Integration of immersed membrane ultrafiltration with coagulation and activated carbon adsorption for advanced treatment of municipal wastewater

Dialynas, Emmanuel; Diamadopoulos, Evan

doi:10.1016/j.desal.2007.11.020

Cited by 43 publications

(23 citation statements)

References 14 publications

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“…Matsui et al [34] found that both physically reversible and irreversible membrane fouling were reduced by a combination of PAC and polyaluminum chloride (PACl) pretreatment, because of a high NOM removal and the formation of larger and more porous flocs. Dialynas and Diamadopoulos [35] found that after the addition of PAC to a coagulation-UF system, the trans-membrane pressure increased rapidly due to the formation of the PAC cake on the membrane surface, but there was a high degree of organic matter removal.…”

Section: Introductionmentioning

confidence: 99%

Investigation of pre-coagulation and powder activate carbon adsorption on ultrafiltration membrane fouling

et al. 2014

Journal of Membrane Science

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a b s t r a c tPre-coagulation by alum before ultrafiltration without (CUF) and with (CAUF) powdered activated carbon (PAC) addition was investigated to explore the influence of PAC on membrane fouling. It was found that the continuous addition of a low dosage of PAC reduced membrane fouling for operational run periods o20 days, both for reversible and for irreversible components of fouling. The presence of PAC increased the removal of dissolved organic matter (DOM), particularly proteinaceous substances, and some fractions of humic-type substances. For a longer operation time (420 days) an increase in mainly reversible fouling was evident and was attributed to microorganism growth in the cake layer, as indicated by the enhanced concentrations of extracellular polymeric substances, such as polysaccharides and proteins. A process of crystallization of the coagulant floc in the cake layer with increasing operation time was believed to cause desorption of DOM from primary coagulation particles and a decrease in their size, and consequently a higher density of cake layer. PAC absorption of desorbed DOM within the cake layer, and residual DOM after coagulation, reduced DOM reaching the membrane surface and the extent of subsequent internal membrane fouling.Crown

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Section: Introductionmentioning

confidence: 99%

Investigation of pre-coagulation and powder activate carbon adsorption on ultrafiltration membrane fouling

et al. 2014

Journal of Membrane Science

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“…Although, activated carbon, either in granular or powdered form, is commonly used for the adsorption of organic (32)(33)(34) and inorganic matter (35)(36)(37) in wastewaters, we have not found a single article on immobilization of heavy metals with this adsorbent in industrial sludges.…”

Section: Sludge Inertisation With Powdered Activated Carbonmentioning

confidence: 82%

Inertisation of galvanic sludge with calcium oxide, activated carbon, and phosphoric acid

Oreščanin¹,

Mikelić

Kollar

et al. 2012

Archives of Industrial Hygiene and Toxicology

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In this study we compared three methods for the treatment of electroplating sludge highly loaded with zinc and iron: (1) calcium oxide-based solidifi cation/stabilisation; (2) conversion into inert material by adsorption of organic and inorganic pollutants onto activated carbon; and (3) conversion of mobile waste components into insoluble phosphates. All three methods proved highly effi cient in the conversion of hazardous waste into inert material. Under optimum treatment conditions zinc concentration in the leachate of solidifi ed waste was reduced by 99.7 % compared to untreated sludge. Zinc retention effi ciency in the waste treated with activated carbon and phosphoric acid was 99.9 % and 98.7 %, respectively. The advantages of electroplating sludge treatment with activated carbon over the other two methods are high sorption capacity, insignifi cant pH and volume changes of the sludge, and simple use.

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“…Generally, powdered activated carbon (PAC) was better than granular activated carbon in terms of adsorption kinetics and thermodynamics [16][17][18]. But PAC cannot be used in a traditional column operation and there is a problem in separating PAC from liquid.…”

Section: Introductionmentioning

confidence: 99%

Reverse osmosis concentrate treatment by a PAC countercurrent four-stage adsorption/MF hybrid process

Wei

Zhang

2014

Desalination

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Integration of immersed membrane ultrafiltration with coagulation and activated carbon adsorption for advanced treatment of municipal wastewater

Cited by 43 publications

References 14 publications

Investigation of pre-coagulation and powder activate carbon adsorption on ultrafiltration membrane fouling

Investigation of pre-coagulation and powder activate carbon adsorption on ultrafiltration membrane fouling

Inertisation of galvanic sludge with calcium oxide, activated carbon, and phosphoric acid

Reverse osmosis concentrate treatment by a PAC countercurrent four-stage adsorption/MF hybrid process

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