Performance of an anaerobic bioreactor with biomass recycling, continuously removing COD and sulphate from industrial wastes

Bioresource Technology
K Kosińska, T Miśkiewicz

Abstract

A 30-l anaerobic bioreactor with biomass recycling was used to provide a continuous reduction in sulphate and a continuous COD removal from wastewater, which consisted of the effluent from an industrial pig fattening farm, enriched with technical FeSO(4) x 7H(2)O, a waste product from ferrous metallurgy. The concentrations of sulphate and COD in the wastewater amounted to 2.73 g l(-1) and 3.15 g l(-1), respectively. The HRT (hydraulic retention time) of 10-1.7d produced an extent of sulphate and COD reduction which totalled 98% and 88%, respectively. When the HRT was further shortened, the efficiency of reduction in sulphate and COD decreased. The maximum removal rate constants for both the pollutants, calculated by means of a modified Stover-Kincannon model, were 80.9 g COD l(-1)d(-1) and 41.8 g SO(4)(2-)l(-1)d(-1), the values of the saturation constants being 91.582 g COD l(-1)d(-1) and 42.398 g SO(4)(2-)l(-1)d(-1).

References

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Citations

Aug 29, 2013·Journal of Environmental Management·He BaiYing Feng
Mar 31, 2012·Journal of Environmental Management·Sueli M BertolinoV A Leão
Nov 13, 2010·Bioresource Technology·Takahiro YamashitaJianqing Zhu
Jan 20, 2021·Waste Management & Research : the Journal of the International Solid Wastes and Public Cleansing Association, ISWA·Adoum Mahamat Ahmat, Yannick Mamindy-Pajany

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