the filter’s nominal filtration threshold, usually by a few micrometers (5 to 20). demineralisation at very high filtration rates (8-120 m·h–1) direct through a cation-anion mixed bed (photo 3) The mixed bed...

, reduces the coagulant demand; prepares the water for subsequent biological treatment. However, there is a fairly strict optimum dosage (approximately 1 mg · L–1) and contact time (approximately 1...

to be installed such as mobile or fixed automatic samplers. The main components of automatic samplers used to collect wastewater or industrial water samples (figure 1): strainer to prevent clogging the intake...

(C, N, P), with repercussions on food chains and the quality of the water (see "Eutrophication", pollution and eutrophication). bacteria In the bacteria kingdom, figure 1, autotrophic organisms...

be worthwhile knowing the ultimate BOD, normally measured after 21 days, which includes the auto-oxidation phase (endogenous metabolism). dilution method (NF EN 1899-1) Appropriate solutions are prepared using...

on the machine intake, flexible seal on the centrate discharge, flexible seal on the cake delivery hopper and powerful shock absorbers under the frame. In stable operating conditions, 5 mm · s–1 vibrations...

integrated and advanced sites in the Asian petrochemical industry. Photo 25. Shanghai Chemical Industry Park – view 1 Photo 26. Shanghai Chemical Industry Park – view 2 (SCIP SFWD...

to avoid any ambiguity. Negative powers can be used in complicated cases but are not compulsory. unités de base Table 1. Basic units Note 1: temperature in degrees Celsius...

diagram of an odour control tower air circulation (figure 2) A fan (1) is used to send the foul air extracted from a confined building (or structure) into one or more towers in series. The air...

water consumption. Its next target was discharge control. Recycling has been very thorough in steel-making (instantaneous consumption of 200 m³.t–1 of steel for make-up volumes of 5 m³ or even 3 m³ per...

, when the mains system still has lead pipes or lead welds (brazing) (primarily: branch pipes and domestic systems). The standard applied is progressive : up to the 25th December 2013: 25 mg · L–1...

and on the metaboilic activity of aquatic organisms found in the water. Table 1 provides elements that are characteristic of surface water compared with groundwater. We should note the following: the presence...

of the Croissy-sur-Seine recharging plant (capacity: 136,800 m3· d–1) and polishing of aquifer water (Pecq plant – Capacity: 146,400 m3· d–1) maintaining recharge basins When the head loss through...

in lime carbonate removal-softening applications, it is also used when pressurised settlement and flocculation is required. The water’s rising velocity must not exceed 2.5 m · h–1 in clarification mode...

Desalination Project is a Public Private Partnership (PPP) which has delivered the biggest desalination plant in Australia and one of the biggest in the world. site visit 1-Administrative and utilities...

additional Biofor® N to raise the capacity to 50 000 PE Treating micropollutants and disinfection Ozonation (O3) = 1 ozone operator + 1 ozone contact column Complete treatment...

, Qp = storm water flow rate in m3 · h–1, h = number of rainstorm hours expressed in hours, n = number of rainfall events associated with the filling of a tank (storms). For Cb, we shall use: 50 · 10...

properties: adjustable pressure pneumatic cylinders are used to adjust belt tension (filtration pressure); belt drive speed can be modulated between 1 and 5 m · min–1; flocculation energy can...

(1) that opens out into a rotating distributor (10). This distributor spreads the sludge onto the periphery and propels the suspension into the annular space between the bowl (2) and screw (3...

process The Biomaster is an aerobic biological degradation process specific to this type of grease waste containing typical triglyceride COD concentrations of 50 to 300 g·L–1. The greases...