Hu Xiao-Bing, Rao Qiang, Tang Su-Lan, Jiang Jing, Xie Rui-Tao, Hao Wen-Jing, Zhong Mei-Ying
College of Architectural Engineering, Anhui University of Technology, Maanshan 243032, China.
Engineering Research Center of Water Purification and Utilization Technology Based on Biofilm Process, Ministry of Education, Maanshan 243032, China.
Huan Jing Ke Xue. 2016 Oct 8;37(10):3939-3948. doi: 10.13227/j.hjkx.2016.10.036.
In order to investigate the effects of phenol on activity and microfauna community structure of activated sludge, phenol with different concentrations were added into the wastewater for activated sludge culturing in a SBR reactor, then the activity parameters of TTC-ETS and INT-ETS of activated sludge were measured, and the dynamics of microfauna community was analyzed. The results indicated that TTC-ETS activity was more applicable to evaluate the effects of phenol on sludge activity than INT-ETS activity. The higher the concentration of phenol was, the more seriously the sludge activity was inhibited. When 50 mg·L of phenol was added into the influent, the inhibition rate of sludge activity was (20.75±10.43)%, while it increased to (39.73±26.92)% with a great fluctuation at the phenol concentration of 100 mg·L. The inhibition rate of sludge activity fluctuated at about 40% in the later period of sludge culturing with 300 mg·L of phenol. The inhibitory effects on microfauna community in activated sludge increased with increasing phenol concentration. Phenol had different effects on various groups of microfauna community, i.e., only one group (testate amoebae) was inhibited significantly at a low feeding concentration of phenol, many groups (sessile ciliates, testate amoebae, crawling ciliates, carnivorous ciliates) were inhibited at the phenol concentrations of 100 mg·L and 300 mg·L, whereas a few groups (flagellates, nematodes, etc.) were promoted at the phenol concentration of 300 mg·L. There was a certain degree of relationship between sludge activity and microfauna under the influence of phenol, which means that , etc., may be bio-indicators for low sludge activity, and and can be used as bio-indicators for high sludge activity in the activated sludge used to treat phenolic wastewater.
为研究苯酚对活性污泥活性及微型动物群落结构的影响，在序批式反应器（SBR）中向培养活性污泥的废水中添加不同浓度的苯酚，测定活性污泥的TTC-ETS和INT-ETS活性参数，并分析微型动物群落动态。结果表明，TTC-ETS活性比INT-ETS活性更适用于评价苯酚对污泥活性的影响。苯酚浓度越高，污泥活性受抑制越严重。当进水苯酚浓度为50 mg·L时，污泥活性抑制率为(20.75±10.43)%，而苯酚浓度为100 mg·L时，抑制率增至(39.73±26.92)%，且波动较大。在300 mg·L苯酚培养污泥后期，污泥活性抑制率波动在40%左右。苯酚对活性污泥微型动物群落的抑制作用随苯酚浓度升高而增强。苯酚对微型动物群落各群体的影响不同，即苯酚投加浓度较低时仅一组（有壳变形虫）受到显著抑制，苯酚浓度为100 mg·L和300 mg·L时多组（固着型纤毛虫、有壳变形虫、爬行型纤毛虫、肉食型纤毛虫）受到抑制，而苯酚浓度为300 mg·L时少数组（鞭毛虫、线虫等）受到促进。在苯酚影响下，污泥活性与微型动物之间存在一定程度的关系，这意味着 等可能是低污泥活性的生物指示物，而 和 可作为处理含酚废水的活性污泥中高污泥活性的生物指示物。
