concentration) in an oven at a temperature of 105 °C until a steady mass is obtained. If M1 is the weight of the initial (wet) sample and M2 the weight following drying. dry solids content at 175‑185°C...

consumption : 0.72 – 1.19 kWh/m3 119.2 to 196.8 MWh/day Maximum energy produced: 25.6 MWh/day by two Pelton turbo-alternators (680 kW each) ...

: The clarified water is filtrated on 18 Aquazur® V sand filters (unit flow: 1,300 m3/h) Surface of each filter: 151.4 m² Standard speed filtration : 8.58 m3/m2/h physico-chemical disinfection...

(total nitrogen < 10 mg/l) and Pt2 quality level in phosphorus (concentration < 1mg/l). treatment for wet weather conditions Installation of 2 Densadeg® TGV lamellar settlers allows an accelerated...

optimization has been put in place to curb environmental impact and greenhouse gas emissions during construction and operation. 1. refurbishment of El Trebal plant water treatment Grit removal, screening...

Filtration: 10 Aquazur® V (1,564 m2) Densadeg® settling tank (wash water) Disinfection: final treatment by ultraviolet radiation sludge sludge thickening by GDD® direct...

) Figure 15. Thermal oil loop: 1 boiler/1 dryer treatment steam Steam generated during drying is condensed during cooling. Except in special cases where a drying platform is exterior to the wastewater...

used by small and medium capacity plants, the SBR technique now applies to major urban areas (over 1 million p.e.). We give below the advantages and drawbacks associated with this type of system...

reducing the dryer's energy consumption by a quarter compared to other drying technologies. This range of dryers has currently been developed to provide an evaporating capacity of up to 6 t·h–1...

Based on these reactions, the oxygen required for the complete oxidation of ammonia nitrogen will be 4.57 g O2 · g–1 oxidised N-NH4 (excluding the nitrogen used for synthesis). The following equation can...

by the unit of surface area and unit of time (m3·m–2.h–1); the solids loading that is characteristic of suspended solids that will settle per unit of surface area and per unit of time (kg · m–2.h–1...

will be required given the suspended solids concentration that has to be floated (2 to 6 g · L–1). Bubbles are then obtained by releasing the pressure in the pressurised water in a specific unit and figure...

treatment for the remaining particles (approximately 3 g · L–1). One possible treatment has been outlined in figure 52 which mainly applies to particle separation in the thickening tanks, reducing hardness...

in the environment for any rendering and composting activities. In other countries, like Northern European countries, these values can be more restrictive, with constraints of 1 ouE/m3 at percentile 99 for some...

precede pressurised mains of significant length. Photo 7. Colombes UWW plant (Hauts-de-Seine – France) – Output: 1,035,000 m3 . d–1 We also need to be aware of two sewerage systems that do...

intakes, siphon intakes, or even wells in the bank. Consequently, each case has to be investigated separately. Photo 2. Cebron-Puy Terrier plant (Deux-Sèvres). Output: 36 000 m3·d–1 – View...

as in several vitamins such as biotine and thiamine. Whilst it is essential for life, sulphur only represents between 1 and 2% of the mass (expressed in dry matter) of living beings. In the environment...

concentrations rise above a few tens of mg · L–1 (a concentration of 100 mg · L–1 must be regarded as high). Solutions involving tank covers with or without biogas recovery have been developed for the purpose...

is therefore obtained by the belt tension round the rollers: Pe will increase as the roller diameter decreases. However, Pe remains moderate (0.3 to 1 bar) due to the limited mechanical strength of the filter...

systems: continuous output through nozzles (Ø 1 to 2 mm in diameter ): the effluent must not contain too much suspended solids (sediment volume below 2-3%) and especially no coarse particles (fine...