The pretreatment with enhanced coagulation and a UF membrane for seawater desalination with reverse osmosis

Purification of industrial and waste water using matrix-isolated nanocomposite flocculant-coagulants

“…В этом случае коагуляция с квасцами оказалась более эффективной для удаления кремнезема, чем хлорид железа. Коагуляция и ультрафильтрация также успеш-но использовались для обработки солоноватой воды, чтобы избежать проблем с диоксидом кремния [13,14]. Были также изучены квасцы, хлорид железа и алюминат натрия для улучшения скорости удаления диоксида кремния в процессе очистки солоноватой водой [15].…”

A Review of Nanotechnology Application for Seawater Desalination Process. SOIJST Vol. 1 (1):155-179

“…However, coagulation as a pretreatment for desalination process needs a suitable coagulant, optimal dosage, and coagulation strategies for a successful process. A study conducted by Ma et al showed that using potassium polymer ferrate (VI) as a coagulant and pre-oxidant prior to ultrafiltration cause an increase to algae and microbial removal up to 98% and therefore reducing the biomass formed on RO membrane (Ma, et al, 2007).…”

“…Figure 2. SEM of the RO surface of biosorption formation: (a) adsorption of organic matter onto the RO surface; (b) growth of organic matrix and inorganic biosorption on the organic matter; (c) growth of the biomass (Ma, et al, 2007).…”

A Large Review of the Pre Treatment

“…The primary goal of inline coagulation (Qin et al,2006) is stabilization of the dead-end UF process between 2 chemical cleanings. Dosing of some ppm's coagulant is stabilizing the dead-end filtration process resulting in a slowly rising resistance-profile in time (Maa et al,2006;Liang et al,2008;Chen et al/,2007;Knox-Holmes et al,1994). A recent study by Villacorte (Villacorte et al,2009) reported significant amounts of TEP in the raw water and after MF/UF pre treatment.…”