CIVILICA We Respect the Science
(ناشر تخصصی کنفرانسهای کشور / شماره مجوز انتشارات از وزارت فرهنگ و ارشاد اسلامی: ۸۹۷۱)

Biogas production yield of anaerobic baffledreactor in low pH and HRT

عنوان مقاله: Biogas production yield of anaerobic baffledreactor in low pH and HRT
شناسه (COI) مقاله: ECONF02_232
منتشر شده در دومین همایش سراسری محیط زیست، انرژی و پدافند زیستی در سال 1393
مشخصات نویسندگان مقاله:

Shervin Jamshidi
Morteza Khalesidoost

خلاصه مقاله:
The purpose of this research is to examine the performance of anaerobic baffled reactor (ABR) in two different operational conditions with focus on biogas production. For this purpose, a pilot with 6 compartments, having overall net volume of 60 liters, was used and inoculated continuously with dairy wastewater. After start-up, the average COD removal efficiency of instantaneously. The experimental results show that the COD removal efficiency and biogas production yield were reduced dramatically about 46 and 82%, respectively. As a consequence, theM:C ratio was dramatically decreased to 0.14. It can be concludedthat ABR with 6 compartments is rather a robust technology for dairywastewater treatment and biogas production in low HRTs. However,it seems more susceptible to pH reductions. Therefore, for a wellenergy recovery, it obviously requires an equalization or pretreatmentunit as neutralization82% was achieved for 36 hours hydraulic retention time (HRT). Infirst step, by decreasing HRT to 18 hours, the overall COD removalefficiency and total biogas production yield were reduced 5 and 24%,respectively. Here, the ratio of methane to carbon dioxide content ofbiogas was reduced from 1.6 to about 1.14. In the second step, inHRT of 18 hours, the influent pH was reduced below 6

کلمات کلیدی:
Anaerobic baffled reactor (ABR), Biogas, DairyWastewater, hydraulic retention time, pH, Operation

صفحه اختصاصی مقاله و دریافت فایل کامل: