Car wash wastewater treatment combination: A systematic review

Car wash wastewater is a source of water pollution. Processing car wash waste is crucial to prevent environmental pollution. In this issue, car wash treatment has the potential to sustain of clean water. However, the effective treatment of car wash wastewater is still being determined, complicated to solve, limited resource capabilities, inadequate surrounding environmental support, and very expensive processing costs. This systematic review paper aims to review the combination technology of car wash wastewater treatment systematically. A literature survey was conducted, and 11 research articles were found suitable for inclusion in the investigation, which extracted information, country of origin, and method used. The best 8 of 11 articles were removed as secondary data for writing this manuscript to be included in the analysis table. Studies on flocculation-column-flotation, coagulation-flocculation, ultra-microfiltration, coagulation-flocculation, electrocoagulation, sedimentation-filtration, filtration-ozonation, electrocoagulation-adsorption, and each n=1. This systematic review shows that ultrafiltration and microfiltration membrane treatment methods effectively remove pollutants from car wash wastewater.