Sweep flocculation as a second form of charge neutralisation—a review

Ghernaout, Djamel; Ghernaout, Badia

doi:10.1080/19443994.2012.691699

Cited by 153 publications

(71 citation statements)

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“…Side of the disinfection manner implicates reducing DBP precursors; mostly total organic carbon (TOC), by coagulation, water softening, or filtration (Ji et al, 2008;Ghernaout and Ghernaout, 2012b). An elevated TOC level (more than 2.0 mg/L) points out an elevated capacity for DBP generation.…”

Section: Disinfection Mannersmentioning

confidence: 99%

Disinfection and DBPs removal in drinking water treatment: A perspective for a green technology

Ghernaout

2018

Int. j. adv. appl. sci.

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The generation, monitoring, and health impacts of disinfection by-products (DBPs) in potable water are problems of worldwide worry. Several nations, besides the World Health Organization, possess regulations and/or guidelines on bearable levels of DBPs in water. Since drinking water is frequently remediated using a chemical killing agent, DBPs are pollutants to which several humans are unprotected. On account of the health impacts linked to subjection to chlorinated water and/or some DBPs, the water manufacturing has performed great endeavors to equilibrate killing pathogens and DBP monitoring. Large survey has been realized on rising DBPs of health and regulatory worry. In spite of the fact that the attention on DBPs was previously on chlorine-and bromine-containing carbonaceous DBPs, appearing DBPs comprise iodine-containing species, also halogenated and non-halogenated nitrogenous DBPs. In addition, latest toxicity experimentation has proposed that certain of the more recent PBPs are of more elevated toxicity than some of the regulated chemical products. Therefore, survey has been realized to better comprehend how to costeffectively monitor a large interval of regulated and appearing DBPs. This comprises the usage of advanced remediation and killing pathogens methodologies. This paper shows certain of the newest research works at comprehending these significant DBP-related problems. Disinfection is killing microorganisms present in water; but, it is as well killing human beings drinking water by poisonous DBPs. Using chemicals for water treatment is finally a lost cause.

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Section: Disinfection Mannersmentioning

confidence: 99%

Disinfection and DBPs removal in drinking water treatment: A perspective for a green technology

Ghernaout

2018

Int. j. adv. appl. sci.

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“…In this process, the target particles have a size range between 0.001 and 1 μm leading to very small ratio of mass to surface area. Because of this small ratio in colloidal suspension, gravitational effects are insignificant while surface phenomena prevail [6]. The repulsive forces of electrical charges are more than attractive body forces due to the size of colloidal particles [3].…”

Section: Introductionmentioning

confidence: 99%

“…In the 1930s, activated silica was used as a "coagulant aid", and then artificial organic polymers and cationic polymers were recommended in the 1960s. Natural starches were used before the artificial compounds [6]. The color caused by natural organic matter was eliminated by aluminum sulfate and ferric iron for a long time.…”

Section: Introductionmentioning

confidence: 99%

“…After flocs settling and its elimination as sludge, supernatant wastewater is moved to next treatment processes or discharged into a watercourse [3]. Coagulation causes particles unstable by four mechanisms: compression of electrical double layer, adsorption and neutralization of electrical charge, entrapment of particles in precipitate and adsorption, and particles bridging [6].…”

Section: Introductionmentioning

confidence: 99%

“…The color caused by natural organic matter was eliminated by aluminum sulfate and ferric iron for a long time. All surface waters and many groundwaters have organic substances and its removal should be considered [6].…”

Section: Introductionmentioning

confidence: 99%

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Timecourse Study of Coagulation-Flocculation Process Using Aluminum Sulfate

Farasat¹,

Panahi²,

Mokhtarani³

2017

Water conserv. manag.

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In conformity with drinking water standards, water purification units must remove colloid impurities in water which shelters microorganisms such as bacteria and viruses, and natural organic matter (NOM) using the sequence of treatment processes including coagulation-flocculation, sedimentation or filtration and disinfection. The coagulationflocculation process consists of rapid mixing, followed by slow mixing and settling at room temperature. Efficiency of coagulation-flocculation process depends on process parameters. Optimization of significant parameters such as initial pH, coagulant and flocculant dosage, settling time, mixing parameters and the effective temperature for coagulation-flocculation performance is crucial. In this study, time course study of coagulation-flocculation as well as the effects of coagulant dosage and pH in the synthetic wastewater produced by kaolin was investigated. Coagulant dosage and pH optimization is necessary to achieve optimal efficiency. Appropriate coagulant dosage, pH and settling time were 70 mg/L, 6.5 and 45 minutes, respectively and resulted in 99.72% turbidity removal.Cite this article as: Zahra Farasat, Reza Panahi, Babak Mokhtarani (2017). Timecourse Study Of CoagulationFlocculation Process Using Aluminium Sulfate. Water Conservation and Management , 1(2):07-09.

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