Effects of Heavy Metals on Activated Sludge ProcessWater Science and Technology - Tập 26 Số 3-4 - Trang 801-813 - 1992
Filiz B. Dilek, Ülkü Yetış
The purpose of this study was to evaluate the toxic effects of various heavy metals on activated sludge process. Different concentrations of Cu(II) (0.5, 1.0, 5.0, and 10.0 mg/l), Ni(II) (5.0, 10.0, 25.0 mg/l), and Cr(VI) (1.0, 5.0, 10.0, 25.0, 50,0 mg/l) were maintained in a laboratory-seale completely mixed activated sludge unit, without recycle, treating simulated wastewater. The feed s...... hiện toàn bộ
Aerobic biodegradation of gasoline oxygenates MTBE and TBAWater Science and Technology - Tập 43 Số 2 - Trang 277-284 - 2001
Gregory J. Wilson, Amy P. Richter, Makram T. Suidan, Albert D. Venosa
MTBE degradation was investigated using a continuously stirred tank reactor (CSTR) with biomass retention (porous pot reactor) operated under aerobic conditions. MTBE was fed to the reactor at an influent concentration of 150 mg/l (1.70 mmol/l). A second identical reactor was operated as a control under the same conditions with the addition of 2.66 g/l of sodium azide, to kill any biologic...... hiện toàn bộ
Progress in sensor technology - progress in process control? Part II: results from a simulation benchmark studyWater Science and Technology - Tập 47 Số 2 - Trang 113-120 - 2003
J. Alex, Leiv Rieger, Stefanie Winkler, Hansruedi Siegrist
To show the impact of sensor behaviour on the control result, four strategies for aeration control are tested using different sensor characteristics. It is demonstrated, on the one hand, how an increasing response time will limit the achievable control quality and, on the other hand, how a given sensor characteristic can be taken into account for the controller design. The presented tests ...... hiện toàn bộ