in this research feasibility study of using sewage sludge as an adsorbent for the removal of acidblue 25 dye was carried out. sewage sludge was first dried in an oven at 105° c for 24 hours. then the driedsludge was washed with hcl (98%) for two hours and then with distilled water to a ph of approximatelyneutral. then, it was carbonated and activated in a nitrogen-based electric furnace at 600c...

In reactor furnace, due to high temperature and high pressure, data can be measured only near the furnace wall. In this paper, the way to estimate temperature distribution in a reactor furnace using measured data near the furnace walls and to control temperature distribution to the desired temperature distribution was studied. In the estimation, SQP method is employed using measured data near t...

This paper deals with thermal drying of wastewater sludges, whose management will become crucial in the forthcoming years. Sludges collected after mechanical dewatering in 5 different WWTPs are submitted to the same convective drying treatment in order to try finding some relations between the drying behaviours, the type of effluent and wastewater treatments. Results show dearly sludge drying r...

In the oxygen-enriched side-blown smelting furnace for treatment of electroplating sludge, fluent was used to simulate gas–liquid two-phase flow process. The relationship between lance diameter, inclination, bath depth, and evaluation indicators were studied, oxygen spacing optimized. results show that high velocity gas rate areas near lance, while stirring dead zones with low appeared in centr...