Hydro-geophysical characterization and performance evaluation of natural wetlands in a semi-arid wastewater irrigated landscape.

摘要: Abstract Natural wetlands are green infrastructure systems that energy-efficient for wastewater treatment and can be found in diverse geo-environmental settings around the world. Their structure functions, which defines efficiencies highly varied. Wetlands over shallow bedrock geological lineaments (weak zones) have been known to contribute groundwater contamination. However, not many studies performed understand different identify efficiency determining factors. Therefore, it is important investigate suitability of natural wetlands. We examined fed aiming at studying depth, geo-stability, bio-chemical interactions, hydrogeological attributes improve quality, within Musi River basin, India. The integrated geophysical scans encompassing electrical resistivity tomography (ERT), test, bathymetric study hydro-chemical analysis were carried out explore physical hydro-dynamic processes ERT investigations showed that, depth up 20–25 m devoid geo-fractures (lineaments) indicated effective saturated zone as a passable scope potential implying proportionality deep seated (deep bedrock) wetland pollutant removal efficiency. lower order range 10–35 Ωm hydraulic conductivity 2.938 md−1 acquired weathered catalyzing bioremediation, sedimentation, adsorption, redox reactions ion exchange processes. It caused removing nitrate 194.34 kgd−1 (97.18%); sulphate 333.75 kgd−1 (77.70%); phosphate 9.66 (82.53%); microbes 99.99%, BOD 80%, COD 80% load with discharge 1408 m3d-1 treated wastewater. Further, strategies designating also discussed this paper.