کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
683825 889007 2009 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Influences of organic loading disturbances on the performance of anaerobic filter process to treat purified terephthalic acid wastewater
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تکنولوژی و شیمی فرآیندی
پیش نمایش صفحه اول مقاله
Influences of organic loading disturbances on the performance of anaerobic filter process to treat purified terephthalic acid wastewater
چکیده انگلیسی

A lab-scale anaerobic filter process was operated for the treatment of purified terephthalic acid (PTA) wastewater, and the influences of organic loading disturbances on the process performance were investigated. After about 15 month operation, the COD removal efficiency was maintained at 79% under the volumetric loading rate of 5.05 kg-COD/m3/d and the hydraulic retention time (HRT) of 50 h. Interestingly, this performance could be further enhanced over 85% by applying a step-increase/decrease of the HRT, which was mainly due to the increased p-toluate degradation. In the shock loading tests of four major pollutants (benzoate, acetate, terephthalate and p-toluate), it was found that the overall process performance was adversely affected by all the shock loadings, indicating that the syntrophic microbial consortium involved in the PTA wastewater treatment is highly sensitive to the organic loading disturbances. The complex inhibition effects of the benzoate and acetate on the terephthalate and p-toluate degradations were mainly responsible for this sensitivity.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioresource Technology - Volume 100, Issue 8, April 2009, Pages 2457–2461
نویسندگان
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