臭氧投量对活性污泥特性参数的影响

Effect of Ozone Dosage on Characteristic Parameters of Activated Sludge

通过试验分析和探讨了臭氧投量对活性污泥特性参数的影响。结果表明，随着臭氧投量的增加，SS和VSS呈明显降低的趋势，而活性污泥上清液中的SCOD、蛋白质、总氮及硝酸盐氮则增加；氨氮浓度总体上随臭氧投量的增加而增加，但在投量为95～137mgO3／gSS时有所下降，随后又明显增加；当臭氧投量〈137mgO3／gSS时，亚硝酸盐氮呈增加趋势，随后开始明显降低；当臭氧投量〈211mgO3／gSS时，TOC和多糖随臭氧投量的增加而增加，随后开始下降。

The influence of ozone dosage on the characteristic parameters of activated sludge is discussed. The results show that with the increase of ozone dosage, SS and VSS are reduced while the SCOD, protein, TN and nitrate nitrogen in the supernatant of activated sludge are increased. Generally, the ammonia nitrogen concentration positively correlates with the ozone concentration, however, the ammonia nitrogen concentration declines when the ozone dosage is in the range of 95 to 137 mgO3/gSS. When the ozone dosage is below 137 mgO3/gSS, nitrite nitrogen is increased and decreased when exceeding this range. When the ozone dosage is below 211 mgO3/gSS, polysaccharide and TOC concentrations positively correlates with the ozone dosage, and are decreased when exceeding this range.