This research aimed to investigate the performance of seeds extract Moringa Oleifera (MO) as an eco-friendly coagulant and alternative practice in enhancing primary domestic wastewater effluent treatment by coagulation/flocculation, sedimentation. The were dried, crushed, sieved, content oil was extracted with n-hexane a solvent employing soxhlet apparatus (electro thermal) then used residue co...

The goal of this study was to investigate the performance coagulation-flocculation, and sedimentation tests reduce contaminant concentrations in domestic wastewater ecologically acceptable levels. were performed at (ONEE) laboratory using a jar test apparatus (GPB FLCDidatec, France) for enhancing primary treatment effluent from plant Ain Aouda City, Rabat, Morocco. Aluminum sulphate Al 2 (SO 4...

A review of results published in English or French between 1980 and 1990 was carried out to determine the levels of indigenous human enteric viruses in untreated surface and subsurface freshwaters, as well as in drinking water that had undergone the complete conventional treatment process. For this purpose, the conventional treatment process was defined as an operation that included coagulation...

Many impurities in waters and wastewaters are present as colloidal dispersions, i.e. they occur in particulate form within the approximate size range 1 to 10 -3 μm (refer Fig 1.3). Examples of this type of suspension include clays, substances of biological origin such as natural colour, proteins, carbohydrates and their natural or industrial derivatives. Invariably suspensions of this type poss...

The removal of the Microsporidia, Encephalitozoon intestinalis, feline calicivirus and coliphages MS-2, PRD-1, and Fr were evaluated during conventional drinking water treatment in a pilot plant. The treatment consisted of coagulation, sedimentation, and mixed media filtration. Fr coliphage was removed the most (3.21 log), followed by feline calicivirus (3.05 log), E. coli (2.67 log), E. intest...

ater suppliers need information about the removal efficiency of Cryptosporidium and potential surrogate parameters over a broad range of water quality and treatment conditions. These data can be obtained by tracking environmental concentrations of Cryptosporidium through full-scale treatment plants or feeding larger numbers of oocysts through pilot-scale facilities. Table 1 shows published Cryp...

Flocculation achieved by raising the pH, termed alkaline flocculation is a sustainable way of inducing in marine microalgae. Flocs formed post-alkaline have potential to be harvested via dissolved air flotation (DAF) or sedimentation. While DAF results faster separation and biomass with higher solids content compared sedimentation, it has not been tested saline environments, particularly when c...

Coagulant aids are useful chemicals that enhance the efficiency of coagulation sedimentation treatment. For this purpose, it is necessary to choose safe avoid various risks health those who use treated water. The chitosan, an abundant natural polysaccharide, as a coagulant aid significant not only for water treatment but also effective utilization unused resources, which mostly wasted. We exper...

This paper examines the incremental global climate response of black carbon (BC), the main component of soot, due to absorption and scattering by BC inclusions within cloud and precipitation particles. Modeled soot is emitted as an externally mixed aerosol particle. It evolves to an internal mixture through condensation, hydration, dissolution, dissociation, crystallization, aqueous chemistry, ...