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

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).

[Serum C-reactive protein monitoring in children after injuries of closed body cavities]. / Monitorowanie bialka C-reaktywnego w surowicy krwi u dzieci po urazach zamknietych jam ciala.

Serum CRP-level monitoring was performed in 101 children after trauma of occlude body cavities to determine its applicability in diagnostic procedure, treatment and prognosis. Case history of a patient, clinical status, type and course of treatment provide the basis for establishing clinical punctation in each group of injury for statistical purposes. As many as 87 children with head trauma, 5 having abdominal trauma, 8 with traumatized heads and abdomens, and 1 with chest injury were investigated. All the studied groups revealed similar graph of CRP levels. Until the third day after injury, dynamic rise was being observed followed by slower elimination phase proceeding to the initial level on the seventh day after the injury. Dynamics of CRP outputs and their positive correlation with the area under the curve in all groups investigated shows that CRP monitoring is useful for clinical purpose.