By filtering and decanting separated a large percentage of suspended solids (FIG. 1). Wastewater will to a SBR tank (FIG. 2) where Ammonia (FIG. 3) is added, and precipitate hydrous oxides of magnesium, chromium, manganese, iron and mercury. After the filter had by iron filings (FIG. 4). Subsequently waste water and ammonia to the tank take stirring and heating (FIG. 5) that will drive recovered ammonia (FIG. 6) to the initial deposit (FIG. 3). It is moved to reactor water absorption (FIG. 7) is bubbled CO {sub, 2} (FIG. 8), to form carbonates of metals in solution. This residual water had diatomaceous filter (FIG. 9) to retrieve and submit carbonates formed to a reverse osmosis (FIG.10) having irrigation water (FIG. 11).
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