Evaluation of coagulation and PAC adsorption pretreatments on membrane filtration for a surface water in Korea: A pilot study

Effect of PAC addition on immersed ultrafiltration for the treatment of algal-rich water

“…Membrane filtration technology is a promising alternative to conventional water treatment processes for the removal of algae, since it offers an absolute removal of the algal cells and is less affected by raw water quality changes [11,12]. However, membrane fouling is still a major obstacle for the wider application of the membrane filtration technology.…”

Removal of geosmin and 2-methylisoboneol (2-MIB) by membrane system combined with powdered activated carbon (PAC) for drinking water treatment

“…The enhanced organic compounds removals by the PAC addition in membrane process for drinking water treatment were commonly reported [10][11][12]. Campos et al [13,14] and Chang et al [15] developed adsorption model for PAC-membrane processes and these model were verified by applying to PAC-membrane system with natural and synthetic water matrix.…”

“…Previously published approaches have been of two types: (1) PAC of high concentration is added as a pulse input into the membrane reactor and discharged from the tank as the concentrate [10]; and (2) PAC is injected into the PAC contactor to prolong the retention time of PAC in the system as it travels with treated water into subsequent submerged membrane tank [11]. Since the general recovery rate of single submerged membrane process is 90%, PAC is easily discharged from the system along with the concentrate of the membrane process.…”

Effect of Water pH on Coagulation Process Efficiency with Powdered Activated Carbon

“…czesne stosowanie koagulacji i adsorpcji okazało się skuteczne przede wszystkim w usuwaniu substancji organicznych [3][4][5][6]. Odpowiednio prowadzone procesy mogą zapewnić również usuwanie jonów metali ciężkich [7,8].…”

“…Dlatego ważne jest prowadzenie badań na rzeczywistych wodach, zawierających wszystkie składniki w nich występujące. Najczęściej wykorzystywanym koagulantem na stacjach uzdatniania wody w Polsce jest siarczan glinu Al 2 (SO 4 [9]. Polikationowe produkty wstępnej hydrolizy glinu po dodaniu chlorków poliglinu do oczyszczanej wody zdecydowanie wolniej ulegają hydrolizie do Al(OH) 3 niż glin obecny w roztworze siarczanu glinu.…”