Continous Treatment - Gütling Wassertechnologie GmbH

Continuous-Flow Treatment
Application
Before discharging into the canalisation, the
waste water must be treated according to the
standards that conform to the public sewer
acceptance limits.
Continuous flow systems are proved and at
the same time economical procedures. They
are designed for treating of large effluent
streams (>4-5 m³/hr) which carry low amounts
of contaminants.
In general, the continuous system is used in
following treatment processes:
• Neutralization
• Precipitation
• Flocculation
• Sludge separation
Process Characteristics
The effluent flows through a series of tanks
which are equipped with stirrers and dosing
valves for chemical treatment.
The precipitated sludge particles are
separated from the effluent by means of a
settling cyclone or compact clarifier, which
were developed and patented by Gütling. The
further dewatering of the thin sludge is carried
out in a filter press.
The respective process steps depend on the
wastewater contaminants and will be carried
out according to the local effluent standards.
Our continuous flow treatment corresponds to
the German ATV bulletin M765.

Continuous-Flow Treatment
Inlet
Storage tank
Description of the plant
The waste water is buffered in a storage tank in order to equalise the fluctuation of concentration and
volume flow. The waste water is transferred with a pumping station to the intake height of the
continuous treatment unit. The effluent flows at free slope without any shear stress. Depending on the
available installation height and the kind of the arising sludge, the sludge can be separated by means of
a settling cyclone or a compact clarifier. The separated wet sludge can be further compacted in a
sludge thickener.
A chamber filter press is usually used to dewater the sludge to a depositable dry sludge. In special
cases, a membrane filter press can also be used.
In certain critical applications, the use of a sandfilter in combination with a selective ion exchanger is
indicated.
Gütling Wassertechnologie
Merowingerstraße 7
D - 70736 Fellbach
Tel.: + 49 (0) 711/518550 – 0
Fax: + 49 (0) 711/518550 – 220
www.guetling.com
guetling@veoliawater.com
Chemicals
p H
M p H
Chemicals Flocculant
Advantages
pH
M pH M
Flotat
Clarified
effluent
Flow treatment Settling cyclone,
alternatively compact
clarifier
Thin sludge
• Processing of high waste water volumes with low
pollutant concentration
• Continuous process
• Little floor space requirements
• Standard dimensions
• Corrosion-resistant construction
• High standard of automation
• Low operating costs
• Sludge separation and pre-thickening in one system
12/2008