Studies on PAIWW treatment are scarce, despite its great volume and impact. The integration of neutralization and membrane processes for treating PAIWW has been of growing interest in recent years. Battistoni et al. suggested that membrane filtration processes are the only treatment methods that are able to meet regulatory requirements, despite their complex multistage structure, operational problems (due to scaling), and high costs. In examining pre-treatment methods, they concluded that the optimal pre-treatment step involves the use of Ca(OH)2 for neutralization and gypsum precipitation; in testing with additional nanofiltration and RO filtration steps in a pilot facility, the process achieved a limited quantity of permeate with increased treatment cost. Similarly, Al-Harahsheh et al. applied selective neutralization-precipitation pre-treatement involving the addition of Ca(OH)2 (as also reported by Gouider et al. ). Nevertheless, there remains a lack of highly circular processes that maximize resource recovery while minimizing environmental risk. Innovative integration and modification of mature technologies may promote advanced treatment processes that are applicable to PAIWW and other industrial WWs, as described in this contribution. to each process stream. The process recovers H2SO4, clean water, and P while reducing wastewater volume by 93%. The remaining brine is not acidic and can be reused as process water or further treated by evaporation.