求翻译。。。

SBR activated sludge microorganisms proved to be more resistant to the variation of influent
phenol content than the corresponding CSTR population, presenting a high recovery rate and
a short time for the re-establishment of efficient operation. The addition of phenol might affect
the efficiency of both systems for the removal of organic matter. The influent COD content
and the corresponding effluent values for both reactors are presented in Figure 2b as a
function of operation time, while the corresponding BOD5 values are shown in Figure 2e.
The introduction of high influent phenol concentration did not affect the operation of the SBR
reactor, resulting in effluents of high quality: COD concentration varied from 270 to 550 mg l-1
(Fig 2b), corresponding to COD removal efficiencies from 87 to 95%, while BOD5 effluent
concentration varied from 60 to 152 mg l-1, corresponding to removal efficiencies from 95 to
98%. However, the addition of phenol in the CSTR greatly affected its performance: higher
COD values were measured in the CSTR effluent ranging from 295 to 1500 mg l-1, indicating
poor COD removal efficiencies of about 67 to 93%. In addition, BOD5 (Fig 2e) content in the