or hydrochloric acid. chlorine used to oxidise sodium chlorite From a stoichiometric viewpoint, we need 1.34 g of sodium chlorite and 0.526 g of chlorine to produce 1 g of CℓO2. This process involves...

of the measurements used; measuring the rate at which the substrate disappears and comparing it with the amount of biomass used; e.g. gCOD · g^–1

Figure 5. Scheme Doha West (Qatar) plant Photo 9. Doha West (Qatar) plant - 1 Photo 10. Doha West (Qatar) plant - 2 Photo 11. Doha West (Qatar) plant - 3...

– Lavelanet (Ariège, France) – Output: 15,000 m3· d–1 ...

examples of measurement usage in a wastewater treatment plant Table 1. Examples of measurement usage in a wastewater treatment plant examples of measurement usage in a drinking water...

Dewatering lagoons are used in low rainfall countries where they do not want to inject chemical reagents for dewatering. These (shallow: approximately 1.8 m deep) lagoons work exclusively...

is barely covered with water to a level (1) that is maintained due to the depth of the filtered water outlet weir. At maximum fouling, the level rises to the supply water level (level 2). In general...

) 1,200 m3/h Gaurin-Ramecroix (Belgium) 1,700 m3/h ...

been designed to blend seamlessly into the environment. water treatment line Pretreatment 4 water lines Fine screening (6 mm separation) (4 units) 1 grease concentrator system 1...

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...

rough calculation where : h = the negative pressure created by the device, in metres of water at 4°C (density 1 000 kg · m–3), K = experimental coefficient (in...

, the formula providing Δh0 remains the same with: K then having special values calculated using specialist works.   Meaning of the symbols: Δh = total head loss, in Pa, Δh , Δh1… = elementary head...

In these appliances (figure 1), water is either sprayed or dispersed and evenly distributed over plastic or stainless steel packing that is either supplied as an orderly sequence or in bulk (made up...

The degremont® horizontal degasifying heater has been designed to run at pressures equal to or higher than 0.3 bar and to treat cold water flows ranging from 20 m3·h–1 to 600 m3·h–1...

precipitation, this reaction has to take place in the presence of a high concentration of seeds (> 20 g · L–1). The SO42– concentrations obtained will depend on salinity, the medium’s ionic activity...

; a filtering media that is 1.0 to 1.5 m deep; a filtering media having an effective size that is usually close to 1.1 mm (range: 0.55 to 1.7 mm) and an extremely low uniformity coefficient of approximately 1...

samples prepared with a 1 g· L-1 concentration for powder polyelectrolytes and a 2 mL· L-1 concentration for emulsion polyelectrolytes. a set of 1L beakers; a stopwatch. büchner drainability test...

consumption. Below 150 L·inhab–1·d–1 in many rural centres, the urban wastewater output in dry periods in France has now reached approximately 200 L·inhab–1·d–1, for towns numbering a few tens of thousands...

to 1 bar Figure 30. Henry constant for various gases Figure 31. Solubility in mg · L–1 of air gases in water at atmospheric pressure Figure 32. Solubility of CO2 and O2...

degrees, 1° chlorometric = 3.17 g · L^–1 active chlorine. 1 L of bleach at 18° Cℓ contains 57 g of active Cℓ₂.1 L of bleach at 48° C` contains 152 g of active Cℓ_2...