Kosińska K, Miśkiewicz T
Institute of Environmental Protection, Division in Wroclaw, Wrocław, Poland.
Bioresour Technol. 2009 Jan;100(1):86-90. doi: 10.1016/j.biortech.2008.06.025. Epub 2008 Jul 22.
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).
一个带有生物质循环的30升厌氧生物反应器用于持续降低废水中的硫酸盐含量，并持续去除废水中的化学需氧量（COD）。该废水来自一家工业养猪场的废水，添加了硫酸亚铁（FeSO₄·7H₂O），这是一种黑色冶金的废品。废水中硫酸盐和COD的浓度分别为2.73克/升和3.15克/升。水力停留时间（HRT）在10至1.7天之间时，硫酸盐和COD的降低程度分别达到了98%和88%。当HRT进一步缩短时，硫酸盐和COD的降低效率下降。通过改进的Stover-Kincannon模型计算得出，两种污染物的最大去除速率常数分别为80.9克COD/（升·天）和41.8克SO₄²⁻/（升·天），饱和常数分别为91.582克COD/（升·天）和42.398克SO₄²⁻/（升·天）。
