Flue gas desulfurization (FGD) wastewater is characterized by low pH, high content of hardness ions and COD.In this work, chemical precipitation and ultrafiltration (UF) membrane separation were corporately coupled to treat the FGD wastewater on a lab scale to remove the hardness as well as some organic compounds for further advanced treatment.Firs

This article describes a mathematical model of a horizontal wind turbine of 500 W with a NACA 2418 airfoil type during the start-up condition for two proposed systems.The first one considers a wind turbine system where the friction moment is given by ball bearings.The second one proposes the replacement of the ball bearings by magnetic bearings cal

Shotcrete often has the disadvantages of high rebound rate and serious construction loss.By optimizing the mix ratio of shotcrete, and considering the three factors of water-cement ratio, sand ratio and cementitious material content, this paper designs the Mens Belt orthogonal test to investigate the influence of the three factors on the rebound ra

The aim of the research was to determine the number and distribution of the Rufous-banded Owls Ciccaba albitarsis in a Phone Cases cloud forest on the northern slopes of the Andes.The study was performed using the territory mapping technique and a GPS device in an area of 7 km2.The number of territories was estimated at 40, resulting in a density o