کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
680128 1459964 2015 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Toward energy-neutral wastewater treatment: A high-rate contact stabilization process to maximally recover sewage organics
ترجمه فارسی عنوان
به سمت تصفیه فاضلاب خنثی انرژی: یک فرایند تثبیت کننده با سرعت بالا برای به حداکثر رساندن آلودگی فاضلاب
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تکنولوژی و شیمی فرآیندی
چکیده انگلیسی
The conventional activated sludge process is widely used for wastewater treatment, but to progress toward energy self-sufficiency, the wastewater treatment scheme needs to radically improve energy balances. We developed a high-rate contact stabilization (HiCS) reactor system at high sludge-specific loading rates (>2 kg bCOD kg−1 TSS d−1) and low sludge retention times (<1.2 d) and demonstrate that it is able to recover more chemical energy from wastewater organics than high-rate conventional activated sludge (HiCAS) and the low-rate variants of HiCS and HiCAS. The best HiCS system recovered 36% of the influent chemical energy as methane, due to the combined effects of low production of CO2, high sludge yield, and high methane yield of the produced sludge. The HiCS system imposed a feast-famine cycle and a putative selection pressure on the sludge micro-organisms toward substrate adsorption and storage. Given further optimization, it is a promising process for energy recovery from wastewater.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioresource Technology - Volume 179, March 2015, Pages 373-381
نویسندگان
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