be covered by special studies (mathematical models, mock-ups …). Below this limit, the flow is said to be fluvial with H > Hc and V < Vc. In water treatment works, flow will most frequently be of the fluvial...

F. This type of treatment must be accompanied by all appropriate protection precautions concerning the plant’s personnel and the possibility of an accidental overdose. Fluorine removal Some natural waters...

to check daily that treatment is within applicable limits and controlled from a financial viewpoint. SUEZ has standardised a solution that if offers for all its plants. The purpose of the Aquacalc software...

for it to be processed through a treatment plant. Surface water contamination can be seen as increased mineralisation and radioactivity that is primarily caused by: 230Th, 226 Ra (α emitters); 228Ra, 210Pb (β...

designed to separate heavy, mineral or organic particles bound together with the fats. For a more thorough fat separation as part of UWW pre-treatment, a mechanical aerator is used to diffuse fine air...

predominate. Treatment of mechanical emulsions may include destabilisation or partial coagulation using an organic coagulant direct followed by coalescent filtration or flotation. Chemical emulsion processing...

filter has a filtration velocity of between 7 and 20 m · h–1: The acronym GH refers to Great Height. In effect, owing to its properties and place in the treatment chain, in good conditions, this filter...

technique is normally used for this type of treatment. Although the rectangular shape can be used, the circular form will produce units that perform better, especially in the larger ranges, with simple...

Biological treatments used in water processing merely repeat natural phenomena. For heterotrophic bacteria, there are two ways of removing pollution from effluent: the aerobic digestion method...

) in which the steam plays a dual role: heating the liquid phase and carrying the dissolved gases to be extracted. In the water treatment field, this system’s main application is the removal of ammonia from...

it is unacceptable to the treatment plant. In such a case, pumping from the surface water source can be suspended and the stored water supply used, thereby preventing any interruption in production. The storage volume...

methanogenesis routes.One, from the H2/CO2 couple produces H2O the other, termed acetoclastic that breaks acetate down into CO2 and CH4. In sludge treatment for example, 70% of methane is produced via...

. Figure 1. CO2 eliminator Photo 2. Nangis (Seine-et-Marne, France) plant for Seif (Orkem group). Output: 140 m3· h–1. CO2 eliminator installed inside the ammonia condensate treatment unit...

is expressed in ms–1 KLa is expressed in s–1. In general, in water treatment applications, absorption is accompanied by a chemical reaction that is usually a more or less fast oxidation reaction (e...

definition Disinfection is the final stage in drinking water treatment before its distribution. Disinfection is used to remove pathogenic micro-organisms from the water. However, it should be noted...