soda softening Dual media filters: rehabilitation of existing filters + addition of 14 more Post ozonation Activated Carbon filters (14 CARBAZUR GH filters) Sludge treatment with belt filter ...

the Zetameter, see specific analysis and figure 7); otherwise, an algaecount has to be undertaken on the various clarified water samples produced viajar-testing; clarification in a sludge blanket...

effectiveness criteria and aeration system comparison Aeration systems installed in an activated sludge tank have two purposes: providing aerobic micro-organisms with the oxygen they require...

normally. a) When the suspended solids level in the raw water is consistenly below approximately 1 to 2 g · L–1 (depending on particle size), one can opt for sludge contact and/or lamellar clarifiers after...

; these aggregates are finally collected as scum (floated sludge) from the surface of the units. Flotation is termed natural when the density differential between the aggregates and the water is naturally sufficient...

of 0.6 to 2.4 m. These units are difficult to cover over (necessary to avoid danger of odours emission) and extracting bottom sludge is not a simple matter. SUEZ has improved this product from...

In this case, we will consider filtration ‘through a support’ of a solids-laden liquid accompanied by the formation of a cake of increasing thickness. This is the case of sludge treatment (pressurised sludge...

into nitrogen gas; sludge (excess biomass) that can be processed after being mixed in with urban sludge; little effect on the water’s calcium-carbonate balance; temperature-sensitive process. It cannot...

to evaluate the viability of this process and to determine the requisite contact time. The results obtained will be similar to those for hot breaking but this method produces less sludge and, therefore...

are identical to those described for activated sludge aeration: Oxazur, Vibrair, Dipair, Flexazur, porous Domes… (see biological processes). Photo 4. In-line mixer Water can also be aerated...

by removable covers and the inclusion of automated sludge extraction robots; filtration modernisation (Azurfloor nozzle floors; replacement of sand, air + water backwash systems, controls, etc.); significant...

a simple foundation slab (preferably under cover, see photo 28) and a channel for discharging clarification sludge and filter backwash water into the drains. ...

concerns particles having a granulometry equal to or greater than 200 µm, or even 300 µm; lower granulometry values are usually come under the auspices of sludge removal or settling (see flocculators...

to a secondary tank where it is separated from the sludge that is produced. A fraction of the liquid collected beneath the filter or of the clarified effluent is recycled to the bacteria bed intake where...

: electromagnetic flowmeter with sleeve or, occasionally, an inserted probe; this system is becoming more widely used, even on liquid and paste-like sludge; transit time ultrasonic flowmeter; differential...

digested sludge with the main objective of producing a biomass which is easily biodegradeable and which generates energy. The use of algae for the production of matter with a high added value for the agri...

the pre-treatment and desalination processes. This area comprises 14 buildings including the lime buildings, RO chemicals, treated water storage, ponds, sludge and solids treatment buildings. 6-Transfer...

-fouling, or sludge generation when the generated deposits result from all of the previous problems. These problems, linked to water quality and cooling towers operating mode, degrade thermal exchange, water...

gravity filter and when the suspended solids to be held back have a hydroxide floc base, this floc’s dry matter content (i.e. the sludge compressed in the interstices of the matter) will not exceed 10 g · L...

for removing NH4 but is expensive to use. biological removal of ammonia (nitrification) utilisation conditions Please refer to section nitrogen cycle, suspended growth (activated sludge) process and nitrogen...