we analyze the frequency non-reciprocity of surface spin waves andextract from it the interfacial Dzyaloshinskii-Moriya interaction constant$D_s$ accounting for an additional contribution due to asymmetric surfaceanisotropies. Second, we measure the spin-wave relaxation rate and deduce fromit the Py/Pt spin mixing conductance $g^{\uparrow\downarrow}_{eff}$. Last,applying a \textit{dc} electrical current, we extract the spin Hallconductivity $\sigma_{SH}$ from the change of spin wave relaxation rate due tothe spin-Hall spin transfer torque. We obtain a consistent picture of the spinwave propagation data for different film thicknesses using a single set ofparameters $D_s=0.25$ pJ/m, $g^{\uparrow\downarrow}_{eff} = 3.2\times 10^{19}$m$^{-2}$ and $\sigma_{SH}=4\times10^{5}$ S/m.

Determining key spin-orbitronic parameters by means of propagating spin waves