Degradation of nitroguanidine wastewater components in soil

摘要

AbstractThe degradation of nitroguanidine (NQ) wastewater components was studied using continuous‐flow and perfusion soil columns. After 271 d of operation of the continuous‐flow columns and 84 d of operation of the perfusion columns, only some components of NQ wastewater were completely or partially removed. Guanidine nitrate and sulfate were the most readily transformed. NQ, however, was only partially removed. Carbon supplements enhanced the transformation of both sulfate and NQ. Transformation products included nitrosoguanidine and ammonia, but not cyanoguanidine or melamine. Microbial adaptation to wastewater components was not demonstrated. Based on test data, land application of untreated wastewater is not recommen