Download Dissolved-air flotation optimised for exhaust air treatment cycles

EnviroChemie GmbH
In den Leppsteinswiesen 9
64380 Rossdorf
Germany
Press information HANNOVER MESSE 2016
Dissolved-air flotation optimised for exhaust air
treatment cycles
The new EnviroChemie injectorsystem for DAF plants enables
cycles to be driven through flotation systems without chemical
conditioning or neutralisation.
EnviroChemie has received German utility model protection for a
specific dissolved-air flotation system from the Flomar series. This
particular version is particularly well suited to depleting the solids from
highly polluted exhaust air treatment wash cycles, for example from
washing towers or electrostatic precipitators. The task here is to reduce
the pollutants from the cycles without substantial usage of salt and to
thereby keep costs down. Complete clarification of the wastewater is
not necessary.
Traditional dissolved-air flotation systems produce the flotation motive
water through air saturation of a partial flow in the plant outflow.The
saturation usually takes place using multi-stage pumps, which only run
smoothly if they are fed with pH-neutral wastewater that is mostly free
from solids. The injector system developed by EnviroChemie achieves
micro-bubble formation comparable to saturation by pumps. The air
saturation of the partial flow is carried out by an injector pressure
container, which is fed by a wastewater pump resistant to solids and
which can handle both alkaline and acidic wastewater without any
problems. This enables cycles to be driven through flotation systems
without chemical conditioning or neutralisation. The flocculant dosage is
required only to produce separable flocs. If floating solids are present
without flocculation, a chemical-free procedure is possible.
-1-
22.04.2016 11:27