Upgrade of deep bed filtration with activated carbon dosage for compact micropollutant removal from wastewater in technical scale

Electroflotation extraction of carbon material powders in the presence of metal ions

“…Forming of large and dense flakes during additional introduction of flocculants and coagulants in solution has a serious influence on particles deposition in the process of sedimentation [11]. Coagulant concentration in purification plants at large production facilities can reach in this case the range from 1 g/m 3 [8] to 10 g/m 3 [7,12]. The effect of coagulant nature on the process efficiency is noted in the work [13].…”

“…Activated coals (AC) are widely used in different scientific branches as carbon sorbents; among other applications, they are used in technological processes of adsorption purification, separation, extraction and concentration of various substances in gaseous and liquid media [1][2][3][4][5]. Waste water processing by carbon sorbent directly in the volume of processed liquid is one of the efficient methods of water purification [6][7][8][9][10]. However, use of this method is complicated due to the problems of consequent carbon sorbent separation from purified water.…”

Fast empirical lab method for performance projections of large-scale powdered activated carbon re-circulation plants

“…Adsorption onto powdered activated carbon (PAC) as an advanced step for the removal of organic micro-pollutants (OMPs) is currently being integrated into an increasing number of wastewater treatment plants (WWTPs) in several countries like Switzerland (Boehler et al 2012), France (Mailler et al 2015), and Germany (Metzger 2010). Among different design options the most simple ones are (option A) dosing PAC directly into existing secondary treatment steps/biology (Boehler et al 2012;Evers et al 2017) or (option B) into secondary effluents/rapid filtration influents Altmann et al 2015a;Altmann et al 2015b;Loewenberg et al 2016). A more complex option (C) is to build additional tertiary contactor basins which receive secondary effluent and which are followed by tertiary sedimentation/rapid filtration, with re-circulation of the PAC sludge (Garland & Beebe 1970;Nicolet & Rott 1999;Metzger 2010;Boehler et al 2012;Margot et al 2013;Mailler et al 2015;Meinel et al 2016a;Evers et al 2017;Karelid et al 2017a).…”

A pilot‐scale deep bed denitrification filter for secondary effluent treatment using sodium acetate as external carbon

“…Therefore, restricting the entry of nitrogen into rivers and lakes is important to prevent eutrophication of lakes and rivers. Municipal water resource recovery facilities (MWRRFs) have been regarded as the most crucial part of modern water pollution control; however, many developed countries and regions have recognized their limitations in removing various pollutants as MWRRF effluent is still a potential source of water pollution (Lowenberg et al., ). In China, the allowable nitrogen and phosphorous concentrations under the most stringent standards for pollutant discharge from MWRRFs (GB18918‐2002 1A) far exceed those of the Class III‐IV Environmental Quality Standards for surface water (GB3838‐2002) (MOEP, ) (Table ).…”