臭氧破解对剩余污泥性质的影响研究

A Study on the Effects of Ozonic disintegration on the Characteristics of Waste Activated Sludge

为系统研究臭氧破解污泥后对活性污泥的影响,在活性污泥中通入臭氧进行污泥破解静态实验。结果表明,活性污泥进行臭氧破解后,污泥溶液中的SCOD、TN、NH3-N和TP随着臭氧投加量的增加都有不同程度的溶出,其中SCOD在臭氧投加量(O3/ss)为0.12 g/g时浓度从13.7 mg/L上升到433.7 mg/L、TN在臭氧投加量(O3/ss)为0.08 g/g时质量浓度从6.97 mg/L上升到13.92 mg/L、NH3-N在臭氧投加量(O3/ss)为0.1 g/g时质量浓度从0.23 mg/L上升到14.41 mg/L、TP在臭氧投加量(O3/ss)为0.1 g/g时质量浓度从1.01 mg/L上升到14.77 mg/L;污泥破解后,污泥溶液中的pH值随臭氧投加量增加逐渐降低,但降低幅度不大。

Static experiments were carried out to study the effects of ozonic disintegration characteristics of waste activated sludge. The results showed that the concentration of SCOD,TN,NH3 -N and TP increased at different levels with the increasing ozone dose after disintegration by ozonic treatment. The concentration of SCOD,TN,NH3 - N and TP increased from 13.7 mg/L to 433.7 mg/L,6.97 mg/L to 13.92 mg/L,0.23 mg/ L to 14.41 mg/L, 1.01 mg/L to 14.77 mg/L respectively when the ozone doses were 0.12 g/g（O3/ss） ,0.08 g/g（O3/ss） ,0.1 g/g（O3/ss） ,0.1 g/g（ O3/ss） respectively. The pH value of the sludge reduced gradually with the increase of the ozone dose.