摘要：

通过投加PAC对驯化污泥的破坏性试验，研究了各浓度PAC对TTC-ETS、SOUR、AUR及COD去除率、TP去除率、氨氮去除率的影响，并测定水中残留的铝离子。结果表明，PAC投加量在0～60 mg/L时，对TTC-ETS和SOUR均有一定促进作用，COD及TP去除率达到或接近最大值。但随着PAC的增加，对TTC-ETS和SOUR呈现一定抑制作用，COD、TP的去除率也随之下降。不论PAC浓度高低，都会对AUR和氨氮的去除率产生一定的抑制。铝离子在水中的残留量会随着PAC投加量的增加而升高，但90%以上会被转移到污泥中排出。

关键词: 聚合氯化铝, 混凝剂, 微生物活性, 铝离子残留

Abstract:

By adding PAC for testing the destructiveness of acclimated sludge,the influences of PAC with different concentrations on TTC-ETS,SOUR,AUR,and the removing rates of COD,TP and NH₄⁺-N are investigated,and the residual aluminum ions in water determined. The results show that when PAC dosage is 0-60 mg/L,it has certain promoter effect on both TTC-ETS and SOUR,and the removing rates of COD and TP can reach or close to maximum values. However,with the increase of PAC,certain inhibitory effect occurs to TTC-ETS and SOUR,and the removing rates of COD and TP are decreased. No matter how high or how low the PAC is,it has inhibitory effect on the removing rates of AUR and ammonia nitrogen. The residual amount of aluminum ions in water can be increased with the increase of PAC dosage,but more than 90% of it can be transferred to the sludge and discharged.

Key words: poly aluminum chloride, coagulant, microbial activity, residue of aluminum ions

中图分类号: 

• X703