| 摘要 |
<p>A method of making fertilizer from wastewater sludge includes drying sludge to 70%/30% water/solids, mixing 2.5% potash per ton of solids, and 5% anhydrous ammonia. Additionally, a method of making fertilizer can include obtaining farm animal waste, adding ammonia, and adding nitrogen, the nitrogen in embodiments being in the form of urea.</p> |
