Experimental Study on the Plasticizer Wastewater Treatment by UASB-A/O Process

Abstract:

Plasticizer wastewater of high concentration was experimentally studied by the process of pretreatment of acidification demulsion and Fe-C micro-electrolysis and combined process of UASB and A/O aiming at the COD_Cr removal in this work. The result showed that the COD_Cr removal rate of pretreatment process arrived at 56.2% after Fe-C micro-electrolysis reaction of 160 min on the optimal condition of pH 3.5 of acidification demulsion and 1:1.2 of the Fe/C ratio, and meanwhile improved the biodegradability of wastewater. On the other hand, UASB-A/O process could afford 80~85% of the COD_Cr removal rate under the optimized condition of temperature 30~35 °C, HRT 48h, pH 6.5 for UASB and HRT of aerobic zone 10~12 h, DO of about 3mg/L for A/O basin. The whole system could run at the total COD_Cr removal rate of 94.53~96.36%, and the system effluent COD_Cr was 500 mg/L or less.

• Periodical: Advanced Materials Research (Volumes 955-959)
• Pages: 2574-2580
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.955-959.2574
• Online since: June 2014
• Authors: Zhi Yong Yu, Jia Ze Bao*, Jian Guo Jiang, Wu Sheng Ma, Jin Yao Yang
• Keywords: A/O, Acidification Demulsion, Fe-C, Plasticizer Wastewater, UASB

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