Yes, it's a good idea, but it ...

Yes, it's a good idea, but it definitely requires a very large amount of money. There are more efficient ways to get clean water from any wastewater source. First, free the wastewater from all pollutants, both microorganisms and their carcasses and heavy metals, then decompose the remaining ammonia using turbolence techniques. this process is enough with a sand filter if you do it with my method (green ion).