Changing of Contaminants Content and Disperse State during Treatment and Transportation of Drinking Water

Abstract

Number concentration of colloidal particles and concentration of several drinking water contaminants (iron, aluminium, AOX) were determined in river water, water treated at WTP, tap water and their filtrates (pore diameter of filter 60 nm). It was shown that almost all AOX were present in highly disperse state (less than 60 nm), 55...90% of iron and 55...80% of aluminium belonged to impurities with size over 60 nm. Changes of contaminants state and concentration were explained by influence of water treatment processes and corrosion of steel water distribution pipes.

Modification of Wastewater Treatment Technology at Cottonseed Oil Plant

“…The next stage at the plant was coagulation treatment. For effective use of aluminum salts neutral reaction of water is preferable [7,9]. Therefore after flotation 140 -200 mg/L of Ca(OH) 2 was added to wastewater up to pH 7-8.…”

“…Many of them are also widely applied in treatment of other types of waters. For example, coagulation and filtration are used in treatment of drinking water [9,10], municipal wastewater [11,14], drainage water [15], separation and flotation are used in treatment of industrial wastewaters polluted with petroproducts [10,16,17].…”

A Review on Adsorbable Organic Halogens Treatment Technologies: Approaches and Application

“…UV/TiO 2 oxidation Dye wastewaters, pulp and paper mill wastes [6,160] UV/ozone oxidation process Wastewaters [161] Adsorption on activated carbon 4-chlorophenol, 4-bromophenol, 4-iodophenol, 2,4,6-trichlorophenol, landfill leachates [162][163][164] Biochar remediation Degradation of halogenated organics [165] Al(III) coagulation/carbon adsorption process Dye wastewaters [166] H 2 O 2 /UV oxidation Pharmaceutical wastes [65,76,167] Mechanochemistry Wastes [168,169] Thermally activated persulfate by microwave heating (S 2 O 8 2-/MW) Secondary waste sludge [170] Anionic exchanger DEAE-cellulose Drinking water [171] Supercritical water oxidation (SUWOX) Industrial wastes [172] Magnetically re-extractable nanoscale Pd-on-magnetite catalyst (Pd/Fe 3 O 4 ) Wastewaters [173] Multi-barrier treatment Municipal wastewaters [174] Photo-Fenton process UV/H 2 O 2 /Fe 2+ Pulp mill effluents [40] UV/persulfate oxidation process Saline wastewater [175] UV/TiO 2 /Ru x Se y oxidation system Paper industry wastes [123] Pd/AC catalyst Kraft pulp bleaching wastes [176] UV/TiO 2 /granular activated carbon 4-halogenophenols [177] UV/H 2 O 2 /TiO 2 system Pulp and paper wastes [178] UV/sodium hypochlorite Phenol's degradation [179] Physical Hot water extraction of hemicellulose Paper and pulp industry wastewaters [58,180] Distillation and membrane processes Pharmaceutical wastes [34] Distillation Chemical wastes [181] Centrifugation and drying Sludge [97] Nanofiltration Paper and pulp industry wastes [182] Biochemical Xylanase and laccase enzymes (obtained from Bacillus pumilus and Ganoderma sp., respectively)…”

Main inorganic ions and electric conductivity of polluted urban streams

“…The wavelengths were chosen in the previous investigations [21,22]. Detailed process of fluorimetric analysis is described in [18].…”