Management and reuse of human urine as fertilizer in corn plants

Abstract

This article represents the bioassay results made, as test of the recollection, treatment an application of human urine as an organic fertilizer in corn plants to determine effects. The results and learned lessons of the bioassay indicate that with the storage of the urine it reaches levels of pH higher than eight 8, witch eliminate the possible presence of any pathogen, and is separated it is a source of concentration of nitrogen (N) 3.00-7.00 g / L, phosphorus (P) 0.20-0.50 g / L and potassium (K) 0.90-4.88 g / L. When the urine witch corresponds to a one percent of the sewage waters we determined the impact of all ready said before. Analyzing the following parameters biochemical oxygen demand (DBO5), oxygen chemical demand (DQO), nitrogen (N), phosphorus (P). The urine contributes 7.11% in biochemical oxygen demand (DBO5), 9.67% in oxygen chemical demand (DQO), 9.35% nitrogen (N) and 16.37% phosphorus (P) in the sewage waters.