Environmental Engineering Department, Istanbul Technical University, ITU, Insaat Fakultesi, 34469 Maslak, Istanbul, Turkey.
Bioresour Technol. 2011 May;102(10):5589-95. doi: 10.1016/j.biortech.2011.01.086. Epub 2011 Mar 5.
Synthetically prepared wastewater originating from the H-acid (4-Amino-5-hydroxy-2,7-naphthalene disulfonic acid) manufacturing process was subjected to respirometric analysis for evaluating the level of achievable biodegradation in the presence of this commercially important azo dye precursor. For this purpose, H-acid was mixed with synthetic substrate having the same characteristics as sewage at a concentration and composition being typical for H-acid manufacturing wastewater. Experimental results indicated that H-acid was not biodegradable under activated sludge treatment conditions even after prolonged acclimation periods. The results were also confirmed by model evaluation of oxygen uptake rate profiles. H-acid also did not inhibit the biodegradation of synthetic sewage but accumulated as soluble inert COD in the treated wastewater.
合成制备的废水来源于 H 酸（4-氨基-5-羟基-2,7-萘二磺酸）的制造工艺，进行呼吸分析以评估在存在这种商业上重要的偶氮染料前体的情况下可实现的生物降解水平。为此，将 H 酸与具有与污水相同特性的合成基质混合，其浓度和组成与 H 酸制造废水典型。实验结果表明，即使经过长时间的驯化期，H 酸在活性污泥处理条件下也不可生物降解。通过对耗氧速率曲线的模型评估也证实了这一点。H 酸也没有抑制合成污水的生物降解，但作为可溶惰性 COD 在处理废水中积累。
