the occurrence and fate of trace-level contamination of pharmaceuticals in the aquatic environment has been recognized as one of the emerging issues in environmental chemistry. the effluents of wastewater treatment plants, usually directly emitted to the environment, often contain the anti-inflammatory drug diclofenac. diclofenac was chosen because it is of high consumption; by background liter...

-In this paper, a low-order linear timeinvariant (LTI) state-space model that describes the nitrate concentrations in both anoxic and aerobic zones of an activated sludge wastewater treatment plant (WWTP), for biological treatment of municipal sewage, is identified around a given operating point (a model with lumped parameters). Several subspace identification methods, such as CCA, N4SID, MOESP...

The affordable and effective treatment of wastewater is critical issue for the developing countries. Various conventional treatment techniques; both biological and nonbiological are being tried. Disposal of domestic sewage of about 29000 MLD from cities and towns is a biggest source of pollution of water bodies in India. Chemical oxygen demand is the amount of oxygen required for the organic ma...

The aim of this study was to assess the toxicity sewage sludge from municipal treatment plant in Bialystok. Raw sewage, primary settling tank, activated sludge, before fermentation chamber, recirculated and after dehydration on press were tested. Microtox Model 500 kit using Aliivibrio fischeri luminescent bacteria used for analyzes. EC50 index (indicating concentration toxic substances resulti...

I wi Brou t t Bowrr. Corporare Rescwc-li CRB. CH-.The performance of highly doped SnO, anodes for the oxidative treatment of biologically refractory ~ a s t e water was compared with PbO, and Pt. The oxidation of a wide range of organic compounds proceeds with a n efficiency which is about 5 times higher than with platinum anodes. The oxidation efficiency was found to be independent of the pH o...